Addison UHAT 150 Installation, Operation & Service Manual

Addison UHAT 150 Installation, Operation & Service Manual

Tubular unit heaters (standard range) uha-series
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FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Extinguish any open flame.
6. Leave the building.
7. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier's
instructions.
8. If you cannot reach your gas
supplier, call the Fire Department.
WARNING
Fire Hazard
Keep all flammable objects, liquids and
vapors the minimum required clear-
ances to combustibles away from
heater.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
damage.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or
property damage. Read the Installation, Operation
and Service Manual thoroughly before installing or
servicing this equipment.
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
© 2013 Addison
Tubular Unit Heaters
(Standard Range)
Installation, Operation
& Service Manual
Installer
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Keep this manual in a safe place in order to provide
your service technician with necessary information.
Addison
7050 Overland Road
Orlando, Florida 32810
Telephone: +1.407.292.4400
Fax: +1.407.290.1329
www.addison-hvac.com
UHA-Series
Models UHA[T][X][S]
150, 175, 200, 225
250, 300, 350, 400
Owner
P/N AD111101NA 10/13 Rev. C

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Summary of Contents for Addison UHAT 150

  • Page 1 Keep this manual in a safe place in order to provide in the installation and service of gas-fired heating your service technician with necessary information. equipment or your gas supplier. Addison 7050 Overland Road Orlando, Florida 32810 Telephone: +1.407.292.4400 Fax: +1.407.290.1329 www.addison-hvac.com P/N AD111101NA 10/13 Rev. C © 2013 Addison...
  • Page 3 éprouvé/contractant qualifié dans l’installation et la fournir des informations au réparateur maintenance du système de chauffage par infrarouge en cas de besoin. activé au gaz. Addison 7050 Overland Road Orlando, Florida 32810 Téléphone: +1.407.292.4400 Fax: +1.407.290.1329 www.addison-hvac.com P/N AD111101FC 10/13 Rev. C © 2013 Addison...
  • Page 5: Table Of Contents

    All rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping or information storage and retrieval systems - without the written permission of Addison. Printed in U.S.A.
  • Page 6 16.2 General Technical Data Table ........57 16.3 Technical Data Table ..........57 16.4 Dimension Data for Models UHA[X][S] 300-400 ..58 16.5 General Technical Data Table ........59 16.6 Technical Data Table ..........59 SECTION 17: The ADDISON ® UHA-Series Warranty ... 61...
  • Page 7 There are references in this manual to various trademarks. All trademarks mentioned herein, whether registered or not, are the property of their respective owners. Addison is not sponsored by or affiliated with any of the trademark or registered trademark owners, and makes no representations about them, their owners, their products or services.
  • Page 9: Section 1: Heater Safety

    Installation, service and, at a corrosive chemicals or other elements. To order minimum, annual inspection of heater must be done additional labels, please contact Addison or your by a contractor qualified in the installation and ADDISON ®...
  • Page 10: Figure 1: Uha[T][X][S]150 - 250 Label Placement

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL Figure 1: UHA[T][X][S]150 - 250 Label Placement Description Part Number Logo Label 91031107 Cut Hazard Label 91010430 Vent Length Label 91039505 Vent to Outdoors Label 91010427 Warning Label 91010429 Rating Plate Label 91010441 Installation Label 91010431...
  • Page 11: Figure 2: Uha[X][S]300 - 400 Label Placement

    SECTION 1: H EATER AFETY Figure 2: UHA[X][S]300 - 400 Label Placement Description Part Number Logo Label 91031107 Cut Hazard Label 91010430 Vent Length Label 91039505 Vent to Outdoors Label 91010427 Warning Label 91010429 Rating Plate Label 91010441 Installation Label 91010431 Instruction Location Label 91010433...
  • Page 12: Section 2: Installer Responsibility

    • To provide access for servicing. Addison cannot be responsible for ensuring that all • To provide the owner with a copy of this appropriate safety measures are undertaken prior to Installation, Operation and Service Manual.
  • Page 13: Section 3: Critical Considerations

    SECTION 3: C RITICAL ONSIDERATIONS SECTION 3: CRITICAL CONSIDERATIONS 3.1 Basic Information Technical Data Table on Page 57 , Section 16.2 and Page 59, Section 16.5. UHA[T][X][S] heaters have automatic ignition burners for ON/OFF or HIGH/LOW operation only. • Drop rods must be a minimum of 3/8" diameter mild steel.
  • Page 14: Section 4: Clearances To Combustibles

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 4: CLEARANCES TO COMBUSTIBLES 4.1 Required Clearances to Combustibles exposure to combustible airborne materials or vapors. WARNING 4.2 Clearances to Combustibles Clearances must be as indicated on Page 7 , Figure 3.
  • Page 15: Figure 3: Installation Clearances And Clearances To Combustibles

    SECTION 4: C LEARANCES COMBUSTIBLES Figure 3: Installation Clearances and Clearances to Combustibles Installation Clearances Clearances to Combustibles Roof Terminal (Optional separated combustion concentric venting shown.) 6" (15 cm) 6" (15 cm) 6" 31"** (15 cm) (79 cm) 24" (61 cm) for Wall (3 m) adequate...
  • Page 16: Section 5: National Standards And Applicable Codes

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 5: NATIONAL STANDARDS AND APPLICABLE CODES 5.1 Gas Codes 5.3 Parking Structures and Repair Garages The type of gas appearing on the serial plate Installation in garages must be in accordance must be the type of gas used.
  • Page 17: High Altitude

    SECTION 5: N ATIONAL TANDARDS AND PPLICABLE ODES 5.6 High Altitude These heaters are approved (without modifications) for installations up to 2000' (610 m) in US and Canada. Heaters installed above 2000' (610 m) must be de-rated. For installations above 2000' (610 m) in US, consult factory for information on burner de-rating.
  • Page 18: Section 6: Heater Installation

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 6: HEATER INSTALLATION 6.1 General The heater must be installed in accordance with clearances to combustibles as indicated on the wall Heaters are designed for installation above 6' tag and in this manual. (1.8 m).
  • Page 19: Section 7: Venting

    SECTION 7: V ENTING SECTION 7: VENTING 100-73 standards. High temperature silicone sealant must have a minimum temperature rating of WARNING 480° F (250° C). Carbon Monoxide Hazard 7.1.1 United States Requirements Heaters may be installed Vent must terminate at least 3' (.9 m) above any vented or unvented.
  • Page 20: Unvented Operation

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 7.2.1 Standard Vented Heaters 7.4 Horizontal Venting (Models UHA[T][X] 150-250 and Models UHA[X] Horizontally vented heaters must be individually 300-400) vented, no common venting. The vent must be fitted with a low resistance Vent pipe must be sloped ¼"...
  • Page 21: Replacing An Existing Heater In A Venting System

    SECTION 7: V ENTING 7.8 Replacing an Existing Heater in a Venting Standard CSA B149.1 Natural Gas and System Propane Installation Code (Canada) to When replacing an existing heater in a venting determine minimum size. All vent corrections system, the venting system may not be properly must be in accordance with the appropriate sized to vent the new heater.
  • Page 22: Figure 6: Standard Vented Heater - Vertical And Horizontal Vent Termination

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL Figure 6: Standard Vented Heater - Vertical and Horizontal Vent Termination Vent Termination Flashing 12" (31 cm) (By Others) Minimum from roof to vent termination Listed thimble through combustible roof Listed thimble Vent through combustible wall...
  • Page 23: Figure 7: Standard Vented Heater - Common Vertical Vent Termination

    SECTION 7: V ENTING Figure 7: Standard Vented Heater - Common Vertical Vent Termination Type "B" vent cap (7" [18 cm] or 8" [20 cm]) may be SIDE VIEW used. (These are not available from the manufacurer.) Type "B" Vent Pipe 2'(.6 m) Roof Minimum...
  • Page 24: Figure 8: Separated Combustion Heater - Vertical And Horizontal Vent Termination

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL Figure 8: Separated Combustion Heater - Vertical and Horizontal Vent Termination Air Intake Termination Vent Termination 12" (31 cm) Minimum from air inlet to vent termination. 24" (62 cm) Minimum from roof to vent termination.
  • Page 25: Figure 10: Concentric Vertical And Horizontal Vent

    SECTION 7: V ENTING Figure 10: Concentric Vertical and Horizontal Vent Termination - Separated Combustion Heater Vent Terminal 4" (10 cm) with Baffle Plate Type B-1Vent Combustion Air Terminal 6" (16 cm) Minimum 12" (31 cm) Maximum UHAS 150-250: 6" (15 cm) Diameter Single Wall Storm Collar (By Others) UHAS 300-400:...
  • Page 26: Section 8: Air Supply

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 8: AIR SUPPLY WARNING Explosion Hazard Equipment must have access to uncontaminated air at all times. Failure to follow these instructions can result in death, injury or property damage. 8.1 Separated Combustion Installation When installed as a separated combustion heater (UHA[T][X]S), the air for combustion is drawn in from outside the building.
  • Page 27: Section 9: Gas Piping

    SECTION 9: G IPING SECTION 9: GAS PIPING Canada: Rubber type 1 gas hose (Canadian WARNING models) is certified as being in compliance with the standard for elastomeric composite hose and hose couplings for conducting propane and natural gas, CAN/CGA 8.1 - latest revision. 9.1 Connections Connect the heater to the gas supply ensuring that Fire Hazard...
  • Page 28: Figure 11: Gas Connection

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL Figure 11: Gas Connection CAUTION Product Damage Hazard Hold gas nipple securely with pipe wrench when attaching flexible gas connector. Failure to follow these instructions can result in product damage. Option A: Stainless Steel Flexible Gas Connector...
  • Page 29: Section 10: Wiring

    SECTION 10: W IRING SECTION 10: WIRING 10.1.1 Fan Control The heater’s axial fan can be used during the off- DANGER season for air circulation. A low voltage programmable thermostat with fan switch (P/N 90425400) must be used. For thermostat connection details, See Page 22, Section 10.2 and Page 22, Section 10.3.
  • Page 30: Low Voltage Thermostat With One Heater For Models Uha[T][X][S] 150-250

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 10.2 Low Voltage Thermostat with One Heater for Models UHA[T][X][S] 150-250 Terminal Strip 24 Volt Thermostat Heating Only C W G R Gas Supply NOTE: Electrical supply is located below terminal strip. Terminal Strip 24 Volt...
  • Page 31: Low Voltage Thermostat With Multiple Heaters (Models Uha[T][X][S]150 - 250)

    SECTION 10: W IRING 10.4 Low Voltage Thermostat with Multiple Heaters (Models UHA[T][X][S]150 - 250) Transformer Relay FRONT VIEW BACK VIEW Low Voltage Thermostat Black COIL COIL Purple Black Heater 1 Heater 2 White 120V-60 Hz Gnd. Gnd. supply circuit Heater 3 Heater 4 Gnd.
  • Page 32: Low Voltage Thermostat With Multiple Heaters (Models Uha[X][S]300 - 400)

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 10.5 Low Voltage Thermostat with Multiple Heaters (Models UHA[X][S]300 - 400) Transformer Relay FRONT VIEW BACK VIEW Low Voltage Thermostat Black COIL COIL Purple Black White Heater 1 120V-60 Hz Gnd. supply circuit Gnd.
  • Page 33: Uha[X][S] Series Internal Wiring Diagram For Single Stage Gas Valves

    SECTION 10: W IRING 10.6 UHA[X][S] Series Internal Wiring Diagram for Single Stage Gas Valves NOTE: For field wiring into service junction box, or if any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C (221°...
  • Page 34: Uha[X][S] Series Ladder Wiring Diagram For Single Stage Gas Valves

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 10.7 UHA[X][S] Series Ladder Wiring Diagram for Single Stage Gas Valves NOTE: For field wiring into service junction box, or if any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C (221°...
  • Page 35: Uha[T][X][S] Series Internal Wiring Diagram For Two Stage Gas Valves

    SECTION 10: W IRING 10.8 UHA[T][X][S] Series Internal Wiring Diagram for Two Stage Gas Valves HIGH COMMON W2 HIGH/LOW CONTROL NOTE: For field wiring into service junction box, or if any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C (221°...
  • Page 36: Uha[T][X][S] Series Ladder Wiring Diagram For Two Stage Gas Valves

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 10.9 UHA[T][X][S] Series Ladder Wiring Diagram for Two Stage Gas Valves HIGH STAGE NOTE: For field wiring into service junction box, or if any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105°...
  • Page 37: Electrical Connection To The Heater

    SECTION 10: W IRING 10.10 Electrical Connection to the Heater Note: Junction box is not provided with heater. Conduit can also be attached directly to heater with wire junction made within the heater cabinet. 29 of 59...
  • Page 38: Section 11: Operation And Maintenance

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 11: OPERATION AND MAINTENANCE WARNING DANGER Electrical Shock Hazard Explosion Hazard Burn Hazard Cut/Pinch Hazard Turn off gas supply to Allow heater to cool Wear protective gear Disconnect electric heater before service. before service.
  • Page 39: Begin Start-Up

    SECTION 11: O PERATION AND AINTENANCE 11.2 Begin Start-Up 11.2.1 Before Operating the Heater To ensure that all the controls are in safe working order, operate the heater for the first time with the isolating gas valve turned off and power supply turned on.
  • Page 40: Figure 13: Single Stage Gas Valve For Models Uha[X][S] 150-400

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL Figure 13: Single Stage Gas Valve for Models UHA[X][S] 150-400 TOP VIEW Regulator END VIEW Outlet Gas Inlet Pressure Description Part Number Gas Valve 150 - 250 NG 90032505 Gas Valve 150 - 250 LP 90032506 Gas Valve 300 - 400 NG 90032520...
  • Page 41: Pressure Switch

    SECTION 11: O PERATION AND AINTENANCE 11.2.2 Start-Up the Gas Valve (All Gases) The fan will continue to run until it is stopped automatically by the fan thermostat. 11.2.2.1 Check Burner Gas Pressure Do not use a disconnect switch for control of 1.
  • Page 42: Section 12: User Instructions

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 12: USER INSTRUCTIONS WARNING DANGER Electrical Shock Hazard Explosion Hazard Burn Hazard Cut/Pinch Hazard Turn off gas supply to Allow heater to cool Wear protective gear Disconnect electric heater before service. before service.
  • Page 43: Section 13: Servicing

    SECTION 13: S ERVICING SECTION 13: SERVICING WARNING DANGER Electrical Shock Hazard Explosion Hazard Burn Hazard Cut/Pinch Hazard Turn off gas supply to Allow heater to cool Wear protective gear Disconnect electric heater before service. before service. during installation, before service. operation and service.
  • Page 44: Fan/Motor Assembly Maintenance

    Addison and conform to all requirements set forth 13.5 Gas Valve Maintenance ® in the ADDISON manuals and all applicable No regular maintenance is required on this device.
  • Page 45 After installation, touch up scratches. Periodic paintings should be done thereafter as required. Warning labels and logo labels should be legible and ® accurate. Please contact Addison or ADDISON independent distributor if you need replacement warning labels or logo labels.
  • Page 46 Flush drain and clear any obstructions. (when installed) Wall Tag If a wall tag is present, make sure it is legible and accurate. Please contact Addison or your ADDISON ® independent distributor if you need a wall tag. See Page 4, Section 2.1.
  • Page 47: Section 14: Troubleshooting

    SECTION 14: T ROUBLESHOOTING SECTION 14: TROUBLESHOOTING WARNING DANGER Electrical Shock Hazard Explosion Hazard Burn Hazard Cut/Pinch Hazard Turn off gas supply to Allow heater to cool Wear protective gear Disconnect electric heater before service. before service. during installation, before service. operation and service.
  • Page 48: General

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 14.1 General 40 of 59...
  • Page 49: Troubleshooting For Automatic Ignition Burner Systems

    SECTION 14: T ROUBLESHOOTING 14.2 Troubleshooting For Automatic Ignition Burner Systems For your safety and optimum heater performance, use only replacement parts sold and supplied by Addison. Conduct start-up procedure as shown on Page 30, Section 11. 41 of 59...
  • Page 50: Troubleshooting For Flame Supervision System

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 14.3 Troubleshooting for Flame Supervision System To measure flame current, connect a 0 - 50 μA DC meter in series with the flame probe. If the meter reads negative values, then reverse the test leads. NOTE: Minimum flame probe current 1 μA DC.
  • Page 51: Troubleshooting For Gas Valves

    14.4 Troubleshooting for Gas Valves 14.5 Troubleshooting for Flue Blower For your safety and optimum heater performance, use only genuine replacement parts sold and supplied by Addison. Conduct start-up procedure as shown on Page 30, Section 11. 43 of 59...
  • Page 52: Section 15: Replacement Parts

    Explosion Hazard Carbon Monoxide Hazard Fire Hazard ® Use only genuine ADDISON replacement parts per this installation, operation and service manual. Failure to follow these instructions can result in death, electric shock, injury or property damage. See warnings and important information on Page Replace in reverse order.
  • Page 53: Burner Compartment For Models Uha[T][X][S]

    SECTION 15: R EPLACEMENT ARTS 15.2 Burner Compartment for Models UHA[T][X][S] 150-250 Side View of Burner Compartment with Hinged Door Removed Before burner removal, remove the 10 screws holding the filler panel on Filler Panel and remove the filler panel. Burner Assembly 15.2.1...
  • Page 54 UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 15.2.2 Burner Injectors for Models UHA[T][X][S] 150-250 Remove 4 screws to remove manifold. Ensure gas tight fitting of injectors. Ensure correct alignment with burners. Ensure all pipe joints are gas tight. UHA[T][X][S] UHA[T][X][S] UHA[T][X][S]...
  • Page 55: Burner Compartment For Models Uha[X][S] 300-400

    SECTION 15: R EPLACEMENT ARTS 15.3 Burner Compartment for Models UHA[X][S] 300-400 The burner compartment is Burner a sealed compartment. Compartment Following any work, Cover re-seal the compartment Flame Probe with the gas pipe rubber Viewing port for flame probe seal fully in place and all Remove flexible screws fitted and tight.
  • Page 56: Ignition Electrode And Flame Probe For Models Uha[T][X][S] 150-250

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 15.4 Ignition Electrode and Flame Probe for Models UHA[T][X][S] 150-250 To replace the ignition electrode or flame probe, remove the electrical lead and screw. Pull out from mounting. Refit in reverse ensuring that the gap to burner is as shown in the front view of the burner compartment.
  • Page 57: Ignition Electrode And Flame Probe For Models

    SECTION 15: R EPLACEMENT ARTS 15.5 Ignition Electrode and Flame Probe for Models UHA[X][S] 300-400 Inshot Burners Inshot Burners Limit Thermostat Flame Flame Probe Probe Remove all burner compartment screws to remove the burner Flame Remove compartment and Probe Screw access the “Front View”...
  • Page 58: Uha[X][S] 300-400

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 15.6 Heat Exchanger The heat exchanger consists of a four-pass design with 1.75" outer diameter [aluminized steel] [409 stainless steel] tube. The tube plates are made of [aluminized steel] [409 stainless steel]. The tube supports are made of [aluminized steel] [409 stainless steel].
  • Page 59: Flue Blower For Models Uha[T][X][S] 150-175

    SECTION 15: R EPLACEMENT ARTS 15.8 Flue Blower for Models UHA[T][X][S] 150-175 Remove screws securing outlet flange to the flue adapter. Rear Panel Refit in reverse order. Gasket Flue Fan Vent Box Disconnect electrical connections at plug in tabs. Remove screws securing flue fan mounting plate to vent box.
  • Page 60: Flue Blower For Models Uha[T][X][S] 200-300

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 15.9 Flue Blower for Models UHA[T][X][S] 200-300 Remove screws securing outlet flange to the flue adapter. Refit in reverse order. Disconnect electrical connections at plug in tabs. Remove screws securing flue fan mounting plate to vent box.
  • Page 61: Flue Blower For Models Uha[X][S] 350-400

    SECTION 15: R EPLACEMENT ARTS 15.10 Flue Blower for Models UHA[X][S] 350-400 Remove screws securing outlet Rear Panel flange to the flue adapter. Flue Adapter to Flue Blower Hole screw Refit in reverse order. Vent Box Flue Vent Box Outlet Adapter screws Gasket...
  • Page 62: Pressure Switch

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 15.11 Pressure Switch WARNING Carbon Monoxide Hazard Use correct pressure switch specified for each model. Use of incorrect pressure switch or disabling pressure switch circuit could cause unsafe condition. Failure to follow these instructions can result in death or serious injury.
  • Page 63: Limit Switches

    • Strictly comply with the color code of the fan wires to ensure correct operation. See Page 25, Section 10.6 or Page 27 , Section 10.8 wiring diagram. • Use only genuine replacement parts sold and supplied by Addison. 55 of 59...
  • Page 64: Section 16: Specifications

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL SECTION 16: SPECIFICATIONS 16.1 Dimension Data for Models UHA[T][X][S] 150-250 Heater must be supported TOP VIEW at these points from above or below. 4 x 3/8" Captive Nuts Provided SIDE VIEW REAR VIEW Air Intake (UHA[T][X]S only)
  • Page 65: General Technical Data Table

    SECTION 16: S PECIFICATIONS 16.2 General Technical Data Table UHA[T][X][S] UHA[T][X][S] UHA[T][X][S] UHA[T][X][S] UHA[T][X][S] Model Full Load Amps @ 120 V 10.6 10.6 10.6 10.6 10.6 Air Volume 3500 3500 3716 3716 3716 Flue and Air Intake Flue Intake Size in (cm) 4 (10) 4 (10)
  • Page 66: Dimension Data For Models Uha[X][S] 300-400

    UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 16.4 Dimension Data for Models UHA[X][S] 300-400 TOP VIEW Heater must be supported at these points from above or below. 4 x 3/8" Captive Nuts Provided SIDE VIEW REAR VIEW Air Intake (UHA[X]S only) Flue Supply...
  • Page 67: General Technical Data Table

    SECTION 16: S PECIFICATIONS Model UHA[X][S]300 UHA[X][S]350 UHA[X][S]400 in (cm) 52.3 (132.8) 52.3 (132.8) 52.3 (132.8) in (cm) 43.2 (109.7) 43.2 (109.7) 43.2 (109.7) in (cm) 25.5 (64.8) 25.5 (64.8) 25.5 (64.8) in (cm) 24.7 (62.7) 24.7 (62.7) 24.7 (62.7) in (cm) 19.4 (49.3) 19.4 (49.3)
  • Page 68 UHA S TANDARD EATER NSTALLATION PERATION AND ERVICE ANUAL 60 of 59...
  • Page 69: Section 17: The Addison

    Parts or have additional questions, call or write: manufacturing or material defect. Addison will require the part in question to be returned to Addison the factory. Addison will, at its sole discretion, repair or...

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