26
26
c) Connect a manometer to the manifold (outlet) pressure tap on the gas valve (see Figures 24a and 24b).
d) Read the manifold pressure. It should be set at:
Natural Gas
LP Gas
Manifold Press. (inches w.c.)
3.5
10.0
e) If a manifold pressure adjustment is needed, make the adjustment by turning the pressure regulator (see Figures 27
and 28) screw clockwise to raise the pressure and counter clockwise to reduce the pressure. If a manifold pressure
adjustment is made, recheck the line pressure to be certain that it is still within acceptable limits. Replace the cover
screw on the regulator.
15) Test thermostat operation while the boiler is running. Turn the thermostat to the lowest setting. Both pilot burner and
main burners should stop firing. Raise the thermostat back to the highest setting. The pilot burner and main burners should
relight.
16) Verify high limit operation. Allow the boiler water temperature to increase to hi limit setting. The burners should shut
down and the circulator continue running. Both the pilot burner and main burners should stop firing.
17) Allow the boiler water temperature to drop below high limit setting.
18) The pilot burner and main burners should relight.
19) After the boiler has operated for approximately 30 minutes, check the boiler and heating system piping for leaks. Repair
any leaks found at once.
20) Inspect the vent system for flue gas leaks. Repair any leaks found before leaving the boiler in operation.
FIGURE 23a: MAIN BURNER FLAME - 1” BURNERS
FIGURE 23b: MAIN BURNER FLAME - 40mm
(“HIGH ALTITUDE”) BURNERS
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 ...