Gas Supply Installation - Valor PORTRAIT 922ECN Installation & Operating Instructions Manual

• The appliance is supplied for supply gas connection
at the left hand side of the case. There is also a
gas line access at the rear of the firebox for insert
applications. The zero clearance kit does not have
access at the rear. Supply line connection to the
flexible adapter is 3/8"NPT male thread.
Alternatively, the appliance inlet pipe may be
removed and the supply line routed directly to the
control unit. An isolating valve could be fitted within
the appliance case.
• 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.
• Ensure there is a pipe union (or flare fitting where
permissible) ahead of the burner module for future
servicing. 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.
• The supply line should include a manual shut-off
valve 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 (3.5kPa).
10 10

Gas Supply Installation

• 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 (3.5kPa).
• Failure to either disconnect or isolate the appliance
during pressure testing may result in regulator or
valve damage. Consult your dealer in this case.
• The minimum supply pressure is given in
Specifications section of this manual.
• All piping and connections must be tested for leaks
after installation or servicing. All leaks must be
corrected immediately.
• When testing for leaks:
• The pressure test tapping locations are shown here.
A built-in regulator controls the burner manifold
pressure. The correct pressure range is shown in
the table in the Specifications section of this manual.
The pressure check should be made with the
burner alight and at its highest setting. See Lighting
Instructions section for full operating details.
• 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.
Manifold
Supply
pressure
pressure
test tapping
test tapping