Roberts Gorden CTCU 32 Manual Do Utilizador

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COMBAT
®
 CTCU U
NIT
 H
EATERS
 I
NSTALLATION
 O
PERATION
 
AND
 S
ERVICE
 M
ANUAL
30 of 42
SECTION 14: CONVERSION BETWEEN GASES
14.1 General
Conversion between gases will require a change of 
burner injectors and the gas valve re-commissioning 
to the new conditions.
14.2 Burner Conversion
Conversion of the burner assembly from one gas to 
the other is the same for all types of heaters.
1. Remove the burner compartment cover as 
shown 
2. Remove the connection between the gas valve 
outlet and the manifold. 
16.1 for gas valve removal.
3. Remove the manifold from the burner assembly 
by removing the screws at the top and bottom. 
See Page 37, Section 16.2.1.
4. Remove the main burner injectors.
5. Replace with the injectors for the new gas 
ensuring a gas tight seal.
6. Refit all components in reverse order.
14.3 Gas Valves
All gas valves used on the unit have pressure 
regulators that may be set to operate on natural gas 
or LPG.
Conversion is carried out by re-setting the burner 
pressure to the value in the data table during 
commissioning. 
Ensure that the gas inlet pressure to the heater is 
correct for the new gas, and that the gas supply has 
been purged of the old gas.