Timberwolf TB42 Serie Manuel D'installation Et D'opération page 59

12.2 venturi adjustment
This appliance has an air shutter that has been factory set open according to
the chart below:
Regardless of venturi orientation, closing the air shutter will cause a more
yellow flame, but can lead to carbonization. Opening the air shutter will cause
a more blue flame, but can cause flame lifting from the burner ports. The flame
may not appear yellow immediately; allow 15 to 30 minutes for the final flame
colour to be established.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER.
note:
It is important that the orifice is securely inserted into the venturi.
VENTURI ADJUSTMENT CHART
FUEL TOP
NG 1/16" (1.5mm)
P 3/8" (9.5mm)
12.3 flame characteristics
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.
REAR
1/8" (3.1mm)
3/8" (9.5mm)
(9.5mm - 12.7mm)
Flame must envelop
upper
3/8" to 1/2"
(12.7mm - 9.5mm) of
thermocouple
VENTURI
BURNER
SIT ELECTRONIC IGNITION
3/8" - 1/2"
(9.5mm - 12.7mm)
ORIFICE
Flame must envelop
upper
3/8" to 1/2"
(12.7mm - 9.5mm) of
Flame sensor
SIT MILLIVOLT
3/8" - 1/2"
(9.5mm - 12.7mm)
ADD IMAGE
Flame must envelop
HERE
upper
3/8" to 1/2"
(12.7mm - 9.5mm) of
thermocouple &
thermopile
36.1
MILLIVOLT
ILLUSTRATED
PSE LONG SENSOR
3/8" - 1/2"
(9.5mm - 12.7mm)
Flame must envelop
upper
3/8" to 1/2"
(12.7mm - 9.5mm) of
thermocouple
adjustments
AIR
SHUTTER
OPENING
33.1
W415-2882 / A / 12.10.20
(9
La flamm
EN
la therm
(9.5
La fl
la
(9
(
(9
La flamm
la therm
(9.5
59