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Installation, Operation
& Service Manual
Models UHA[S]
150, 1
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TABLE OF CONTENTS SECTION 1: Heater Safety......................................................1 SECTION 11: User Instructions............................................22 1.1 Manpower Requirements .............................................1 11.1 User Instructions.......................................................22 SECTION 2: Installer Responsibility .....................................2 11.2 Heater Operation ......................................................22 2.1 Wall Tag ......
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TABLE OF FIGURES Figure 1: Installation Clearances and Clearances to Combustibles.........................................................4 Figure 2: Suspension Methods .................................................6 Figure 3: Vent and Roof Detail ..................................................9 Figure 4: Standard Vented Heater - Vertical and Horizontal Vent Termination................................9 Figure 5: Standard Vented Heater - Common Vertical Vent Termination.................
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SECTION 1: HEATER SAFETY SECTION 1: HEATER SAFETY Your Safety is Important to Us! This symbol is used throughout the manual to notify you of possible fire, electrical or burn hazards. Please pay special attention when reading and following the warnings in these sections. Installation, Service and Annual Inspection of heater must be done by a contractor qualified in the installation and service of gas-fired heating equipment. Read this manual carefully before installation, operation or
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® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 2: INSTALLER RESPONSIBILITY The installer is responsible for the following: 2.2 Corrosive Chemicals • To install the heater, as well as the gas and electrical supplies, in accordance with applicable specifications and codes. Roberts-Gordon
recommends the installer contact a Local Building Inspector or Fire Marshal for guidance.
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SECTION 3: CRITICAL CONSIDERATIONS SECTION 3: CRITICAL CONSIDERATIONS 3.1 Basic Information 3.7 Electrical Supply UHA[S] heaters have automatic ignition burners for A permanent 120 V 60 Hz 1 Ø electrical supply is ON/OFF operation only. required for the main electrical power. The heater also requires suitable controls in accordance with See Page 15, Section 9. 3.2 Location and Suspension All models: 3.8 Vent • Must be installed indoors. Choose heater orientation to allow for the proper • Mu
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® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL $%& ! '( ) *
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SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES 4.1 Gas Codes 4.3 Parking Structures and Repair Garages The type of gas appearing on the name plate Installation in garages must be in accordance must be the type of gas used. Installation must with the following codes: comply with national and local codes and United States: Standard for Parking Structures requirements of the local gas company. NFPA 88A - latest revision or the Code for Motor
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® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 5: MAJOR COMPONENTS 5.1 General Heaters are designed for installation above 6' (1.8 m). These heaters must be installed within the heated space. Duct delivery systems are not permitted with axial fan units. When handling or supporting the heater from below, ensure that the weight is taken at the support points. 5.2 Suspension $%& '( -./0
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SECTION 6: VENTING SECTION 6: VENTING 6.1 Venting 6.1.2 Canadian Requirements This heater must be vented in accordance with the The vent shall not terminate within 6' (1.8 m) of a rules contained in this manual and with the following mechanical air supply inlet to any building. national codes and any state, provincial or local The vent shall not terminate within 3' (.9 m) of a codes which may apply: United States: Refer to window or door that can be opened in any building, NFPA 54/ANSI Z223
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® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 6.2.2 Separated Combustion Heaters 6.5 Vertical Venting (Models UHAS 150 - 400) Vertically vented heaters can be common vented The heaters are designed to be installed as (up to 4 heaters). separated combustion heaters. The vent and air For vent lengths greater than 5' (1.5 m), intake are run as separate pipes to the wall or roof condensation will form. Insulation is recommended terminals. See Page 12, Figure 8. As
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SECTION 6: VENTING 6.7 Vent Material Figure 3: Vent and Roof Detail Vent material may be single wall 26 ga. (minimum) galvanized steel or equal thickness stainless steel. Completely seal all joints, refer to Page 7, Section 6.2. 7 If penetrating a combustible wall or roof, a listed $ thimble with 2" (5 cm) clearance must be used. Where local codes permit, a single section of type B-1 vent material may be used at the roof or wall penetration instead of a thimble. Ensure vent 9
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® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 5: Standard Vented Heater - Common Vertical Vent Termination $>&=. &
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SECTION 6: VENTING Figure 6: Separated Combustion Heater - Vertical and Horizontal Vent Termination ( . >-+C . 7 :A B 9 #" ( . 1 2 " >-+C !@ . = :A B :A B $ 7 $ 7 / ( $&< Model Vent Diameter Terminal P/N
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7 ® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 8: Concentric Vertical and Horizontal Vent Termination - Separated Combustion Heater 7 $ $>&=' +=0 7 2*:!'!? 1 /=>,+ < 1 )# : + + + 2*: !!'!!? 4< 1 )# / - :$ 9 + ) =>,+ / 7 = ( :A B 9 #" ( 7 / $& !"
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SECTION 7: AIR SUPPLY SECTION 7: AIR SUPPLY 7.1 Separated Combustion Installation When installed as a separated combustion heater (UHAS), the air for combustion is drawn in from outside the building. It is important to ensure that there is adequate space around heater to provide air for the axial air distribution fan. 7.2 Unvented Installation It is important to ensure that there is adequate fresh air supply at all times for both combustion and heating requirements in accordance with local
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® COMBAT UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 8: GAS PIPING • Meter and service must be large enough to handle all the burners being installed plus any $%& other connected load. The gas pipe which feeds the system must be large enough to supply the required gas with a maximum pressure drop of 1/2" w.c. When gas piping is not included in the layout drawing, contact the local gas supplier. • An isolating valve and union connection should Fire Hazard ! '(
