Gas Conversion Guide
Table Of Contents
- GAS CONVERSION KIT INSTALLATION FOR UNIT HEATERS (MODELS UDBP AND UBX: STANDARD POWER VENT BLOWER TYPE, MODELS UDBS AND UBZ: SEPARATED-COMBUSTION BLOWER TYPE, MODELS UDAP AND UDX: STANDARD POWER VENT FAN TYPE, AND MODELS UDAS AND UDZ: SEPARATED-COMBUSTION FAN TYPE)
3
CP-UB-UD-GC (04-21) 1034364-A
Table 1. Natural Gas to Propane Conversion Kit Components
Unit
Size
Model
(Kit PN)
Component Description PN
Gas Valve
(Manufacturer’s PN)
All
Spring kit #393691 for single-stage valve VR8105, VR8205, or VR8305 98720
—
Tape Conversion 64391
Disk Propane 37752
Label*
High-elevation adjustment 197062
030,
045
UDBP, UDBS
(269840) or UBX,
UBZ (1036541R)
Spring kit #396221 for single-stage valve VR8215 260605
1/2-inch, single-stage
(VR8105K2942,
VR8205K2957, or
VR8215T1239)
Burner orifices Refer to Table 3
Plate Air restrictor, 1-3/16-inch (30 mm) diameter opening 203078
UDAP, UDAS
(269835) or UDX,
UDZ (1036536R)
Spring kit #396221 for a VR8215 single-stage valve 260605
Burner orifices Refer to Table 3
Plate Air restrictor, 1-3/8-inch (35 mm) diameter opening 196687
060,
075
UDBP, UDBS
(269841) or UBX,
UBZ (1036542R)
Spring kit
#396221 for single-stage valve VR8215 260605
1/2-inch, single-stage
(VR8105K2942,
VR8205K2957, or
VR8215T1239)
or
1/2-inch, two-stage
(VR8105N2949 or
VR8205N2921)
#396021 for two-stage valve VR8105, VR8205, or VR8305 197207
Burner orifices Refer to Table 3
Plate Air restrictor restrictor, 1-9/16-inch (40 mm) diameter opening 202051
UDAP, UDAS
(269836) or UDX,
UDZ (1036537R)
Spring kit
#396221 for a VR8215 single-stage valve 260605
#396021 for two-stage valve VR8105, VR8205, or VR8305 197207
Burner orifices Refer to Table 3
Plate Air restrictor, 1-3/4-inch (44 mm) diameter opening 196688
100,
125
UDAP, UDAS,
UDBP, UDBS,
(269837) or UBX,
UBZ, UDX, UDZ
(1036538R)
Spring kit
#396221 for single-stage valve VR8215 260605
1/2-inch, single-stage
(VR8205K2957 or
VR8215T1239)
or
1/2-inch, two-stage
(VR8205N2921)
#396021 for two-stage valve VR8105, VR8205, or VR8305 197207
Burner orifices Refer to Table 3
Plate**
Air restrictor, 1-3/4-inch (44 mm) diameter opening 196688
150,
175
UDAP, UDAS,
UDBP, UDBS,
(269838) or UBX,
UBZ, UDX, UDZ
(1036539R)
Spring kit
#396221 for single-stage valve VR8215 260605
#396021 for two-stage valve VR8105, VR8205, or VR8305 197207
Burner orifices Refer to Table 3
Plate**
Air restrictor, 1-3/4-inch (44 mm) diameter opening 196688
200,
225,
250
UDAP, UDAS,
UDBP, UDBS,
(269839) or UBX,
UBZ, UDX, UDZ
(1036540R)
Spring kit
#396221 for single-stage valve VR8215 260605
1/2-inch, single-stage
(VR8205K2957 or
VR8215T1239),
3/4-inch single-stage
(VR8305K4241),
or
1/2-inch, two-stage
(VR8205N2921 or
VR8305N4297)
#396021 for two-stage valve VR8105, VR8205, or VR8305 197207
Burner orifices Refer to Table 3
300,
350,
400
UDAP, UDAS,
UDBP, UDBS,
(201732) or UBX,
UBZ, UDX, UDZ
(1036543R)
Spring kit
#393691 for single-stage valve VR8305K 98720 3/4-inch, single-stage
(VR8305K4241)
or
3/4-inch, two-stage
(VR8305N4297)
#396021 for two-stage valve VR8105, VR8205, or VR8305 197207
Burner orifices Refer to Table 3
*Used only at installation elevations >2000 feet (>610 meters).
**The plate from kit PN 269837 is not used on unit size 125 models. The plate from kit PN 269838 is not used on unit size 175 models for
residential or commercial applications.
CONVERSION KIT SELECTION
Each conversion kit includes two or three spring kits and burner orifices for multiple unit sizes. Some parts will not
be used—carefully select the parts to be used. Refer to Table 1 for a list of natural gas to propane conversion kit
components. Refer to Table 2 for a list of propane to natural gas conversion kit components.