W415-1345 / D / 05.01.17
EN
44
adjustment
VENTURI
These settings are for rear vented (maximum) horizontal termination. Adjustment may be required depending on
fuel type, vent confi guration and altitude.
To access the air shutter, remove the two screws that secure the cover to the air housing, taking care not to
damage the gasket.
FUEL
AIR SHUTTER ADJUSTMENT
NG
1/16" (1.5mm)
P
1/4" (6.4mm)
It’s important to periodically perform a visual check of
the pilot and burner flames. Compare them to the
illustration provided. If any flames appear abnormal,
call a service person.
ADD IMAGE
HERE
11.3 fl ame characteristics
MILLIVOLT
ILLUSTRATED
3/8” - 1/2”
FLAME MUST
ENVELOP UPPER
3/8" TO 1/2"
(12.7mm - 9.5mm) OF
THERMOCOUPLE &
THERMOPILE
(9.5mm - 12.7mm)