High Gas Pressure Fault Test - Watts Aerco Innovation 800 User Manual

Innovation Hot Water Hot Water Boiler User Manual
HIGH GAS PRESSURE
SWITCH
1/4" NPT PLUG
(Install manometer here for
HIGH gas pressure test)
MANUAL
SHUTOFF VALVE
TO AIR/FUEL VALVE
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:
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.
Page 62 of 174
11/15/2016
CHAPTER 5 – SAFETY DEVICE TESTING
SSOV
High Gas Pressure Fault
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
- INTERNATIONAL
LOW GAS
PRESSURE
SWITCH
1/4" NPT PLUG
(Install manometer here for
LOW gas pressure test)
OMM-0120_0A
GF-128-I