User Manual

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 3 – OPERATION
OMM-0103_0A AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 51 of 178
GF-147 Phone: [phone] PRI: 10/28/2014
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: Gas Train and SSOV Location (RECON 1000 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 on the C-More controller will show 100%.
Figure 3-4: Air/Fuel Valve in Purge Position
STEPPER
MOTOR
TO
BLOWER
PURGE
VALVE POSITION
DIAL AT 100%
GAS INLET
MANUAL
SHUTOFF
VALVE
AIR IN
SSOV
TO AIR/FUEL
VALVE