Installation Manual

ManualsBrandsReznor ManualsHeatingLP to NG - Gas Conversion Kit - For Reznor UDX / UDZ / UBX / UBZ 60 and 75 Unit Heaters

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)

Revision: CP-UB-UD-GC (04-21) 1034364-A

GAS CONVERSION KIT INSTALLATION FOR UNIT HEATERS

Revision: CP-UB-UD-GC (02-21) 1034364-0

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 vent 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 the 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 IN A SAFE PLACE FOR FUTURE REFERENCE.

Summary of content (12 pages)

PAGE 1
Revision: CP-UB-UD-GC (04-21) 1034364-A Revision: CP-UB-UD-GC (02-21) 1034364-0 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 vent or separated-combustion heaters equipped with either a single-stage or two-stage gas valve.
PAGE 2
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.
PAGE 3
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.
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CONVERSION KIT SELECTION—CONTINUED Table 2.
PAGE 5
(unit sizes 030–125) Separated Combustion Units have a collar here for the combustion air pipe (not shown) Interlock Door Switch: Separated Combustion Units Disconnect Switch: Separated Combustion units ONLY Electric Box: UDAS and UDBS models ONLY Figure 1. Heater Components 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.
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INSTALLATION—CONTINUED ⚠ 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.
PAGE 7
⚠ 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).
PAGE 8
INSTALLATION—CONTINUED Table 4. Required Manifold (Outlet) Gas Pressure Elevation Feet Meters 0–2000 2001–3000 3001–4000 4001- 5000 5001–6000 6001–7000 7001–8000 8001–9000 9001–10,000 0–610 611–915 916–1220 1221–1525 1526–1830 1831–2135 2136–2440 2441–2745 2746–3045 0–2000 2001–4500 0–610 611–1373 REGULATOR SCREW INLET PRESSURE TAP Single-Stage and Two-Stage High-Fire Two-Stage Low-Fire Natural Gas Propane Natural Gas Propane Manifold Pressure (IN WC) US 3.5 10.0 1.8 5.0 3.1 8.8 1.6 4.4 3.0 8.5 1.
PAGE 9
⚠ 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 valve to ON. (2) Remove cap from regulator screw (see Figure 3) and adjust pressure in accordance with Table 4 by turning regulator screw IN (clockwise) to increase pressure or OUT (counterclockwise) to decrease pressure. e.
PAGE 10
APPENDIX: INPUTS AND CAPACITIES BY ELEVATION Inputs and Capacities by Elevation in US Elevation (Feet (Meters)) 0–2000 (0–610) 2001–3000 (611–915) 3001–4000 (916–1220) 4001–5000 (1221–1525) 5001–6000 (1526–1830) 6001–7000 (1831–2135) 7001–8000 (2136–2440) 8001–9000 (2441–2745) 9001–10,000 (2746–3045) Value* 030 045 060 A B C A B C A B C A B C A B C A B C A B C A B C A B C 30,000 24,600 30,000 28,200 23,124 28,200 27,600 22,632 27,600 27,000 22,140 27,000 26,400 21,648 26,400 25,800 21,156 25,800 25,2
PAGE 11
NOTES CP-UB-UD-GC (04-21) 1034364-A 11