25
25
WARNING
•
NEVER USE A FLAME TO CHECK FOR GAS LEAKS.
•
MAKE SURE THAT THE AREA AROUND THE BOILER IS CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE, AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
•
DAMPER MUST BE IN OPEN POSITION WHEN APPLIANCE MAIN BURNER IS OPERATING.
12) Check entire gas train for leaks using soap and water or other approved leak detection method while boiler is firing. Fix
any leaks found immediately.
13) Run gas valve safety shutdown test. With main burners firing, disconnect ignition cable from ignition module.
Both pilot burner and main burners should stop firing.
14) Check the manifold pressure and adjust if necessary. To do this, use the following procedure:
a) Connect a manometer to the inlet pressure tap on the gas valve (see Figures 24a and 24b).
b) Check the inlet pressure with all gas appliances on and off. The inlet pressure at the boiler must be within the
following limits regardless of what combination of appliances is firing:
Inlet Press (inches w.c.)
Natural Gas
LP Gas
Min.
5.0
11.0
Max.
14.0
13.0
If the inlet pressure falls outside of these limits, find and correct the cause of the problem before proceeding further.
FIGURE 22: INTERMITTENT IGNITION
PILOT BURNER FLAME
WARNING
FAILURE TO FOLLOW THE FOLLOWING PROCEDURE EXACTLY COULD RESULT IN OVER-FIRING
OF THE BOILER AND A CARBON MONOXIDE HAZARD.
Содержание CWI103
Страница 2: ......
Страница 17: ...15 15 FIGURE 12 INDIRECT WATER HEATER BOILER SIDE PIPING FIGURE 11 STANDARD BOILER PIPING ...
Страница 19: ...17 17 FIGURE 15 BOILER PIPING WITH CHILLER FIGURE 14 ISOLATION OF BOILER FROM SYSTEM WITH A HEAT EXCHANGER ...
Страница 29: ...27 27 FIGURE 24a GAS VALVE DETAIL HONEYWELL VR8204 AND VR8304 FIGURE 24b GAS VALVE DETAIL ROBERTSHAW 7000DERHC ...
Страница 34: ...32 32 Notes ...
Страница 41: ...39 39 Notes ...
Страница 43: ...41 41 ...
Страница 45: ...43 43 ...
Страница 47: ...45 45 ...
Страница 49: ...47 47 FIGURE A1 BASE HEAT EXCHANGER FLUE COLLECTOR ASSEMBLY ...
Страница 51: ...49 49 FIGURE A2 JACKET INSTALLATION ...
Страница 53: ...51 51 FIGURE A3 TAPPING LOCATIONS SEE TEXT FOR TAPPING USES ...
Страница 54: ...52 52 Notes ...
Страница 55: ...53 53 Notes ...