Download Rinnai 37AHB SERIES Specifications

Rinnai Corporation Hydronic Furnace (37AHB) Manual
35
UNIT
SIZE
TAP 5
(L)
TAP 4
(ML)
TAP 2
(MH)
TAP 1
(H)
ECM
SPEED
TAP
EWT (OF)
160
150
140
160
150
140
160
150
140
1.5
160
150
140
130
120
AHB60 + RC80HPi(e)
2.0
130
120
AHB60 + RC80HPi(e)
2.5
130
120
AHB60 + RC80HPi(e)
3.0
130
120
AHB60 + RC80HPi(e)
SUPPORTS
COOLING CAP.
RANGE (TONS)
NET
HEATING
CAPACITY
(MBH)
NET
HEATING
CAPACITY
(MBH)
NET
HEATING
CAPACITY
(MBH)
NET
HEATING
CAPACITY
(MBH)
NOMINAL
HEATING
CAPACITY
0.1
0.2
0.3
0.5
0.6
AIRFLOW (CFM)
0.4
0.7
0.8
0.9
in. W.C.
69.1
62.6
53.8
46.5
40.3
68.0
61.5
52.9
45.7
39.6
66.6
60.3
51.8
44.8
38.8
64.3
58.1
50.0
43.2
37.4
59.6
55.1
46.8
39.7
33.3
844
63.8
58.6
49.6
41.9
35.0
971
66.9
60.5
52.1
44.5
37.9
57.2
52.9
44.9
38.1
32.0
810
61.9
56.9
48.1
40.6
34.0
942
65.7
59.4
51.2
43.7
37.3
51.8
54.9
59.0
53.3
45.9
39.2
33.4
984
57.3
51.9
44.7
38.2
32.5
53.6
49.3
41.7
35.2
29.5
817
51.5
47.3
40.0
33.8
28.3
784
49.3
45.6
38.7
32.8
27.6
698
47.0
43.4
36.9
31.2
26.3
665
44.2
40.9
34.7
29.4
24.7
626
AIRFLOW (CFM)
55.6
51.1
43.2
36.5
30.5
847
AIRFLOW (CFM)
60.9
55.1
47.4
40.5
34.5
41.0
37.9
32.2
27.3
22.9
581
49.3
45.3
38.3
32.4
27.1
751
55.6
50.3
43.4
37.0
31.5
955
61.3
55.4
47.6
41.2
35.7
37.6
34.8
29.6
25.0
21.0
533
47.0
43.2
36.5
30.8
25.8
715
54.6
49.4
42.5
36.3
31.0
937
58.2
52.6
45.2
39.1
33.9
35.6
32.9
28.0
23.7
19.9
504
44.7
41.1
34.7
29.3
24.5
680
52.9
47.8
41.2
35.2
30.0
908
53.8
48.6
41.8
36.2
31.3
32.9
30.4
25.8
21.9
18.4
466
42.2
38.8
32.8
27.7
23.1
642
40.2
36.4
31.3
26.8
22.8
690
46.6
42.2
36.3
31.4
27.2
889
1.0
24
30
TBD
24 6.
See Note
TBD
30 6.
See Note
TBD
24
See Note
6.
TBD
30
See Note
6.
TBD
See Note
20 6.
TBD
See Note
24 6.
TBD
See Note
30 6.
Minimum Legs @ Optimal Legs @ Maximum legs @
60 CFM/Leg
50 CFM/Leg
40 CFM/Leg
TBD
20
See Note
6.
Minimum Legs @ Optimal Legs @ Maximum legs @
60 CFM/Leg
50 CFM/Leg
40 CFM/Leg
TBD
20 6.
See Note
Minimum Legs @ Optimal Legs @ Maximum legs @
60 CFM/Leg
50 CFM/Leg
40 CFM/Leg
20
Minimum Legs @ Optimal Legs @ Maximum legs @
60 CFM/Leg
50 CFM/Leg
40 CFM/Leg
Number of 3" Diameter Branch Legs applicable to High
Velocity Systems Only. Used only if methods other
than Table 3 is used to determine duct sizes.
6. Number of 3” diameter legs specified in table above is for rating point only (i.e. at External Static Pressure of 0.5
in. wc. and speed TAP3, TAP1, TAP2 , TAP2 for AHB45, AHB60, AHB75, AHB90 respectively). Final leg count is
to be determined by the installing contractor and is to be based on the following formula:
NUMBER OF LEGS = TOTAL AVAILABLE CFM (AT THE SPECIFIC ESP) / DESIRED CFM per LEG (40, 50, or 60 CFM)
Example: Given the design point for AHB045 of 0.8 ESP, Low fan speed (Tap5). From table 5.0, available CFM is
569 and the desired CFM per leg is 50 CFM. Therefore, Number of Legs = 569/50 = 11.38 rounded down to 11.
47.9
40.7
34.5
29.0
734
57.8
53.1
44.9
37.9
31.7
880
62.5
56.5
48.7
41.6
35.4
50.7
43.1
36.5
30.7
777
59.8
55.0
46.5
39.3
32.8
911
64.3
58.1
50.1
42.8
36.4
62.8
56.8
48.8
42.2
36.6
AIRFLOW (CFM)
65.5
59.2
50.9
44.0
38.1
1148 1128 1103 1072 1045 1012
70.4
63.7
54.8
47.4
41.0
1343 1318 1296 1270 1248 1225 1197 1168 1109 1025
0
External Static Pressure (ESP)
TABLE 5.3: AIR DELIVERY AND PERFORMANCE DATA (BOTTOM OR SIDE RETURN w/ FACTORY SUPPLIED FILTER)
NOTES:
1. EWT - Entering Water Temperature (F).
2. CFM - Airflow in (Cubic Feet per Minute).
3. Legs - 3 inch diameter flexible ducts to diffusers.
4. 1 MBH = 1000 BTU/H.
5. Shaded box represents rating point; refer to wiring diagram for factory set speed taps.
37AHB06012KA5 + REU-KA2530FFUD(WD)-US