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WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or loss of life. Installation and service must be performed
by a licensed professional installer (or equivalent), service
agency or the gas supplier.
CAUTION
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
Table Of Contents
Shipping and Packing List ..............................................2
UHRS-030/105 Compact Unit Dimensions.....................3
Compact Unit Parts Arrangement ...................................4
UHCM-125/200 Standard Unit Dimensions ....... ............5
UHCM-250/400 Standard Unit Dimensions ........ ...........6
Standard Unit Parts Arrangement...................................7
Optional Accessory .........................................................8
Requirements in USA .....................................................8
Requirements in Canada ................................................8
Additional Requirements ................................................9
Unit Heater Installation ...................................................9
Rotation of Combustion Air Inducer - 125/150.............. 11
Combustion and Ventilation Air.....................................12
Venting.......................................................................... 12
Electrical Connections ..................................................17
Be sure to read and understand the
structions in this manual.
ation, service or maintenance can cause
serious injury, death or property damage.
Do not store or use gasoline or other
cinity of this or any other appliance.
formed by a qualified installer, service
agency or the gas supplier.
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
WARNING
FIRE OR EXPLOSION HAZARD.
Failure to
ly could result in serious injury, death,
or property damage.
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
structions.
If you cannot reach your gas supplier, call the
fire department.
INSTALLATION
INSTRUCTIONS
UH(RS,CM)
30,000 to 400,000 Btuh Series
UNIT HEATERS
507938-05
7/2021
Supersedes 507938-04
Note - Unit heaters are designed for indoor use only.
Gas Connection ...........................................................22
Leak Check ..................................................................23
Unit Start-Up ................................................................23
To Turn Off Gas to Unit ................................................24
Heating Sequence of Operations ................................24
Gas Flow .....................................................................24
High Altitude Adjustments ............................................25
Ignition Control LED ....................................................25
Gas Pressure Adjustments ..........................................25
Limit Control Switch ......................................................26
Louver Vane Adjustment ..............................................26
Combustion Air Pressure Switch .................................26
Flame Roll-out Switch ..................................................26
Service..........................................................................26
Start-Up and Performance Checklist ...........................27
Page 1
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Table of Contents
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Summary of Contents for Adp UH Series
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Page 1: Table Of Contents
WARNING INSTALLATION INSTRUCTIONS Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury UH(RS,CM) or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent), service 30,000 to 400,000 Btuh Series agency or the gas supplier. -
Page 2: Shipping And Packing List
Shipping and Packing List Shipping and Packing List 30-105 Units 125-400 Units Package 1 of 1 contains: Package 1 of 1 contains: 1-Unit Heater 1-Unit Heater 2-Hanging brackets 1-Burner box hood 1-Rectangular to round flue transition (4” Flue transition is factory-installed) Bag assembly containing: - 4”... -
Page 3: Uhrs-030/105 Compact Unit Dimensions
UHRS-030 / 105 DIMENSIONS - Inches (mm) MOUNTING SLOTS (Typical) HANGING 5/16 x 3 Inches (8 x 76 mm) BRACKETS (2) 8-3/4 10-1/2 (222) (267) 2-3/4 4-1/4 (70) [13] (108) (25) FLOW (533) HEAT EXCHANGER (25) ELECTRICAL TOP VIEW INLET THERMOSTAT INLET HANGING... -
Page 4: Compact Unit Parts Arrangement
Page 4... -
Page 5: Uhcm-125/200 Standard Unit Dimensions
UHCM-125 / 200 DIMENSIONS - Inches (mm) 10-1/2 5-3/8 16 (406) (267) (137) 1/2 (13) FLUE OUTLET 3-1/8 (79) 1/2 (13) (4) 3/8-16 MOUNTING NUTS 2-1/2 (64) FOR UNIT SUSPENSION TOP VIEW ELECTRICAL / THERMOSTAT INLETS 10-5/8 31-7/8 (810) (270) COMBUSTION AIR ADJUSTABLE INDUCER... -
Page 6: Uhcm-250/400 Standard Unit Dimensions
UHCM-250 / 400 DIMENSIONS - Inches (mm) 10-1/2 16 (406) (267) (76) 5-3/8 (137) 1/2 (13) FLUE OUTLET 3-1/8 (79) 1/2 (13) (4) 3/8-16 MOUNTING NUTS FOR UNIT SUSPENSION 2-5/8 (67) ELECTRICAL / TOP VIEW THERMOSTAT INLETS 10-5/8 31-7/8 (810) (270) COMBUSTION AIR ADJUSTABLE... -
Page 7: Standard Unit Parts Arrangement
Page 7... -
Page 8: Optional Accessory
Optional Accessory Requirements in Canada These instructions are intended only as a general guide Units require a changeover kit when the unit is to be used and do not supersede local codes in any way. Authorities with LP/propane gas. The kit is ordered separately. See having jurisdiction should be consulted before installation. -
Page 9: Additional Requirements
UHCM-125/400 UNITS TABLE 1 UNIT CLEARANCES TO COMBUSTIBLE MATERIALS Four mounting nuts are furnished. Refer to dimension illustration. Mounting nuts will accommodate 3/8” x 16 Side** Bottom Back Flue threaded rods. Unit CAUTION 030/105 125/400 Do not install unit heaters in close proximity to fire *6”... - Page 10 FIGURE 2 FIGURE 3 Page 10...
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Page 11: Rotation Of Combustion Air Inducer - 125/150
UHRS-30/105 Rotation of Combustion Air Inducer (UHCM-125 & 150 Only) Unit may be installed as shown in figure 4 o r rotated The combustion air inducer on UHCM-125 & 150 may 180°. be rotated 90° either to the left or right of the original 1 - Push each louver to the right to depress spring and vertical position in order to better suit the application. -
Page 12: Combustion And Ventilation Air
Venting Combustion and Ventilation Air NOTE - The gas vent is a passageway, vertical or nearly Adequate facilities for supplying air for combustion and so, used to convey flue gases from an appliance, or its ventilation must be provided in accordance with the cur- vent connector, to the outside atmosphere. - Page 13 A single-wall, metal vent pipe used as a vent connector in 3 - Keep the vent connector runs as short as possible residential or commercial applications, or as a vertical gas with a minimum number of elbows. Refer to the vent in commercial applications, must have all seams and current edition of ANSI Z223.1 or CSA-B149 joints sealed with pressure-sensitive aluminum tape or...
- Page 14 6 - The unit may be vented vertically as a single appliance TABLE 4 or in a common vent with other gas-fired appliances. MAXIMUM HORIZONTAL VENT CONNECTOR AND In common venting situations, vent connectors for HORIZONTAL VENT PIPE LENGTHS other appliances must maintain a 4” (102mm) vertical separation between the vent connectors.
- Page 15 13 - All horizontal vents which use special vent pipe for 16 - For upward sloped vent, a condensate tee and drain must be installed within the first 5 feet (1.5m) use with Category III appliances must terminate with a listed termination tee. Termination must from the unit heater to protect the appliance (see figure 7).
- Page 16 CONDENSATE DRAIN THROUGH VENT TERMINATION DOWNWARD SLOPE ON HORIZONTAL VENT−RESIDENTIAL OR COMMERCIAL APPLICATION NOTE − Minimum horizontal vent length is 5 ft. This does not include termination tee. DOUBLE Refer to table 4 for LISTED THIMBLE MALE maximum length and THROUGH ADAPTER ELBOW...
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Page 17: Electrical Connections
8 - If B-1 vent or an insulated flexible vent pipe cannot Electrical Connections be used as liners, the chimney must be rebuilt NOTE - Local codes may supersede any of the provisions to accommodate one of these methods or some outlined in this instruction. - Page 18 LINE VOLTAGE WIRING HIGH VOLTAGE WIRING 1 - Install a separate fused disconnect switch with the 125 / 400 fuse sized according to the blower motor size. NOTE - Electrically ground unit in accordance with local GRN-YEL codes or, in the absence of local codes, in accordance with the current editions of the ANSI/NFPA No.
- Page 19 5 3 7 9 9 2 -0 2 I GN CT RL HI GH VOL T AGE POW E R CONNE CT I ONS BL K W HT GRN- YE L W HT F I E L D PROVI DE D F ACT ORY I NS T AL L E D POW E R POW E R W I RI NG.
- Page 20 5 3 8 0 2 5 -0 2 I GN CT RL HI GH VOL T AGE POW E R CONNE CT I ONS BL K W HT GRN- YE L W HT F I E L D PROVI DE D POW E R W I RI NG. CONNE CT T O P366 AND GRE E N GROUND S CRE W L OCAT E D I NS I DE UNI T .
- Page 21 5 3 8 0 2 4 -0 2 I GN CT RL HI GH VOL T AGE POW E R CONNE CT I ONS BL K W HT GRN- YE L BL U BL U W HT F I E L D PROVI DE D POW E R W I RI NG. CONNE CT T O P366 AND GRE E N GROUND S CRE W L OCAT E D I NS I DE UNI T .
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Page 22: Gas Connection
Gas Connection GAS SUPPLY CONNECTION Note - Install protective bushing (provided in bag as- sembly) before making gas connections. MANUAL MAIN SHUT-OFF VALVE When connecting gas supply, the length of the run from (Furnished by Installer) the meter must be considered in determining the pipe size to avoid excessive pressure drop. -
Page 23: Leak Check
Return Air Temperature Requirements: Leak Check The following return air temperatures must be maintained for op- After gas piping is completed, carefully check all piping timum unit operation and extended life of the heat exchanger. connections, (field and factory), for gas leaks. Use a soap Failure to comply with the conditions will void the warranty. -
Page 24: To Turn Off Gas To Unit
To Turn Off Gas to Unit Heating Sequence of Operation 1 - When the thermostat calls for heat, the combustion 1 - Set thermostat to lowest level. air inducer starts immediately. 2 - Turn off all electrical power to unit if service is to be 2 - Combustion air pressure switch proves inducer performed. -
Page 25: High Altitude Adjustments
n the , units may be fired at full input up to 000 feet The ignition control contains a green D which indicates 6 0m above sea level. bove 000 feet 6 0m , unit the following must be de-rated by four percent per 000 feet for instal- lation above 000 feet. -
Page 26: Limit Control Switch
Limit Control Switch Supply Pressure Measurement 1 - Shut off the manual main supply valve (field The limit control switch(es) is factory-set and is not field-adjustable. furnished) when installing or removing the measuring device (Steps 2 and 6). Louver Vane Adjustment 2 –... -
Page 27: Start-Up And Performance Checklist
FLUE PASSAGEWAY AND FLUE BOX FAILURE TO OPERATE The flue passages and flue box should be inspected and If unit fails to operate check the following: cleaned prior to each heating season. The sequence of 1 - Is thermostat calling for heat? operation should be as follows: 2 - Is main disconnect closed? 1 - Turn off both electrical and gas supply to unit. - Page 28 * In such states or provinces where registration requirements are prohibited, failure to complete registration by the consumer does not diminish his or her warranty rights.