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41
Diagram 11.8
SECURING
SCREWS
SUPPLY PIPE
CONNECTION
14586
GAS
ISOLATION
VALVE
Diagram 11.7
15525
Gas rate
Natural gas in (m
3
/ h)
Appliance
Maximum net heat input in kW
nominal
Combustion Products
CO
2
(Vol -%)
CO (ppm)
Appliance
Natural gas
Propane
Natural gas
Propane
Max
Min
Max
Min
Betacom 24c 8,60 ± 5 3,85 ± 5 9,60 ± 5 4,40 ± 5
< 400
< 400
Betacom 30c 8,10 ± 5 2,90 ± 5 9,30 ± 5 3,35 ± 5
< 400
< 400
tolerance
tolerance
tolerance
tolerance
Betacom 24c
Betacom 30c
28,5
25,7
3,02
2,72
11.6 Checking the gas rate
The boiler is fitted with a fully modulating automatic gas valve. With all other gas appliances turned off
measure the gas rate at the gas meter. Check that the gas rate is as stated in the table below:
Checking the combustion products
While adjusting the burner pressure at maximum and minimum, combustion products can be checked
according to the table below:
11 Commissioning
Appliance
Combustion Products
CO
2
(Vol - %)
CO (ppm)
Natural gas
tolerance
Propane
tolerance
Natural gas
tolerance
Propane
tolerance
Max
Min
Max
Min
Betacom 24c
8.60 ± 0.5
3.85 ± 0.5
9.60 ± 0.5
4.40 ± 0.5
< 400
< 400
Betacom 30c
8.10 ± 0.5
2.90 ± 0.5
9.30 ± 0.5
3.35 ± 0.5
< 400
< 400