Crown Boiler CWI138 Manual De Usuario

27

•

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.

26

10) Make sure vent damper is in open position when main burners are firing.
11) Inspect the main burner flames visible through the observation port in burner access panel. The flame should be stable

and mostly blue (see Figure 26). No yellow tipping should be present; however, intermittent flecks of yellow and orange in
the flame are normal.

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:

•

For standing pilot boiler models, disconnect the thermocouple from gas valve. Both pilot burner and main
burners should stop firing.

•

For intermittent ignition boiler models, with main burners firing, disconnect ignition cable from ignition module.
Both pilot burner and main burners should stop firing.

FIGURE  24:  STANDING PILOT

             BURNER FLAME

FIGURE  25:  INTERMITTENT IGNITION

              PILOT BURNER FLAME