37 06/218390-017A
1. Install a vacuum “TEE” between the vacuum switch and
drop tube.
2. Install the vacuum gauge to the “TEE”.
3. Turn thermostat on or dial control. ***NOTE: make
sure fuel is in the hopper as this can eect the vacuum
reading. It takes a minimum of .04 inches of water
column to close the vacuum switch.****
4. Your vacuum gauge should be reading between .19 to
.30 inches of water column while the exhaust blower is
running on HIGH. (on a cold appliance & NO Fire).
ALL VACUUM READINGS ARE MEASURED IN INCHES
OF WATER COLUMN. LONG VERTICAL VENT RUNS
WILL PRODUCE GREATER VACUUM COMPARED TO
HORIZONTAL RUNS.
FIREBOX VACUUM & VACUUM SWITCH TROUBLESHOOTING
NOTE:
Low vacuum can be the result of a leaking door gasket,
repot not closing all of the way, dirty heat exchanger, or
plugged vent system.
Always make sure the appliance is clean before making
any repairs.
(VACUUM GAUGE)
RED = LOW VACUUM
GREEN = OPERATING RANGE
BLUE = SHUTDOWN
VACUUM “TEE”VACUUM “TEE”
VACUUM SWITCHVACUUM SWITCH
To Next Page
Loading...
