Download microFlex Blowdown Controller for Boilers

BB-IN: Boiler Blowdown Controller
Controls
Blowdown Valve
Inhibitor Pump
Rating –Detail
Notes
Controls: Sampling, Continuous
and Percentage Time.
Controls: Percentage Time,
Blowdown & Feed, Feed on
Volume.
Blowdown & Feed : User sets %
of Blowdown ON time used for
Inhibitor feed.
Feed cycle limit timer.
Interlock
System
Controller Configuration
Electrical
Blowdown Valve & Inhibitor Pump
OFF when Interlock contact set
opens.
Rating - Detail
User settings and configuration
written on silicon.
Rating - Detail
Requires dry contact set from
boiler controls or site DCS.
Notes
Makes current configuration
factory default.
Notes
AC Input
115 VAC, 50/60Hz,
Fusing
5 Amps @ 115VAC
5x20mm, 120VAC fusing.
Bleed solenoid relay contacts
snubbed 0.1uF, 150R
Controller electronics
transformer isolated from AC
line
Surge-Spike Suppression
Varistor on AC power input
AC Terminals
AC Input & Output :
maximum. Stranded AWG 14,
150mm2
Sensor, Digital Input
Terminals
AWG 22, 0.25 –0.50mm2
Paddlewheel Meter Power
4-20mA output loop power
14 –20 VDC, unregulated
Mechanical
Enclosure
Thermally fused @ 50mA
Rating
Non-metallic, NEMA4X,
”
5.
9W x”
5.
9Hx3.
5”
D
150mmW x150mm H x 90mm D
4-20mA output option can be
powered by load or by controller
Notes
Nominal dimensions, excluding
entry fittings and flexible
conduit.
Enclosure door hinged left.
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AQB2_User 02/06
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