Mr. Heater HST45 Operating Instructions And Owner'S Manual Download Page 17

17

Operating Instructions and Owner’s Manual

Mr. Heater | Gas-Fired Low-Intensity Infrared Heater

Electrical Service Installation:  

System Requirements

The MHT tube heater requires a grounded three-prong electrical 
outlet to be installed within 18”of the rear surface of the heater’s 
burner box. It is recommended that the outlet for the heater be 
ceiling-mounted and should be on a dedicated circuit. 

DO NOT

 use 

an electrical extension cord to operate the heater. 

In order to control the heater thermostatically, it is necessary that 
the grounded three-prong electrical outlet be controlled with a 
on/off switch or a line voltage thermostat. Please consult with an 
electrician or follow all local electrical codes.

 

Heater Rating: 120 VAC, 60Hz, Single Phase, 1 Amp 

CAUTION

 Label all wires prior to disconnection when 

servicing controls. wiring errors can cause improper and 
dangerous operation. Verify proper operation after servicing.

The appliance, when installed, must be electrically grounded in 
accordance with local code, or in the absence of local codes, with 

the 

National Electrical Code (ANSI/NFPA 70) or Canadian Electrical 

Code (CSA 22.1)

, if an external electrical source is utilized.

Gas Service Installation 

Install Gas Supply Lines

A ½” gas supply connection is required as shown below. To check 
system pressure, a plugged 1/8” NPT tapping is required upstream 
of the manual gas shut-off valve supplied with the heater. 

Before connecting the heater to the supply system, verify that all 
high pressure testing of the gas piping has been completed. 

DO NOT HIGH pRESSURE TEST THE GAS pIpING WITH THE 
BURNER CONNECTED. 

Follow these instructions to ensure a safe gas supply system 

installation: 

1.   Support all gas piping with suitable pipe hanging materials. 

2.   Use wrought iron or wrought steel pipe and malleable iron 

fittings. The use of copper tube and brass fittings is acceptable 

 

WARNING Electrical Shock Hazard

 

  Plug heater into grounded three prong ceiling receptacle. 

Do not cut or remove the grounding prong from this plug. 
Do not use with an extension cord.  Failure to follow these 
instructions will result in death or electrical shock. 

 

ATTENTION Risque d’électrocution 

  Brancher le cordon du radiateur sur un socle à 3 broches 

et à la masse, situé au plafond. Ne pas sectionner ou 
retirer la broche de masse de cette prise. N’utilliser aucun 
cable de rallonge. Le non-respect de ces consignes peut 

entrainer mort ou electrocution. 

Grounding

 

The heater must be electrically grounded in accordance with the 
following codes: United States: Refer to National Electrical Code, 
ANSI/NFPA-70 – latest revision. Wiring must conform to the most 
current National Electrical Code and local ordinances. Canada: Refer 
to Canadian Electrical Code, CSA C22.1 Part 1– latest revision.

Summary of Contents for HST45

Page 1: ...any electrical switch do not use any phone in your building supplier If you cannot reach your gas supplier call the Fire Department Gas Fired Low Intensity Infrared Heaters approved for residential Ga...

Page 2: ...Echec pour se conformer aux precautions et aux in structions a fourni avec cet appareil de chauffage avoir pour resultat la mort blessure et la perte de propriete ou les dommages physiques serieuses d...

Page 3: ...the transfer of body oils from the hands to the surface of the reflector Vent Kit F102840 1 2 3 x 2 Pipe 26GA 2 1 36 x 3 B Vent 3 1 Gas Vent Top 3 4 1 Adj Wall Thimble 5 1 Storm Collar 6 1 3 Elbow 7...

Page 4: ...t energy downward to the space to be heated Heat Exchanger A U shaped tube through which the heated products of combustion pass Rear Movable Hanger Provides support for the heat exchanger and reflecto...

Page 5: ...ectrical Rating 120VAC 60Hz single phase 1 amp Connection 3 pin molded plug Gas Inlet Connection Connection Male NPT Gas Inlet Pressure The minimum inlet gas supply pressure for the purpose of input a...

Page 6: ...nting requirements for the MHT tube heater Specifies the national standards and applicable codes that apply to the gas electric and venting requirements Specifies the national standards and applicable...

Page 7: ...above the floor Minimum required safe distances to combustibles must be maintained from vehicles parked below the heater When installed over hoists the minimum required safe distances to combustible...

Page 8: ...as required Choose Location for Heater When selecting a suitable mounting location for the MHT tube heater it is important to consider the following 1 The heater must meet the minimum mounting height...

Page 9: ...ontal venting sections must slope away from the heater at a rate of per foot 5 The total length of vent pipe horizontal and vertical runs combined plus the length of the exterior termination must not...

Page 10: ...nted through the roof be sure to carefully review the roof option installa tion portion of this section Ensure that the selected mounting site will satisfy the measurement param eters vent length not...

Page 11: ...he gaskets The tube ends extend through the flanges to help with alignment 3 Using the four long and four short nuts from the bolt kit 02876 secure the tube set to the burner box As shown in the diagr...

Page 12: ...current CSA B149 1 Natural Gas and Propane Installation Code 2 In accordance with the current ANSI Z223 1 NFPA 54 National Fuel Gas Code A vent shall not terminate directly above a sidewalk or paved d...

Page 13: ...ustible wall refer to the latest edition of the National Fuel Gas Code or the authority having jurisdiction In regions of the country where prevailing winds are consistently higher than 40 mph it may...

Page 14: ...is is to be constructed of galvanized sheet metal or other approved noncombustible corrosion resistant material as indicated by state and or local codes 2 For horizontal venting the vent lengths may b...

Page 15: ...ength should be shortened or insulated g For vent specifications all of the following conditions must be met The maximum equivalent length of vent pipe should be carefully observed A safety switch in...

Page 16: ...e area opening shall be provided below the heater for each 1 000 Btu hr of heater input When outside air is used the opening below the heater shall be one square inch of free area for each 4 000 Btu h...

Page 17: ...hown below To check system pressure a plugged 1 8 NPT tapping is required upstream of the manual gas shut off valve supplied with the heater Before connecting the heater to the supply system verify th...

Page 18: ...ns and burrs 3 Use LP resistant joint compound on all threads 4 Check the pipe and tube connections for leaks before placing heating equipment into service When checking for gas leaks use a soap and w...

Page 19: ...will then occur 8 Periodic visual check of burner flame while unit is in operation through sight glass in bottom of unit Section 6 MAINTENANCE Pre Season Maintenance Heater area to be kept clear and f...

Page 20: ...itch does not operate Igniter spark gap incorrect Try This Unplug heater power cord from the electrical outlet wait for a minimum of five seconds Plug heater cord back into outlet Unplug heater power...

Page 21: ...nlet pressure requirements contact the gas company Check for 24V across valve terminals Check Shutoff On Valve IF NO Check wiring between the ignition module and the valve Repair replace wires as requ...

Page 22: ...ters on the illustrations are keyed to the associated parts list I B A C J F H G D E ITEM PART NUMBER DESCRIPTION HST 35 HST 45 A 02808 Spark Electrode 1 1 B 02837 Ignition Wire 1 1 05795 Orifice MHT...

Page 23: ...CHASE REF ITEM DESCRIPTION A F202850 MHT 45NG Burner Box for F208850 F202851 MHT 45LP Burner Box for F202851 B F106250 MHT45 Tube Set Long C 06014 Hanger D 06016 Hanger Clamp E 06008 9 MHT 45 Reflecto...

Page 24: ...the claim Also supply us with the purchase date and the name and address of the dealer from whom you purchased our product The foregoing is the full extent of the responsibility of the Company There a...

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