HAMWORTHY HEATING LTD
25
UPTON FLOOR STANDING SERIES
500001340/C
Models
-
UF100 –UF150
4. If combustion is outside of the ranges defined below the factory sealed valves may be adjusted using
the following procedure .
Models
-
UF200– UF350
Fig 8.5.3
-
Combustion settings
Models
-
UF100 –UF150
Models
-
UF200– UF350
(Note:
readings taken with front cover removed and 155mm probe insertion CO = < 80 ppm*).
High Fire Target
Nat Gas
-
9.0% ±0.2% CO
2
LPG
-
10.55% ±0.2% CO
2
If combustion level is outside of this range use the
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 8.6.4
-
Adjusting gas valve throttle
High Fire Target
Nat Gas
-
9.0% ±0.2% CO
2
LPG
-
10.55% ±0.2% CO
2
If combustion level is outside of this range use the
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 8.6.4
-
Adjusting gas valve throttle
Low Fire Target
Nat Gas 8.4% ±0.1% CO
2
LPG
-
9.97% ±0.1% CO
2
If combustion readings are outside target range use a
screwdriver to make adjustments
To increase the CO
2
level, turn the adjustment
clockwise.
Figure 8.6.5—Adjusting gas valve offset
Low Fire Target
Nat Gas 8.4% ±0.1% CO
2
LPG
-
9.97% ±0.1% CO
2
If combustion readings are outside target range use a
screwdriver to make adjustments
To increase the CO
2
level, turn the adjustment
clockwise.
Figure 8.6.5—Adjusting gas valve offset
