Owner`s manual

13.0 GAS SUPPLY INSTALLATION
1. The appliance is supplied for supply gas connection at the rear left corner of the case. Supply line connection to the
inlet pipe of the appliance is
3
/
8
”NPT ( female).
Alternatively, the appliance inlet pipe may be removed and the supply line routed directly to the control unit having a 3/8”
NPT female thread . Take care not to torque the valve or damage the wire connectors on the valve. An isolating valve
could be fitted within the appliance case. If the circulating fan is to be installed, be aware that the supply pipe should follow
the route of the original appliance inlet pipe in order to clear the fan. If intending to fit an internal isolating valve, check that it
will be clear of the fan.
2. Use only new black iron or steel pipes or copper tubing if acceptable - check local codes. Note that in USA copper tubing
must be internally tinned for protection against sulfur compounds.
3. Unions in gas lines should be of ground joint type.
4. The gas supply line must be sized and installed to provide a supply of gas sufficient to meet the maximum demand of
the appliance without undue loss of pressure.
5. Sealant used must be resistant to the action of all gas constituents including LP gas. Sealant should be applied lightly
to male threads to ensure excess sealant does not enter gas lines.
6. The supply line should include a manual shut-off valve and pipe union to allow the appliance to be disconnected for
servicing.
A plugged 1/8”NPT tapping must be installed in the line. The tapping must be accessible for test gauge connection and be
immediately upstream of the gas supply connection to the appliance.
7. Pressure test the supply line for leaks.
• The appliance and its individual shut-off valve must be disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in excess of ½psig (3.5kPa).
• The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off valve
during any pressure testing of the gas supply
piping system at test pressures equal to or less
than ½psig (3.5kPa).
Figure 59
• Failure to either disconnect or isolate the
appliance during pressure testing may result
in regulator or valve damage. Consult your
dealer in this case.
8. The minimum supply pressure is given in section 3
of this manual.
9. All piping and connections must be tested for leaks
after installation or servicing. All leaks must be
corrected immediately.
When testing for leaks:
• Make sure that the appliance is turned off.
• Open the manual shut-off valve.
• Test for leaks by applying a liquid detergent
or soap solution to all joints. Bubbles forming
indicate a gas leak. Never use an open flame to
check for leaks.
Correct any leak detected immediately.
10. The pressure test tapping locations are shown in figure 59. A built-in non-adjustable regulator controls the burner
manifold pressure. The correct pressure range is shown in the table in section 3 of this manual. The pressure check should
be made with the burner alight and the thermostat at its highest setting. See lighting instruction section for full operating
details.
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