Revision: CP-UB-UD-GC (04-21) 1034364-A
Revision: CP-UB-UD-GC (02-21) 1034364-0
1036538R Gas Conversion Kit
Instruction Manual

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
MODELS UDAS AND UDZ: SEPARATED-COMBUSTION FAN TYPE

GENERAL INFORMATION

These gas conversion kits are for standard power vents or separated-combustion heaters equipped with either a single-stage or two-stage gas valve.
Model Identification
When converting fuels, it is necessary to have the complete heater model. The identifying model number can be found on the heater rating plate. The rating plate identifies only original equipment so also compare the label on the gas valve with the description listed.

DANGER

FIRE OR EXPLOSION HAZARD

• Failure to follow safety warnings exactly could result in serious injury, death, or property damage.
• Improper installation, adjustment, alteration, service, or maintenance can cause serious injury, death, or property damage.
• Installation and service must be performed by a qualified installer, service agency, or gas supplier.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.

DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IT IN A SAFE PLACE FOR FUTURE REFERENCE.

GENERAL INFORMATION—CONTINUED

Important Safety Information

Please read all information in this manual thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. Pay attention to all dangers, warnings, cautions, and notes highlighted in this manual. Safety markings should not be ignored and are used frequently throughout to designate a degree or level of seriousness.
DANGER : A danger statement describes a potentially hazardous situation that if not avoided, will result in severe personal injury or death and/or property damage.
WARNING : A warning statement describes a potentially hazardous situation that if not avoided, can result in severe personal injury and/or property damage.
CAUTION : A caution statement describes a potentially hazardous situation that if not avoided, can result in minor or moderate personal injury and/or property damage.
NOTE : A note provides important information that should not be ignored.

DANGER

• All gas conversion must be done by a qualified service person in accordance with these instructions and in compliance with all codes and requirements. In Canada, gas conversion shall be carried out in accordance with the requirements of the Provincial Authorities having jurisdiction and in accordance with the requirements of the CAN/CGA-B149.1 and CAN/CGA-B149.2 installation code.

• The gas burner in this gas-fired equipment is designed to provide safe complete combustion.
  However, if the installation does not permit the burner to receive the proper supply of combustion air, complete combustion may not occur. The result is incomplete combustion, which produces carbon monoxide, a poisonous gas that can cause death.

• Safe operation of indirect-fired gas burning equipment requires a properly operating vent system that vents all flue products to the outside atmosphere. Failure to provide proper venting will result in a health hazard that could cause serious personal injury or death.

• On separated combustion heaters, install either the horizontal or vertical combustion air/vent system illustrated in the heater venting manual, using the concentric adapter supplied. For all heater installations, always comply with the combustion air requirements in the installation codes and instructions. Standard Power Vent heaters installed in a confined space must be supplied with air for combustion as required by Code and in the heater installation manual. Combustion air at the burner should be regulated only by manufacturer-provided equipment. Never restrict or otherwise alter the supply of combustion air to any heater. Maintain the vent or vent/combustion air system in structurally sound and proper operating condition.

• Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operation, and maintenance instructions thoroughly before installing or servicing this equipment.

• The conversion kit is to be selected and installed by a qualified service person in accordance with these instructions and in compliance with all codes and requirements of authorities having jurisdiction. Failure to follow instructions could result in death, serious injury, and/or property damage. The qualified agency performing this work assumes responsibility for this conversion.

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.

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
(528(4110)3o6r51434(i| 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, 1-9/16-inch (40 mm) diameter opening| 202051
UDAP, UDAS
!ig9z8g6d3o6r5t4j)4().| 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
957
(VR8205 VR8215T1K2239) or
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| inch,
( 1/2-VR8205K2957 or single-stage
VR8215T1239),
3/4-inch single-stage
(VR8305K4241),
Or1/2-inch, two-stage
(VR8205N2921 orVR8305N4297)

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—CONTINUED

Table 2. Propane to Natural Gas Conversion Kit Components

Untt Size| Model
I (Ktt PN)| Component| Description| PN| Gas Valve
(Manufacturer’s PN)
All| Spring kit| #394588 for single-stage valve VR8105, VR8205, or VR8305| 98721| –
Tape| Conversion| 64391
Disk| Natural gas| 1401
Label”| High-elevation adjustment| 197062
030,
045| UDAP, UDAS,
UDBP, UDBS.
, ,
(269851) or UBX,
UBZ, UDX, UDZ
(1036544R)| Spring kit| Spring kit #396222 for a VR8215 single-stage valve| 261651| 1/2-inch, single-stage
(VR8105K2959,
VR8205K2965, or
VR8215T5214)
Burner orifices| Refer to Table 3
060
075| UDAP, UDAS,
UDBP, UDBS,
(269852) or UBX.  UBZ, UDX, UDZ
(1036545R)| Spring kit| #396222 for single-stage valve VR8215| 261651| 1/2-inch, single-
stage (VR85K2959,
VR8205K2965, or
VR8215T5214)
or
1/2-inch, two-stage
(VR8105N2931 or
VR8205N2913)

396205 for two-stage valve VR8105, VR8205, or VR8305| 197208

Burner orifices| Refer to Table 3
100,
125| UDAP, UDAS,
UDBP, UDBS,
(269853) or UBX,
UBZ, UDX, UDZ
(1036546R)| Spring kit| #396222 for single-stage valve VR8215| 261651

396205 for two-stage valve VR8105, VR8205, or VR8305| 197208

Burner orifices| Refer to Table 3
150,
175| UDAP, UDAS,
UDBP, UDBS,
(269854) or UBX,
UBZ, UDX, UDZ
(1036547R)| Spring kit| #396222 for single-stage valve VR8215| 261651

396205 for two-stage valve VR8105, VR8205, or VR8305| 197208

Burner orifices| Refer to Table 3
200,
225,
250| UDAP, UDAS,
UDBP, UDBS,
(269855) or UBX,
UBZ, UDX, UDZ
(1036548R)| Spring kit| #396222 for sinle-stage valve VR8215| 261651| 1/2-inch, single-stage (VR85K2959, VR8205K2965, or VR8215T5214),
3/4-inch single-stage
(VR8305 84258),
1/2-inch, two-stage
(VR8105N2931 or
VR8205N2913),
or
3/4-inch, two-stage
(VR8305N4289)

396205 for two-stage valve VR8105, VR8205, or VR8305| 197208

Burner orifices| Refer to Table 3
300,
350,
400| UDAP, UDAS,
UDBP, UDBS,
(201738) or UBX,
UBZ, UDX, UDZ
(1036549R)| Spring kit| #396205 for two-stage valve VR8105, VR8205, or VR8305| 197208| 3/4-inch, single-stage (VR8305N4258) or 3/4-inch, two-stage (VR8305N4289)
 Burner orifices| Refer to Table 3
Used only at installation elevations >2000 feet (>610 meters).

INSTALLATION

Install the conversion kit in accordance wiJ the following steps. Ensure that the kit is correct for the size of the heater being serviced (refer to Table 1 or Table 2). Heater component locations are shown in Figure 1.

1. Remove gas supply and electrical power:
   a. Turn off the gas supply at the shutoff valve outside of the heater.
   b. Turn off electrical power.
   c. Open control access panel.
   

2. Install regulator spring kit:
   WARNING
   Regulator spring kits are not interchangeable. Each kit must be used only in the model and type of gas valve for which the kit is designated. Verify compatibility before installing the regulator spring kit.
   a. Select a regulator spring kit that corresponds with a gas valve on the heater. All gas conversion kits include one or two regulator spring kits for single-stage valves and one regulator spring for two-stage valves. Other included regulator spring kits will not be used.
   b. Install regulator spring kit in accordance with gas valve manufacturer’s instructions (included with regulator spring kit).
   NOTE: After a new regulator spring kit is installed, it is necessary to adjust the spring for correct manifold pressure. This adjustment can be made only after the heater is in operation (refer to step 7).

3. Remove or install air restrictor plate as necessary and replace burner orifice:
   a. Carefully remove the existing burner orifice (see Figure 2, DETAIL A).
   DANGER

   • The air restrictor plate MUST BE INSTALLED when converting unit sizes 030, 045, 060, 075, 100, and 150 (all models) and unit size 125 (models UDBP, UDBS, UBX, and UBZ) to propane.
   • The air restrictor plate MUST BE REMOVED when converting unit sizes 030, 045, 060, 075, 100, and 150 (all models) and unit size 125 (models UDBP, UDBS, UBX, and UBZ) to natural gas.
   • For these models/unit sizes, the failure to install or remove the air restrictor plate in accordance with the following directions can cause death or injury and/or property damage.

b. For unit sizes 030, 045, 060, 075, 100, and 150 (all models) and unit size 125 (models UDBP, UDBS, UBX, and UBZ), proceed to step c. For all other models/unit sizes, proceed to step e.
c. If converting from propane to natural gas, remove the air restrictor plate as follows. If converting from natural gas to propane, install an air restrictor plate in accordance with step d.
(1) See Figure 2, DETAIL B to locate the air restrictor plate held in place on the venturi tube by its bent tabs.
(2) Use pliers to carefully unbend tabs as shown in Figure 2, DETAIL A, and remove the air restrictor plate.
d. For natural gas to propane conversion, install an air restrictor plate as follows:
(1) Refer to Table 1 or Table 2 to select the correct air restrictor plate. Slide plate in place over venturi tube opening so that its 45-degree angle is hooked over the rear of venturi tube (see Figure 2).
(2) While holding the plate in position, use pliers to carefully bend tabs to lock the plate in place (see Figure 2, DETAIL
B). Ensure that the air restrictor is aligned and secure.
e. For all conversions, select replacement burner orifices in accordance with Table 3. All conversion kits include two or three burner orifices. Other included orifice(s) will not be used.

Table 3. Burner Orifices

Unit Size| Model| Natural Gas| Propane
Orifice Size/Marking (PN)
30| UDAP, UDAS. UDBP, UDBS| #37 (196853)| 1.6 mm (196844)
UBX, UBZ, UDX, UDZ| #39 (196852)
45| UDAP, UDAS, UDBP, UDBS| #30 (196838)| #48 (196845)
UBX, UBZ, UDX, UDZ| 3.1 mm (120144)
60| UDAP, UDAS, UDBP, UDBS| 3.7 mm (196839)| 2.3 mm (196846)
UBX, UBZ, UDX, UDZ| #28 (124969)| 2.25 mm (1034350)
75| UDAP, UDAS. UDBP, UDBS| #19 (196855)| #39 (196852)
UBX, UBZ, UDX, UDZ| #22 (196361)| #40 (120137)
1®| UDAP, UDAS. UDBP, UDBS| #10 (120158)| 3.0 mm (196854)
UBX, UBZ, UDX, UDZ| #14 (208247)| #32 (120141)
125| UDAP, UDAS, UDBP, UDBS| #4 (196840)| 3.2 mm (196847)
UBX, UBZ, UDX, UDZ| #10 (120158)| 3.1 mm (120144)
150| UDAP, UDAS, UDBP, UDBS| 5.9 mm (131581)| 9/64-inch (196898)
UBX, UBZ, UDX, UDZ| 5.6 mm (208243)| 3.5 mm (120148)
175| UDAP, UDAS, UDBP, UDBS| E (196891)| #24 (196899)
UBX, UBZ, UDX, UDZ| 6.0 mm (208245)| #27 (120149)
200| UDAP, UDAS. UDBP, UDBS| 6.8 mm (196892)| 4.1 mm (196900)
UBX, UBZ, UDX, UDZ| F(120,167)
225| All| 6.95 mm (221121)| 11/64 inch (196901)
250| UDAP, UDAS, UDBP, UDBS| L (208255)| #14 (196902)
UBX, UBZ, UDX, UDZ| 4.60 mm (1034352)
300| UDAP, UDAS. UDBP, UDBS| 8.0 mm (221122)| #8 (196903)
UBX, UBZ, UDX, UDZ| 7.8 mm (208253)
350| UDAP, UDAS, UDBP, UDBS| 8.7 mm (221123)| #3 (196904)
UBX, UBZ, UDX, UDZ| 8.5 mm (1034354)| 5.4 mm (1034353)
400| UDAP, UDAS. UDBP, UDBS| 9.6 mm (196897)| 5.8 mm (196905)
UBX, UBS. UDX, UDZ| 9.2 mm (1034355)

WARNING

Do not attempt to drill burner orifice. Use factory-supplied orifice only.
f. Install replacement burner orifice (see Figure 2, DETAIL A).

CAUTION
If the heater will be operated at an elevation >6,000 feet (>1,830 meters), a high-elevation pressure switch must be installed.

NOTES:
• If the installation elevation is >6,000 feet (>1,830 meters), verify that the elevation on the rating plate or high-elevation label is >6,000 feet (>1,830 meters). If the rating plate or label does not indicate an elevation of >6,000 feet (>1,830 meters), order and install the appropriate high- pressure switch kit.
• If the heater is equipped for installation at an elevation of >6,000 feet (>1,830 meters) and is being installed at a lower elevation, order and install the appropriate switch.
• Contact your distributor to select the factory-authorized replacement part.

4. For installations at elevations >6,000 feet (>1,830 meters), replace the pressure switch:a. Locate the pressure switch in the control compartment (see Figure 1) and mark and disconnect two pressure switch wires.
   b. Mark and disconnect sensing tube(s) from the pressure switch.
   c. Remove two screws that secure the mounting bracket and remove the bracket and pressure switch. Save brackets and screws for reuse.
   d. Install replacement pressure switch using mounting bracket and two screws. Reconnect sensing tube(s) and wires.

5. Restore electrical power and gas supply:
   a. Turn on electrical power.
   b. Turn on the gas supply and relight the heater, following instructions on the heater.

6. Perform leak test:
   An a. Check all connections for gas leaks using commercial leak-detecting fluid or rich soap and water solution.
   Leaks are indicated by the presence of bubbles.
   b. If the leak is detected, tighten the connection. If the leak cannot be stopped by tightening the connection, replace the part(s).

7. Adjust manifold (outlet) pressure:
   WARNING
   Manifold gas pressure must never exceed 3.5 IN WC for natural gas or 10 IN WC for propane.
   a. Determine correct outlet pressure (refer to Table 4) for the elevation of installation. If unsure of elevation, contact the local gas supplier.
   b. Turn the knob or switch on top of the valve to OFF to prevent flow to the gas valve.
   NOTE : A manometer (fluid-filled gauge) is recommended rather than a spring-type gauge due to the difficulty of maintaining the calibration of a spring-type gauge. Use a water column manometer that is readable to the nearest tenth of an inch.
   c. Connect manometer to 1/8-inch output pressure tap on valve (see Figure 3).
   INSTALLATION—CONTINUED
   ** Table 4. Required Manifold (Outlet) Gas Pressure**

   Elevation| Single-Stage and Two-Stage High-Fire| Two-Stage Low- Fire
   Feet| Meters| Natural Gas| I Propane| | Natural Gas| I Propane|
   Manifold Pressure (IN WC)
   US
   0-2000| 0-610| 4.| 10.0| 2.| 5.0
   2001-3000| 611-915| 3.| 9.| 2.| 4.
   3001-4000| 916-1220| 3.0| 9.| 2.| 4.
   4001- 5000| 1221-1525| 3.| 8.| 2.| 4.
   5001-6000| 1526-1830| 3.| 8.| 1.| 4.
   6001-7000| 1831-2135| 3.| 7.| 1.| 4.
   7001-8000| 2136-2440| 3.| 7.| 1.| 4.
   8001-9000| 2441-2745| 2.| 7.| 1.| 3.
   9001-10,000| 2746-3045| 2.
   Canada
   0-2000| 0-610| 4.| 10.0| 2.| 5.0
   2001-4500| 611-1373| 3.| 8.| 2.| 4.

CAUTION
DO NOT bottom out the gas valve regulator screw. This can result in excessive overfire and heat exchanger failure due to unregulated manifold pressure.
d. For single-stage or two-stage high fire valve:
(1) Turn knob or switch on top of the valve to ON.
(2) Remove the cap from the regulator screw (see Figure 3) and adjust the pressure in accordance with Table 4 by turning the regulator screw IN (clockwise) to increase pressure or OUT (counterclockwise) to decrease pressure.
e. For two-stage low fire valve:
(1) Disconnect a wire from the HI terminal on the gas valve.
(2) Remove the cap from the low-fire regulator screw (see Figure 3) and adjust the pressure in accordance with Table 4 by turning the regulator screw IN (clockwise) to increase pressure or OUT (counterclockwise) to decrease pressure.
(3) Reconnect wire to Hi terminal on the gas valve.
f. Turn up the thermostat. For models UDAS, UDBS, UBZ, and UDZ depress and hold the door safety switch.
g. Cycle burner once or twice to properly seat adjustment spring in valve and recheck outlet pressure. When pressure corresponds to Table 4, disconnect the manometer and install a cap on the regulator screw.
h. Check for leakage at 1/8-inch outlet pressure tap fitting. Correct as necessary.
i. Connect manometer to inlet pressure tap (see Figure 3). While the heater is operating, measure inlet pressure, which should be as follows:
(1) between 5 and 13.5 IN WC for all natural gas models
(2) between 10 and 13.5 IN WC for UDAP, UDAS, UDBP, and UDBS propane models
(3) between 11 and 13.5 IN WC for UBX, UBZ, UDX, and UDZ propane models
j. If inlet pressure is not in accordance with step 7i, it must be corrected by adjusting manifold (outlet) pressure in accordance with steps 7b through 7e.
NOTES:
• Conversion of a unit using these kits does not alter the input rate. Refer to the rating plate on the heater for the input rate and other appropriate information.
• If adjusted for high-elevation operation, the input rate will be affected.
• The high-elevation adjustment label is not used on units operated at elevations of ≤2,000 feet (≤610 meters).
k. Refer to APPENDIX for input and capacity values for the elevation of installation.
(1) Use a permanent marker to fill in appropriate input and capacity values on a high-elevation adjustment label from the literature bag provided with the unit.
(2) Select a location for the label on the outside of heater access panel that will be conspicuous to anyone operating or servicing the unit.
(3) Ensure that surface is clean and dry and affix a label.
l. Observe heater operation for at least one complete cycle to check for safe and proper operation. For models UDAS, UDBS, UBZ, and UDZ depress and hold the safety door switch.

8. Close control access panel.

APPENDIX: INPUTS AND CAPACITIES BY ELEVATION

Inputs and Capacities by Elevation in the US

Elevation
(Feet (Meters))| Value| Unit Size
30| 45| 60| 75| 100| 125| 150| 175| 200| 225| 250| 300| 350| 400
BTUh
0-2000
(0-610)| A| 30,000| 45,000| 60,000| 75,000| 105,000| 120,000| 150,000| 175,000| 200,000| 225,000| 250,000| 300,000| 350,000| 400,000
B| 24,600| 37,350| 49,800| 62,250| 88,200| 100,800| 124,500| 145,250| 166,000| 186,750| 207,500| 249,000| 290,500| 332,000
C| 30,000| 45,000| 42,000| 52,500| 73,500| 84,000| 105,000| 122,500| 140,000| 157,500| 175,000| 210,000| 245,000| 280,000
2001-3000
(611-915)| A| 28,200| 42,300| 56,400| 70,500| 98,700| 112,800| 141,000| 164,500| 188,000| 211,500| 235,000| 282,000| 329,000| 376,000
B| 23,124| 35,109| 46,812| 58,515| 82,908| 94,752| 117,030| 136,535| 156,040| 175,545| 195,050| 234,060| 273,070| 312,080
C| 28,200| 42,300| 39,480| 49,350| 69,090| 78,960| 98,700| 115,150| 131,600| 148,050| 164,500| 197,400| 230,300| 263,200
3001-4000
(916-1220)| A| 27,600| 41,400| 55,200| 69,000| 96,600| 110,400| 138,000| 161,000| 184,000| 207,000| 230,000| 276,000| 322,000| 368,000
B| 22,632| 34,362| 45,816| 57,270| 81,144| 92,736| 114,540| 133,630| 152,720| 171,810| 190,900| 229,080| 267,260| 305,440
C| 27,600| 41,400| 38,640| 48,300| 67,620| 77,280| 96,600| 112,700| 128,800| 144,900| 161,000| 193,200| 225,400| 257,600
4001-5000
(1221-1525)| A| 27,000| 40,500| 54,000| 67,500| 94,500| 108,000| 135,000| 157,500| 180,000| 202,500| 225,000| 270,000| 315,000| 360,000
B| 22,140| 33,615| 44,820| 56,025| 79,380| 90,720| 112,050| 130,725| 149,400| 168,075| 186,750| 224,100| 261,450| 298,800
C| 27,000| 40,500| 37,800| 47,250| 66,150| 75,600| 94,500| 110,250| 126,000| 141,750| 157,500| 189,000| 220,500| 252,000
5001-6000
(1526-1830)| A| 26,400| 39,600| 52,800| 66,000| 92,400| 105,600| 132,000| 154,000| 176,000| 198,000| 220,000| 264,000| 308,000| 352,000
B| 21,648| 32,868| 43,824| 54,780| 77,616| 88,704| 109,560| 127,820| 146,080| 164,340| 182,600| 219,120| 255,640| 292,160
C| 26,400| 39,600| 36,960| 46,200| 64,680| 73,920| 92,400| 107,800| 123,200| 138,600| 154,000| 184,800| 215,600| 246,400
6001-7000
(1831-2135)| A| 25,800| 38,700| 51,600| 64,500| 90,300| 103,200| 129,000| 150,500| 172,000| 193,500| 215,000| 258,000| 301,000| 344,000
B| 21,156| 32,121| 42,828| 53,535| 75,852| 86,688| 107,070| 124,915| 142,760| 160,605| 178,450| 214,140| 249,830| 285,520
C| 25,800| 38,700| 36,120| 45,150| 63,210| 72,240| 90,300| 105,350| 120,400| 135,450| 150,500| 180,600| 210,700| 240,800
7001-8000
(2136-2440)| A| 25,200| 37,800| 50,400| 63,000| 88,200| 100,800| 126,000| 147,000| 168,000| 189,000| 210,000| 252,000| 294,000| 336,000
B| 20,664| 31,374| 41,832| 52,290| 74,088| 84,672| 104,580| 122,010| 139,440| 156,870| 174,300| 209,160| 244,020| 278,880
C| 25,200| 37,800| 35,280| 44,100| 61,740| 70,560| 88,200| 102,900| 117,600| 132,300| 147,000| 176,400| 205,800| 235,200
8001-9000
(2441-2745)| A| 24,600| 36,900| 49,200| 61,500| 86,100| 98,400| 123,000| 143,500| 164,000| 184,500| 205,000| 246,000| 287,000| 328,000
B| 20,172| 30,627| 40,836| 51,045| 72,324| 82,656| 102,090| 119,105| 136,120| 153,135| 170,150| 204,180| 238,210| 272,240
C| 24,600| 36,900| 34,440| 43,050| 60,270| 68,880| 86,100| 100,450| 114,800| 129,150| 143,500| 172,200| 200,900| 229,600
9001-10,000
(2746-3045)| A| 24,000| 36,000| 48,000| 60,000| 84,000| 96,000| 120,000| 140,000| 160,000| 180,000| 200,000| 240,000| 280,000| 320,000
B| 19,680| 29,880| 39,840| 49,800| 70,560| 80,640| 99,600| 116,200| 132,800| 149,400| 166,000| 199,200| 232,400| 265,600
C| 24,000| 36,000| 33,600| 42,000| 58,800| 67,200| 84,000| 98,000| 112,000| 126,000| 140,000| 168,000| 196,000| 224,000
A = normal input, B = thermal output capacity, and C = minimum input.

Inputs and Capacities by Elevation in Canada

Elevation
(Feet (Meters))| Value| Unit Size
30| 45| 60| 75| 100| 125| 150| 175| 200| 225| 250| 300| 350| 400
BTU h
0-2000
(0-610)| A| 30,000| 45,000| 60,000| 75,000| 105,000| 120,000| 150,000| 175,000| 200,000| 225,000| 250,000| 300,000| 350,000| 400,000
B| 24,600| 37,350| 49,800| 62,250| 88,200| 100,800| 124,500| 145,250| 166,000| 186,750| 207,500| 249,000| 290,500| 332,000
C| 30,000| 45,000| 42,000| 52,500| 73,500| 84,000| 105,000| 122,500| 140,000| 157,500| 175,000| 210,000| 245,000| 280,000
2001-4500
(611-1373)| A| 27,000| 40,500| 54,000| 67,500| 94,500| 108,000| 135,000| 157,500| 180,000| 202,500| 225,000| 270,000| 315,000| 360,000
B| 22,140| 33,615| 44,820| 56,025| 79,380| 90,720| 112,050| 130,725| 149,400| 168,075| 186,750| 224,100| 261,450| 298,800
C| 27,000| 40,500| 37,800| 47,250| 66,150| 75,600| 94,500| 110,250| 126,000| 141,750| 157,500| 189,000| 220,500| 252,000
A = normal input , B = thermal output capacity, and C = minimum input.

NOTES

Specifications and illustrations are subject to change without notice or incurring obligations.
©2021 Nortek Global HVAC LLC, O’Fallon, MO.
All rights reserved.
CP-UB-UD-GC (04-21) 1034364-A

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