Gas Valve Basic Settings - Baxi POWER HT+ Series Installation, User And Service Manual

8 Commissioning
Tab.33 Checking and setting values for gas type G20 / G25 / G25.1 / G27 / G31
Boiler model
POWER HT+ 1.130
POWER HT+ 1.150
POWER HT+ 1.200
POWER HT+ 1.250
Tab.34 Authorised CO
2
Boiler model
POWER HT+ 1.130
POWER HT+ 1.150
POWER HT+ 1.200
POWER HT+ 1.250
Tab.35 Settings values for a new gas valve
Boiler model
POWER HT+ 1.130
POWER HT+ 1.150
POWER HT+ 1.200
POWER HT+ 1.250
Fig.96 Gas valve for POWER HT+ 1.130
and POWER HT+ 1.150
72 POWER HT +
ranges at minimum output
Type G20 Type G25
8.5 +0/-0.2 8.5 +0/-0.2
8.5 +0/-0.2 8.5 +0/-0.2
9.0 +0/- 0.2 8.9 +0/-0.2
8.45 +0/- 0.2 8.9 +0/-0.2
Nominal heat input:
Number of turns for the gas flow rate set­
tings screw
4 + 1/4
4
1 + 1/4
1 + 3/8
MW-5000727-1
Type G25.1
10.0 +0/-0.2
10.0 +0/-0.2
9.3 +0/-0.3
9.3 +0/-0.3
8.4.4

Gas valve basic settings

1 Gas flow rate setting screw
The settings screw is screwed down as far as it will go and is then
unscrewed according to the number of turns given in the above
table.
2 OFFSET setting screw:
1 Remove the protective cap.
.
2 Use a Torx screwdriver (T40) or flat-head screwdriver (10 mm).
.
3 The settings screw is screwed down as far as it will go and is then
unscrewed according to the number of turns given in the above
table.
4 Refit the cap using a Torx screwdriver (T40) or flat-head
screwdriver (10 mm).
Maximum CO (ppm)
< 250
< 250
< 250
< 250
Type G27 Type G31
8.5 +0/-0.2 9.7 +0/-0.2
8.5 +0/-0.2 9.7 +0/-0.2
8.4 +0/-0.2 10.0 +0/-0.2
8.4 +0/-0.2 10.0 +0/-0.2
Minimum heat input:
Number of turns for the OFFSET set­
tings screw
2
2 + 1/2
7 + 3/4
8 + 5/8
7702630 - v02 - 11082018