Valor Auto Companion Inc. 739DVN - Manual (Page 17)

17
Gas Supply
Only persons licensed to work with gas piping may make the necessary gas connection to this appliance.
You are now ready to hook up the gas supply. Be sure that gas plumbing instructions and all provincial and local
codes are carefully followed. Use approved fl exible gas connections or rigid piping, depending on provincial
and local codes, to attach burner to gas supply. Be sure to use proper size gas supply line. Carefully check all
connections for gas leaks with soap and water solution.
Each installation must conform to all local, provincial and national codes. Refer to the national fuel gas code, local
zoning and code authorities for details on installation requirements.
11.1 Existing Gas Supply
Before interrupting the existing gas supply it is recommended that the following be checked:
Shut down all gas appliances and carry out a pressure test to insure there are no existing leaks on the system.
Before connecting the appliance to the gas supply line, double-check that the appliance you have purchased is designed
for the gas type you are using. The gas type markings are located on the certifi cation label and also on the appliance’s gas
valve.
Check the gas pressure to insure you will be able to supply the minimum inlet pressure for the appliance.
Check your pipe sizing to insure that suffi cient volume will be supplied to the appliance.
11.2 Gas Supply Installation
Provide adequate clearance for proper installation and checking of the gas connections.
Have your gas supplier or a qualifi ed gas fi tter run a gas supply line into the gas fi replace. The line must be properly sized
and fi tted according to the installation codes. Upstream of the appliance supply connection, the fi tter shall provide an easily
accessible manual shut-off valve.
The gas supply pipe should enter the appliance case through the opening at the rear left side. The supply pipe should be
connected to the appliance gas inlet pipe situated at the left side of the control unit. Supply line connection to the inlet pipe is
3/8 NPT.
If the circulating fan is to be installed, be aware that the supply pipe run inside the case should be at the same height as the
appliance inlet pipe in order to clear the fan. If intending to fi t an internal isolating valve, check that it will be clear of the fan.
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.
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.
11.3 Pressure Testing 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 do
so will damage the appliance’s gas valve. Such damage is not covered by the manufacturer’s warranty.
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 diagram to the right.
A built-in non-adjustable regulator controls the burner manifold pressure. The
correct pressure range is shown in the Specifi cations section of this manual.
The pressure check should be made with the burner lit. See the lighting
instructions section for full operating details.
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BE SURE TO TIGHTEN THE PRESSURE TAP SET-SCREW AFTER CHECKING THE PRESSURE.
CHECK ALL GAS CONNECTIONS FOR GAS LEAKS.