U.S. Boiler Company SERIES 3, Инструкция по установке, эксплуатации и обслуживанию

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APPENDIX F – ADjUSTING GAS INPUT RATE
Check Manifold Pressure:
1.
Note the rated manifold gas pressure listed
on the boiler’s rating label.
2.
Connect Manometer to manifold pressure
tapping on Gas Valve (Figure F-1).
3.
Light main burners by adjusting thermostat
to highest setting.
4.
Gas valve has step-opening regulator,
which initially opens at a lower manifold
pressure and then steps to full pressure after
approximately 30 seconds. Check manifold
pressure after step has occurred.
5.
If required, adjust gas manifold pressure to
the rated setting by turning the gas valves
adjustment screw clockwise to increase
manifold pressure or counterclockwise to
decrease manifold pressure (Figure F-2).
Several turns may be required.
Do not force the adjustment screw.
DO NOT EXCEED the boiler’s rated gas
input.
6.
Recheck Main Burner Flame.
Leak Test Gas Piping:
THE BOILER AND ITS GAS
CONNECTIONS must be leak tested and
leak free before placing boiler in operation.
FOR LEAK TESTING OVER ½ PSIG,
disconnect boiler and its individual shut-off
valve from gas supply piping.
1.
For testing at ½ psig or less, isolate boiler
from gas supply piping by closing boiler’s
individual manual shut-off valve.
2.
Check for gas leaks in all piping joints,
valves, and fittings using a non-corrosive
leak detection solution or an electronic leak
detector.
3.
Repair any leaks.
F-1
F-2