Adapting The Boiler To A Different Type Of Gas - Potterton SIRIUS THREE FS 70 Installation Manual

8 Commissioning
Tab.43 Authorised CO
2
Unit
%
%
%
%
%
%
%
%
%
%
%
(1) The CO value is valid with the front panel mounted. If the front panel is removed (open chamber), the value readout is lower by 0.2 %.
2
(2) Nominal value.
Tab.44 Authorised CO
2
110
Unit
%
%
%
%
%
%
%
%
%
%
%
(1) The CO value is valid with the front panel mounted. If the front panel is removed (open chamber), the value readout is lower by 0.2 %.
2
(2) Nominal value.
68
ranges for G31 type gas for SIRIUS THREE FS 90
CO at maximum power
(1)
2
9.5
9.6
9.7
9.8
9.9
10.0
(2)
10.1
10.2
10.3
10.4
10.5
ranges for G31 type gas for SIRIUS THREE FS 50 , SIRIUS THREE FS 70 and SIRIUS THREE FS
CO at maximum power
(1)
2
9.5
9.6
9.7
9.8
9.9
10.0
(2)
10.1
10.2
10.3
10.4
10.5
Authorised CO
9.0 - 9.4
9.1 - 9.5
9.2 - 9.6
9.3 - 9.7
9.4 - 9.8
9.5 - 9.9
9.6 - 10.0
9.7 - 10.1
9.8 - 10.2
9.9 - 10.3
10 - 10.4
Authorised CO
8.8 - 9.2
8.9 - 9.3
9.0 - 9.4
9.1 - 9.5
9.2 - 9.6
9.3 - 9.7
9.4 - 9.8
9.5 - 9.9
9.6 - 10.0
9.7 - 10.1
9.8 - 10.2
Important
The amount of CO
2
amount of CO measured at maximum power. In accordance with
2
the new standard EN15502 for gas boilers, the settings ranges for
CO at minimum power are indicated for each CO
2
measured at maximum power.
8.4.6

Adapting the boiler to a different type of gas

Caution
Only a fully trained, qualified professional may carry out the
following operations.
The boiler is pre-set in the factory to run on natural gas H (G20).
Conversion kits are available for other types of gas G25 and G31.
1. Close the mains gas valve.
range at minimum power
2
range at minimum power
2
permitted at minimum power depends on the
7609493 - v11 - 18052020
(1)
(1)
value
2