Supply Gas Installation - Valor Legend G4 780IN Installation & Operating Instructions Manual

The gas supply inlet connection is a 1/2" NPT female.
Gas shut-off valve supplied on the end of stainless
steel flexible connector. Flex connector is located on
the left hand rear corner of the appliance.
X
X
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.
The burner module and gas train on this appliance
may be removed as a unit for servicing. The flex pipe
supplied with the unit provides a union for removal of
the module.
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 sufficient 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.
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 equipment shut-off valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psi
(3.5 kPa).
Failure to either disconnect or isolate the appliance
during pressure testing may resulting regulator or
valve damages and void the warranty. Consult your
dealer in case of damages.
14

Supply Gas Installation

Pressure Test Points
The minimum supply pressure is given in the
subsection Ratings of this manual—page 5.
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.
The pressure test
tapping locations is
shown in the figure
below. An internal
regulator within the
valve controls the
burner manifold
pressure.
The correct pressure
range is shown in the
table in subsection
Ratings of this manual
on page 5. The
pressure check should
be made with the
burner alight and at its
highest setting. See
Lighting Instructions
section for full operating
details on page 33.
Manifold Test
Pressure
Valve Inlet
Pressure
Pressure Testing
1/2" NPT
female
Shut-off valve
supplied with
appliance
34" (864 mm)
flex pipe
supplied with
appliance
Control
Valve
Manifold
Pressure
Adjustment
behind
Plastic Cap
Valve Assembly