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AM Series Boilers and Water Heaters
CHAPTER 8 – UNIT START-UP
OMM-0100_0D
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
89
of
154
GF-146
Ph.: 800-526-0288
03/28/16
Gas Supply Pressure Test
- Continued
8. Generate a heat demand as follows, for appropriate type (boiler or water heater):
•
BOILER or WATER HEATER:
by pressing button
to its maximum setting.
•
INDIRECT WATER HEATER:
by pressing button
to its maximum setting.
9. Gain access to the installer menu (See Section 9.16) and set parameter 2200 to HIGH. Now
the unit will run for 20 minutes at maximum input.
10. Check the manometer to make sure the gas supply pressure does not drop below 3” W.C.
(7.6 mbar). If the gas supply pressure is lower than 3” W.C. it means that your inlet gas line
or your gas pressure regulator is not correctly sized.
CAUTION!
DO NOT adjust the screw “F” (Figure 8-2). This screw is factory-
set for the correct gas flow and outlet pressure. Attempting to alter
the gas valve setting could result in damage to the valve, causing
potential severe personal injury, death, or substantial property
damage.
11. After verifying the correct gas pressures:
a) Return to parameter 2200 and set to OFF.
b) Close the manual gas shut-off valve (Figure 7-1).
c) Disconnect the manometer.
d) Turn the screw in pressure connection “D” in Figure 8-2, clockwise until snug.
e) Check pressure port “D” (Figure 8-2) for any gas leaks.