Roberts Gorden CTCU 27 - Manual (Page 27)

SECTION 13: C ONVERSION B ETWEEN G ASES
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SECTION 13: CONVERSION BETWEEN GASES
13.1 General
Conversion between gases will require a change of
burner injectors and the gas valve re-commissioning
to the new conditions.
13.2 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 on Page 27, Section 15.2.
2. Remove the 4 screws holding the manifold and
pull out the manifold.
3. Remove inshot burners by rotating them and
sliding out the bracket.
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.
13.3 Gas Valves
All gas valves used on the CTCU 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. See Page 6, Section 4.3.
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.