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INSTALLATION INSTRUCTIONS
RC231002 Rev. 3 20
After the oven has cycled for 25 to 30 minutes, note the
temperature that the oven cycles ON and OFF. For
example, at 350° setting the oven cycles between 335° and
355°. This provides a mean or average temperature of
345°F., well within the ±25°F specification.
GAS PRESSURE
Correct ignition and operation of the burners are dependent
upon adequate gas pressure. The regulator is designed to
provide pressure of approximately six (6) inches water
column pressure (WCP) for natural gas and approximately
eleven (11) inches for WCP for liquid propane (LP) gas,
provided the universal type gas regulator and gas valves
have been correctly set up for the type gas employed.
These pressures therefore require that the minimum supply
pressure to the regulator must be at least six (6) inches
WCP for natural gas and eleven (11) inches WCP for LP
gas, with maximum pressure not to exceed fourteen (14)
inches WCP.
MEASURING GAS PRESSURE
Equipment for measurement of gas pressure varies from
pressure meters and gauges to the relatively simply and
most commonly used manometer. If it is used, follow the
directions supplied with the unit. The following informations
covers the use of a manometer.
A manometer is simply a U-shaped tube of clear plastic or
glass (see illustration). A scale in inches is located between
the two (2) legs of the "U". In use, the tube is filled with
sufficient water to achieve a level at "0" inches. One end
of the tube is connected to the range manifold or gas valve
orifice while the other end of the tube or leg is open. When
gas pressure is applied, the water on the gas side of the tube
is pushed down and the water in the other leg rises up
against the atmospheric pressure on the open end. The
sum of the readings below the zero level and above the
level will provide the gas pressure in inches water column,
or the water column height which the gas pressure will
support against the atmospheric pressure on top of the
water column. The manometer therefore indicates gas
pressure in inches water column. This conforms with the
gas specifications for gas appliances which are given as
inches WCP or inches water column pressure.
USING THE MANOMETER
The usual procedure for taking the pressure reading is to
connect the tubing to one of the gas valve orifice hoods and
turn on the valve. A full load reading should be taken by
turning on all of the top burners and the oven burner to
assure that the pressure under a full load is adequate.
Figure 33 shows four (4) inches water column pressure
(WCP), two (2) inches above and two (2) inches below the
zero level.
Figure 33 - The Mannometer