Installation Instructions

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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 lev-

els.

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.

RECOGNIZE THIS SYMBOL

AS A SAFETY PRECAUTION

1 Propane Low Pressure Switch

Switch to Gas Valve Piping

1 1/8" Close Nipple

1 1/8" Tee Pipe

1 1/2" x 1/8" Bushing

Low Pressure Switch Wiring

1 Short Single-Stage Harness

1 Long Single-Stage Harness

1 Long Jumper Wire

1 Two-Stage Harness

1 Modulating Wire Harness

1 Propane Low Pressure Kit Label

1Wiring Diagram

Honeywell to White-Rodgers

Wire Harness Ada

tor

White-Rodgers to Honeywell

Wire Harness Adaptor

1 1/2" x 1-1/2" Nipple

11/2" Tee

1 90 Degree Street Elbow

1/2" Pipe (length dependent on

model and application)

NOTE:

Field supplied parts are not required for all

installations. See figures inside this IO for application

needs.

Field Supplied

Figure 1

IO-775C

August 2014

Summary of content (8 pages)

PAGE 1
LPLP03 LOW PRESSURE PROPANE KIT INSTALLATION INSTRUCTIONS Description Field Supplied 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.
PAGE 2
CONTENTS Important Information .......................................................... Models Using White-Rodgers 36F & 36E Gas Valves with 1/8” NPT Inlet Pressure Port ............................................................. White-Rodgers 36F & 36E Valves Right Facing Gas Inlet ............................................. White-Rodgers 36F & 36E Valves Left Facing Gas Inlet ............................................... White-Rodgers 36G/36J Valve Right Facing Gas Inlet (Left Facing Similar) ....
PAGE 3
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. 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.
PAGE 4
Honeywell VR82, VR9205Q Valves or VR9205R (Modulating) Valve Used on 90%+ Models White-Rodgers 36F Valve White-Rodgers 36E Valve Left Facing Gas Inlet COUNTERFLOW UPFLOW Figure 3 Figure 5 White-Rodgers 36G/36J Valve Right Facing Gas Inlet (Left Facing Similar) 80% MODELS USING HONEYWELL VR82, VR9205Q OR WHITE-RODGERS 36G/36J GAS VALVES NOTE: All threaded connections must be sealed with Teflon tape or pipe dope. Pipe sealant must be approved for use with propane gas.
PAGE 5
6. Install pressure switch in bushing. Pressure switch will be installed outside of the wrapper (see Figure 6.) Honeywell or White-Rodgers Gas Valves LP Low Pressure Switch Wiring Single-Stage Models NOTE: Ensure that the switch is upright in all applications. 7. Perform installation check out procedure (piping leak check, line pressure measurement, manifold pressure adjustment, etc.) as outlined in the unit installation instructions. Gas Valve Wiring from Furnace Wiring Harness Brown or Gray Wire 8.
PAGE 6
Honeywell Gas Valve VR9205Q With White-Rodgers Wiring Harness Connection LP Low Pressure Switch Wiring Two-Stage Models White-Rodgers Gas Valve With Honeywell Wiring Harness Connection LP Low Pressure Switch Wiring Two-Stage Models Gas Valve Wiring from Furnace Wiring Harness Gas Valve Wiring from Furnace Wiring Harness Two-Stage Jumper Harness Two-Stage Jumper Harness Kit Label LP Low Pressure Switch Kit Label LP Low Pressure Switch Figure 9 Gas Valve Honeywell Gas Valve VR9205Q And Wiring Harn
PAGE 7
SHORT 90 FURNACES USING VR82, VR92 and 36J GAS VALVES NOTE: All threaded connections must be sealed with Teflon tape or pipe dope. Pipe sealant must be approved for use with propane gas. Gas plumbed out the right side of the furnace Gas plumbed out the left side of the furnace Gas Valve Gas Valve X X Figure 13 1. Install field-supplied ½” x length required to exit wrapper, when the inlet is on left side. 2.
PAGE 8
TROUBLESHOOTING If the furnace fails to light after installation of the LP low pressure switch kit, proceed as follows: Remove jumper harness from gas valve and gas valve wiring. Reconnect furnace wiring harness to gas valve. Problem does not involve the LP low pressure switch. NO Reconnect LP low pressure switch jumper harness. Check gas supply gas valve wiring, etc. With gas supply on, measure resistance between terminals of LP low pressure switch. Are switch contacts closed? Is line pressure above 9.