Specifications

Table I - Two-Stage Kit Contents
ITEM
Installation Instructions
Propane Gas Orifice #50*
Propane Gas Orifice #51 *
Propane Gas Orifice #52*
Propane Gas Orifice #56"
Propane Gas Orifice #54*
Propane Gas Orifice #56*
Regulator Spring (92-0659)
Pressure Switch
90 ° Elbow, 1/8 in. NPT
Nipple, 1/8 in. NPT x 2 in. (51 mm)
Close Pipe Nipple, 1/8 in. NPT x 6/4 in. (19 mm)
Wire Harness
Propane Conversion Label (Rating Plate)
Propane Conversion Label (Installer Responsibility)
Propane Conversion Warning Label (Gas Valve)
Burner Insert
• Referto Table 4to determine the correct orifice to use.
PART NO. QUANTITY
ItK-CPLPCONV-15 1
LH32RF070 3
LH32RF067 3
LH32RF065 3
LH32RF060 3
LH62RF055 3
LH62RF047 3
EF39ZW026 2
HKO2LBO08 1
CAO5RAO01 2
CA01 CA010 1
CA01CAO01 2
48DU400080 1
48VL500285 1
48VL500286 1
48DU500076 1
48GS5004651 6
Firing Tube TWO-STAGE KIT INSTALLATION
NOx Baffle
Fig. 1 - Low NOx Baffle Location
A01051
FIRE, EXPLOSION, ELECTRICAL HAZARD
Failure to follow this warning could result in personal
injury, death or property damage.
Gas supply MUST be shut off before disconnecting
electrical power and proceeding with conversion.
EXPLOSION, PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal
injury or death.
This unit is designed to operate at a minimum 10.0 IN. W.C.
of manifold pressure on high stage with propane gas. Refer
to Table 4 for proper manifold pressure settings for high
stage and low stage.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing or servicing system, always turn off main
power to system and install lockout tag. There may be more
than one disconnect switch. Lock out and tag switch with a
suitable warning label.
TWO-STAGE KIT INTRODUCTION
These instructions cover the installation of a propane gas
conversion kit on models 48DT, 48DU, 48VG (208/230 VAC
models), 48VR, 48XL, 48XT, 577B, 577D, 577E (208/230 VAC
models), 677B, 677D and 677E that are equipped with a White
Rodgers 2-stage combination automatic gas valve regulator.
DESCRIPTION AND USAGE
This Two-Stage kit is applicable to units with heating inputs from
40,000 to 130,000 Btu/hr installed at high altitudes from 2001 ft
(610m) to 6000 ft (1829 m). It cannot be used for standard altitude
installation. Standard altitude conversion (0-2001 ft) (0-610 m)
must use kit CPLPCONV013A00.
1. Turn off gas supply first, then power to unit.
2. Remove the control access panel from unit.
3. Disconnect the gas pipe from the gas valve.
4. Remove the screw attaching the gas manifold to the
basepan, and partially slide out the entire burner rack
assembly from unit. Save screw. The fan partition mounting
bracket may be removed for easier access to the burner
assembly. The bracket may be removed by removing 2
screws (located on the left side of the control compartment
on the fan partition panel) and sliding the bracket forward,
bottom first. See Fig. 2.
5. Disconnect the gray, blue, brown and green/yellow wires
from the gas valve and remove violet wires from the rollout
switch.
NOTE: To locate rollout switch, see Fig. 9.
6. Disconnect orange sparker cable from the sparker.
7. Disconnect white flame sensor wire from the flame sensor.
8. Remove the ground screw securing the brown wire from the
burner assembly. Ground screw is attached to the fan parti-
tion. Save screw.