Adapting To Another Gas Type - Baxi POWER HT+ Series Installation And Service Manual

Tab.25 Checking and setting values for gas type G25
Diameter of the Venturi
Diameter of the nozzles
Minimum CO
(1)
2
Maximum CO
(1)
2
Maximum CO
Tab.26 Checking and setting values for gas type G31
Diameter of the Venturi
Diameter of the nozzles
Minimum CO
(1)
2
Maximum CO
(1)
2
Maximum CO
Fig.68 Removing the connection pipe
A
2
7609474 - v02 - 04092014
U U nit POWER HT+ 1.50
mm 24
mm 4.20 (no. 2)
% 8.5
% 8.9
ppm < 250
Unit POWER HT+ 1.50
mm 24
mm 2.95 (no. 2)
% 9.5
% 10
ppm < 250
B
2
POWER HT+ 1.70
30
Variable mixer
nozzles: top part
with a diameter of
5.70 mm, bottom
part with a diame­
ter of 6.50 mm.
8.6
8.9
< 250
POWER HT+ 1.70
30
4.0 (no. 2)
9.5
10
< 250

7.4.6 Adapting to another gas type

Caution
Only a fully trained, qualified professional may carry out the follow­
ing operations.
The boiler is pre-set in the factory to run on natural gas H H (G20).
Conversion kits are available for other types of gas G G 25 and G G 31.
1. Close the mains gas valve.
2. Remove the pipe connecting the Venturi to the gas valve.
Tab.27 Connection differences
Reference
A
B
POWER HT+ 1.90 POWER HT+ 1.110
34 38
6.30 (no. 2) Variable mixer noz­
zles: top part with a
diameter of 6.80
mm, bottom part
with a diameter of
7.70 mm.
8.6 9.0
8.8 9.1
< 250 < 250
POWER HT+ 1.90 POWER HT+ 1.110
34 38
4.5 (no. 2) 5.0 (no. 2)
9.9 9.5
10 10
< 250 < 250
Model
POWER HT+ 1.50
POWER HT+ 1.70
POWER HT+ 1.90
POWER HT+ 1.110
7 Commissioning
63