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Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 3 – OPERATION
Page
50
of
216
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0078_0M
09/11/2015
Phone: 800-526-0288
GF-128
Start Sequence
1.
The
DEMAND
LED status indicator will light.
2.
The unit checks to ensure that the
Proof of Closure
(POC) switch in the downstream
Safety Shut-Off Valve (SSOV) is closed. See Figure 3-3 for SSOV location.
Figure 3-3. SSOV Location (INN1060 Gas Train shown)
3.
With all required safety device switches closed, a purge cycle will be initiated and the
following events will occur:
(a)
The Blower relay energizes and turns on blower.
(b)
The Air/Fuel Valve rotates to the full-open purge position and closes purge
position switch. The dial on the Air/Fuel Valve (Figure 3-4) will read
100
to
indicate that it is full-open (100%).
(c)
The
VALVE POSITION
bargraph will show 100%.
Figure 3-4. Air/Fuel Valve In Purge Position
STEPPER
MOTOR
TO BLOWER
AIR IN
PURGE
VALVE
POSITION
DIAL AT 100%
GAS INLET
MANUAL
SHUTOFF
VALVE
SSOV