Download Nuaire`s Residential Heat Recovery Catalogue.

Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 23
MECHANICAL VENTILATION & HEAT RECOVERY
23
FAN TYPE
FAN LOCATION
MAX
PERFORMANCE
MRXBOX95-WALL
WALL/CUPBOARD
52l/s
24
MRXBOX95-WH1
WALL/CUPBOARD
110l/s
30
MRXBOX95-LOFT
LOFT
64l/s
36
MRXBOX95-LH1
LOFT
113l/s
44
MRXBOX95-LH2
LOFT
132l/s
52
MRXBOX90-L
WALL/LOFT
125l/s
60
LPXBOXDC-2
CEILING VOID
75l/s
64
COOKERXBOX
KITCHEN
54l/s
68
nuaire.co.uk
PAGE
23
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 24
MV H R
MR XB OX95- WA L L
TEC H NI C A L I NF O R MATI O N
MRXBOX95-WALL MECHANICAL SUPPLY & EXTRACT WITH HEAT RECOVERY
UP TO 95% EFFICIENT, SAP APPENDIX Q RECOGNISED.
WALL/CUPBOAD MOUNTING DESIGN FOR SMALL TO MEDIUM
HOUSES & APARTMENTS.
24
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 25
MV H R
MR XB OX95- WA L L
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MRXBOX95-WALL is designed to provide optimised balanced (supply and extract) mechanical ventilation with heat recovery. Tempered air is delivered into
‘living’ areas whilst extracting moisture laden air from ‘wet’ areas, creating comfortable well ventilated homes. MRXBOX95-WALL uses the latest generation of
low voltage DC fans and motors, counter flow heat exchanger and easy accessible controls. The heat exchanger block can recover up to 95% of the normally
wasted heat The two independent fans has full speed control for background and boost ventilation rates as well as a run-on timer facility.
MEETS BUILDING REGULATIONS
FLEXIBLE SOLUTION
OPTIONAL SENSORS AND DETECTORS
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
MRXBOX95-WALL ensures a flexible solution with
multi 125mm dia. spigots.
Customise MRXBOX95-WALL for enhanced
performance. All supplied with pre-plugged 10m
data cable and incorporates status LED.
EXTREMELY LOW NOISE LEVELS
HIGH EFFICIENCY
Quiet running unit ensuring occupant acceptability.
Heat exchanger is up to 95% efficient.
EASY INSTALLATION
Compact, lightweight and simple to install.
Full installation service available.
FREE OF CHARGE CODE ADVISORY
SERVICE
Takes the stress out of specifying.
WIDE CHOICE
LOW MAINTENANCE REQUIREMENT
Filter replacement typically every 12 - 18 months.
Range of ducting and grilles available, please
contact Nuaire.
NO NEED FOR TRICKLE VENTS
OPTIONAL SUMMER BYPASS AVAILABLE
A cost saving and tenant acceptability.
Provides cooling during warmer months.
MRXBOX95B-WALL.
IMPROVES INDOOR AIR QUALITY
Prevents condensation by keeping moisture levels
low - creating a healthier environment.
5 YEAR WARRANTY
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
INSTALLATION
A 2 piece metal bracket is provided with the unit for
wall mounting. One part of the bracket is mounted on
the wall and the second part of the bracket is attached
to the back of the unit.
MRXBOX95-PIR (passive infra red)
A low voltage sensor, detects
movement and activates system.
Incorporates overrun timer and
timer adjustments.
MRXBOX95-HUM
A low voltage sensor, activates the
system when the RH level is above
set point. Incorporates overrun
timer and RH setpoint level
adjustment.
MRXBOX95-RFI
If fan failure occurs the audio visual
indicator will flash a warning.
REMOVABLE G2 FILTERS
The unit and bracket are then installed onto the
bracket on the wall.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
25
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 26
MV H R
MR XB OX95- WA L L
TEC H NI C A L I NF O R MATI O N
PERFORMANCE MRXBOX95-WALL
Casing
MRXBOX95
300
ISO 5801 2007
AMCA 300
V
Fan Static Pressure (Pa)
250
Type D
Air Density 1.2 kg/m3
200
150
Code descriptions
1
100
MR-XBOX-95-WALL
|
|
|
|
2
1
3
50
4
5
0
0
10.0
20.0
30.0
40.0
50.0
60.0
1.
2.
3.
4.
2
3
4
Multi-room supply and extract heat recovery
Product range
Efficiency
Wall/cupboard application
Air volume flow rate (l/s)
SAP APPENDIX Q TEST RESULTS
Application
Specific fan
power (W/l/s)
Heat exchange
effIciency %
Energy Saving Trust Best
Practice Performance Compliant
Kitchen Plus 1 wet room
0.59
92
Yes
Kitchen Plus 2 wet rooms
0.68
91
Yes
Kitchen Plus 3 wet rooms
0.83
90
Yes
MRXBOX95-WALL
E L E C T R I C A L & S OU N D
Curve
Maximum
power consumption
(Watts)
1
71
2
39
3
21
4
10
5
5
Open inlet
Open outlet
Breakout
Open Inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Sound Power Levels dB re 1pW
63
125
250
500
1K
2K
4K
8K
dBA
@3m
45
48
51
44
44
50
42
42
48
40
40
46
35
36
42
47
59
51
44
53
48
37
49
44
32
43
38
20
33
28
41
54
43
36
48
38
31
42
32
23
33
23
5
18
8
39
47
38
34
41
33
26
35
27
18
20
18
11
3
24
39
30
20
29
25
20
23
19
12
14
10
-
24
33
26
19
25
21
17
19
15
9
13
6
-
30
41
33
26
36
30
21
31
26
16
24
21
<10
15
13
41
51
50
39
48
48
38
46
46
35
43
43
29
38
38
48
57
53
46
52
51
43
49
47
39
44
43
30
37
36
The maximum power consumption shown above (Watts) is consumed on units running continuously, not taking into
account any heat recovery saving and based on SAP Appendix Q testing.
26
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 27
MV H R
MR XB OX95- WA L L
TEC H NI C A L I NF O R MATI O N
UNIT COMPONENTS
Mounting bracket on
wall and rear of unit.
4
3
1
2
Unit heat
exchanger pod.
Spigot Location &
Ducting references
Spigot 1.
Spigot 2.
Spigot 3.
Spigot 4.
Two Removable
G2 filters.
Removable access cover.
Condensate
tray.
125mm dia. = extract air from dwelling.
125mm dia. = exhaust air to outside.
125mm dia. = intake air from outside.
125mm dia. = supply air to house.
DIMENSIONS (MM)
Weight 13 Kg
VIEW FROM FRONT WITH COVER REMOVED
SIDE VIEW
435
Mounting bracket
21.5mm dia. condensate drain
598
VIEW FROM TOP
285
Mounting bracket
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
27
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 28
MV H R
MR XB OX95- WA L L
TEC H NI C A L I NF O R MATI O N
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
75W (max) 0.6 Amp
Fuse rating:
3 Amp
NOTE: This unit must be earthed.
Detail of unit control on front panel.
Power supply PCB. 230V in,
24V dc out.
SL
N
L
UNIT SERVING KITCHEN AND BATHROOM
230V IN
50Hz
Mains
Fan
Unit
MAINS
230V
50Hz
N
N
L
L
Room
light
Fuse 2A
SL
3 Pole
isolator
Light
switch
(Double
Pole)
Kitchen switch
Earth point
UNIT SERVING KITCHEN AND TWO BATHROOMS
Fan
Unit
Internal wiring
MAINS
230V
50Hz
N
N
L
L
Room
lights
Fuse 2A
Kitchen switch
Connections for
optional controls
Volt free relay
contacts
Fault
Run
Switch to deactivate
continuous trickle
Fan connections
28
3 Pole
isolator
Light
switches
(Double
Pole)
Control PCB. 24V
029 2085 8200
SL
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:45 Page 29
MV H R
MR XB OX95- WA L L
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI FIC ATION
OPERATION
OPTIONAL SUMMER BYPASS - MRXBOX95B-WALL
The supply and extract system shall be wall/cupboard mounted in accordance
with the specification.
The bypass damper opens when a 230V signal is applied to the unit (via a
manual switch, supplied). This opens the damper via an actuator. When the
switch signal is de-activated the unit returns to its original state (air through the
heat exchanger). Outside air supplied through the bypass is still filtered, so the
air quality is optimal, irrespective of the bypass setting (Open or closed).
The combined supply and extract with heat recovery unit, shall supply filtered
fresh air to each of the habitable rooms and vitiated air shall be extracted from
all wet areas e.g. bathroom, en-suite, w.c, kitchen, utility rooms, etc. The supply
air shall be pre-heated by the warm extract air via the integrated counter-flow
heat exchanger element.
The ventilation unit shall vary its speed and therefore the ventilation rate, as it
receives signals from one of the following:
• Switched live signal from light / remote switches
• Optional externally interconnected sensors
When signals are received, the fan shall alter its speed to adjustable, normal and
boost rates.
MRXBOX95-WALL - CONTROL OPTIONS
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer: • Integral speed control on supply and extract.
• Integral background ventilation control/set point.
• Integral boost ventilation control/set point.
• Integral run on timer.
• Fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
An adjustable run-on facility is integrated into the unit which allows the fans to
run-on for between 1 and 60 minutes after the signals have been switched off.
OPTIONAL CONTROLS
The unit shall have the facility to commission the supply and extract fans via
inbuilt minimum and maximum speed adjustment; the fans shall have infinitely
variable speed control.
MRXBOX95-PIR Passive infra-red detector
MRXBOX95-HUM Humidistat
MRXBOX95-RFI Remote fail indictor
Units shall be the MRXBOX95-WALL as manufactured by Nuaire.
MRXBOX95-WALL - UNIT SPECIFICATION
The unit shall be fully insulated providing excellent thermal and acoustic
characteristics and shall be complete with a multi plate counter flow high
efficiency heat exchanger block, with a thermal efficiency of up to 95%. The heat
exchanger shall be protected by G2 grade filters on fresh air inlet and system
extract. The heat exchanger and filters shall be accessible via the front access
panel, enabling quick and easy maintenance.
The unit shall have low energy, high efficiency d.c. fan/motor assemblies with
sealed for life bearings, the impellers shall be backward curved centrifugal type.
The motors shall be suitable of an ambient temperature of 40ºC.
The unit shall be supplied complete with an insulated condensate drip tray and
21.5mm drain connection.
The unit shall be suitable for 125mm circular ducting. D204 x 60mm.
The breakout noise level and power requirements shall be as detailed by the unit
manufacturer and in accordance with the ventilation equipment schedule.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
29
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 30
MV H R
MR XB OX95- W H 1
TEC H NI C A L I NF O R MATI O N
M RX B OX 9 5 - WH1 M E CHA NIC AL VENTILATION WITH HEAT RECOVERY
UP TO 95% EFFICIENT, SAP APPENDIX Q RECOGNISED.
WALL/CUPBOAD MOUNTING DESIGN FOR MEDIUM TO LARGE
HOUSES & APARTMENTS.
30
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 31
MV H R
MR XB OX95- W H 1
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MRXBOX95-WH1 is designed to provide optimised balanced (supply & extract) mechanical ventilation with heat recovery. Tempered air is delivered into ‘living’
areas whilst extracting moisture laden air from ‘wet’ areas creating comfortable well ventilated homes. The unit has the facility to commission the supply &
extract fans independently on both minimum and maximum speeds. The heat exchanger block can recover up to 95% of normally wasted heat.
MEETS BUILDING REGULATIONS
ADDED SECURITY
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
Windows may be kept closed.
PRE-COMMISSIONING FILTER
PROTECTION
IMPROVES INDOOR AIR QUALITY
OPTIMUM PERFORMANCE
High efficiency filters helps to create a healthy
living environment.
Low Specific Fan power and high efficiency results
in SAP Q.
LOW & EASY MAINTENANCE
SUITABLE FOR LARGER APPLICATIONS
Designed to meet the duty for medium to large
properties including 3 storey.
Filters are covered in a removable protective film to
prevent clogged up filters prior to occupant
handover.
SIMPLE FAN CONTROLS
Easy accessible filters from front cover – no tools
required. Filter replacement typically every 12 - 18
months.
Independent controls for supply & extract for quick
and easy commissioning.
NO REQUIREMENT FOR TRICKLEVENTS
Reduces noise from outside - overcome draught
issues.
DESCREET RUN MONITOR
COMPACT
Records units operational time.
The unit fits easily into cupboards not taking up
valuable storage space.
INTEGRAL FROST PROTECTION
5 YEAR WARRANTY
Protects the unit during extreme cold spells.
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
EXTREMELY LOW NOISE LEVELS
Quiet running unit ensuring occupant acceptability.
OPTIONAL SUMMER BYPASS AVAILABLE
Provides cooling during warmer months.
MRXBOX95B-WH1.
INSTALLATION FEATURES
Filter being removed
Filter cover
Typical cupboard installation of MRXBOX95-WH1.
Download specification from www.nuaire.co.uk/specifications
Removeable filters without removing front cover.
nuaire.co.uk
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Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 32
MV H R
MR XB OX95- W H 1
TEC H NI C A L I NF O R MATI O N
PERFORMANCE
Casing
MRXBOX95-WH1
500
ISO 5801 2007
AMCA 300
V
Type D
Air Density 1.2 kg/m3
400
Fan Static Pressure (Pa)
1
300
Code description
2
MR-XBOX-95-WH1
|
|
|
|
3
200
1
2
3
4
4
100
5
6
0
0
25
50
75
100
125
1. Multi-room supply and extract
heat recovery
2. Product range
3. Efficiency
4. Wall/cupboard application
5. H1 = High 1 Model
Air volume flow rate (l/s)
MRXBOX95-WH1
E L E C T R I C A L & S OU N D
Curve
1
Maximum
power consumption
(Watts)
150
2
114
3
75
4
36
5
14
6
8
Sound Power Levels dB re 1pW
63
125
250
48
51
58
56
63
67
56
61
59
48
50
57
56
62
66
56
60
58
47
50
56
55
62
65
55
60
57
46
48
53
54
60
62
54
58
54
44
45
50
52
57
59
52
55
51
41
42
44
49
54
53
49
52
45
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open Inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
500
49
67
53
48
66
52
46
64
50
43
61
47
38
56
42
30
48
34
1K
47
62
43
45
60
41
43
58
39
37
52
33
30
45
26
19
34
<16
2K
39
60
40
37
58
38
35
56
36
29
50
30
22
43
23
<16
32
<16
4K
25
50
25
23
48
23
21
46
21
<16
40
<16
<16
33
<16
<16
22
<16
8K
<16
41
<16
<16
39
<16
<16
37
<16
31
<16
<16
24
<16
<16
<16
<16
dBA
@3m
31
47
33
30
45
32
29
44
31
25
40
28
22
35
24
<16
27
19
The maximum power consumption shown above (Watts) is consumed on units running continuously, not taking into account any heat recovery saving based on SAP Appendix Q testing.
SAP APPENDIX Q TEST RESULTS
Application
Specific fan
power
(W/l/s)
Heat
exchange
efficiency %
Energy Saving Trust
Best Practice
Compliant
Application
Specific fan
power
(W/l/s)
Heat
exchange
efficiency %
Energy Saving Trust
Best Practice
Compliant
Kitchen Plus 1 wet room
0.41
91
Yes
Kitchen + 5 wet rooms
0.62
89
Yes
Kitchen Plus 2 wet rooms 0.40
91
Yes
Kitchen + 6 wet rooms
0.72
88
Yes
Kitchen Plus 3 wet rooms 0.46
90
Yes
Kitchen + 7 wet rooms
0.83
87
Yes
0.53
90
Yes
Kitchen + 4 wet rooms
32
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 33
MV H R
MR XB OX95- W H 1
TEC H NI C A L I NF O R MATI O N
GENERAL ARRANGEMENT
MRXBOX95-WH1
Mounting bracket
on wall and rear of unit.
4
1
3
2
Two removable G3 filters.
Condensate tray.
Spigot Location and Ducting references
Spigot 1. 150mm dia. = extract air from dwelling.
Spigot 2. 150mm dia. = exhaust air to outside.
Spigot 3. 150mm dia. = intake air from outside.
Spigot 4. 150mm dia. = supply air to house.
MRXBOX95-WH1 - DIMENSIONS (mm)
View from top
Side view
16
458
Spigots
4 x 150mm dia.
619
226
120
Mounting
bracket
226
View from front with cover removed
654
Download specification from www.nuaire.co.uk/specifications
431
nuaire.co.uk
33
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 34
MV H R
MR XB OX95- W H 1
TEC H NI C A L I NF O R MATI O N
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
The unit is supplied with a flexible cord for connection to the mains supply.
Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
WH1 - 1.3 Amp
Fuse rating:
3 Amp
NOTE: This unit must be earthed.
Detail of unit control on front panel.
Tamper proof label following commissioning.
B
L
U
The mains power supply cable should be connected to a fixed wiring
installation, via a fused isolator, in accordance with current IEE wiring
regulations.
B
R
N
B
R
N
EXTRACT FAN
RED
YEL
WHI
BLU
SUPPLY
SWL
RED
YEL
WHI
BLU
EXTRACT
SUPPLY
SUPPLY FAN
B
L
U
BYPASS
FAIL
Note: Wiring is for reference
purposes only as the connections
above are factory fitted.
The unit is pre-wired with a
2 metre fly lead.
UNIT SERVING KITCHEN AND BATHROOM
Supply cord
from unit
MAINS
230V N
50Hz L
Fuse 2A
Light
switch
(Double
Pole)
Room
light
Blue
Brown
Black
3 Pole
isolator
Kitchen switch
UNIT SERVING KITCHEN AND TWO BATHROOMS
Green/yellow
Blue
Brown
Black
MAINS
230V N
50Hz L
Fuse 2A
Room
lights
Light
switches
(Double
Pole)
Kitchen switch
34
029 2085 8200
3 Pole
isolator
Supply cord
from unit
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 35
MV H R
MR XB OX95- W H 1
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI FIC ATION
OPERATION
The supply and extract ventilation unit shall be positioned as indicated
on the drawings and shall be in accordance with the particular fan
schedule in the specification.
The unit shall be supplied complete with a condensate drip tray
and 21.5mm drain connection.
The unit shall be suitable for 150mm diameter circular ducting.
The combined supply and extract with heat recovery unit, shall supply
filtered fresh air to each of the habitable rooms and vitiated air shall be
extracted from the wet areas e.g. bathroom, en-suite, w.c, kitchen,
utility rooms, etc. The supply air shall be pre-heated by the warm
extract air via the integrated counter-flow heat exchanger element.
The extracted air shall also be filtered before it reaches the heat
exchanger block.
The breakout noise level and power requirements shall be as
detailed by the unit manufacturer and in accordance with the
ventilation equipment schedule.
Units shall be MRXBOX95-WH1 as manufactured by Nuaire.
OPTIONAL SUMMER BYPASS - MRXBOX95B-WH1
The ventilation unit shall vary its speed and therefore the ventilation
rate, as it receives signals from one of the following:
• Switched live signal from light / remote switches.
When signals are received, the fan shall alter its speed to adjustable,
normal and boost rates.
The bypass opens automatically when outside temperature exceeds 20ºC.
This opens the damper via an actuator. Outside air supplied through the bypass
is still filtered, so the air quality is optimal, irrespective of the bypass setting
(open or closed).
CONTROL OPTIONS
The unit shall have the facility to commission the supply and extract
fans independently on minimum speed (continuous background
ventilation), and boost speed, via inbuilt minimum and maximum
speed adjustment. The fans shall have infinitely variable speed
control.
SPECIFICATION
The unit shall be fully insulated providing excellent thermal and
acoustic characteristics and shall be complete with a multi plate
counter flow high efficiency heat exchanger block, with a thermal
efficiency of up to 95%. The heat exchanger shall be protected by
G3 grade filters on fresh air inlet and system extract.
The heat exchanger and filters shall be accessible via the front access
panel, enabling quick and easy maintenance.
The unit shall have low energy, high efficiency EC fan/motor
assemblies with sealed for life bearings, the impellers shall be
backward curved centrifugal type. The motors shall be suitable of
an ambient temperature of 40°C.
Download specification from www.nuaire.co.uk/specifications
All versions shall have the following functions integrally mounted
within the fan unit on a purpose made PCB, all such components
pre-wired and factory fitted by the manufacturer:
• Independent control of background supply and extract flow rates.
• Independent control of boost speed supply and extract flow rates.
• Integral fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
• Integral heat exchanger frost protection.
• Discreet daily run monitor.
OPTIONAL CONTROLS
MRXBOX95WH-RFI Remote fail indicator.
The unit shall be offered with a 5 year warranty.
The manufacturer’s recommendations should be observed at all times.
The unit shall be the MRXBOX95-WH1 and shall be manufactured by Nuaire.
nuaire.co.uk
35
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 36
MV H R
MR XB OX95- L O F T
TEC H NI C A L I NF O R MATI O N
MRXBOX95-LOFT MECHANICAL SUPPLY & EXTRACT WITH HEAT RECOVERY
UP TO 95% EFFICIENT, SAP APPENDIX Q RECOGNISED.
LOFT MOUNTING DESIGN FOR SMALL TO MEDIUM HOUSES
36
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 37
MV H R
MR XB OX95- L O F T
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MRXBOX95-LOFT is designed to provide optimised balanced (supply and extract) mechanical ventilation with heat recovery. Tempered air is delivered into ‘living’ areas
whilst extracting moisture laden air from ‘wet’ areas, creating comfortable well ventilated homes. MRXBOX95-LOFT uses the latest generation of low voltage DC fans
and motors, counter flow heat exchanger and easy accessible controls. The heat exchanger block can recover up to 95% of the normally wasted heat. The two
independent fans has full speed control for background and boost ventilation rates as well as a run-on timer facility.
MEETS BUILDING REGULATIONS
EXTREMELY LOW NOISE LEVELS
OPTIONAL SENSORS AND DETECTORS
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
Quiet running unit ensuring occupant acceptability.
Customise MRXBOX95-LOFT for enhanced
performance. All supplied with pre-plugged 10m
data cable and incorporates status LED.
HIGH EFFICIENCY
Takes the stress out of specifying.
FREE OF CHARGE CODE ADVISORY
SERVICE
Heat exchanger is up to 95% efficient.
FLEXIBLE SOLUTION
EASY INSTALLATION
MRXBOX95-LOFT ensures a flexible solution with
four 125mm dia. and four optional 150mm dia.
spigots.
Compact, lightweight and simple to install.
OPTIONAL SUMMER BYPASS AVAILABLE
WIDE CHOICE
Provides cooling during warmer months.
MRXBOX95B-LOFT.
Range of ducting and grilles available, please
contact Nuaire.
NO NEED FOR TRICKLE VENTS
A cost saving and tenant acceptability.
5 YEAR WARRANTY
IMPROVES INDOOR AIR QUALITY
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
Prevents condensation by keeping moisture levels
low - creating a healthier environment.
MRXBOX95-PIR (passive infra red)
A low voltage sensor, detects
movement and activates system.
Incorporates overrun timer and
timer adjustments.
MRXBOX95-HUM
A low voltage sensor, activates the
system when the RH level is above
set point. Incorporates overrun
timer and RH setpoint level
adjustment.
MRXBOX95-RFI
If fan failure occurs the audio visual
indicator will flash a warning.
LOW MAINTENANCE REQUIREMENT
Filter replacement typically every 5 years.
FLEXIBLE LOFT MOUNTING OPTIONS
REMOVABLE G4 FILTERS
Metal bracket
attached to unit
Washer Woodscrew
A. V. mount
Ceiling joist
Option 1. Mounted on roof joists
using four “L” shape metal brackets
and AV mounts on long sides of
unit.
Side view example of an ‘L’
shaped fixing bracket and AV
mount attached to ceiling joist.
Option 2. Mounted on roof joists
using four “L” shape metal brackets
and AV mounts on short sides of
unit.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
37
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 38
MV H R
MR XB OX95- L O F T
TEC H NI C A L I NF O R MATI O N
PERFORMANCE - MRXBOX95-LOFT
Casing
MRXBOX95-LOFT
300
ISO 5801 2007
AMCA 300
V
250
Type D
Air Density 1.2 kg/m3
Fan Static Pressure (Pa)
200
150
Code descriptions
1
MR-XBOX95-LOFT
|
|
|
|
2
100
3
1
4
50
5
6
0
0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
Air volume flow rate (l/s)
2
3
4
1. Multi-room supply and extract heat
recovery
2. Product range
3. Efficiency
4. Loft application
SAP APPENDIX Q TEST RESULTS
Application
Specific fan
power (W/l/s)
Heat exchange
effIciency %
Energy Saving Trust Best
Practice Performance Compliant
Kitchen Plus 1 wet room
0.69
92
Yes
Kitchen Plus 2 wet rooms
0.76
92
Yes
Kitchen Plus 3 wet rooms
0.85
90
Yes
MRXBOX95-LOFT
E L E C T R I C A L & S OU N D
Curve
Maximum
power consumption
(Watts)
1
73
2
51
3
31
4
20
5
12
6
7
Hemisphical Free field dBA
38
029 2085 8200
Open inlet
Open outlet
Breakout
Open Inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Sound Power Levels dB re 1pW
63
125
250
500
1K
2K
4K
8K
dBA
@3m
38
40
43
37
39
42
34
38
38
33
37
37
30
34
34
28
32
32
43
59
51
41
57
49
35
52
44
32
49
41
23
40
42
20
37
29
42
54
43
38
50
39
37
48
37
32
43
32
19
30
19
14
25
14
32
51
42
28
47
38
28
43
34
23
38
29
10
25
16
5
20
11
29
45
36
25
41
32
22
35
26
17
30
21
4
17
8
12
3
29
34
31
25
30
27
19
30
27
14
25
22
12
9
7
4
28
42
34
25
39
32
23
35
27
20
32
24
13
22
22
<10
19
<10
42
56
55
41
55
54
40
49
48
38
48
46
34
44
42
32
41
40
48
56
53
46
54
51
43
51
48
44
49
46
38
43
40
32
40
37
The maximum power consumption shown above (Watts) is consumed on units running continuously,
not taking into account any heat recovery saving and based on SAP Appendix Q testing.
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 39
MV H R
MR XB OX95- L O F T
TEC H NI C A L I NF O R MATI O N
UNIT COMPONENTS
Filters, PCB and
Heat Exchanger Access
G4 removable filter.
Heat exchanger.
4 optional 150mm dia. knockout spigot
locations on rear of unit.
If required for use cut through the acoustic
foam round the circumference
of the knockout. (see figure above).
G4 removable filter.
Adjustment potentiometers and
indication lights.
Motor access.
4 x 125mm dia. spigots.
Panel not removable. Illustration purposes only.
DIMENSIONS (MM)
View from front 4 X 125mm spigots
Side view (controls)
4 alternative
150mm dia.
knockout spigots
on back of unit
430
Weight 21 Kg
Condensate
Drain
450
840
View from top
21.5mm dia.
condensate
drain alternative
position
Side view (non controls)
21.5mm dia.
condensate
drain alternative
position
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
39
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 40
MV H R
MR XB OX95B - L O F T
TEC H NI C A L I NF O R MATI O N
GENERAL ARRANGEMENT
OPTIONAL SUMMER BYPASS - MRXBOX95B-LOFT
Filters, PCB and
Heat Exchanger Access
G4 removable filter.
Heat exchanger.
Three optional 150mm dia. knockout spigot
locations on rear of unit and one on the
side (non controls).
If required for use cut through the acoustic
foam round the circumference of the
knockout.
(see figure above)
G4 removable filter.
Adjustment potentiometers and
indication lights.
Motor access.
4 x 125mm dia. spigots.
Panel not removable. Illustration purposes only.
DIMENSIONS (MM)
Side view (controls)
View from front 3 X 125mm spigots
3 alternative
150mm dia.
knockout spigots
on back of unit
430
Weight 21 Kg
Condensate
Drain
450
840
View from top
Side view (non controls)
Alternative
150mm dia.
knockout
spigot
21.5mm dia.
condensate
drain alternative
position
40
029 2085 8200
21.5mm dia.
condensate
drain alternative
position
125mm dia.
spigot
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 41
MV H R
MR XB OX95- L O F T
TEC H NI C A L I NF O R MATI O N
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
75W (max) 0.6 Amp
Fuse rating:
3 Amp
NOTE: This unit must be earthed.
Detail of unit control on side panel.
The three core cable from the mains power supply should be connected
to a fixed wiring installation, via a fused isolator, in accordance with
current IEE wiring regulations.
Control PCB. 24V
Internal wiring
Power supply PCB. 230V
in, 24V dc out.
Connections for
optional controls
Volt free relay
contacts
Fault
Run
Fan connections
230V IN
50Hz
Mains
SWL N
Earth
point
L
Connection to
supply cord
UNIT SERVING KITCHEN AND BATHROOM
MAINS
230V N
50Hz L
Room
Fuse 2A
light
Light
switch
(Double
Pole) Kitchen switch
Green/yellow
Blue
Brown
Black
3 Pole
isolator
Summer
bypass
switch
Supply cord
from unit
Grey (only used
on bypass unit)
UNIT SERVING KITCHEN AND TWO BATHROOMS
MAINS
230V N
50Hz L
Fuse 2A
Light
switches
(Double
Pole)
Room
lights
Kitchen switch
Download specification from www.nuaire.co.uk/specifications
Green/yellow
Blue
Brown
Black
3 Pole
isolator
Summer
bypass
switch
Supply cord
from unit
Grey (only used
on bypass unit)
nuaire.co.uk
41
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 42
MV H R
MR XB OX95- L O F T
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI F I C ATION
OPERATION
OPTIONAL SUMMER BYPASS - MRXBOX95B-LOFT
The supply and extract system shall be positioned in the loft space in accordance
with the specification.
The summer bypass facility during the warmer months can reduce the
The combined supply and extract with heat recovery unit, shall supply filtered
fresh air to each of the habitable rooms and vitiated air shall be extracted from
all wet areas e.g. bathroom, en-suite, w.c, kitchen, utility rooms, etc. The supply
air shall be pre-heated by the warm extract air via the integrated counter-flow
heat exchanger element.
The ventilation unit shall vary its speed and therefore the ventilation rate, as it
receives signals from one of the following:
• Switched live signal from light / remote switches
• Optional externally interconnected sensors
When signals are received, the fan shall alter its speed to adjustable, normal and
boost rates.
temperature in a room by a few degrees, whilst still ventilating that room
effectively. The bypass damper opens when a 230V switch signal is applied to
the unit. (via a manual switch) This opens the damper via a wax actuator. When
the switch signal is de-activated the unit returns to its original state (air through
the heat exchanger).
MRXBOX95-LOFT - CONTROL OPTIONS
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer: • Integral speed control on supply and extract.
• Integral background ventilation control/set point.
• Integral boost ventilation control/set point.
• Integral run on timer.
• Fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
An adjustable run-on facility is integrated into the unit which allows the fans to
run-on for between 1 and 60 minutes after the signals have been switched off.
OPTIONAL CONTROLS
The unit shall have the facility to commission the supply and extract fans via
inbuilt minimum and maximum speed adjustment; the fans shall have infinitely
variable speed control.
MRXBOX95-LOFT - UNIT SPECIFICATION
The unit shall be fully insulated providing excellent thermal and acoustic
characteristics and shall be complete with a multi plate counter flow high
efficiency heat exchanger block, with a thermal efficiency of up to 95%. The heat
exchanger shall be protected by G4 grade filters on fresh air inlet and system
extract. The heat exchanger and filters shall be accessible via the top access
panel, enabling quick and easy maintenance.
The unit shall have low energy, high efficiency DC fan/motor assemblies with
sealed for life bearings, the impellers shall be backward curved centrifugal type.
The motors shall be suitable of an ambient temperature of 40ºC.
The unit shall be supplied complete with an insulated condensate drip tray and
21.5mm drain connection.
The unit shall be suitable for 150mm or 125mm circular ducting.
Anti-vibration mounts are supplied with each unit to prevent vibration being
tramsmitted to the ceiling timbers.
The breakout noise level and power requirements shall be as detailed by the unit
manufacturer and in accordance with the ventilation equipment schedule.
42
029 2085 8200
MRXBOX95-PIR Passive infra-red detector
MRXBOX95-HUM Humidistat
MRXBOX95-RFI Remote fail indictor
Units shall be the MRXBOX95-LOFT as manufactured by Nuaire.
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 43
Breathe easy with a
CPS qualification from Nuaire
From 1st October 2010
domestic ventilation became
‘notifiable work’ as part of Approved
Document Part F 2010 (ADF) so it is vital that
installers are properly trained and qualified.
As part of our commitment to installers, engineers and
customers, Nuaire now offers accredited ventilation installer
training at our BPEC accredited training facility.
If you are an installer
• learn new skills and increase your qualifications
• increase the scope of work you can offer to your customers
• be able to confidently install, inspect and commission domestic ventilation
• minimise costs for you and your customers
If you are an RSL, housebuilder or developer
and subcontract installation work, recommend this course to your installers to:
• ensure that all your installations are completed by qualified staff
• promote sustainability, using local labour and enhance local skills with your preferred suppliers
Why not benefit from
Competent Persons
Scheme (CPS) training
at Nuaire’s BPEC
approved facility?
Contact your local sales representative to find out more and arrange this
training. Alternatively contact our training facility on
02920 858463, e-mail [email protected] or visit www.nuaire.co.uk/cps
nuaire.co.uk
43
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 44
MV H R
MR XB OX95- L H 1
TEC H NI C A L I NF O R MATI O N
MRXBOX95-LH1 MECHANICAL SUPPLY & EXTRACT WITH HEAT RECOVERY
UP TO 95% EFFICIENT, SAP APPENDIX Q RECOGNISED.
LOFT MOUNTING DESIGN FOR MEDIUM TO LARGE HOUSES.
44
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 45
MV H R
MR XB OX95- L H 1
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MRXBOX95-LH1 is designed to provide optimised balanced (supply and extract) mechanical ventilation with heat recovery. Tempered air is delivered into ‘living’ areas
whilst extracting moisture laden air from ‘wet’ areas, creating comfortable well ventilated homes. The unit has the facility to commission the supply and extract fans
independently on minimum speed (continuous background ventilation), boost control will control both fans to the same volume. The heat exchanger block can recover
up to 95% of the normally wasted heat.
MEETS BUILDING REGULATIONS
LIGHTWEIGHT
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
A one man lift for ease of install.
EXTREMELY LOW NOISE LEVELS
Quiet running unit, ensuring occupant acceptability.
OPTIONAL REMOTE
FAIL INDICATOR
MRXBOX95LH-RFI is
connected to the fan unit
via low voltage wiring.
VERY HIGH EFFICIENCY
To meet customer requirements on SAP scores
ensuring the reduction in emissions needed for
code level 3 and above (25% reduction).
CREATES A HEALTHIER ENVIRONMENT
LOW MAINTENANCE
DESCREET RUN MONITOR
High quality components such as filters and EC
motors ensure lowest possible maintenance and
long life motors. Filter replacement typically every 5
years.
Records units operational time.
High efficiency filters removes up to 95% of dust
particles.
EASY TO USE
Well located controls for simple installation,
commissioning and use.
LOW POWER CONSUMPTION
Reducing operating and the life cycle costs.
OPTIONAL SUMMER BYPASS AVAILABLE
COMPACT
Provides cooling during warmer months.
MRXBOX95B-LH1.
Dedicated design ensured the most compact size for
duty on the market. The loft versions are specifically
designed to go through the smallest loft hatches.
5 YEAR WARRANTY
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
FLEXIBLE LOFT MOUNTING OPTIONS
REMOVABLE G4 FILTERS
Metal bracket
attached to unit
Washer Woodscrew
A. V. mount
Ceiling joist
Option 1. Mounted on roof joists
using four “L” shape metal brackets
and AV mounts on long sides of unit.
Side view example of an ‘L’
shaped fixing bracket and AV
mount attached to ceiling joist.
Option 2. Mounted on roof joists
using four “L” shape metal brackets
and AV mounts on short sides of unit.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
45
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 46
MV H R
MR XB OX95- L H 1
TEC H NI C A L I NF O R MATI O N
PERFORMANCE - MRXBOX95-LH1
Casing
MRXBOX95-LH1
500
ISO 5801 2007
AMCA 300
450
V
Type D
Air Density 1.2 kg/m3
400
Fan Static Pressure (Pa)
350
300
5
Code descriptions
250
4
200
MR-XBOX95-LH1
|
|
| | |
150
1
3
100
2
50
1
0
0
20
40
60
80
100
120
Air volume flow rate (l/s)
1.
2.
3.
4.
5.
2
3
4 5
Multi-room supply and extract heat recovery
Product range
Efficiency
Loft application
H1 = High 1 Model
SAP APPENDIX Q TEST RESULTS
Application
Specific fan
power (W/l/s)
Heat exchange
effIciency %
Energy Saving Trust Best
Practice Performance Compliant
Kitchen Plus 1 wet room
0.61
91
Yes
Kitchen Plus 2 wet rooms
0.59
91
Yes
Kitchen Plus 3 wet rooms
0.62
91
Yes
Kitchen Plus 4 wet room
0.71
91
Yes
Kitchen Plus 5 wet rooms
0.78
91
Yes
Kitchen Plus 6 wet rooms
0.92
90
Yes
MRXBOX95-LH1
E L E C T R I C A L & S OU N D
Curve
Maximum
power consumption
(Watts)
1
11
2
Sound Power Levels dB re 1pW
63
125
250
500
1K
2K
4K
8K
dBA
@3m
Open inlet
Open outlet
Breakout
36
37
37
34
38
47
34
38
38
26
37
34
24
30
20
20
24
16
11
21
7
4
8
6
11
16
14
20
Open inlet
Open outlet
Breakout
38
43
41
35
47
47
41
47
47
29
46
42
27
39
29
23
37
31
12
30
22
12
23
21
14
25
22
3
44
Open inlet
Open outlet
Breakout
42
43
43
38
52
51
50
55
52
38
56
48
34
49
38
28
49
40
17
40
31
17
33
30
25
38
28
4
90
Open inlet
Open outlet
Breakout
43
48
45
42
56
53
55
64
55
44
64
52
42
58
44
35
58
46
22
50
37
22
40
36
32
47
35
5
160
Open inlet
Open outlet
Breakout
45
51
47
44
58
56
57
67
58
50
69
57
48
67
52
40
63
54
27
55
45
27
46
44
35
53
41
Hemisphical Free field dBA
46
029 2085 8200
The maximum power consumption shown above (Watts) is consumed on units running continuously,
not taking into account any heat recovery saving and based on SAP Appendix Q testing.
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 47
MV H R
MR XB OX95- L H 1
TEC H NI C A L I NF O R MATI O N
UNIT COMPONENTS
Filters, PCB and
Heat Exchanger Access
G4 removable filter.
Heat exchanger.
4 optional 150mm dia. knockout spigot
locations on rear of unit.
If required for use cut through the
acoustic foam round the circumference
of the knockout. (see figure above).
G4 removable filter.
Adjustment potentiometers and
indication lights.
Motor access.
4 x 125mm dia. spigots.
Panel not removable. Illustration purposes only.
DIMENSIONS (MM)
View from front 4 X 125mm spigots
Side view (controls)
4 alternative
150mm dia.
knockout spigots
on back of unit
430
Weight 21 Kg
Condensate
Drain
450
840
View from top
21.5mm dia.
condensate
drain alternative
position
Side view (non controls)
21.5mm dia.
condensate
drain alternative
position
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
47
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 48
MV H R
MR XB OX95B - L H 1
TEC H NI C A L I NF O R MATI O N
GENERAL ARRANGEMENT
OPTIONAL SUMMER BYPASS - MRXBOX95B-LH1
Filters, PCB and
Heat Exchanger Access
G4 removable filter.
Heat exchanger.
Three optional 150mm dia. knockout spigot
locations on rear of unit and one on the
side (non controls).
If required for use cut through the acoustic
foam round the circumference of the
knockout.
(see figure above)
G4 removable filter.
Adjustment potentiometers and
indication lights.
Motor access.
4 x 125mm dia. spigots.
Panel not removable. Illustration purposes only.
DIMENSIONS (MM)
Side view (controls)
View from front 3 X 125mm spigots
3 alternative
150mm dia.
knockout spigots
on back of unit
430
Weight 21 Kg
Condensate
Drain
450
840
View from top
Side view (non controls)
Alternative
150mm dia.
knockout
spigot
21.5mm dia.
condensate
drain alternative
position
48
029 2085 8200
21.5mm dia.
condensate
drain alternative
position
125mm dia.
spigot
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 49
MV H R
MR XB OX95- L H 1
TEC H NI C A L I NF O R MATI O N
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
Ventilation controls
Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
LH1 - 1.3 Amp
Fuse rating:
3 Amp
Boost
+ _
For commissioning
refer to user manual
Continuous
background
+ _ + _
Extract Supply Fan
Fan
Fan Failure
NOTE: This unit must be earthed.
The three core cable from the mains power supply should be connected
to a fixed wiring installation, via a fused isolator, in accordance with
current IEE wiring regulations.
Connection to supply cord
230V IN
50Hz Mains
L
L
N
FAN 2 SUPPLY
SUPPLY
SWL
N
FAN 1 SUPPLY
L
N
RED
YEL
WHI
BLU
RED
YEL
WHI
BLU
FAN 1 CTRL
FAIL
Connection to
Remote Fail
Indicator
FAN 2 CTRL
Fan
Connections
Detail of unit control on side panel.
Speed Control
Pots
Fan Failure
Indicator
Earth point
Note: Wiring is for reference
purposes only as the connections
above are factory fitted.
The unit is pre-wired with a
2 metre fly lead.
UNIT SERVING KITCHEN AND BATHROOM
MAINS
230V N
50Hz L
Room
Fuse 2A
light
Light
switch
(Double
Pole) Kitchen switch
Green/yellow
Blue
Brown
Black
3 Pole
isolator
Summer
bypass
switch
Supply cord
from unit
Grey (only used
on bypass unit)
UNIT SERVING KITCHEN AND TWO BATHROOMS
MAINS
230V N
50Hz L
Fuse 2A
Light
switches
(Double
Pole)
Room
lights
Kitchen switch
Download specification from www.nuaire.co.uk/specifications
Green/yellow
Blue
Brown
Black
3 Pole
isolator
Summer
bypass
switch
Supply cord
from unit
Grey (only used
on bypass unit)
nuaire.co.uk
49
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 50
MV H R
MR XB OX95- L H 1
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI F I C ATION
OPERATION
OPTIONAL SUMMER BYPASS - MRXBOX95B-LH1
The supply and extract ventilation unit shall be positioned as indicated on the
drawings and shall be in accordance with the particular fan schedule in the
specification.
The bypass damper opens when a 230V signal is applied to the unit (via a
manual switch, supplied). This opens the damper via an actuator. When the
switch signal is de-activated the unit returns to its original state (air through the
heat exchanger).
The combined supply and extract with heat recovery unit, shall supply filtered
fresh air to each of the habitable rooms and vitiated air shall be extracted from
the wet areas e.g. bathroom, en-suite, w.c, kitchen, utility rooms, etc. The supply
air shall be pre-heated by the warm extract air via the integrated counter-flow
heat exchanger element.
The extracted air shall also be filtered before it reaches the heat exchanger block.
The ventilation unit shall vary its speed and therefore the ventilation rate, as it
receives signals from one of the following:
• Switched live signal from light / remote switches.
When signals are received, the fan shall alter its speed to adjustable, normal and
boost rates.
The unit shall have the facility to commission the supply and extract fans
independently on minimum speed (continuous background ventilation), boost
control will control both fans to the same volume, via inbuilt minimum and
maximum speed adjustment;. The fans shall have infinitely variable speed control.
MRXBOX95-LH1 - UNIT SPECIFICATION
The unit shall be fully insulated providing excellent thermal and acoustic
characteristics and shall be complete with a multi plate counter flow high
efficiency heat exchanger block, with a thermal efficiency of up to 95%. The heat
exchanger shall be protected by G4 grade filters on fresh air inlet and system
extract. The heat exchanger and filters shall be accessible via the top access
panel, enabling quick and easy maintenance.
The unit shall have low energy, high efficiency EC fan/motor assemblies with
sealed for life bearings, the impellers shall be backward curved centrifugal type.
The motors shall be suitable of an ambient temperature of 40ºC.
The unit shall be supplied complete with an insulated condensate drip tray and
21.5mm drain connection.
The unit shall be suitable for 150mm or 125mm circular ducting.
Anti-vibration mounts are supplied with each unit to prevent vibration being
transmitted to the ceiling timbers.
The breakout noise level and power requirements shall be as detailed by the unit
manufacturer and in accordance with the ventilation equipment schedule.
50
029 2085 8200
Outside air supplied through the bypass is still filtered, so the air quality is
optimal, irrespective of the bypass setting (Open or closed).
MRXBOX95-LH1 - CONTROL OPTIONS
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer: • Independent control of background supply and extract flow rates.
• Single control of boost ventilation rates
• Run time monitor included
• Integral Fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
OPTIONAL CONTROL
MRXBOX95LH-RFI Remote fail indicator.
Units shall be the MRXBOX95-LH1 as manufactured by Nuaire.
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:46 Page 51
ST YL I SH KITCHEN EXTRACT SOLUTION
F O R USE WITH CENTRAL EXTRACT SYSTEM
( M E V, MVHR & CONSTANT PRESSURE)
This easy to clean 60cm stainless steel cookerhood unit is fitted with
two, washable metallic grease filters for quick and easy maintenance.
The push button located on the front of the unit illuminates the
cooking area and provides a switched live signal to trigger boost
function (when linked to a Nuaire MEV, MVHR or damper system).
• Extraction tube 125mm diameter ducting
Metallic grease filters.
• Incorporates a simple boost facility – the light switch
on unit acts as trigger for boost facility
• 2 metallic grease filters
• 2 lights
• 2 year warranty
The Cookerhood does not contain a fan. Extract is via a
separate fan unit e.g. MEVDC, MVHR or Constant Pressure CVD.
Coding: CKRH
Push button for lights and boost signal.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
51
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 52
MV H R
MR XB OX95- L H 2
TEC H NI C A L I NF O R MATI O N
MRXBOX95-LH2 MECHANICAL SUPPLY & EXTRACT WITH HEAT RECOVERY
UP TO 95% EFFICIENT, SAP APPENDIX Q RECOGNISED.
LOFT MOUNTING DESIGN FOR LARGER HOUSES.
52
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 53
MV H R
MR XB OX95- L H 2
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MRXBOX95-LH2 is designed to provide optimised balanced (supply and extract) mechanical ventilation with heat recovery. Tempered air is delivered into ‘living’ areas
whilst extracting moisture laden air from ‘wet’ areas, creating comfortable well ventilated homes. The unit has the facility to commission the supply and extract fans
independently on minimum speed (continuous background ventilation), boost control will control both fans to the same volume. The heat exchanger block can recover
up to 95% of the normally wasted heat.
MEETS BUILDING REGULATIONS
LIGHTWEIGHT
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
A one man lift for ease of install.
OPTIONAL REMOTE
FAIL INDICATOR
Quiet running unit, ensuring occupant acceptability.
MRXBOX95LH-RFI is
connected to the fan unit
via low voltage wiring.
To meet customer requirements on SAP scores
ensuring the reduction in emissions needed for
code level 3 and above (25% reduction).
CREATES A HEALTHIER ENVIRONMENT
DISCREET RUN MONITOR
High efficiency filters removes up to 95% of dust
particles.
Records units operational time.
LOW MAINTENANCE
PREVENTS CONDENSATION FROM LOFT
EXTREMELY LOW NOISE LEVELS
VERY HIGH EFFICIENCY
High quality components such as filters and EC
motors ensure lowest possible maintenance and
long life motors. Filter replacement typically every 5
years.
EASY TO USE
Well located controls for simple installation,
commissioning and use.
LOW POWER CONSUMPTION
OPTIONAL SUMMER BYPASS AVAILABLE
Reducing operating and the life cycle costs.
Provides cooling during warmer months.
MRXBOX95B-LH2.
COMPACT
Dedicated design ensured the most compact size for
duty on the market. The loft versions are specifically
designed to go through the smallest loft hatches.
5 YEAR WARRANTY
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
FLEXIBLE LOFT MOUNTING OPTIONS
REMOVABLE G4 FILTERS
Metal bracket
attached to unit
Washer Woodscrew
A. V. mount
Ceiling joist
Option 1. Mounted on roof joists
using four “L” shape metal brackets
and AV mounts on long sides of unit.
Side view example of an ‘L’
shaped fixing bracket and AV
mount attached to ceiling joist.
Option 2. Mounted on roof joists
using four “L” shape metal brackets
and AV mounts on short sides of unit.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
53
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 54
MV H R
MR XB OX95B - L H 2
TEC H NI C A L I NF O R MATI O N
UNIT COMPONENTS
Filters, PCB and
Heat Exchanger Access
G4 removable filter.
Heat exchanger.
4 optional 150mm dia. knockout spigot
locations on rear of unit.
If required for use cut through the
acoustic foam round the circumference
of the knockout. (see figure above).
G4 removable filter.
Adjustment potentiometers and
indication lights.
Motor access.
4 x 125mm dia. spigots.
Panel not removable. Illustration purposes only.
DIMENSIONS (MM)
View from front 4 X 125mm spigots
Side view (controls)
4 alternative
150mm dia.
knockout spigots
on back of unit
430
Weight 21 Kg
Condensate
Drain
450
840
View from top
Side view (non controls)
21.5mm dia.
condensate
drain alternative
position
54
029 2085 8200
21.5mm dia.
condensate
drain alternative
position
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 55
MV H R
MR XB OX95- L H 2
TEC H NI C A L I NF O R MATI O N
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
Ventilation controls
Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
LH2 - 2.2 Amp
Fuse rating:
3 Amp
Boost
+ _
For commissioning
refer to user manual
Continuous
background
+ _ + _
Extract Supply Fan
Fan
Fan Failure
NOTE: This unit must be earthed.
L
L
N
FAN 2 SUPPLY
SUPPLY
SWL
N
FAN 1 SUPPLY
L
N
RED
YEL
WHI
BLU
RED
YEL
WHI
BLU
FAN 1 CTRL
FAIL
Connection to
Remote Fail
Indicator
FAN 2 CTRL
Fan
Connections
Connection to supply cord
230V IN
50Hz Mains
Detail of unit control on side panel.
The three core cable from the mains power supply should be connected
to a fixed wiring installation, via a fused isolator, in accordance with
current IEE wiring regulations.
Speed Control
Pots
Fan Failure
Indicator
Earth point
Note: Wiring is for reference
purposes only as the connections
above are factory fitted.
The unit is pre-wired with a
2 metre fly lead.
UNIT SERVING KITCHEN AND BATHROOM
MAINS
230V N
50Hz L
Room
Fuse 2A
light
Light
switch
(Double
Pole) Kitchen switch
Green/yellow
Blue
Brown
Black
3 Pole
isolator
Summer
bypass
switch
Supply cord
from unit
Grey (only used
on bypass unit)
UNIT SERVING KITCHEN AND TWO BATHROOMS
MAINS
230V N
50Hz L
Fuse 2A
Light
switches
(Double
Pole)
Room
lights
Kitchen switch
Download specification from www.nuaire.co.uk/specifications
Green/yellow
Blue
Brown
Black
3 Pole
isolator
Summer
bypass
switch
Supply cord
from unit
Grey (only used
on bypass unit)
nuaire.co.uk
55
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 56
MV H R
MR XB OX95- L H 2
TEC H NI C A L I NF O R MATI O N
GENERAL ARRANGEMENT
OPTIONAL SUMMER BYPASS - MRXBOX95B-LH2
Filters, PCB and
Heat Exchanger Access
G4 removable filter.
Heat exchanger.
Three optional 150mm dia. knockout spigot
locations on rear of unit and one on the
side (non controls).
If required for use cut through the acoustic
foam round the circumference of the
knockout.
(see figure above)
G4 removable filter.
Adjustment potentiometers and
indication lights.
Motor access.
4 x 125mm dia. spigots.
Panel not removable. Illustration purposes only.
DIMENSIONS (MM)
Side view (controls)
View from front 3 X 125mm spigots
3 alternative
150mm dia.
knockout spigots
on back of unit
430
Weight 21 Kg
Condensate
Drain
450
840
View from top
Side view (non controls)
Alternative
150mm dia.
knockout
spigot
21.5mm dia.
condensate
drain alternative
position
56
029 2085 8200
21.5mm dia.
condensate
drain alternative
position
125mm dia.
spigot
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 57
MV H R
MR XB OX95- L H 2
TEC H NI C A L I NF O R MATI O N
PERFORMANCE - MRXBOX95-LH2
Casing
MRXBOX95-LH2
700
ISO 5801 2007
AMCA 300
650
600
V
550
Type D
Air Density 1.2 kg/m3
500
Fan Static Pressure (Pa)
450
400
6
Code descriptions
350
300
5
MR-XBOX95-LH2
|
|
| | |
250
200
4
1
150
2
3 4 5
3
100
2
50
1
0
0
20
40
60
80
100
120
140
Air volume flow rate (l/s)
1. Multi-room supply and extract heat
recovery
2. Product range
3. Efficiency
4. Loft application
5. H2 = High 2 Model
SAP APPENDIX Q TEST RESULTS
Application
Specific fan
power (W/l/s)
Heat exchange
effIciency %
Energy Saving Trust Best
Practice Performance Compliant
Kitchen Plus 1 wet room
0.81
91
Yes
Kitchen Plus 2 wet rooms
0.77
91
Yes
Kitchen Plus 3 wet rooms
0.78
91
Yes
Kitchen Plus 4 wet room
0.86
91
Yes
Kitchen Plus 5 wet rooms
0.96
91
Yes
Kitchen Plus 6 wet rooms
1.09
90
No
MRXBOX95-LH2
E L E C T R IC A L & S OU N D
Curve
Maximum
power consumption
(Watts)
1
16
2
Sound Power Levels dB re 1pW
63
125
250
500
1K
2K
4K
8K
dBA
@3m
Open inlet
Open outlet
Breakout
36
40
40
33
38
38
34
39
36
24
38
30
22
32
21
19
30
21
20
29
20
23
30
18
13
22
14
30
Open inlet
Open outlet
Breakout
40
41
41
39
49
49
41
49
46
30
49
41
28
42
31
24
41
32
21
30
21
24
33
20
18
32
24
3
62
Open inlet
Open outlet
Breakout
43
50
50
42
53
52
54
59
56
38
60
52
37
52
41
31
52
43
30
42
33
33
34
30
29
42
34
4
106
Open inlet
Open outlet
Breakout
44
50
50
46
58
57
57
65
62
43
63
55
42
58
47
37
59
50
30
50
41
33
40
36
33
47
40
5
170
Open inlet
Open outlet
Breakout
46
51
51
48
61
60
58
70
67
52
74
66
48
64
53
42
64
55
30
56
47
33
48
44
36
55
47
6
277
Open inlet
Open outlet
Breakout
50
56
56
54
65
64
62
72
69
62
77
69
55
69
60
47
69
60
39
61
52
38
54
50
43
58
51
Hemisphical Free field dBA
The maximum power consumption shown above (Watts) is consumed on units running continuously,
not taking into account any heat recovery saving and based on SAP Appendix Q testing.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
57
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 58
MV H R
MR XB OX95- L H 2
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI F I C ATION
OPERATION
OPTIONAL SUMMER BYPASS - MRXBOX95B-LH2
The supply and extract ventilation unit shall be positioned as indicated on the
drawings and shall be in accordance with the particular fan schedule in the
specification.
The bypass damper opens when a 230V signal is applied to the unit (via a
manual switch, supplied). This opens the damper via an actuator. When the
switch signal is de-activated the unit returns to its original state (air through the
heat exchanger). Outside air supplied through the bypass is still filtered, so the
air quality is optimal, irrespective of the bypass setting (Open or closed).
The combined supply and extract with heat recovery unit, shall supply filtered
fresh air to each of the habitable rooms and vitiated air shall be extracted from
the wet areas e.g. bathroom, en-suite, w.c, kitchen, utility rooms, etc. The supply
air shall be pre-heated by the warm extract air via the integrated counter-flow
heat exchanger element. The extracted air shall also be filtered before it reaches
the heat exchanger block.
The ventilation unit shall vary its speed and therefore the ventilation rate, as it
receives signals from one of the following:
• Switched live signal from light / remote switches.
When signals are received, the fan shall alter its speed to adjustable, normal and
boost rates.
The unit shall have the facility to commission the supply and extract fans
independently on minimum speed (continuous background ventilation), boost
control will control both fans to the same volume, via inbuilt minimum and
maximum speed adjustment;. The fans shall have infinitely variable speed control.
MRXBOX95-LH2 - UNIT SPECIFICATION
The unit shall be fully insulated providing excellent thermal and acoustic
characteristics and shall be complete with a multi plate counter flow high
efficiency heat exchanger block, with a thermal efficiency of up to 95%. The heat
exchanger shall be protected by G4 grade filters on fresh air inlet and system
extract. The heat exchanger and filters shall be accessible via the top access
panel, enabling quick and easy maintenance.
The unit shall have low energy, high efficiency EC fan/motor assemblies with
sealed for life bearings, the impellers shall be backward curved centrifugal type.
The motors shall be suitable of an ambient temperature of 40ºC.
The unit shall be supplied complete with an insulated condensate drip tray and
21.5mm drain connection.
The unit shall be suitable for 150mm or 125mm circular ducting. Anti-vibration
mounts are supplied with each unit to prevent vibration being transmitted to
the ceiling timbers.
The breakout noise level and power requirements shall be as detailed by the unit
manufacturer and in accordance with the ventilation equipment schedule.
58
029 2085 8200
MRXBOX95-LH2 - CONTROL OPTIONS
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer: • Independent control of background supply and extract flow rates.
• Single control of boost ventilation rates
• Run time monitor included
• Integral Fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
OPTIONAL CONTROL
MRXBOX95LH-RFI Remote fail indicator.
Units shall be the MRXBOX95-LH2 as manufactured by Nuaire.
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 59
Want to find out more about building
regulations and residential ventilation?
You may have taken advantage of
our recent CPD seminars on natural ventilation for
commercial buildings but did you know Nuaire offer a wide
range of CPD seminars for residential ventilation as well?
So if you are working on apartments, mixed use developments
or purely residential plots we can offer the right CIBSE
accredited training for you, including a comprehensive guide to
the domestic building regulations.
New seminars from Nuaire also include:
• BPEC accredited domestic installation training
• Sunwarm Air (new Solar Air Pre-heat PIV category for SAP Appendix Q)
• Natural ventilation
• Smoke solutions
• Overview of Air Handling Units
Contact your local representative, email [email protected]
or call 02920 858463 to organise a seminar.
nuaire.co.uk
59
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 60
MV H R
MR XB OX90L
TEC H NI C A L I NF O R MATI O N
M RX B OX 9 0 L - WHO L E HO USE HEAT RECOVERY UNIT
90% EFFICIENT, SAP APPENDIX Q RECOGNISED
AND PASSIVE HOUSE CERTIFIED HEAT RECOVERY UNIT.
60
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 61
MV H R
MR XB OX90L
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MEETS REGULATIONS
LOW AND EASY MAINTENANCE
SAP Appendix Q recognised.
Certified by Passivhaus Institut.
Unit is fitted with filter indication display. Easy
access to filters via “tool free” hinged door.
HIGH EFFICIENCY
SIMPLE TO SET UP
90% efficient, with DC motors using 50% less
energy than traditional fans.
Units have a display for easy installation.
AUTOMATIC SUMMER BYPASS AS
STANDARD
EXTREMELY LOW NOISE LEVELS
Acoustic insulation ensures the ideal solution for
loft or cupboard installations.
GUARANTEED CONSTANT AIRFLOW
Unit has summer bypass as standard. Unit
continuously monitors the temperature inside and
outsde and will bypass the heat exchanger when
appropriate.
MULTI OPTION CONTROLS AND
SENSORS
Inbuilt controls that automatically adjust the fan
speed to suit the individual systems pressure drop.
Wide choice of controls including 3 speed
trickle/boost and purge and optional wireless
remote control.
WARRANTY
5 year warranty for peace of mind.
2 self adjusting fans provide constant fresh air.
HEALTHY ENVIRONMENT
Removes up to 95% of the dust from the
atmosphere.
1
Removable filters.
Facia mounted control panel.
Optional receiver.
Optional wireless remote control.
Download specification from www.nuaire.co.uk/specifications
Speed selector switch (included).
Typical installation with unit mounted in loft.
nuaire.co.uk
61
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 62
MV H R
MR XB OX90L
TEC H NI C A L I NF O R MATI O N
PERFORMANCE - MRXBOX90L
Casing
Air Performance of MRXBOX90L
600
0
36
72
108
144
180
216
252
288
324
360
396
(m3/hr)
432 468
ISO 5801 2007
AMCA 300
550
V
Type D
Air Density 1.2 kg/m3
Resistance Duct Pressure (Pa)
500
450
Code descriptions
400
MR - XBOX - 90 - L
|
|
| |
350
300
1
250
1.
2.
3.
4.
200
150
100
Speed 1
50
10
20
26
30
40
50
60
4
Multi-room Supply and extract heat recovery
Range
Efficiency
Size
Note: Speeds 1, 2 and 3 are factory default
settings and can be adjusted to suit individual
requirements.
63
0
0
3
Speed 3
Speed 2
11
2
70
80
90
100
110
120
130
No.
= Power consumption.
Flow rate (l/s)
MRXBOX90L
E L E C T R I C A L , S OU N D & W E I GH T
Speed
1
Code
mrXbox90L
Phase
1
Total motor
power
watts
23
Full load
current
amps
0.17
2
mrXbox90L
1
67
0.45
3
mrXbox90L
1
175
1.16
Breakout
Supply
Extract
Breakout
Supply
Extract
Breakout
Supply
Extract
Induct Sound Power Levels dB re 1pW
63
125
250
500
1K
45
38
36
32
26
50
51
48
48
49
36
33
21
23
15
50
47
43
38
37
59
63
59
58
57
46
47
35
33
30
60
57
53
47
44
65
68
68
66
64
52
57
46
42
38
2K
18
40
7
31
52
22
43
61
34
4K
7
34
8
25
48
16
37
57
29
8K
9
23
15
22
41
16
37
52
20
Breakout
dBA
Weight
@3m
Kg
33
40
42
51
Note: Speeds 1, 2 and 3 are factory default settings and can be adjusted to suit individual requirements.
MRXBOX90L
View from front
165
2 = spigot to outside.
Exhaust (cool stale air).
4
2
3
5
Access
door
535
1
510
336
1 = spigot todwelling.
Supply (warmed fresh air).
602
114
89
126
Dimensional references:
53
Bottom view
4 x 180dia spigots View from top
230
DIMENSIONS (MM) MRXBOX90L
20mm dia.
3 = spigot from dwelling.
Extract (warm stale air).
4 = spigot from outside.
Intake (cool fresh air).
5 = electric connections
6 = detail wall mounting (make
sure to correctly place the
rubber strip, washers and caps).
62
029 2085 8200
385
6
675
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 63
MV H R
MR XB OX90L
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI FIC ATION
OPERATION
The supply and extract ventilation unit shall be positioned as indicated on the
drawings and shall be in accordance with the particular fan schedule in the
specification.
The unit shall have low energy, high efficiency d.c. fan/motor assemblies with
sealed for life bearings, the impellers shall be forward curved centrifugal type. The
motors shall be suitable of an ambient temperature of 40ºC.
The combined supply and extract with heat recovery unit, shall supply filtered
fresh air to each of the habitable rooms and vitiated air shall be extracted from
the wet areas e.g. bathroom, en-suite, w.c, kitchen, utility rooms, etc. The supply
air shall be pre-heated by the warm extract air via the integrated counter-flow
heat exchanger element. The extracted air shall also be filtered before it reaches
the heat exchanger block.
The unit shall have integral temperature sensors that shall monitor the incoming
and extracted air temperatures to provide frost protection as well as controlling
the summer bypass.
The ventilation unit shall vary its speed and therefore the ventilation rate, as it
receives signals from one of the following:
The unit shall be supplied complete with an insulated condensate drip tray and
20mm drain connection.
• Manual activation from 3 position switch.
The breakout noise level and power requirements shall be as detailed by the unit
manufacturer and in accordance with the ventilation equipment schedule.
• Optional remote RF boost switch humidity sensor.
A fascia mounted control unit with microprocessor controls with LCD display
enabling infinitely variable adjustment of the air volume.
Via optional PCB.
MRXBOX90L - CONTROL OPTIONS
• Optional externally interconnected sensors.
When signals are received, the fan shall alter its speed to selectable, pre-set
normal and boost rates.
The unit shall have the facility to commission the supply and extract fans via
inbuilt minimum and maximum speed adjustment; the fans shall have infinitely
variable speed control. Once the duty of the fans is set on the facia mounted
controller the unit shall automatically adjust its speed to maintain the air
volume flow rate selected on a constant volume principle.
All versions shall have a pre-wired and factory fitted, fascia mounted multi
function control panel with LCD display providing the following:
• Integral speed control on supply and extract – 3 speeds available: 1. Low speed background ventilation control/set point.
2. Medium speed ventilation control/set point, for day to day boost.
3. High speed ventilation control/set point for summer boost.
• Constant volume facility to adjust for system pressure.
• Filter dirty & maintenance indication on fascia control.
A summer bypass shall be included that shall allow fresh air to bypass the heat
exchanger, when the incoming air temperature is at or above the designated “set
point”.
The standard warranty for MRXBOX90 series shall be for 5 years.
MRXBOX90L - UNIT SPECIFICATION
The unit shall be fully insulated providing excellent thermal and acoustic
characteristics and shall be complete with a multi plate counter flow high
efficiency heat exchanger block, with a thermal efficiency of up to 95%. The heat
exchanger shall be protected by G4 grade filters on fresh air inlet and system
extract. The heat exchanger and filters shall be accessible via facia access panels,
enabling quick and easy maintenance.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
63
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 64
MV H R
L P XB OXDC - 2
TEC H NI C A L I NF O R MATI O N
L P X B OX D C- 2 L OW P RO F I LE HEAT RECOVERY FOR APARTMENTS
VERY LOW DEPTH HEAT RECOVERY UNIT WITH MULTIPLE SPIGOTS.
SAP APPENDIX Q RECOGNISED.
64
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 65
MV H R
L P XB OXDC - 2
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
MEETS BUILDING REGULATIONS
LOW MAINTENANCE COSTS
MULTIPLE SPIGOT OPTIONS
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
Aluminium heat exchanger block and drip tray are
easily accessible for quick and easy access.
Easy installation position.
FLEXIBLE CONDENSATE
QUICK INSTALLATION
VERY LOW DEPTH - WITHIN CEILING
FITTING
Single point bracket ideal for quick 1st and 2nd fix.
Condensate drain option, either left or right hand
side.
185mm, ideal forapplications where space is at a
premium.
HEALTHY ENVIRONMENT
WARRANTY
Removes up to 95% of the dust from the
atmosphere.
5 year warranty for peace of mind.
LOW NOISE LEVELS
Acoustic lining ensures unit is ideal for applications
where noise is an issue.
HIGH EFFICIENCY
ADVICE AND INSTALLATION SERVICE
Please contact Nuaire on 02920 858 200 (or email
[email protected]) for advice on ventilation
solutions.
Heat exchanger is up to 70% effectiveness with low
energy DC motors and components help to
minimise electrical energy consumed.
TYPICAL INSTALLATION
Ceiling Grid
Mounted
Supply Diffuser
Ceiling
Mounted
Extract Grille
Extract Air
Fresh inlet
Exhaust to
outside
lpXboxdc-2 in
ceiling void
Knockout spigots.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
65
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 66
MV H R
L P XB OXDC - 2
TEC H NI C A L I NF O R MATI O N
PERFORMANCE LPXBOXDC-2
DIMENSIONS (MM) LPXBOXDC
LPXBOXDC-2
(m3/hr)
685mm
36
72
108
144
180
216
252
288
ISO 5801 2007
AMCA 300
450
185mm
10mm
0
V
Type D
Air Density 1.2 kg/m3
Fan Static Pressure (Pa)
400
850mm
350
Knockout spigots
3 x 100mm and 3 x 125mm
300
250
Code descriptions
200
3
4
75%
100%
150
LP - XBOX - DC-2
|
|
|
100
1
2
25%
50
50%
1
0
0
10
20
30
40
50
60
70
80
Air volume flow rate (l/s)
2
3
1. Low profile
2. Range
3. Direct current
LPXBOXDC-2
E L E C T R I C A L , S OU N D & W E I GH T
Ref
1 (25%)
Supply fan 5
0.05
Extract fan 5
0.05
Supply fan 17
0.1
Extract fan 17
0.1
Supply fan 51
0.3
Extract fan 51
0.3
Supply fan 120
0.7
Extract fan 120
0.7
2 (50%)
3 (75%)
4 (100%)
**W
FLC
amps
Curve
Inlet
Outlet
Inlet
Outlet
Inlet
Outlet
Inlet
Outlet
Inlet
Outlet
Inlet
Outlet
Inlet
Outlet
Inlet
Outlet
Sound figures Induct sound power level re 1pW
125
250
500
1K
2K
4K
8K
29
19
18
35
45
35
34
51
55
45
44
61
62
52
51
68
7
4
5
26
23
12
9
42
33
22
19
52
40
29
26
59
2
4
5
16
15
9
9
32
25
19
19
42
32
26
26
49
31
26
26
39
47
42
42
55
57
52
52
65
64
59
59
72
28
23
17
43
44
39
33
59
54
49
43
69
61
56
50
76
15
14
7
34
31
30
23
50
41
40
33
60
48
47
40
67
16
8
4
34
32
24
19
50
42
34
29
60
49
41
36
67
Breakout Weight
dBA @3m Kg
15
25
15
29
38
44
*Fans are programmed with a soft start, therefore starting current is the same as the FLC. Please note step curves shown are for information purposes only and are not individual units.
The units actual duty range is infinitely variable. **W = Watts are total power consumption.
S A P A PPE N DI X Q T E S T R E S U LT S
Application
Specific fan power
Heat exchange efficiency
Energy Savign Trust Best Practice
(W/l/s)
(%)
Performance Compliant
Kitchen + 1 wetroom
0.80
66
No
Kitchen + 2 wetrooms
0.76
65
No
Kitchen + 3 wetrooms
0.79
64
No
Kitchen + 4 wetrooms
0.89
62
No
Kitchen + 5 wetrooms
1.04
61
No
Kitchen + 6 wetrooms
1.37
60
No
Kitchen + 7 wetrooms
1.69
59
No
66
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 67
MV H R
L P XB OXDC - 2
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI FIC ATION
OPERATION
LPXBOXDC-2 CONTROL OPTIONS
The supply and extract ventilation unit shall be as indicated on the drawings and
shall be in accordance with the particular fan schedule in the specification. The
ventilation unit shall automatically vary the ventilation rate, as it receives signals
from one of the optional interconnected sensors. When signals are received, the
fan shall either vary its speed proportionally or on a trickle and boost principle.
The unit shall have the facility to commission the supply and extract fans
individually via inbuilt minimum and maximum speed adjustment, the fans
themselves shall have infinitely variable speed control.
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer: • Integral speed control on supply and extract.
• Integral background ventilation control/set point.
• Integral boost ventilation control/set point.
• Integral run on timer.
• Volt free failure indication (direct from individual fan).
• Integral S/L terminal for boost from remote switch, e.g. light switch.
LPXBOXDC-2 UNIT SPECIFICATION
The fans shall be acoustically lined with high density class “O” flame retardant
insulation, giving extremely low noise levels. The unit shall have a heat exchanger
block manufactured from aluminium with a thermal efficiency of approximately
70% which shall be protected by G2 grade filters on supply and extract. It shall
come complete with a condensate drip tray and 22mm drain connection, integral
minimum and maximum speed controls, run on timer and facia mounted failure
indication. The breakout noise level and power requirements shall be as detailed
by the unit manufacturer and as detailed in the ventilation equipment schedule.
The unit shall have low energy, high efficiency d.c. fan/motor assemblies with
sealed for life bearings. The depth of the low profile unit shall not be greater than
185mm and shall incorporate a low profile single point mounting bracket, (allow
10mm for bracket). The unit shall be constructed with one removable panel
allowing full maintenance access to all components. To facilitate the
interconnection of branch ducts the unit shall have multiple spigot connections
with integrated balancing dampers. Spigot connections provided.
Download specification from www.nuaire.co.uk/specifications
Units shall be the LPXBOXDC-2 as manufactured by Nuaire.
The standard warranty for LPXBOXDC series shall be for 5 years.
nuaire.co.uk
67
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 68
MV H R
C O O K ER B OX
TEC H NI C A L I NF O R MATI O N
CO O KE RX B OX - KI T CHE N C ANOPY HEAT RECOVERY SYSTEM
SPACE SAVING ABOVE COOKER HEAT RECOVERY UNIT WITH
INTEGRAL AUTOMATIC BOOST.
650mm
minimum
68
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 69
MV H R
C O O K ER B OX
TEC H NI C A L I NF O R MATI O N
B E NE F I T S
SLIM LINE PROFILE
FLEXIBLE INSTALLATION
ADVICE AND INSTALLATION SERVICE
Designed to sit behind cupboard door.
Connections are either from the sides or top. Side
connections are used to enable the ducting to run
across the top of kitchen wall units.
Please contact Nuaire on 02920 858 200 (or email
[email protected]) for advice on ventilation
solutions and installation service.
QUICK & EASY MAINTENANCE
WARRANTY
Front and underneath panels allows for quick access
to condensate drain and electrical supply, with
washable grease filters.
5 year warranty for peace of mind.
HEAT RECOVERY
From 66% effective. Recovers heat when cooking,
supplying warm air into dwelling avoiding
condensation.
MEETS REGULATIONS
New build ‘best practice’ rating in GPG 268.
FINISH
FLEXIBLE SPEED CONTROL
White pre-coated steel finish with white ABS spigot
connections.
4 speed settings with automatic boost facility
(thermostat senses air temp and boosts when
required).
TYPICAL INSTALLATION
Alternative spigot postion.
Air supply
to home
Supply air
from outside
Extract
from
bathroom
en-suite
Grease filter
Exhaust air
to outside
Extract flow above hob
Designed to sit behind the cupboard door.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
69
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 70
MV H R
C O O K ER B OX
TEC H NI C A L I NF O R MATI O N
PERFORMANCE - COOKERXBOX
Casing
COOKERXBOX Supply Fan
0
3
(m /hr)
36
72
108
144
180
216
300
ISO 5801 2007
AMCA 300
250
Type D
Air Density 1.2 kg/m3
Fan Static Pressure (Pa)
V
200
150
100
Boost
3
50
1
0
5
4
0
2
10
20
30
40
50
60
Code
Air volume flow rate (l/s)
CKR XBOX
COOKERXBOX Extract Fan
0
36
(m3/hr)
72
108
144
180
216
ISO 5801 2007
AMCA 300
300
V
Fan Static Pressure (Pa)
250
Type D
Air Density 1.2 kg/m3
200
150
Boost
100
4
5
50
1
0
0
2
10
3
20
30
40
50
60
Air volume flow rate (l/s)
B
Access panels
In order to make connections for the
condensate drain and electrical supply the
access panels shown should be removed,
starting with No.1. All panels should be stored
safely to avoid damage.
A = Supply air to house.
3
A
Fixing holes
1
D
2
C
B = Extract air from bathroom/ensuite.
C = Exhaust air to outside.
D = Supply air from outside.
4
70
029 2085 8200
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 71
MV H R
C O O K ER B OX
TEC H NI C A L I NF O R MATI O N
COOKERXBOX
E L E C T R IC A L , S OU N D & W E I GH T
Phase
Motor
power
kW
Full load*
current
amps
1
60
0.260
4
34
3
24
2
1
Extract Fan
Curve
Code
5
ckrXbox
Induct Sound Power Levels dB re 1pW
63
125 250 500 1K
2K
4K
8K
Breakout
dBA
Weight
@3m Kg
Boost open inlet
58
60
62
53
47
45
40
30
39
0.140
Speed 4 open inlet
52
54
55
46
40
38
29
26
31
0.105
Speed 3 open inlet
49
51
43
40
34
30
24
25
24
18
0.080
Speed 2 open inlet
48
51
39
35
30
25
22
20
21
12
0.060
Speed 1 open inlet
44
45
37
32
27
23
22
20
18
20
Supply Fan
5
60
0.260
Boost open outlet
51
63
71
66
65
61
54
44
52
4
ckrXbox
1
37
0.140
Speed 4 open outlet
48
52
64
61
59
54
45
36
46
3
24
0.105
Speed 3 open outlet
44
50
53
54
53
47
35
28
39
2
18
0.080
Speed 2 open outlet
38
39
41
41
39
27
22
20
25
1
12
0.060
Speed 1 open outlet
38
39
37
32
27
23
22
20
17
Note: Part L1 compliance: Specific Fan Power (SFP) will be less than 2.0 for typical system resistances (estimated at 75Pa for boost condition),
at default speeds (1 and 3). Minimum heat exchanger efficiency at all settings is 66%.
*Unit has a soft start function therefore the starting current is same as flc.
DIMENSIONS (MM) COOKERXBOX
View from bottom
View from front
View from side
Electrical
supply inlet
25
25
100 dia.
25
65
100
dia.
200
79
500
563
22mm
dia.
127.5
538
538
Condensate
connection
89
595mm
Download specification from www.nuaire.co.uk/specifications
295mm
nuaire.co.uk
71
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 72
MV H R
C O O K ER B OX
TEC H NI C A L I NF O R MATI O N
DUCTING CONNECTIONS
TOP SPIGOT FUNCTIONS
There are four ducting connections to be made
from the sides of the unit. The four ducting
positions on the top of the unit can be employed
for other installation options.
For optional installation choice. The numbered
spigots perform the same function as the
equivalent numbered side spigots.
SIDE SPIGOT FUNCTIONS
1) Fresh air input to unit (100mm dia).
4
2) Exhaust air to outside (100mm dia).
3
3) Fresh air supply to dwelling (100mm dia).
This duct should terminate via a
discharge diffuser located centrally
within the dwelling.
1
4) Extract air from bathroom/en-suite
(100mm dia).
2
Note: the distance between the underside of the unit and
the supporting surface for the cooking vessel must be at
least 650mm.
WIRING - COOKERXBOX
Circuit board connections.
GRN
BLK
BRN
BLU
GRN
SUPPLY
FAN
N
Room
light
BLK
L
N
BRN
L
EXTRACT
FAN
230V
1ph
50Hz
supply
3 pole fan isolator
BLU
Fuse 3 amp
SL
Aux switch(es)
(optional)
SUPPLY
SPEED
2
1
EXTRACT
SPEED
SETPOINT
1
26 28 30
2
3
3
24
22
4
4
Operation
42
TEMP
SENSOR
B
LIVE
L
NEUTRAL
N
EARTH
SW LIVE
Fan Speeds
Unless onsite conditions dictate otherwise both supply and extract fans
should be set on the lowest setting.
Boost Set Point
Boost should be triggered whilst cooking. It is suggested the set point
should be set to 32oC although this may need changing depending on the
user lifestyle.
Connecting Auxillary Switches
It is possible to provide additional control of the unit by means of up to
two auxilliary switches connected to the switched live. These switches may
be operated manually or by additional Thermostats, Humidistats and PIR
Detectors.
72
SUPPLY
B
A
Boost Fan/s Selection
By default only the extract fan boosts to full speed.
To change this to boost the supply fan as well as the
extract fan, move link to position B.
029 2085 8200
40
A
The unit is designed to continuously supply and extract air. The unit
contains a thermostat to sense the extract air temperature. When the
temperature exceeds the boost set point the extract fan boosts to full
speed. Boost speed may also be activated by remote switch/es. Ensure that
supply/extract motor wires are swapped over if opposite hand is required.
32
34
36
38
SL
Nuaire Residential MVHR 1_Layout 1 12/08/2011 10:47 Page 73
MV H R
C O O K ER B OX
TEC H NI C A L I NF O R MATI O N
CO NSULTA NT S SP E CI FIC ATION
OPERATION
Whole home ventilation unit with heat recovery for homes without a loft.
COOKERXBOX - UNIT SPECIFICATION
The casing shall be manufactured from easy to clean pre-coated galvanised steel.
A washable flame retardant supply air filter of G3 grade shall be fitted which
may be accessed behind the grease filters. The unit shall incorporate two
backward curved centrifugal impeller fans for continuous central input and
demand activated multiple extract from ‘wet’ areas.
The fans shall be driven directly by high efficiency AC motors with a maximum
power consumption of 60 watts each.
The unit shall incorporate an easily removable, washable plate heat exchanger
manufactured in flame retardant aluminium. The heat exchanger shall be
arranged to remove heat from the extract airflow and to transfer it to the input
airflow whilst permitting no mixing.
Up to 66% of the available heat may be recovered.
The unit shall incorporate an integral grille with washable grease filters and may
be configured for general kitchen extract or for above hob application.
The unit input fan volume control setting shall be adjustable via an integral 4
position switch and shall typically provide 14-33l/s continuously with the facility
to boost, if required to 47l/s with the extract boost.
The unit extract fan shall operate continuously at a low background rate,
typically 15-37l/s, set via an integral 4 position switch, boosting to high duty
extract of approximately 47l/s when integral sensor detects available heat in the
extract air stream. Alternatively, high duty extract may be via a separate switch
(not supplied).
The standard warranty for cookerXbox shall be for 5 years.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
73
MVHR
MRXBOX95B-LP1
TECHNIC AL INFORMATION
MRXBOX95B-LP1 MECHANICAL SUPPLY & EXTRACT WITH HEAT RECOVERY
VERY LOW DEPTH CEILING VOID HEAT RECOVERY UNIT
SAP APPENDIX Q ELIGIBLE.
1
029 2085 8200
MVHR
MRXBOX95B-LP1
TECHNIC AL INFORMATION
BENEFITS
MRXBOX95B-LP1 is specifically designed for apartment applications where there are ceiling void limitations. The MVHR unit provides optimised balanced
(supply & extract) mechanical ventilation with heat recovery. Tempered air is delivered into ‘living’ areas whilst extracting moisture laden air from ‘wet’ areas,
creating comfortable well ventilated homes. The unit has a facility to commission the supply & extract fans independently on both minimum and maximum
speeds.
MEETS BUILDING REGULATIONS
IMPROVES INDOOR AIR QUALITY
SIMPLE FAN CONTROLS
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
High efficiency filters helps to create a healthy
living environment.
Independent controls for supply & extract for quick
and easy commissioning.
PROVIDES EXTRA STORAGE/CUPBOARD
SPACE
NO REQUIREMENT FOR TRICKLE VENTS
OPTIMUM PERFORMANCE
Low Specific Fan power and high efficiency results
in SAP Q.
EXTREMELY LOW NOISE LEVELS
Quiet running unit ensuring occupant acceptability.
OVERCOMES VALUABLE CUPBOARD
SPACE RESTRICTIONS
Occupant acceptability.
Reduces noise from outside - overcomes draught
issues.
LOW & EASY MAINTENANCE
5 YEAR WARRANTY
Easy accessible filters on underneath cover via
loft hatch.
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
INTEGRAL FROST PROTECTION
Protects the unit during extreme cold spells.
Mounted within ceiling void.
DISCREET RUN MONITOR
ADDED SECURITY
Windows may be kept closed.
INSTALLATION FEATURE
TYPICAL INSTALLATION
Air valve
in ceiling.
204 x 60mm
ducting in
ceiling void.
Side view of unit
mounted in the
ceiling void.
Access to second filter
Typical side view example of a unit mounted in a ceiling void using 204 x 60mm
rectangular ducting and air valves.
Download specification from www.nuaire.co.uk/specifications
Filter plate and filter
being removed
Control module
Removeable filters without removing the unit cover.
nuaire.co.uk
2
MVHR
MRXBOX95B-LP1
TECHNIC AL INFORMATION
Casing
PERFORMANCE
MRXBOX95B-LP1
550
ISO 5801 2007
AMCA 300
500
V
Type D
Air Density 1.2 kg/m3
450
Fan Static Pressure (Pa)
400
1
350
Code description
300
2
MR-XBOX95-B-LP1
|
|
| |
250
200
3
150
1
4
100
50
5
0
0
5
10.0 15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Air volume flow rate (l/s)
2
3
4
1. Multi-room supply and extract
heat recovery
2. Product range
3. Bypass
4. Low profile
MRXBOX95B-LP1
ELECTRIC AL & SOUND
Curve
1
Maximum
power consumption
(Watts)
100
2
85
3
65
4
45
5
26
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open Inlet
Open outlet
Breakout
Sound Power Levels dB re 1pW
63
125
250
50
56
55
57
67
68
64
64
63
50
52
55
56
63
65
62
62
61
45
47
48
52
57
58
57
56
54
39
42
37
46
50
49
50
49
44
36
36
26
39
43
37
42
40
33
500
55
69
62
51
65
57
44
58
49
34
49
39
24
38
27
1K
46
67
52
43
63
48
35
56
41
26
46
29
17
35
14
2K
42
65
47
39
59
43
30
53
33
19
44
19
14
28
-
4K
32
56
38
27
51
32
20
42
23
12
30
14
17
-
8K
23
48
30
17
42
20
9
32
21
10
-
dBA
@3m
43
40
33
23
12
The maximum power consumption shown above (Watts) is consumed on units running continuously, not taking into account any heat recovery saving based on SAP Appendix Q testing.
Please note step curves shown are for information purposes only and are not individual units. The units actual duty range is infinitely variable.
SAP APPENDIX Q TEST RESULTS
Exhaust terminal
Configuration
Fan speed
setting
Specific fan
power
(W/l/s)
Heat
exchange
efficiency %
Exhaust terminal
Configuration
Fan speed
setting
Specific fan
power
(W/l/s)
Heat
exchange
efficiency %
Kitchen + 1 wet room
100% variable
0.54
75
Kitchen + 5 wet rooms
100% variable
0.95
78
Kitchen + 2 wet rooms
100% variable
0.60
76
Kitchen + 6 wet rooms
100% variable
1.14
79
Kitchen + 3 wet rooms
100% variable
0.69
77
Kitchen + 4 wet rooms
100% variable
0.79
78
3
029 2085 8200
MVHR
MRXBOX95B-LP1
TECHNIC AL INFORMATION
GENERAL ARRANGEMENT MRXBOX95B-LP1
Control module
4 x Spigots for 204 x 60mm
rectangular ducting
Filter and filter plate
being removed
Second filter and filter plate
being removed
MRXBOX95B-LP1 - DIMENSIONS (mm)
View from underside with lid removed (B)
View from top with lid (A)
900
668 hole centres
371
700
885 hole centres
21.5mm condensate drain
View from control side
(A)
End view
200
67
153
740 (Filter access distance)
850
(B)
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
4
MVHR
MRXBOX95B-LP1
TECHNIC AL INFORMATION
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
Control module
The unit is supplied with a flexible cord for connection to the mains supply.
Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
LP1 - 1.3 Amp
Fuse rating:
3 Amp
NOTE: This unit must be earthed.
The three core cable from the mains power supply should be connected
to a fixed wiring installation, via a fused isolator, in accordance with
current IEE wiring regulations.
Detail of unit control on control panel.
Tamper proof label following
commissioning.
B
R
N
B
R
N
EXTRACTFAN
FAN
EXTRACT
SUPPLY FAN
B
L
U
SWL
EXTRACT
SUPPLY
B
L
U
BYPASS
BLU
WHI
YEL
RED
SUPPLY
YEL
WHI
BLU
RED
FAIL
3
Note: Wiring is for reference
purposes only as the connections
above are factory fitted.
The unit is pre-wired with a
2 metre fly lead.
2
Connection to Remote Fail
Indicator Ref: MRXBOX95LH-RFI
UNIT SERVING KITCHEN AND BATHROOM
Supply cord
from unit
MAINS
230V N
50Hz L
Fuse 2A
Light
switch
(Double
Pole)
Room
light
Blue
Brown
Black
3 Pole
isolator
Kitchen switch
UNIT SERVING KITCHEN AND TWO BATHROOMS
Green/yellow
Blue
Brown
Black
MAINS
230V N
50Hz L
Fuse 2A
Room
lights
Light
switches
(Double
Pole)
Kitchen switch
5
029 2085 8200
3 Pole
isolator
Supply cord
from unit
MVHR
MRXBOX95B-LP1
TECHNIC AL INFORMATION
CONSULTA NTS SPECIFIC ATION
OPERATION
The supply and extract ventilation unit shall be positioned as indicated on the
drawings and shall be in accordance with the particular fan schedule in the
specification.
The combined supply and extract with heat recovery unit, shall supply filtered
fresh air to each of the habitable rooms and vitiated air shall be extracted from
the wet areas e.g. bathroom, en-suite, w.c, kitchen, utility rooms, etc. The supply
air shall be pre-heated by the warm extract air via the integrated counter-flow
heat exchanger element.
The extracted air shall also be filtered before it reaches the heat exchanger block.
The ventilation unit shall vary its speed and therefore the ventilation rate, as it
receives signals from one of the following:
• Switched live signal from light / remote switches.
When signals are received, the fan shall alter its speed to adjustable, normal and
boost rates.
The unit shall have the facility to commission the supply and extract fans
independently on minimum speed (continuous background ventilation), and
boost speed, via inbuilt minimum and maximum speed adjustment. The fans
shall have infinitely variable speed control.
SPECIFICATION
The unit shall be manufactured from galvanised sheet steel with a white,
pre-painted removable access panel. The unit shall be fully insulated providing
excellent thermal and acoustic characteristics and shall be complete with a multi
plate, aluminium, counter flow high efficiency heat exchanger block, with a
thermal efficiency of up to 80%. The heat exchanger shall be protected by
G3 grade filters on fresh air inlet and system extract. The heat exchanger and
filters shall be accessible via the underside access panels, enabling quick and easy
maintenance.
The unit shall have low energy, high efficiency EC fan/motor assemblies with
sealed for life bearings, the impellers shall be backward curved centrifugal type.
The motors shall be suitable of an ambient temperature of 40°C.
Motor assemblies shall be removable from the underside of the unit and will not
require the unit to be removed from situ.
The unit shall be supplied complete with a condensate drip tray and 21.5mm
drain connection.
The unit shall be suitable for 204x60mm rectangular ducting.
The breakout noise level and power requirements shall be as detailed by the unit
manufacturer and in accordance with the ventilation equipment schedule.
Units shall be MRXBOX95B-LP1 as manufactured by Nuaire.
The unit shall be fitted with 100% summer bypass as standard.
The bypass opens automatically when outside temperature exceeds 20 Deg.C.
This shall open the damper via an actuator. Outside air supplied through the
bypass shall be filtered, so the air quality is optimal, irrespective of the bypass
setting (open or closed).
The unit shall be offered with a 5 year warranty
CONTROL OPTIONS
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer:
• Independent control of background supply and extract flow rates.
• Independent control of boost speed supply and extract flow rates.
• Integral fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
• Integral heat exchanger frost protection.
• Discreet daily run monitor.
OPTIONAL CONTROLS
The unit shall have a maximum depth of 200mm to fit within ceiling void
restrictions.
Download specification from www.nuaire.co.uk/specifications
MRXBOX95WH-RFI
230-PIR
HUMISEN
773532
Remote fail indicator.
PIR Sensor with run-on timer.
230V Humidistat.
Normal/boost switch.
nuaire.co.uk
6
MVHR
MRXBOX95-WM2
TECHNIC AL INFORMATION
MRXBOX95-WM2 MECHANIC AL VENTILATION WITH HEAT RECOVERY
UP TO 90% EFFICIENT, SAP APPENDIX Q RECOGNISED.
WALL/CUPBOAD MOUNTING DESIGN FOR MEDIUM SIZED
HOUSES & APARTMENTS.
1
029 2085 8200
MVHR
MRXBOX95-WM2
TECHNIC AL INFORMATION
BENEFITS
MRXBOX95-WM2 is designed to provide optimised balanced (supply & extract) mechanical ventilation with heat recovery. Tempered air is delivered into ‘living’
areas whilst extracting moisture laden air from ‘wet’ areas creating comfortable well ventilated homes. The unit has the facility to commission the supply &
extract fans independently on both minimum and maximum speeds. The heat exchanger block can recover up to 90% of normally wasted heat.
MEETS BUILDING REGULATIONS
ADDED SECURITY
SAP Appendix Q recognised. Part F&L - England &
Wales. Scottish technical handbook (BRE398
referenced). Technical booklet K1998.
Windows may be kept closed.
PRE-COMMISSIONING FILTER
PROTECTION
IMPROVES INDOOR AIR QUALITY
OPTIMUM PERFORMANCE
High efficiency filters helps to create a healthy
living environment.
Low Specific Fan power and high efficiency results
in SAP Q.
LOW & EASY MAINTENANCE
SUITABLE FOR MEDIUM SIZE
APPLICATIONS
Easy accessible filters from front cover – no tools
required. Filter replacement typically every 12 - 18
months.
Designed to meet the duty for average, medium
size properties.
DESCREET RUN MONITOR
Filters are covered in a removable protective film to
prevent clogged up filters prior to occupant
handover.
SIMPLE FAN CONTROLS
Independent controls for supply & extract for quick
and easy commissioning.
NO REQUIREMENT FOR TRICKLEVENTS
Reduces noise from outside - overcome draught
issues.
Records units operational time.
COMPACT
The unit fits easily into cupboards not taking up
valuable storage space.
5 YEAR WARRANTY
INTEGRAL FROST PROTECTION
Protects the unit during extreme cold spells.
5 year parts and 1 year labour warranty guarantee
reduced life costs and peace of mind.
EXTREMELY LOW NOISE LEVELS
Quiet running unit ensuring occupant acceptability.
INSTALLATION FEATURES
Filter being removed
Filter cover
Typical cupboard installation of MRXBOX95-WM2.
Download specification from www.nuaire.co.uk/specifications
Removeable filters without removing front cover.
nuaire.co.uk
2
MVHR
MRXBOX95-WM2
TECHNIC AL INFORMATION
Casing
PERFORMANCE
MRXBOX95-WM2
550
ISO 5801 2007
AMCA 300
500
V
Type D
Air Density 1.2 kg/m3
450
1
Fan Static Pressure (Pa)
400
350
Code description
300
MR-XBOX95-WM2
|
|
| |
2
250
1
200
3
4
50
3
4
1. Multi-room supply and extract
heat recovery
2. XBOX95 product range
3. Wall/cupboard application
4. Medium duty
150
100
2
5
0
0
10
20
30
40
50
60
70
80
90
100
110
120
Air volume flow rate (l/s)
MRXBOX95-WM2
ELECTRIC AL & SOUND
Curve
1
Maximum
power consumption
(Watts)
150
2
75
3
36
4
14
5
8
Sound Power Levels dB re 1pW
63
125
250
57
57
61
55
65
71
61
61
56
51
51
55
53
59
61
56
55
51
48
48
48
52
56
55
52
54
47
44
44
39
51
52
49
49
52
44
40
39
25
50
48
41
46
50
39
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open inlet
Open outlet
Breakout
Open Inlet
Open outlet
Breakout
500
56
67
53
48
58
44
42
53
39
34
48
34
22
41
27
1K
50
64
47
40
55
38
33
49
33
27
43
29
18
36
22
2K
47
60
44
35
52
35
28
45
30
21
37
25
<16
24
19
4K
36
51
35
25
39
23
18
32
<16
<16
25
<16
<16
17
<16
8K
34
43
33
20
32
17
<16
25
<16
<16
18
<16
<16
<16
<16
dBA
@3m
40
52
37
32
43
29
26
37
26
18
31
22
<16
24
18
The maximum power consumption shown above (Watts) is consumed on units running continuously, not taking into account any heat recovery saving based on SAP Appendix Q testing.
SAP APPENDIX Q TEST RESULTS
Application
Specific fan
power
(W/l/s)
Heat
exchange
efficiency %
Energy Saving Trust
Best Practice
Compliant
Application
Specific fan
power
(W/l/s)
Heat
exchange
efficiency %
Energy Saving Trust
Best Practice
Compliant
Kitchen Plus 1 wet room
0.54
89
Yes
Kitchen + 4 wet rooms
0.73
86
Yes
Kitchen Plus 2 wet rooms 0.54
87
Yes
Kitchen + 5 wet rooms
0.87
86
Yes
Kitchen Plus 3 wet rooms 0.62
87
Yes
3
029 2085 8200
MVHR
MRXBOX95-WM2
TECHNIC AL INFORMATION
GENERAL ARRANGEMENT
MRXBOX95-WM2
Mounting bracket
on wall and rear of unit.
4
1
3
2
Two removable G3 filters.
Condensate tray.
SPIGOT LOCATION &
DUCTING REFERENCES
Spigot 1.
Spigot 2.
Spigot 3.
Spigot 4.
125mm dia. = extract air from dwelling.
125mm dia. = exhaust air to outside.
125mm dia. = intake air from outside.
125mm dia. = supply air to house.
MRXBOX95-WM2 - DIMENSIONS (mm)
Mounting
bracket
Side view
View from top
419
503
172
172
90
Front view
Spigots
4 x 125mm dia.
603
Download specification from www.nuaire.co.uk/specifications
353
nuaire.co.uk
4
MVHR
MRXBOX95-WM2
TECHNIC AL INFORMATION
ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out
by a qualified electrician.
The unit is supplied with a flexible cord for connection to the mains supply.
Electrical details:240V 1ph 50Hz
Consumption:
WM2 - 1.3 Amp
Fuse rating:
3 Amp
NOTE: This unit must be earthed.
Detail of unit control on front panel.
Tamper proof label following commissioning.
The mains power supply cable should be connected to a fixed wiring
installation, via a fused isolator, in accordance with current IEE wiring
regulations.
B
L
U
Voltage:
B
R
N
B
R
N
EXTRACT FAN
SWL
EXTRACT
SUPPLY
SUPPLY FAN
B
L
U
BYPASS
BLU
WHI
YEL
RED
SUPPLY
YEL
WHI
BLU
RED
FAIL
Note: Wiring is for reference
purposes only as the connections
above are factory fitted.
The unit is pre-wired with a
2 metre fly lead.
UNIT SERVING KITCHEN AND BATHROOM
Supply cord
from unit
MAINS
230V N
50Hz L
Fuse 2A
Light
switch
(Double
Pole)
Room
light
Blue
Brown
Black
3 Pole
isolator
Kitchen switch
UNIT SERVING KITCHEN AND TWO BATHROOMS
Green/yellow
Blue
Brown
Black
MAINS
230V N
50Hz L
Fuse 2A
Room
lights
Light
switches
(Double
Pole)
Kitchen switch
5
029 2085 8200
3 Pole
isolator
Supply cord
from unit
MVHR
MRXBOX95-WM2
TECHNIC AL INFORMATION
CONSULTA NTS SPECIFIC ATION
OPERATION
The supply and extract ventilation unit shall be positioned as indicated
on the drawings and shall be in accordance with the particular fan
schedule in the specification.
The unit shall be supplied complete with a condensate drip tray
and 21.5mm drain connection.
The unit shall be suitable for 125mm diameter circular ducting.
The combined supply and extract with heat recovery unit, shall supply
filtered fresh air to each of the habitable rooms and vitiated air shall be
extracted from the wet areas e.g. bathroom, en-suite, w.c, kitchen,
utility rooms, etc. The supply air shall be pre-heated by the warm
extract air via the integrated counter-flow heat exchanger element.
The extracted air shall also be filtered before it reaches the heat
exchanger block.
The breakout noise level and power requirements shall be as
detailed by the unit manufacturer and in accordance with the
ventilation equipment schedule.
Units shall be MRXBOX95-WM2 as manufactured by Nuaire.
CONTROL OPTIONS
The ventilation unit shall vary its speed and therefore the ventilation
rate, as it receives signals from one of the following:
• Switched live signal from light / remote switches.
When signals are received, the fan shall alter its speed to adjustable,
normal and boost rates.
The unit shall have the facility to commission the supply and extract
fans independently on minimum speed (continuous background
ventilation), and boost speed, via inbuilt minimum and maximum
speed adjustment. The fans shall have infinitely variable speed
control.
All versions shall have the following functions integrally mounted
within the fan unit on a purpose made PCB, all such components
pre-wired and factory fitted by the manufacturer:
• Independent control of background supply and extract flow rates.
• Independent control of boost speed supply and extract flow rates.
• Integral fan failure indication.
• Integral S/L terminal for boost from remote switch, e.g. light switch.
• Integral heat exchanger frost protection.
• Discreet daily run monitor.
OPTIONAL CONTROLS
MRXBOX95WH-RFI Remote fail indicator.
SPECIFICATION
The unit shall be fully insulated providing excellent thermal and
acoustic characteristics and shall be complete with a multi plate
counter flow high efficiency heat exchanger block, with a thermal
efficiency of up to 90%. The heat exchanger shall be protected by
G3 grade filters on fresh air inlet and system extract.
The heat exchanger and filters shall be accessible via the front access
panel, enabling quick and easy maintenance.
The unit shall be offered with a 5 year warranty.
The manufacturer’s recommendations should be observed at all times.
The unit shall be the MRXBOX95-WM2 and shall be manufactured by Nuaire.
The unit shall have low energy, high efficiency EC fan/motor
assemblies with sealed for life bearings, the impellers shall be
backward curved centrifugal type. The motors shall be suitable of
an ambient temperature of 40°C.
Download specification from www.nuaire.co.uk/specifications
nuaire.co.uk
6