
Form 43343120
-28-
July 2021
12.0)
INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION
SUPPLY PRESSURE
1.
The in
staller will provide a 1/8” N.P.T. tapped plug, accessible for test gauge connection immediately
upstream of the gas supply connection to the heater.
OUTLET GAS PRESSURE CHECK AND ADJUSTMENTS
Gauges that measure pressure in pounds per square inch are not accurate enough to measure or set the
manifold pressure. All measurements MUST BE made when the heater and all other gas burning equipment that
are connectied to the gas supply system are operating at maximum capacity. The combination gas valve is
factory set and should not need adjustment. If gas pressure adjustment is required, follow the instructions:
1.
Turn off all electrical power to the system to connect manometer hoses.
2.
Turn the pressure test scr
ew (3/32” Hex) in the center of the boss
not more than one turn counterclockwise.
Attach a 5/16” hose and manometer over the tapered outlet pressure boss on the valve (
see Figures 1 and
2 below). If regulator needs to be adjusted, see instructions below.
TO ADJUST REGULATOR (single stage gas valves):
1.
Turn on power and energize the main gas valve. Remove regulator cover screw (see Figure 1 below). Turn
regulator adjustment screw clockwise
to increase presure, or counterclockwise
to decrease
pressure. Replace regulator cover screw and tighten securely.
DO NOT EXCEED THE PRESSURES SHOWN IN THE GAS PRESSURE TABLE.
2.
After testing pressure and adjusting the regulator, turn off all electrical power to the system, remove
manometer hoses, turn outlet test screw
(3/32” Hex) clockwise to seal pressure port. Tighten to 7
in lb
minimum. Turn on system power.
Содержание PGR 100-L5
Страница 47: ...Form 43343120 46 July 2021 18 0 CONTROL COMPONENT LOCATION ...
Страница 49: ...Form 43343120 48 July 2021 20 0 TROUBLESHOOTING GUIDE SINGLE STAGE N5 L5 ...
Страница 50: ...Form 43343120 July 2021 49 TROUBLESHOOTING GUIDE SINGLE STAGE CONTINUED ...
Страница 51: ...Form 43343120 50 July 2021 TROUBLESHOOTING GUIDE SINGLE STAGE CONTINUED ...
Страница 52: ...Form 43343120 July 2021 51 20 8 TROUBLESHOOTING GUIDE TWO STAGE N7 L7 ...
Страница 53: ...Form 43343120 52 July 2021 TROUBLESHOOTING GUIDE TWO STAGE CONTINUED ...
Страница 54: ...Form 43343120 July 2021 53 TROUBLESHOOTING GUIDE TWO STAGE CONTINUED ...
Страница 56: ...Form 43343120 July 2021 55 21 10 REMOVING GAS VALVE AND MANIFOLD ASSEMBLY 21 11 AIR SWITCH PRESSURE CHECK ...