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GAS SUPPLY REQUIREMENTS
Correct gas pressure and proper gas supply line sizing is imperative to the successful performance of your Mendota gas
fireplace. Be sure the gas supplier or plumber carefully checks for correct gas pressure and gas line sizing when installing
the fireplace.
It is critical to check for gas leaks when connecting gas line to the fireplace -- check with soap & water solution.
Be sure to install "approved" flex gas line with brass-to-brass fittings to prevent gas leaks at connections.
Gas supply piping must include a drip leg to eliminate the possibility of contaminants entering the gas train.
Adhere strictly to local and national codes for entire installation.
Correct gas pressure and proper gas supply line sizing is required.
Gas Supply Line Sizing
This Mendota Gas Fireplace comes equipped with a 1/2" N.P.T. Female inlet. Gas
supply piping can enter the Fireplace cabinet on the left or right side. Location of
gas supply entry hole on each side is the same and is shown in the image on the
right.
An approved manual shut-off ball valve or keyed valve, as required by local codes
must be installed at an accessible location. The appliance and its individual shut-
off valve must be disconnected from the gas supply piping system during any pres-
sure testing of that system at test pressures in excess of ½ PSIG (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its
manual shut-off ball 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).
A proper gas line diameter must be selected to run from the supply regulator to the
Fireplace. Refer to the following table for proper gas pipe diameters. Strictly ad-
here to the correct pipe sizes.
PIPE LENGTH
(FEET)
SCHEDULE 40 PIPE
INSIDE DIA.
TUBING, TYPE L
OUTSIDE DIA.
NAT.
L.P.
NAT.
L.P.
0-10
1/2" (1.3 cm)
3/8" (1.0 cm)
1/2" (1.3 cm)
3/8" (1.0 cm)
10-40
1/2" (1.3 cm)
1/2" (1.3 cm)
5/8" (1.6 cm)
1/2" (1.3 cm)
40-100
1/2" (1.3 cm)
1/2" (1.3 cm)
3/4" (2.0 cm)
1/2" (1.3 cm)
100-150
3/4" (2.0 cm)
1/2" (1.3 cm)
7/8" (2.3 cm)
5/8" (1.6 cm)
150-200
3/4" (2.0 cm)
1/2" (1.3 cm)
7/8" (2.3 cm)
3/4" (2.0 cm)
NOTE:
Some areas allow coated stainless steel (CSST), copper tubing or galvanized pipe - check with
local approval agencies and codes. NEVER use plastic pipe.
Gas Pressure Checking Requirements
Inlet and manifold gas pressure checking taps are located on gas valve. Perform inlet and outlet pressure tests before
completing the facing installation. Remove front access panel to gain access to the valve test ports. A qualified installer
shall take pressure measurements at these ports to verify and set the correct inlet gas pressures during initial installation.
Outlet gas pressures are factory-set and cannot be field adjusted.
NOTE
:
Check for gas leaks with soap and water solution on all factory joints and field installed joints during first firing of
this appliance.
WARNING
: Never use any type of pipe thread sealants or compounds on the seats of flare or compression connections.
ELECTRICAL INLET
GAS INLET
2 5/16
5 5/8
8 3/8
3 5/16
