Innovation Hot Water Hot Water Boiler User Manual
- INTERNATIONAL
CHAPTER 5 – SAFETY DEVICE TESTING
Page
62
of
174
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0120_0A
11/15/2016
Phone: 800-526-0288
GF-128-I
Figure 5-1. Low & High Gas Pressure Testing –800/1060 Shown
5.3 HIGH GAS PRESSURE FAULT TEST
To simulate a high gas pressure fault, refer to Figure 5-1 and proceed as follows:
High Gas Pressure Fault
1.
Remove the 1/4“ plug from the leak detection ball valve shown in Figure 5-1.
2. Install a
0 – 16” W.C. (0 – 4.0 kPa)
manometer (or W.C. gauge) where the 1/4” plug was
removed.
3.
Slowly open the leak detection ball valve
4.
Start the unit in Manual mode at a valve position (firing rate) of 25%.
5.
Slowly increase the gas pressure using the adjustment screw on the SSOV.
6.
The unit should shut down and display a
HIGH GAS PRESSURE
fault message when the
gas pressure exceeds 4.0” W.C. (1.0 kPa). The
FAULT
indicator should also start
flashing.
7.
Reduce the gas pressure back to 2.8” W.C. (697 Pa).
8.
Press the
CLEAR
button on the Control Box to clear the fault.
9.
The fault message should clear and the
FAULT
indicator should go off. The unit should
restart.
10.
Upon test completion, close the ball valve and remove the manometer. Replace the 1/4“
plug removed in step 1.
1/4" NPT PLUG
(Install manometer here for
LOW gas pressure test)
MANUAL
SHUTOFF VALVE
SSOV
TO AIR/FUEL VALVE
LOW GAS
PRESSURE
SWITCH
HIGH GAS PRESSURE
SWITCH
1/4" NPT PLUG
(Install manometer here for
HIGH gas pressure test)