Gas Supply Line Sizing; Gas Pressure Checking Requirements - Mendota DXV-42 Installation & Operating Instructions Manual

CORRECT GAS PRESSURE AND PROPER GAS SUPPLY LINE SIZING ARE 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 CAREFULLY CHECK FOR GAS LEAKS WHEN HOOKING UP 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.

GAS SUPPLY LINE SIZING

The Mendota Gas Fireplace comes equipped with a 3/8" N.P.T. (1.Ocm) inlet on the main gas valve. This
may be removed if a ½" flexible connector is used. Gas supply piping can enter the Fireplace cabinet from
either the left or right side.
Install an approved individual shut-off valve in supply line to the fireplace. The appliance and its individ-
ual 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).
The 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 adhere to the correct pipe sizes.
PIPE LENGTH
(FEET)
0-10
10-40
40-100
100-150
150-200
NOTE: Some areas allow 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. (See
installer should use these fittings for setting the correct gas pressure during initial installation.
NOTE:
NOTE:
NOTE: BE SURE TO INSTALL FLEX GAS HOSE WITH BRASS-TO-BRASS FITTINGS TO
NOTE: THE HARD PLUMBING FITTING IS TO BE USED WITH INSTALLATIONS
SCHEDULE 40 PIPE
INSIDE DIA.
NAT.
1/2" (1.3 cm)
1/2" (1.3 cm)
1/2" (1.3 cm)
3/4" (2.0 cm)
3/4" (2.0 cm)
DO NOT DAMAGE OR KINK THE FLEX CONNECTOR. CHECK FOR GAS LEAKS
WITH SOAP AND WATER SOLUTION.
3/8" FLEX OR RIGID PIPING MAY BE USED TO CONNECT GAS SUPPLY TO
UNIT DEPENDING ON STATE AND LOCAL CODES.
PREVENT LEAKS AT CONNECTION.
REQUIRING HARD PLUMBING. IT MAY BE REMOVED IF THE FIREPLACE IS
BEING INSTALLED WITH A FLEXIBLE CONNECTOR.
L.P.
3/8" (1.0 cm) 1/2" (1.3 cm)
1/2" (1.3 cm) 5/8" (1.6 cm)
1/2" (1.3 cm) 3/4" (2.0 cm)
1/2" (1.3 cm) 7/8" (2.3 cm)
1/2" (1.3 cm) 7/8" (2.3 cm)
6
TUBING, TYPE L
OUTSIDE DIA.
NAT. L.P.
3/8" (1.0 cm)
1/2" (1.3 cm)
1/2" (1.3 cm)
5/8" (1.6 cm)
3/4" (2.0 cm)
pg. 6) A qualified
FIGURE 2