beautypg.com

3 high gas pressure fault test – AERCO Innovation (G-13-1854 and above) User Manual

Page 62

background image

Innovation Water Heaters Installation, Operation & Maintenance Manual

CHAPTER 5 – MODE OF OPERATION

Page 62 of

196

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913

OMM-0078_0J

PRI: 11/22/2013

Phone: 800-526-0288

GF-128

Low Gas Pressure Fault Test – Continued

9. Upon test completion, close the ball valve and remove the manometer. Replace the 1/8“

plug removed in step 1.

Figure 5-1. Low & High Gas Pressure Testing (INN1060 Gas Train)

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 1/8“ plug from the leak detection ball valve shown in Figure 5-1.

2. Install a 0 – 16” W.C. manometer (or W.C. gauge) where the 1/8” 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. The FAULT indicator should also start flashing.

7. Reduce the gas pressure back to 2.8” W.C.

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 1/8“

plug removed in step 1.

MANUAL

SHUTOFF

VALVE

SSOV

1/4" NPT PLUG

(Install manometer here for

HIGH gas pressure test)

LEAK

DETECTION

BALL VALVE

TO AIR/FUEL
VALVE

LOW GAS
PRESSURE
SWITCH

HIGH GAS
PRESSURE
SWITCH

1/4" NPT PLUG

(Install manometer here for

LOW gas pressure test)