Mendota SEABROOK D-40, Инструкция по установке и эксплуатации

Страница: 17 / 44

16
GAS PRESSURE REQUIREMENTS
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. are nearly always 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 residence, which drops this pressure to 7" W.C. (1.8 KPA) (Nat. Gas). This "inches to inches" regulator is of
adequate capacity 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.
DESIRED
INLET
PRESSURE
MINIMUM
INLET
PRESSURE
MAXIMUM
INLET
PRESSURE
MANIFOLD
OUTLET
PRESSURE
AIR SHUTTER
POSITION*
NATURAL GAS 7.0" W.C.
(1.75 kPa)
5.0" W.C.
(1.12 kPa)
11" W.C.
(2.61 kPa)
3.5" W.C.
(0.87 kPa)
1/8 - 1/4 " OPEN
(7 mm)
L.P. GAS 11.0" W.C .
(2.75 kPa)
11" W.C.
(2.75 kPa)
13.0" W.C.
(3.24 kPa)
10.0" W.C.
(2.5 kPa)
½" OPEN-MIN.
(14 mm)
TURN GAS VALVE KNOB TO "HIGH" POSITION. GAS PRESSURES MAY VARY PLUS OR MINUS 5%.
*NOTE: FOR HIGH ALTITUDE (ABOVE 5.000 FEET) SOME VARIATIONS IN AIR SHUTTER SETTINGS MAY BE REQUIRED.
Manifold pressure must be taken at the MANIFOLD" tap and inlet pressure at the "SUPPLY" tap with the burner operating
by a qualified installer (see Figure 10: Pressure Test Port).
Figure 10: Pressure Test Port
GAS LEAK TEST REQUIREMENT: It is the responsibility of the installer/service person to assure
that each and every gas connection and supply tubing that are a part of this fireplace are leak proof. The
qualified/ certified individual connecting the gas supply line, performing pressure tests or performing
any service to this fireplace 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.
f i r e - p a r t s . c o m