Gas Pressure Requirements - Mendota DXV-60 Installation & Operating Instructions Manual

A MAJOR CAUSE OF OPERATING PROBLEMS WITH GAS APPLIANCES CAN BE IMPROPER GAS PRESSURE!
Such problems as changes in flame color or configuration, gas pilot or burner outages, intermittent operation, changes in
heat output, excessive burner noise, etc. can be the result of changes in gas pressure or improper gas pressure at the time
of the installation. The most important item to check during the installation and the first thing to check when problems
occur is gas pressure!
Gas supplies normally enter a residence at 1/2 PSI (13" - 15" W.C.) (3. KPA). A regulator is then placed inside the resi-
dence which drops this pressure to 7" W.C. (1.8 KPA) (Nat. Gas). This "inches to inches" regulator is of adequate capaci-
ty to service the gas appliances (such as dryer, furnace, etc.). If this regulator's capacity is not sufficient to add the Gas
Fireplace, an additional "inches to inches" regulator must be installed for the Fireplace. EXCEPTION: Some codes allow
2 PSI (1.4KPA) supplies to enter the residence, in which case "pounds to inches" regulators are used.
The following table provides information on correct gas pressure requirements. Be sure your gas supplier or plumber
carefully follows this table.
GAS LEAK TEST REQUIREMENT: It is the responsibility of the installer/service person to assure that each
and every gas connection and supply tubings that are a part of this fireplace are leak proof. The qualified/ certi-
fied individual connecting the gas supply line, performing pressure tests or performing any service to this fire-
place is required to perform a THOROUGH LEAK TEST on ALL gas fittings that are a part of this appliance
or the gas supply line connection using soap-water solution or a calibrated combustible gas detector. Failure to
perform this leak test may lead to a house fire and/or an explosion. Mendota is not responsible for any damages
due to an Installer's failure to conduct a leak test and verify that all connections and supply lines are leak proof.

GAS PRESSURE REQUIREMENTS

NATURAL GAS
L.P. GAS
TURN GAS VALVE KNOB TO "HIGH" POSITION. GAS PRESSURES MAY VARY PLUS OR MINUS 5%
Manifold pressure must be taken at the outlet ("MANIFOLD") tap and inlet pressure at the "INLET" tap with the
burner operating by a qualified installer (see FIGURE 2: Pressure Test Port).
GAS PRESSURE REQUIREMENTS
DESIRED MINIMUM
INLET INLET
PRESSURE PRESSURE
5.0" W.C.
7.0" W.C.
(1.75 kPa) (1.12 kPa)
11" W.C.
11.0" W.C.
(2.75 kPa) (2.75 kPa)
*AIR SHUTTER POSITION MAY VARY WITH ALTITUDEs ABOVE 5,000 FT.
FIGURE 2: Pressure Test Port
MAXIMUM MANIFOLD
INLET OUTLET
PRESSURE PRESSURE
11" W.C. 3.5" W.C.
(2.61 kPa) (0.87 kPa)
13.0" W.C. 10.0" W.C.
(3.24 kPa) (2.5 kPa)
7
AIR SHUTTER
POSITION
1/8 - 1/4 " OPEN
(7 mm)
1/2 " OPEN – min.
(14 mm)