Heatrex 240 Series Owner's Manual

Horizontal or vertical mounting industrial / commercial electric unit heater

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240 Series
Horizontal or Vertical Mounting
Industrial / Commercial Electric Unit Heater
Owner's Manual
This manual covers installation, maintenance and repair parts. Read carefully before attempting to
install, operate or service the 240 Series Unit Heater.
IMPORTANT INSTRUCTIONS
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE
Heatrex
425 HANLEY INDUSTRIAL COURT • ST. LOUIS, MO 63144
314-333-5500 • 800-243-8162 • FAX: 314-644-5332
www.heatrex.com •
sales@heatrex.com
HX24-2235-83-3

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Summary of Contents for Heatrex 240 Series

  • Page 1 Horizontal or Vertical Mounting Industrial / Commercial Electric Unit Heater Owner’s Manual This manual covers installation, maintenance and repair parts. Read carefully before attempting to install, operate or service the 240 Series Unit Heater. IMPORTANT INSTRUCTIONS SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE Heatrex 425 HANLEY INDUSTRIAL COURT •...
  • Page 2: Important Instructions

    10. The heater and discharge air are hot when in use. To avoid burns, do not let bare skin touch hot surfaces. WARRANTY WILL BE VOID IF INSTRUCTIONS ARE NOT FOLLOWED Page 2 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 3: Installation Instructions

    See the figures below for some typical airflow pattern arrangements: Page 3 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 4 10’ (3m) 15’ 20’ (6.1m) 25‘ (7.6m) 10.1 to 20 3/8 – 16 5 (127) 10.13 (257) (4.6m) 20.1 to 50 3/8 – 16 7 (178) 12.92 (328) Page 4 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 5 "Out for Maintenance" to prevent potential lethal shock hazards. 4. Confirm that the electrical power supply matches the nameplate voltage, phase, amperage and frequency rating of the heater to be connected. Page 5 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 6 FAN SWITCH WITH 24V RELAY (REMOTE OR BUILT ON) FAN VOLTS > 277 CONTROL F1 BOARD FAN SWITCH BUILT ON FAN VOLTS <= 277 FAN SWITCH RELAY Page 6 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 7: Electric Shock Hazard

    If the manual reset limit should start within approximately 1 to 2 control is suspected of causing heater non- minutes. function then the heater must be disconnected from the heater electrical Page 7 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 8 Perform the operation steps for the applicable temperature control option. b.) Place all switches in their normal operating position and place the unit heater in service. Page 8 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 9: Maintenance Instructions

    If they do not, one or more of the heating elements could be burned out and should be replaced. Page 9 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 10 “RESET”. It may be necessary 14. Perform steps in section titled OPERATION to to wait for the cutout to cool. verify heater performance. 4. Energize the heater electrical supply circuit. Page 10 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 11: Replacement Parts

    Pilot Light – Optional Plug Built On Thermostat – Optional Automatic Reset Cutout Thermostat Knob – Optional Fan Delay Cutout Disconnect Handle – Optional Manual Wire Grommet Page 11 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...
  • Page 12 Summer Fan Switch with 24V Relay – Built On 24Vac Control, Heater Supply Voltage > 277V 1024172 Summer Fan Switch with 24V Relay – Remote 24Vac Control Page 12 of 12 INDUSTRIAL / COMMERCIAL ELECTRIC UNIT HEATER 240 SERIES HX24-2235-83-3...

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