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MAINTENANCE INSTRUCTIONS
DUCT FURNACE ASSEMBLY
3035443
ANSI Z83.8 (2016) – CSA 2.6 (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
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·
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Installation must be performed by a qualified installer, service agency or gas
supplier
This manual must be kept with the appliance for future reference.
HDR-USM-MAN-2016-E-1
OPERATION, SERVICE AND
HD 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
Heatco Inc.
50 Heatco Court
Cartersville, GA 30120
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Summary of Contents for heatco HD Series
- Page 1 OPERATION, SERVICE AND MAINTENANCE INSTRUCTIONS HD SERIES DUCT FURNACE ASSEMBLY MP5157 3035443 ANSI Z83.8 (2016) – CSA 2.6 (2016) Gas-Fired Duct Furnace WARNING: FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury, death or property damage.
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Page 2: Table Of Contents
Table of Contents Installation Requirements …….………………………………………..3 Installation …………………………………………………………………4 Combustion Air Supply ………………………………………………….4 Furnace Component Identification ………….……………………….5 Condensate Drains ……………………………………………………….5 Gas Supply Piping ……………………….……………………….……..6 Venting ………………………………………………………………….…..7 ……………………………….…………….….8 Operation and Safety ………………………………….………………..…….8 Start-up Inlet Gas Pressures …………………………………………..….8 Manifold Pressure & Adjustment ...…….………………..…8 ………………………………………………..………9 Gas Valve …………………………………………………..…10... -
Page 3: Installation Requirements
Installation Requirements All unit installations must be in accordance with the National Fuel Gas Code ANSI Z223.1 (NFPA 54) in the United States and Can/CGA-B149.1 Installation Code in Canada, and all other applicable local codes and ordinances. These requirements include but are not limited to: ·... -
Page 4: Installation
Installation Verify the following before placing the equipment into service: 1. Electrical supply matches the heater voltage marked on the duct furnace Rating Plate. 2. Gas supply provided matches the Gas Type marked on the duct furnace Rating Plate. 3. Furnace is installed in orientation marked on vestibule. Orientation is specific to airflow direction through the heating section of the unit. -
Page 5: Furnace Component Identification
Furnace Component Identification Figure 1 Modulating Comb Air Heater Electrical Valve Pressure Switch Control Panels Heater Gas Manifold Manifold Pressure Tap Main Gas Header Condensate Combination Drain Line Gas Valve Combustion Manual Gas Insulated Air Fan Shut-off Valve Vent Duct Condensate Drains A CPVC condensate drain line is provided and connected to the individual heaters. -
Page 6: Gas Supply Piping
Gas Supply Piping 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. In Canada, installation must be in accordance with CAN/CGA –B149.1 for Natural gas and B149.2 for propane units. -
Page 7: Venting
Venting Duct furnaces must be connected to a properly designed venting system to convey flue gases away from unit or outside of the heated space. See “Installation Requirements” for reference to applicable standards and codes. Outdoor Venting with Integral Flue Riser For outdoor applications, the factory designed Vent Riser / Vestibule Kit is recommended for venting of flue gases as shown in Figure 3. -
Page 8: Operation And Safety
WARNING ! Improper venting poses a Carbon Monoxide (CO) Hazard. Failure to provide a properly designed venting system may result in poor performance, unsafe operation and injury or death. Operating & Safety Instructions FOR YOUR SAFETY The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous. -
Page 9: Gas Valve
Manifold Pressure and Adjustment A pressure tap is provided in each furnace manifold for measuring the gas manifold pressure. Manifold pressure must be checked at start-up and during any service or maintenance. All control systems require a manifold pressure of 3.40 to 3.50 in. w.c. at maximum input on Natural Gas, and 10.0 in. w.c. on Propane Gas at maximum input rating. -
Page 10: Shutdown
Figure 5C – Honeywell V8944 Gas Valve Shutdown 1. Set thermostat (heat enable) to off position. 2. Turn off electrical supply to unit at disconnect switch. 3. Turn off manual gas supply. 4. Disconnect manifold and inlet pressure taps and re-install pipe plugs 5. -
Page 11: Furnace Components
1. The burner flame should be predominately blue in color and well defined and centered at the tube entry as shown in Figures above. Distorted flame or yellow tipping of natural gas flame, or a long yellow flame on propane, may be caused by lint and dirt accumulation inside burner or at burner ports, at air inlet between burner and manifold pipe, or debris in the main burner orifice. - Page 12 3. Check the appearance of the burner flame (See Figure 6A and 6B on Page 10). 4. Return heat controller to normal setting. 5. Refer to the equipment manufacturer’s instructions for annual maintenance procedures on the complete unit. Heatco Inc. 50 Heatco Court Cartersville, Ga. 30120...
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