Goodman LPLP03 Installation Manual
LPLP03
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LOW PRESSURE PROPANE KIT
INSTALLATION INSTRUCTIONS
Description
This kit is designed for gas-fired units converted to propane
gas use. The Propane Low Pressure (LPLP03) Kit monitors
the gas line pressure with a pressure switch and disables the
unit gas valve if the line pressure drops below acceptable levels.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the
product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with
this Instruction Manual. Pay special attention to all safety
warnings. Often during installation or repair it is possible to
place yourself in a position which is more hazardous than when
the unit is in operation.
Remember, it is your responsibility to install the product safely
and to know it well enough to be able to instruct a customer in
its safe use.
Safety is a matter of common sense...a matter of thinking before
acting. Most dealers have a list of specific good safety
practices...follow them.
The precautions listed in this Installation Manual are intended
as supplemental to existing practices. However, if there is a
direct conflict between existing practices and the content of
this manual, the precautions listed here take precedence.
Fie l d Suppl ied
1 1/2" x 1-1 / 2" Nippl e
11/2" Tee
1 90 Degree S treet E l b ow
1
NOTE:
installations. See figures inside this IO for application
needs.
1/2" P i pe (length dependent on
model and applic ation)
Field supplied parts are not required for all
1 Propane Low Pressure Switch
1 1/8" Close Nipple
1 1/ 8" Te e Pi pe
1 1/2" x 1/ 8" Bushing
1 Sho r t Singl e-Stage H arness
1 Long S i ngle - Stage Harness
1 Long Jum per Wire
1 Two-Stag e Harness
1 Modulating Wire Harness
1 Propane Low Pressure Kit Label
1Wiring Diagram
1
1
IO-775C
August 2014
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
Switch to Gas Valve Piping
Low Pressure Switch Wiring
Honeywell t o White-Ro dgers
Wire Harness Ada
White-Rodgers to Honeywell
Wire Harness Adaptor
tor
Figure 1
CONTENTS
Important Information.......................................................... 2
Models Using White-Rodgers 36F & 36E
Gas V alves with 1/8” NPT
Inlet Pressure Port ............................................................. 3
White-Rodgers 36F & 36E V alves
Right Facing Gas Inlet............................................. 3
White-Rodgers 36F & 36E V alves
Left Facing Gas Inlet............................................... 4
White-Rodgers 36G/36J V alve
Right Facing Gas Inlet (Left Facing Similar) ............ 4
Honeywell VR82 and VR9205Q Valves
or VR9205R Modulating V alve on 90%+ models ..... 4
80% Models Using Honeywell VR82, VR92
or White-Rodgers 36G/36J gas valves...................... 4
Honeywell VR82 or VR92 V alve on 80% models ..... 5
LP Low Pressure Switch Wiring
(Single-Stage Models) ............................................. 5
LP Low Pressure Switch Wiring
(T wo-Stage Models White-Rodgers Gas V alve
and Wire Harness Connection) ............................... 5
LP Low Pressure Switch Wiring
(Two-S tage Models with White-Rodgers Gas Valve
with Honeywell Wire Harness Connection) .................. 6
90% Models Using Honeywell VR82, VR9205Q V alves or
VR9205R Modulating V alve or White-Rodgers 36G ..... 6
Short 90% Models Using Honeywell VR82, VR9205Q
V alves or VR9205R Modulating Valve or
White-Rodgers 36J V alve ............................................ 6
Troubleshooting.................................................................. 8
IMPORTANT INFORMA TION
This kit provides control over the unit gas valve by routing the
gas valve wiring through the supplied pressure switch. To enable proper fit-up, the pressure switch kit must be installed
before connecting the gas supply line to the gas valve. For
new unit installations, the kit hardware may be fitted to the gas
valve while the gas manifold is removed for LP gas orifice
conversion. For existing installations, the gas valve line must
be disconnected from the gas valve to allow fitting of kit hardware. Refer to Figures 2, 3, 4, 5 or 6 for a view of kit hardware
as installed in unit. Before proceeding, shut off gas supply
at manual shutoff and turn off power to unit.
Contact a local propane gas supplier
about installing a gas detecting warning device.
2
NOTE: T o ensure proper operation, install, operate and main-
tain the unit in accordance with these installation instructions, all local building codes and ordinances. In their absence, follow the latest edition of the National Fuel Gas Code
(NFPA 54/ANSI Z223.1), and/or CAN/CSA B149.1 Installation Codes.
MODELS USING WHITE-RODGERS 36F & 36E
GAS V ALVES WITH 1/8” NPT INLET
PRESSURE PORT
(Alternate method on page 4 may also be used.)
NOTE: All threaded connections must be sealed with Teflon
tape or pipe dope. Pipe sealant must be approved for use
with propane gas.
1. Remove plug from the gas valve inlet pressure tap port.
Save plug.
2. Install the supplied close nipple into the open inlet pressure tap port.
3. Thread the provided tee onto free end of the nipple. Orient
the tee as shown in figure(s).
NOTE: On some models, tee orientation depends on which
side the gas supply line enters.
4. Install pressure switch into the tee.
5. Temporarily fit a field-supplied pressure tap into the remaining leg of the tee. This pressure tap will allow gas
supply line pressure measurement during installation check
out.
6. Attach the pressure tap to a manometer or pressure measurement device before opening gas supply.
7. With gas valve and manifold installed in the unit, connect
gas supply line to the gas valve.
8. Perform installation check out procedure (piping leak check,
line pressure measurement, manifold pressure adjustment,
etc.) as outlined in the unit installation instructions.
9. Turn OFF gas supply .
10. Remove field-supplied pressure tap from tee and insert plug
removed in step 1.
1 1. Turn ON gas supply and leak check inserted plug.
12. Turn OFF power to furnace. Connect jumper harness between LPLP switch and gas valve and gas valve wiring as
indicated in Figure 7 (single-stage models) or Figures 6, 8
or 9 (two-stage models).
13. Turn ON power to furnace. V erify proper unit operation.
14. Remove backing from kit label. Fold label around jumper
harness wire to indicate kit installation.
15. Adhere kit wiring diagram adjacent to existing unit wiring
diagram.
IMPORTANT NOTE: Secure all wires to avoid their contact
with any hot surfaces or moving parts.
White-Rodgers 36F Valve
White-Rodgers 36E Valve
Right Facing Gas Inlet
Figure 2
3
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