Operating instructions

21
Connector
Pipes
Unions
Supply Line
Size
Sealant
Manual Shut-off
Valve & Union
Test Pressures
>1/2 psig
(3.5kPa)
Possible
Damages
Test Pressures
≤1/2 psig
(3.5kPa)
Minimum
Pressure
Leak Test
Mandatory
Leak test
procedure
Test Tapping
Location
Supply Gas Installation
• The gas supply inlet connection is a 3/8 inch NPT female connector. For detailed
location of this connector see the drawing on page 7. If a circulating fan or isolating
valve is to be installed, adjust the routing of the gas line to suit.
• 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.
• Unions in gas lines should be of ground joint type.
• The gas supply line must be sized and installed to provide a supply of gas suffi cient to
meet the maximum demand of the appliance without undue loss of pressure.
• 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.
• The supply line should include a manual shut-off valve and union to allow the
appliance to be disconnected for servicing.
• 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 1/2 psig (3.5 kPa).
• 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 1/2 psig (3.5 kPa).
• Failure to either disconnect or isolate the appliance during pressure testing may result
in regulator or valve damages and void the warranty. Consult your dealer in case of
damages.
• The minimum supply pressure is
given in the Specifi cations section
of this manual—page 7.
• 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 fl ame to check for leaks.
Correct any leak detected immediately.
• The pressure test tapping locations are shown in the fi gure above. A built-in non-
adjustable regulator controls the burner manifold pressure. The correct pressure range
is shown in the table in Specifi cations section of this manual on page 7. The pressure
check should be made with the burner alight and at its highest setting. See Lighting
Instructions section on page 33 for full operating details.