WARNINGFOR YOUR SAFETYIf you smell gas: 1. Open windows. 2. DO NOT try to light any appliance. 3. DO NOT use electrical switches. 4. DO NOT us
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL2 of 59Figure 1: UHA[T][M][X][S]150 - 250 Label Placement*For separated combustion u
SECTION 1: HEATER SAFETY 3 of 59Figure 2: UHA[T][M][X][S]300 - 400 Label Placement*For separated combustion units only.**For modulating units only.Des
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL4 of 59SECTION 2: INSTALLER RESPONSIBILITYThe installer is responsible for the follo
SECTION 3: CRITICAL CONSIDERATIONS 5 of 59SECTION 3: CRITICAL CONSIDERATIONS3.1 Basic InformationUHA[T][M][X][S] heaters have automatic ignition burne
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL6 of 59SECTION 4: CLEARANCES TO COMBUSTIBLES4.1 Required Clearances to CombustiblesW
SECTION 4: CLEARANCES TO COMBUSTIBLES 7 of 59Figure 3: Installation Clearances and Clearances to Combustibles6"(15 cm)31"**(79 cm)3"(8
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL8 of 59SECTION 5: NATIONAL STANDARDS AND APPLICABLE CODES5.1 Gas CodesThe type of ga
SECTION 6: HEATER INSTALLATION 9 of 59SECTION 6: HEATER INSTALLATION 6.1 General Heaters are designed for installation above 6' (1.8 m). These h
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL10 of 59SECTION 7: VENTINGWARNINGCarbon Monoxide HazardHeaters must be vented outdoo
SECTION 7: VENTING 11 of 59concentric vent box and a concentric vent/air intake pipe penetrates the wall or roof. See Page 15, Figure 9 and Page 16, F
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL12 of 59dampers and any other gas-burning piece(s) of equipment to their previous co
SECTION 7: VENTING 13 of 59Figure 6: Standard Vented Heater - Vertical and Horizontal Vent TerminationVentFlashing(By Others)Vent TerminationVerticalO
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL14 of 59Figure 7: Standard Vented Heater - Common Vertical Vent TerminationRoof2&ap
SECTION 7: VENTING 15 of 59Figure 8: Separated Combustion Heater - Vertical and Horizontal Vent TerminationModel **Vent Diameter Part NumberUHA[T][M][
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL16 of 59Figure 10: Concentric Vertical and Horizontal Vent TerminationVent**Air Inta
SECTION 8: AIR SUPPLY 17 of 59SECTION 8: AIR SUPPLYWARNINGExplosion HazardEquipment must have access to uncontaminated air at all times.Failure to fol
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL18 of 59SECTION 9: GAS PIPINGWARNINGFire HazardConnect gas supply according to Figur
SECTION 9: GAS PIPING 19 of 59Figure 11: Gas ConnectionGas Shut-off ValveDrip LegCapUnionConnectionOption B:Medium or HeavyGauge PipeGas ConnectorOpti
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL20 of 59SECTION 10: WIRINGDANGERElectrical Shock HazardDisconnect electric before se
SECTION 10: WIRING 21 of 5910.2 Low Voltage Thermostat for Models UHA[T][M][X][S] 150-400NOTE: Models 300-400 have two axial fans.NOTE: Electrical sup
AVERTISSEMENTPOUR VOTRE SECURITESi vous sentez une odeur de gaz:1. Ouvrir les fenêtres.2. N’essayer pas d’allumer un appareil.3. N’utiliser pas d’int
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL22 of 5910.3 UHA[X][S] Series Internal Wiring Diagram for Single Stage Gas ValvesNOT
SECTION 10: WIRING 23 of 5910.4 UHA[X][S] Series Ladder Wiring Diagram for Single Stage Gas ValvesNOTE:For field wiring into service junction box, or
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL24 of 5910.5 UHA[T][X][S] Series Internal Wiring Diagram for Two Stage Gas Valves1W2
SECTION 10: WIRING 25 of 5910.6 UHA[T][X][S] Series Ladder Wiring Diagram for Two Stage Gas ValvesHIGHSTAGENOTE:For field wiring into service junction
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL26 of 5910.7 UHA[M][X][S] Series Internal Wiring Diagram for Modulating Gas ValvesNO
SECTION 10: WIRING 27 of 5910.8 UHA[M][X][S] Series Ladder Diagram for Modulating Gas ValvesNOTE:For field wiring into service junction box, or if any
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL28 of 5910.9 Electrical Connection to the HeaterNote: Junction box is not provided w
SECTION 11: OPERATION AND MAINTENANCE 29 of 59SECTION 11: OPERATION AND MAINTENANCECut/Pinch HazardWear protective gear during installation, operation
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL30 of 5911.2 Begin Start-Up 11.2.1 Before Operating the HeaterTo ensure that all
SECTION 11: OPERATION AND MAINTENANCE 31 of 59Figure 13: Single Stage Gas Valve for Models UHA[X][S] 150 - 400½PSI INCONOFFRegulatorOutletPressureGas
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL32 of 59Figure 15: Modulating Gas Valve for Models UHA[M][X][S] 150 - 400Description
SECTION 11: OPERATION AND MAINTENANCE 33 of 5911.2.2 Start-Up the Gas Valve (All Gases)11.2.2.1 Check Burner Gas Pressure (Single Stage)1. Remove the
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL34 of 5911.3 Pressure SwitchThe pressure switch is factory pre-set for each model an
SECTION 12: USER INSTRUCTIONS 35 of 59SECTION 12: USER INSTRUCTIONSCut/Pinch HazardWear protective gear during installation, operation and service.Edg
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL36 of 59Figure 16: LED INDICATION FAULT MODESlow Flash Normal Operation - No call fo
SECTION 13: SERVICING 37 of 59SECTION 13: SERVICINGCut/Pinch HazardWear protective gear during installation, operation and service.Edges are sharp.WAR
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL38 of 59and electrical supply. Remove the fan(s) and use a small brush or duster to
SECTION 13: SERVICING 39 of 59Cabinet Exterior After installation, touch up scratches. Periodic paintings should be done thereafter as required. Warni
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL40 of 59Wall Tag If a wall tag is present, make sure it is legible and accurate. Ple
SECTION 14: TROUBLESHOOTING 41 of 59SECTION 14: TROUBLESHOOTINGCut/Pinch HazardWear protective gear during installation, operation and service.Edges a
© 2014 AddisonAll rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form or by any means - gra
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL42 of 5914.1 General
SECTION 14: TROUBLESHOOTING 43 of 5914.2 Troubleshooting For Automatic Ignition Burner Systems For your safety and optimum heater performance, use onl
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL44 of 5914.3 Troubleshooting for Flame Supervision SystemNOTE: Minimum flame probe c
SECTION 14: TROUBLESHOOTING 45 of 5914.4 Troubleshooting for Gas Valves14.5 Troubleshooting for Flue BlowerFor your safety and optimum heater performa
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL46 of 59SECTION 15: REPLACEMENT PARTSCarbon Monoxide HazardWARNINGUse only genuine A
SECTION 15: REPLACEMENT PARTS 47 of 5915.2 Burner Compartment for Models UHA[T][M][X][S] 150-400Side View of Burner Compartment with Hinged Door Remov
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL48 of 5915.2.2 Remove 4 screws to remove manifold.Ensure gas tight fitting of inject
SECTION 15: REPLACEMENT PARTS 49 of 5915.3 Ignition Electrode and Flame Probe for Models UHA[T][M][X][S] 150-400Description Part Number Qty.Spark Elec
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL50 of 5915.4 Heat Exchanger The heat exchanger consists of a four-pass design with 1
SECTION 15: REPLACEMENT PARTS 51 of 5915.6 Flue Blower for Models UHA[T][M][X][S] 150-300 Remove screws securing outlet flange to the flue adapter.Ref
16.4 Dimension Data for Models UHA[T][M][X][S] 300-400 ... 5716.5 General Technical Data Table ...
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL52 of 5915.7 Flue Blower for Models UHA[T][M][X][S] 350-400 Vent BoxOutletGasketFlue
SECTION 15: REPLACEMENT PARTS 53 of 5915.8 Pressure SwitchCarbon Monoxide HazardUse correct pressure switch specified for each model.Use of incorrect
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL54 of 5915.10.1 Fan Removal and ReplacementWARNINGSevere Injury HazardTurn off gas a
SECTION 16: SPECIFICATIONS 55 of 59SECTION 16: SPECIFICATIONS16.1 Dimension Data for Models UHA[T][M][X][S] 150-250Model UHA[T][M][X][S]150 UHA[T][M][
UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL56 of 5916.2 General Technical Data TableModelUHA[T][M][X][S]150UHA[T][M][X][S]175UH
SECTION 16: SPECIFICATIONS 57 of 5916.4 Dimension Data for Models UHA[T][M][X][S] 300-400
Model UHA[T][M][X][S]300 UHA[T][M][X][S]350 UHA[T][M][X][S]400A in (cm) 52.3 (132.8) 52.3 (132.8) 52.3 (132.8)B in (cm) 43.2 (109.7) 43.2 (109.7) 43.2
SECTION 17: THE ADDISON® UHA-SERIES WARRANTY 59 of 59SECTION 17: THE ADDISON® UHA-SERIES WARRANTYADDISON WILL PAY FOR:Within 24 months from date of pu
TABLE OF FIGURESFigure 1: UHA[T][M][X][S]150 - 250 Label Placement ...2Figure 2: UHA[T][M][X][S]300 - 400 Label Placement ...3Fi
SECTION 1: HEATER SAFETY 1 of 59SECTION 1: HEATER SAFETYYour Safety is Important to Us! This symbol is used throughout the manual to notify you of po
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