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OPERATING INSTRUCTIONS AND OWNER'S MANUAL
MR. HEATER
MHU 45
MHU 75
COMPACT UNIT HEATER
WARNING:
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual. For assistance or
additional information consult a qualified installer, service agency or the gas supplier.
WHAT TO DO IF YOU SMELL GAS
Open Windows
DO NOT try to light any appliance.
DO NOT use electrical switches.
DO NOT use any telephone in your house. Immediately call your local gas supplier from a
neighbor's telephone. Follow the gas supplier's instructions.
Do not touch any electrical switch; do not use any phone in your building.
Installation and service must be performed by a qualified installer, service agency or the gas
supplier.
If you cannot reach your gas supplier, call the Fire Department.
FOR YOUR SAFETY:
Do not store or use gasoline or other flammable vapors and liquids in the vicin-
ity of this or any other appliance.
WARNING: If the information in these instructions are not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
READ INSTRUCTIONS CAREFULLY: Read and
follow all instructions. Place instructions in a
safe place for future reference. Do not allow
anyone who has not read these instructions to
assemble, light, adjust or operate the heater.
ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
Starting Serial Numbers - Page 2
HEATSTAR
HSU 45
HSU 75
10/09 #60016

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Sommaire des Matières pour Enerco Mr. Heater MHU 45

  • Page 1 WARNING: If the information in these instructions are not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000 10/09 #60016...
  • Page 2 Starting Serial Numbers MHU45NG 260045-09001001 MHU45LP 260145-09001001 MHU75NG 260775-09001001 MHU75LP 260875-09001001 HSU45NG 160245-09001001 HSU45LP 160345-09001001 HSU75NG 160775-09001001 HSU75LP 160975-09001001 enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 3 CHeCK ................1 1 START-UP OPERATION ............. 1 1 HeATING SeQUeNCe oF oPeRATIoN ........12 IGNITIoN CoNTRol leD ............12 ADJUSTMeNTS................ 12 SeRVICe .................. 13 WIRING DIAGRAM ..............14 PARTS lIST ................16 WARRANTY ................18 enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 4 Gas Piping Connections Tight & Leak-Tested? __________________________________ THeRMoSTAT Motor Amps _____________________________________________________________ Calibrated? _____________________________________________________________ Furnace Btu Input ________________________________________________________ Heat Anticipator Properly Set? line Pressure ____________________________________________________________ level? _________________________________________________________________ Manifold Pressure w.c. ____________________________________________________ enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 5 Heaters should be located so as to be protected from damage from aircraft or other appliances needed for servicing of aircraft. Refer to requirements of the enforcing authorities. enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 6 Adequate facilities for supplying air for combustion and ventilation must be provided in accordance with the latest edition of section 5.3, Air for Combustion and Ventilation, of the National Fuel enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 7 CAN/CGA-B149 Installation Code. The vent must extend at relief devices as specified in the Canadian B149.1, Natural Gas least 5’ (1.6m) above the highest connected equipment flue Installation Code. collar. enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 8 NOT INCLUDINg CAp FOR TERMINATION. REFER TO TABLE DRAIN LOOp wITH wATER 2 FOR MAXIMUM LENgTH AND NUMBER OF ELBOwS. TRAp (TO CONDENSATE DRAIN) COMMON VENTINg NOT ALLOwED wHEN HORIZONTALLY VENTINg THE UNIT HEATER FIgURE 3 enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 9 Follow the lighting instructions. Place the appliance being Insulation for the flexible vent pipe must be an encapsulated inspected in operation. Adjust thermostat so appliance will fiberglass sleeve recommended by the flexible vent pipe operate continuously. manufacturer. enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 10 Unit may have multiple power ISOLATE gAS VALVE supplies. wARNINg Danger of explosion and fire. Can UNIT HEATER cause injury or product or property damage. You must follow these instructions exactly. FIgURE 9 enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 11 1 1. If unit does not light first time (gas line not fully purged) it CAUTION Do NoT use matches, candles, flame or other sources will attempt up to two more ignitions before locking out. of ignition to check for gas leaks. enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 12 1. Check gas line pressure with unit firing at maximum rate. A place. enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 13 Use a small brush to clean blower CAUTION Turn off gas and electrical power to unit before wheel. performing any maintenance or service operations on this unit. enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 14 T1 24V HSU75LP HSU75NG YELLOW 120V 60006 REV. LINE VOLTAGE FIELD INSTALLED CLASS II 24 VAC FIELD INSTALLED DENOTES OPTIONAL COMPONENTS BLACK WHITE BLWR HEAT COOL EQUIPMENT LADDER DIAgRAM GROUND enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 15 Check flue passage and outlet. REpAIR pARTS When ordering repair parts include the complete unit model number listed on the unit rating plate. For example: MHU45/75 and HSU45/75. THIS COLUMN INTENTIONALLY LEFT BLANK enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 16 Natural gas to Liquid propane MHU/HSU45 45,000 BTU ...... 60067 MHU/HSU75 75,000 BTU ...... 60069 Liquid propane to Natural gas MHU/HSU45 45,000 BTU ...... 60066 MHU/HSU75 75,000 BTU ...... 60071 enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 17 Mr. Heater / HeatStar • Compact Unit Heater • Model # MHU45/75 HSU45/75 enerco | Compact Unit Heater operating Instructions and owner’s Manual...
  • Page 18 This Warranty gives you specific legal rights, and you may have other rights which vary from state to state. enerco Group, Inc. reserves the right to make changes at any time, without notice or obligation, in colors, specifications, accessories, materials and models.

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