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WARNING
If the readings obtained are lower or higher than the combustion readings in Table 17, use a T40 Torx key to
adjust the offset screw in a clockwise (positive) or counterclockwise (negative) direction (approximately 1/4
turn). See Figure 19. Check your combustion values. Repeat this procedure until the values obtained on the
combustion analyzer agree with those stated in Table 16.
NOTE: If the appliance makes a whistling sound (harmonics) at low fire, adjust the offset screw in a
clock- wise (positive) direction (approximately 1/8 turn). Check your combustion values and ensure they
agree with those stated in Table 16 before proceeding.
WARNING
Analyzer and set the throttle within the recommended CO measurements could result in property dam-
age, severe personal injury, or death.
NATURAL GAS
FAN SPEED
LOW
CO PPM
≤60
CO2 (%)
8 - 10
Table 16 – Combustion Settings
1. When low fire settings have been obtained, flip DIP switch seven (7) to its original (OFF) position. This will
return the appliance to normal mode.
2. Flip DIP switch six (6) to ON (high fire). Again check combustion readings with a combustion analyzer.
3. When complete, flip DIP switch six (6) to its original (OFF) position. This will return the appliance to nor-
mal mode.
4. Allow appliance to operate normally. Ensure it is operating properly.
5. Reinstall the appliance front cover.
It is required to use a combustion analyzer to verify final adjustment according to
the combustion chart (Table 16). Failure to do so could result in serious personal
injury or death.
It is very important that this conversion be set within the recommended CO
measurements listed in Table 16. Visually looking at the burner does not deter-
mine combustion quality. Failure to measure combustion with a Combustion
COMBUSTION SETTINGS
HIGH
LOW
≤200
≤60
8 ½ - 10 ½
9 – 10 ½
LP GAS
HIGH
≤200
9 ½ - 10 ½
Figure 18 – Gas Valve Offset Screw
37
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