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heatco HM SERIES Operation, Service And Maintenance Instructions

Duct furnace module
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MAINTENANCE INSTRUCTIONS
DUCT FURNACE MODULE
3035443
ANSI Z83.8 (2016) – CSA 2.6M (2016) Gas-Fired Duct Furnace
!
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury,
death or property damage.
Be sure to read and understand the installation, operation and service
instructions in this manual.
Improper installation, adjustment, alteration, service or maintenance can
cause serious injury, death or property damage.
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
·
·
·
·
·
Installation must be performed by a qualified installer, service agency or gas
supplier
This manual must be kept with the appliance for future reference.
Heatco Inc.
50 Heatco Court
Cartersville, GA 30120
OPERATION, SERVICE AND
HM and HH SERIES
WARNING:
Do not try to light any appliance
Do not touch any electrical switch; do not use any phone in your building
Leave the building immediately
Immediately call your gas supplier from a phone remote from the
building. Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
.
MP5157
HM-USM-MAN-6-2016-E

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Summary of Contents for heatco HM SERIES

  • Page 1 If you cannot reach your gas supplier, call the fire department. Installation must be performed by a qualified installer, service agency or gas supplier This manual must be kept with the appliance for future reference. Heatco Inc. 50 Heatco Court Cartersville, GA 30120 HM-USM-MAN-6-2016-E...

  • Page 2: Table Of Contents

    The information provided in this manual applies to the furnace module installed as part of a manufactured package system and to its operation, maintenance, and service. Refer to the system manufacturer’s instructions for information related to all other components. Table of Contents Installation…………………………………………………………………..3 Combustion Air Supply …………………………………………………..3 Furnace Module Component Identification………………………..….4...

  • Page 3: Installation

    All electrical equipment must be grounded and wired be in accordance with the National Electric Code (ANSI/NFPA 70) in the United States, and the Canadian Electric Code (CSA C22.1), in Canada Installation Verify the following before placing the equipment into service: 1.

  • Page 4: Furnace Module Component Identification

    Indoors, locate heating unit to insure an adequate supply of fresh air to replace air used in the combustion and ventilation process. Install air openings that provide a total free area in accordance with the National Fuel Gas Code (ANSI Z223.1 or NFPA 54) in the United States or CAN/CGA B-149 Installation Code in Canada. Condensate Drains In applications operating with modulating controls, temperature rises below 40 oF, or with outside make-up air, some condensation may occur in the heating cycle.

  • Page 5: Gas Supply Piping And Connections

    Flame Rollout Two-Stage Switch Gas Valve Flame Sensor Gas Inlet Connection Hi Limit Switch Manifold Pressure Tap Induced Draft Fan Assy. Draft Inducer Motor Spark Igniter Motor Support Bracket Wire Harness to JB/Ignition Control Condensate Drain Gas Supply, Piping and Connections Fitting Installation of piping must conform with local building codes and ordinances, or in the absence of local codes with ANSI Z223.1 the National Fuel Gas Code.

  • Page 6: Venting Outdoor Installations

    A drip leg (sediment trap) and a manual shut off valve must be provided immediately upstream of the gas control on the heating unit. To facilitate servicing of unit, installation of a union is recommended. (See Fig. 3) Figure 3 The duct furnace module gas piping was leak tested prior to shipping.

  • Page 7: Venting Indoor Installations

    Where sufficient clearance for proper horizontal venting cannot be provided, or in jurisdictions requiring a 4 foot separation between flue gas discharge and combustion air inlet, flue gases need to be vented vertically. Refer to Fig. 5 for acceptable venting method. Vent pipe must terminate at least 1 ft.
  • Page 8 Dampers must not be used in vent piping runs. Spillage of flue gases into the occupied space could result. Vent connectors serving Category 1 heaters must not be connected into any portion of a mechanical draft system operating under positive pressure. 6 –...

  • Page 9: Separated Combustion

    Figure 7 – Indoor Horizontal Venting 5 ft. (1.52 m) Min. 50 ft. (15.35 m) Max. Equiv. Length 1 ft. Min. 1/4in. (6mm) pitch per 1ft. (305mm) horizontal run Listed Vent Terminal 3 ft. Min.(0.91m) above See Table 1 for Condensate Highest Snowfall vent diameter...

  • Page 10: Start-Up

    6 ft. (1.8 m) Min. Listed Horizontal To Wall or Vent Terminal(s) Adjoining Building Combustion Air Inlet 2.5 ft. (0.75m) Exhaust Vent Min. 18 in. (0.46m) Min. (* See Note) 18 in. * Note: Provide sufficient (0.3m) Roof Deck clearance (height) to exceed Min.

  • Page 11: Manifold Pressure Adjustment

    1. Turn thermostat or temperature controller to its lowest setting 2. Turn off gas supply at the manual shut-off valve 3. Turn off power to the unit at the disconnect switch. 4. Remove access panel or open door to unit vestibule housing the gas heater. 5.

  • Page 12: Burner Flames

    Figure 10B – White Rodgers 36H Gas Valve 1/8” NPT Inlet Pressure Tap Manifold Pressure Adjustment Manual Shut-off Remove Brass cap and adjust with plastic screw Electrical Connection Block Figure 10C – Honeywell V8944 Gas Valve Burner Flames Prior to completing the start-up, check the appearance of the main burner flame. See Figures below for flame characteristics of properly adjusted Natural gas systems.

  • Page 13: Shutdown

    Burner Flame @ High Fire 3.5” w.c. Manifold Burner Flame @ Start-up 1.2” w.c. Manifold Pressure Draft Inducer – High Speed Pressure Draft Inducer – High Speed 1. The burner flame should be predominately blue in color and well defined and centered at the tube entry as shown in Figures above.
  • Page 14 used, monitoring high and low speed pressures. The air pressure switches have fixed settings and are not adjustable. Rollout Switch (Manual Reset) The duct furnace is equipped with manual reset rollout switch(es) in the event of burner flame rollout. The switch will open on temperature rise and shut-off gas supply through the ignition control module.
  • Page 15 3. Check the appearance of the burner flame (See Figure 11A and 11B on Page 12). 4. Be sure circulating air fan is operating and verify proper airflow through duct furnace 5. Return thermostat or heat controller to normal setting. Heatco Inc. 50 Heatco Court Cartersville, Ga. 30120...

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Hh series

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