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46
Boiler Manual
Elite Heating Boiler
®
Cascade Follower
Fig. 8-4
LP-293-NN Rev. 7/13/09
PART 8: FIELD WIRING
(CONTINUED)
ELITE CASCADE FOLLOWER PUMP
AND SENSOR WIRING
1.
Connect the boiler pump to the terminals
labeled BOILER HOT, BOILER NEUT, BOILER
GND.
2.
If you are using an indirect fired water tank
connected directly to the follower boiler
connect the pump for it to the DHW, HOT
DHW NEUT, and DHW GND terminals.
An alarm bell or light can be connected to the
alarm contacts of the follower boiler. The nor-
mally closed alarm contact may be used to turn
a device off if the boiler goes into lockout mode.
The alarm contacts are rated 5 amps at 120 VAC.
To connect an alarm device, connect the power
for the device to the ALARM COM terminal.
Connect the alarm device hot wire to the
ALARM NO terminal. Connect the neutral or
return of the alarm device to the neutral or
return of the power for the alarm device.
To connect a device that should be powered off
during a boiler lockout condition, follow the
same instructions as above except use the
ALARM NC terminal rather than the ALARM NO
terminal.
Note that in a cascade system the alarm output
of the boiler addressed as #1 will also be active
if the master boiler has a lockout condition. The
alarm output of boilers addressed as 2-7 will
only activate an alarm if a lockout condition
occurs on that specific boiler.
Содержание EL-110 LP
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Страница 85: ...84 MAINTENANCE NOTES ...
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Страница 88: ... 2003 2010 Heat Transfer Products Inc www HTproducts com LP 293 REV 01 06 10 ...