Specifications

3245
11
GB
PRELIMINARY BURNER ADJUSTMENTS
STANDBY WAITING FOR CALL FOR HEAT
DO NOT ADJUST THIS SETTING FOR ANY
REASON!!!
The ST0 lever is set at the factory and corresponds
to the air gate shut position of zero on the.
1
st
STAGE (LOW FIRE) AIR DAMPER SETTING
The ST1 lever controls the first stage position of the air damper and must be set at a higher degree setting than
the ST0 Lever.
Lever N5 controls the opening of the first stage gas Valve and it must be set approximately 5º lower than ST1.
(Example: if ST1 is set at 20º then N5 should be set at approximately 15º).
2
nd
STAGE (HI FIRE) AIR DAMPER SETTING
The ST2 lever controls the 2
nd
stage (Hi fire) position of the air damper and must be set at a higher degree setting
than the ST1 Lever.
Lever N3 controls the opening of the 2
nd
stage (Hi fire) gas valve and it must be set approximately 5º lower than
ST2. (Example: if ST2 is set at 30º then N3 should beset at approximately 25º).
PRESSURE WORKING CHART
The chart below shows effects of pressure in the combustion zone on the minimum/maximum burner outputs.
In this example, with a maximum operating pressure of 1.0 inches water column in the combustion zone, you will
be able to obtain a maximum of 615 KBtu/h burner output.
Any change from zero (0) pressure in the combustion zone will affect the KBtu output of the burner. To supply the
required input to the appliance, manifold pressure will have to be adjusted to compensate for this condition.
D7342
N5 N3 N4 ST0 ST1 ST2
PRESSURE WORKING CHART
Natural and Propane Gas
Pressure - In/wc
0.8
0.4
1.2
1.4
KBtu/h
kW/h
0.0
60
205
1.6
1.0
0.6
0.2
220 260180100 14040
311 472
615 751 888