17. Pressure Testing
The maximum gas supply pressure for the regulator supplied on this appliance is
14" W.C, The test pressure for checking this regulator must be at least 6" W.C. for
natural gas, and at least 11" W.C. for LP. It isshipped from the factory set for natural
gas at 5" W.C.
This appliance and its individual shutoff 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 k Pa).
This appliance must be isolated from the gas supply piping system by closing its
individual manual shutoff valve during any pressure testing ofthe gas supplypiping
system at test pressures equal to or less than 1/2 PSIG (3.5 k Pa).
Appliance Pressure Regulator Conversion:
(see illustration "A")
Follow the instructions below to convert the regulator for use with LP gas. (This
appliance is shipped from the factory adjusted for use with natural gas.)
1, Unscrew the hex shaped cap from the neck of the regulator, (A wrench may be
required to loosen the cap.)
2. Within the cap is a plastic pin. Remove this pin from the cap by applying sideward
pressure to the pin, (See illustration,)
3. Invert the pin and snap it back into place within the cap by applying even finger
pressure at opposing edges of the pin's circular disc, The pin must be seated firmly
and squarely in the cap.
.Pin replacement may be most easily accomplished by placing the cap on aflat
horizontal surface, as shown in the illustration, and applying downward finger
pressure at the edges of the pin's disc.
4. Screw the cap securely back into place in the neck of the pressure regulator. (The
cap need not be wrench-tightened upon replacement. Firm finger tightening wilt
secure the cap.)
Appliance Pressure Regulator Conversion:
(see illustration "A")
To convert regulator to LP insert acoininto the slot inthe cap of the regulator and turn
counterclockwise to loosen. Reverse (invert) cap, push down and turn clockwiseto lock
in place. When finished, the marking"LP" should be visible inthe center well of the cap.
18. Conversion to LP Gas
This appliance is shipped from the factory equipped for use with natural gas. To
convert it from natural gas for use with LP gas, perform steps 1 through 4.
1, Remove natural gas orifice hoods. Remove LP orifice, (if so equipped) in tube
assemblies. Install color coded orifice hoods supplied.
(SEE LP GAS CONVERSION INSTRUCTIONS PAGE 7.)
2. Invert cap in convertible pressure regulator (if so equipped) located at entrance
to gas manifold.
3. Adjust air shutters on individual burners for proper flame appearance,
4. Adjust low flame setting at each burner by turning adjustment screw in center of
valve stem.
To make these conversion adjustments follow the instructions and
illustrations ("A" through "E").
This appliance is shipped from the factory with orifice hoods drilled for use with natural
gas. To convert from natural gas to LP, apply a 1/2" open-ended wrench to hex section
of orifice hood. TURN COUNTERCLOCKWISE TO REMOVE. Save the Natural Gas
orifice hoods just removed from this appliance for future use. Install color coded orifice
hoods supplied. (SEE GAS CONVERSION INSTRUCTIONS PAGE 7.) TURN
CLOCKWISE TO INSTALL. Hold dimension specified in illustration "B",
MAXITROL REGULATOR _Y=_A_
Rk_ERPRE_URE
B'DI_ B6EST0
C j_. LP APP...Y_Fdr¢;i_Mtf_IE RI_i,,AC_ INC_.
,
I_AHDPiN J _T lu,
ILLUSTRATION "A"
HARPER-WYMAN REGULATOR
The reversible cap is
labeled either"LP" or
"NAT" and is easiIy
recognized by the
raised center coin
slot (for Natural) or
the center well (for
LP).
ALTERNATE ILLUSTRATION "A"
1/2" OPEN END
WRENCH
TURN CLOCKWISE
TURN TO TIGHTEN
TO REMOVE ORIFICE HOOD
ILLUSTRATION "B"
TUBE ASSEMBLY
,._, ,j_,,-'- TUBE ASSEMBLY
OR,ROE
_._ _,,,--HOOD
DISCARDAND USE'--'--_
ORIFICE HOOD
FOR
SPECIFIED GAS.
5
