Hamworthy F100W, Installation, Commissioning And Operating Instructions

Page: 31 / 82

HAMWORTHY HEATING LTD
25
FLEET W series 500001211/F
High Fire Target Nat Gas - 9.0% ±0.25% CO
2
If combustion level is outside of this range use the
Cross Head Throttle Screw to adjust the mixture.
T
HIS SETTING MUST BE CORRECT BEFORE CONTINUING
To increase the CO
2
level, turn the adjustment
anti-clockwise.
Figure 7.6.1- Adjusting gas valve throttle
Low Fire Target Nat Gas 9.0% ±0.25% CO
2
If combustion readings are outside target range use
Torx Bit to make adjustments
To increase the CO
2
level, turn the adjustment
clockwise.
Figure 7.6.3 - Adjusting gas valve offset
Models - F40W/ F50W/ F60W & F70W
Models - F85W/ F100W/ F125W & F150W
4. If combustion is outside of the ranges defined below the factory sealed valves may be adjusted using
the following procedure .
High Fire Target Nat Gas 9.0% ±0.25% CO
2
If combustion level is outside of this range use the
Cross Head Throttle Screw to adjust the mixture.
T
HIS SETTING MUST BE CORRECT BEFORE CONTINUING
To increase the CO
2
level, turn the adjustment
anti-clockwise.
Figure 7.6.2 - Adjusting gas valve throttle
Low Fire Target Nat Gas 9.0% ±0.25% CO
2
If combustion readings are outside target range use
Torx Bit to make adjustments
To increase the CO
2
level, turn the adjustment
clockwise.
Figure 7.6.4 - Adjusting gas valve offset
Models - F40W/ F50W/ F60W & F70W
Models - F85W/ F100W/ F125W & F150W