Benchmark 2500 - 3000 Boilers
CHAPTER 7 – MAINTENANCE
OMM-0094_0F
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
101
of
207
GF-137
Ph.: 800-526-0288
09/30/2015
LWCO Capacitor Integrity Test –
Continued
5. Confirm that the ohmmeter does NOT read a short.
NOTE
If the ohmmeter reads a short, the capacitor assembly needs to be
replaced. Refer to
document
TID-0113, provided with the 24-month
maintence kit, for LWCO replacement instructions.
6. Remove both ohmmeter probes and reconnect the Shell Harness connector to the P5
connector on the rear of the C-More controller.
7.9.2 Low Water Cutoff (LWCO) - Standard C-More Test
Perform the standard Low Water Cutoff test using the C-More controls as described below.
Standard Low Water Cutoff C-More Test
1. Turn the AC power to the unit to the
ON
position.
2. Press the
TEST
switch on the C-More controller and confirm that the blinking
Low
Water Level
message appears on the C-More display within 4 seconds.
3. Press the
RESET
key, followed by the
Clear
button, and confirm that the
Low Water
Level
message is cleared.
7.10 SHUTTING THE BOILER DOWN FOR AN EXTENDED PERIOD OF TIME
If the boiler is to be taken out of service for an extended period of time (one year or more), the
following instructions must be followed.
Shutting Boiler Down for Extended Period
1. Set ON/OFF switch on the front panel to the
OFF
position to shut down the boiler’s
operating controls.
2. Disconnect AC power from the unit.
3. Close the water supply and return valves to isolate boiler.
4. Close external gas supply valve.
5. Open relief valve to vent water pressure.
6.
Open the drain valve and drain all water from the unit.
