LPLP03
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.
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RECOGNIZE THIS SYMBOL |
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AS A SAFETY PRECAUTION |
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Propane Low Pressure Switch |
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Switch to Gas Valve Piping |
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1/8" Close Nipple |
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1/8" Tee Pipe |
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1/2" x 1/8" Bushing |
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Low Pressure Switch Wiring |
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Short Single-Stage Harness |
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Long Single-Stage Harness |
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Long Jumper Wire |
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Two-Stage Harness |
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Modulating Wire Harness |
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Propane Low Pressure Kit Label |
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Wiring Diagram |
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Honeywell to White-Rodgers |
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Wire Harness Adaptor |
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White-Rodgers to Honeywell |
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Wire Harness Adaptor |
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Field Supplied |
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1/2" x 1-1/2" Nipple |
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1/2" Tee |
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90 Degree Street Elbow |
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1/2" Pipe (length dependent on |
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model and application) |
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NOTE: Field supplied parts are not required for all installations. See figures inside this IO for application needs.
Figure 1
IO-775C
August 2014
CONTENTS |
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Important Information .......................................................... |
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Models Using White-Rodgers 36F & 36E |
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Gas Valves with 1/8” NPT |
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Inlet Pressure Port ............................................................. |
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White-Rodgers 36F & 36E Valves |
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Right Facing Gas Inlet ............................................. |
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White-Rodgers 36F & 36E Valves |
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Left Facing Gas Inlet ............................................... |
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White-Rodgers 36G/36J Valve |
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Right Facing Gas Inlet (Left Facing Similar) ............ |
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Honeywell VR82 and VR9205Q Valves |
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or VR9205R Modulating Valve on 90%+ models ..... |
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80% Models Using Honeywell VR82, VR92 |
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or White-Rodgers 36G/36J gas valves ...................... |
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Honeywell VR82 or VR92 Valve on 80% models ..... |
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LP Low Pressure Switch Wiring |
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(Single-Stage Models) ............................................. |
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LP Low Pressure Switch Wiring |
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(Two-Stage Models White-Rodgers Gas Valve |
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and Wire Harness Connection) ............................... |
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LP Low Pressure Switch Wiring |
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(Two-Stage Models with White-Rodgers Gas Valve |
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with Honeywell Wire Harness Connection) .................. |
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90% Models Using Honeywell VR82, VR9205Q Valves or |
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VR9205R Modulating Valve or White-Rodgers 36G ..... |
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Short 90% Models Using Honeywell VR82, VR9205Q |
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Valves or VR9205R Modulating Valve or |
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White-Rodgers 36J Valve ............................................ |
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Troubleshooting .................................................................. |
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IMPORTANT INFORMATION
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.
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NOTE: To ensure proper operation, install, operate and maintain 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 VALVES 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.
11.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. Verify 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 |
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