INSTALLATION INSTRUCTIONS
(continued)
28
CONVERT BURNER ORIFICES AND PRESSURE
REGULATOR (IF NECESSARY)
1. CONVERTING BURNER ORIFICES TO
LP GAS
Tighten the orifice hoods for the surface burners
and oven burner approximately two complete
turns to the closed position and adjust top pilots,
if equipped. The gas pressure regulator must be
converted to the LP gas setting so that it will
provide a pressure of 10 inches water column to
the range manifold.
2. CONVERTING BURNER ORIFICES
TO NATURAL GAS (ONLY IF RANGE
HAS BEEN OPERATED PREVIOUSLY ON
LP GAS)
Unscrew the orifice hoods for all burners (top
and oven) approximately two complete turns,
until the flame on the burner does not increase
in length. Adjust the top pilots (if equipped). The
gas pressure regulator must be set to the natural
gas setting so that it will provide a pressure of 4
inches of water column in the range manifold.
4
3. REGULATOR CONVERSION
All ranges are equipped with a gas pressure
regulator for controlling and maintaining a
uniform gas pressure in the gas manifold of the
range. The burner orifices are sized for the gas
pressure delivered by the regulator supplied.
The pressure regulator must not be removed.
To convert the regulator from one gas to
another, refer to the following illustration
that applies:
For a Harper-Wyman
regulator, remove
converter cap by
inserting a coin
into slot in top and
twisting. Turn cap
over and re-install.
On the SCP
regulator, unscrew
the converter
using a 5/8”
wrench. Turn the
cap over and
reinstall.
NOTE: What you
read on the converter cap or plunger is the type
of gas for which the regulator is set. If yours
reads NAT, the regulator is set for natural gas. If
yours reads LP, the regulator is set for LP.
• FOR PROPER OPERATION, THE MAXIMUM
INLET PRESSURE TO THE REGULATOR
MUST BE NO MORE THAN 14 INCHES OF
WATER COLUMN PRESSURE. For checking
the regulator, the inlet pressure must be at least
1-inch of water column (3.4 KPA) greater than
the regulator output setting. If the regulator is
set for 4 inches of water column pressure, the
inlet pressure must be at least 5 inches. If the
regulator is set for 10 inches, the inlet pressure
must be at least 11 inches.
• The gas supply line to the range should be 1/2
inch or 3/4 inch pipe.
For standing pilot models, make the necessary
oven pilot adjustment (see directions in STEP 7).
Also burner air shutter adjustments may be
necessary on all models to complete conversion
(see STEP 11).
LP GAS SETTING
NAT. GAS SETTING
LPG
LPG
NAT
NAT
Harper-Wyman
Regulator
SCP
Regulator
Converter
Cap
Summary of Contents for JGAS24
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