Nortek MG1 Series Installation Instructions Manual
  1. Manuals
  2. Brands
  3. Nortek Manuals
  4. Furnace
  5. MG1 Series
  6. Installation instructions manual

Nortek MG1 Series Installation Instructions Manual

Downflow, direct vent (sealed combustion) forced air gas furnaces
Hide thumbs
Table of Contents

Advertisement

Quick Links

MG1 Series
INSTALLATION INSTRUCTIONS
Downflow, Direct Vent (Sealed Combustion)
Forced Air Gas Furnaces
For installation in:
• Manufactured Homes
• Recreational Vehicles, Park Models, &
Manufactured Buildings
• Modular Homes / Buildings
WARNING / AVERTISSEMENT
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly could
result in serious injury, death or property damage.
• Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
• Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
RISQUE D'INCENDIE OU D'EXPLOSION
• Le non-respect des avertissements de sécurité pourrait
entraîner des blessures graves ou des dommages
matériels importants.
• L'installation et l'entretien doivent être effectués par
un installateur qualifié, un organisme de service ou le
fournisseur de gaz.
• N'entreposez pas ni n'utilisez de l'essence ni d'autres
vapeurs ou liquides inflammables dans le voisinage de
cet appareil, ni de tout autre appareil.
WHAT TO DO IF YOU SMELL GAS
• 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
neighbors phone. Follow the gas suppliers
instructions.
• If you cannot reach your gas supplier, call the fire
department.
QUE FAIRE S'IL Y A UNE ODEUR DE GAZ
• N'essayez d'allumer aucun appareil.
• Ne touchez à aucun interrupteur électrique; n'utilisez
aucun téléphone dans le bâtiment.
• Évacuez l'immeuble immédiatement.
• Appelez immédiatement le fournisseur de gaz en employant
le téléphone d'un voisin. Respectez les instructions du
fournisseur de gaz.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A
SAFE PLACE FOR FUTURE REFERENCE.
CAUTION
HUD Manufactured Home Construction and Safety
Standards (3280.714) prohibit the use of noncertified
air conditioning or heat pump equipment with
this furnace. It is strongly recommended that
manufactured housing air conditioning components
from Nortek Global HVAC be selected to provide
a matched system specifically designed to meet
these requirements.
The cutting, splicing or modifying of any internal
electrical wiring may void product warranties and
create a hazardous condition. Failure to comply
with these standards could also provide inadequate
heating or cooling performance and cause structural
damage to a manufactured home.
Please contact your local distributor for help. A
directory of Nortek Global HVAC factory authorized
servicers is located in the furnace homeowner
packet.
Reference: HUD Manufactured Home Construction
and Safety Standards 3280.714.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MG1 Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Nortek MG1 Series

Summary of Contents for Nortek MG1 Series

  • Page 1 • Leave the building immediately. from Nortek Global HVAC be selected to provide • Immediately call your gas supplier from a a matched system specifically designed to meet neighbors phone. Follow the gas suppliers these requirements.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION ..... 3 STARTUP & ADJUSTMENTS ........20 Operating Instructions (Direct Ignition Furnaces) ..20 REQUIREMENTS & CODES ........4 How to Shut Off Gas - Direct Ignition Models..21 Verifying Input Rate ..........21 GENERAL INFORMATION ........

  • Page 3: Important Safety Information

    IMPORTANT SAFETY INFORMATION AVERTISSEMENT : Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and N’installez pas cette fournaise si l’une de ses should not be ignored. WARNING indicates a potentially pièces a été immergée dans de l’eau. Une hazardous situation that if not avoided, could result in fournaise endommagée par une inondation personal injury or death.

  • Page 4: Requirements & Codes

    REQUIREMENTS & CODES General Installation • US: Current edition of the NFGC and the NFPA 90B. For • This furnace must be installed in accordance with copies, contact the National Fire Protection Association Inc., these instructions, all applicable local building codes Batterymarch Park, Quincy, MA 02269;...
  • Page 5 installed above Clearance furnace door frame to Furnace to access roof jack Cabinet Nearest 2. For direct-vent appliances, mechanical vent heating b.) The (CO) detector shall: Wall or Partition appliances or domestic hot water equipment where the • Be located in the room that houses the appliance or bottom of the vent terminal and the air intake is installed equipment;...

  • Page 6: General Information

    This furnace must be installed with ample clearance for Applications easy access to the air filter, blower assembly, burner MG1 series gas furnaces are classified as a Category assembly, controls, and vent connections. See Figure I (Catégorie I) appliance and listed as a direct vent...

  • Page 7: Circulating Air Requirements

    CIRCULATING AIR REQUIREMENTS least 235 in . At least one register should be located where it is not likely to be covered by carpeting, boxes WARNING: and other objects. • Materials located in the return duct system must have a flame spread classification of 200 or less.
  • Page 8 20" 14 1/2" 2 3/4" FLOOR OPENING REAR WALL OF CLOSET OR ALCOVE “X” 2 1/4" SUPPLY AIR DUCT FLOOR CUT-OUT FLOOR FOR STANDARD CAVITY DUCT CONNECTORS Figure 9. Floor Cavity CUT-OUT FOR 1 3/4" OPTIONAL 3/4" COOLING COIL 1 3/4" ALT FUEL-LINE 2"...

  • Page 9: General Information

    • The furnace must be installed upstream from a refrigeration system. • MG1 series gas furnaces are certified for use on wood flooring or supports, but must be installed on top of a duct connector. This factory supplied accessory must...

  • Page 10: Alternate Attachment Method

    5” diameter inner vent pipe may be used with all models NOTE: Requirements for sealing ductwork vary of MG1 Series gas furnaces. from region to region. Consult with local codes for F = Flat Flashing: flexes from 0/12 to 1/12 roof slope.
  • Page 11 APPROX. LENGTH MODEL NUMBER BELOW FLASHING ROOF JACK CROWN (F,S)AW1523-(0,2,4)(A,S) 15” - 23” SLANT DECK FLASHING (F,S)AW2135-(0,2,4)(A,S) 21” - 35” (F,S)AW2747-(0,2,4)(A,S) 27” - 47” (F,S)AW3563-(0,2,4)(A,S) 35” - 63” (F,S)AW5195-(0,2,4)(A,S) 51” - 95” "X" (SEE TABLE 5) NOTE: Not all models are available. Check with your local distributor CEILING CAVITY for available models.

  • Page 12: Locating & Cutting Roof / Ceiling Openings

    • If the roof jack crown is covered or blocked with snow, the furnace will not operate properly. If the home is located Secure roof jack with appropriate fasteners in regions where snow accumulation exceeds 7” (HUD after connecting to snowload zones) use an external roof jack extension furnace (p/n 901937).

  • Page 13: Installing Transit-Mode Venting System (Before Home Is Moved To Site)

    ELECTRICAL INFORMATION NOTE: Upper roof jack crown to be stored in a prominent location inside manufactured home until on-site installation. WARNING: Installing Transit-Mode Venting System ELECTRICAL SHOCK, FIRE OR (Before Home is Moved to Site) NOTE: For transit purposes, the transit kit (P/N 903838) EXPLOSION HAZARD should be installed before home is moved to site.

  • Page 14: Connecting Power Supply Wires

    IMPORTANT NOTE: On-Off Refer to the wiring diagram inside the control box Thermostat Wires Switch cover or Figure 32 (page 27) Figure 33 (page 28) for the wiring of your particular unit. Any other wiring Furnace methods must be acceptable to authority having Control Box jurisdiction.

  • Page 15: Low Voltage Wiring

    FURNACE FURNACE CABINET NOMINAL MINIMUM MAXIMUM MAXIMUM MAXIMUM MINIMUM MODEL INPUT WIDTH ELECTRICAL OPERATING OPERATING FURNACE FUSE OR CIRCUIT CIRCUIT NUMBER- (BTUH) (IN.) SUPPLY VOLTAGE VOLTAGE AMPERES BREAKER AMPS* AMPACITY MG1E-056 56,000 19 3/4 115-1-60 11.8 MG1E-070 70,000 19 3/4 115-1-60 11.8 MG1E-077...

  • Page 16: Fuel Supply & Piping

    FUEL SUPPLY & PIPING This furnace may be installed with left, right, or bottom gas entry. When connecting the gas supply, provide clearance WARNING: between the gas supply line and the entry hole in the furnace casing to avoid unwanted noise and/or damage FIRE OR EXPLOSION HAZARD to the furnace.

  • Page 17: Leak Check

    • The main gas valve and main power disconnect to The gas supply to your home will either be Natural Gas the furnace must be properly labeled by the installer or L.P. Your furnace is factory equipped to operate on in case emergency shutdown is required.

  • Page 18: Flue Gas Sampling

    After the gas piping to the furnace is complete, all This furnace is shipped from the factory with orifices and connections must be tested for gas leaks. This includes all gas regulator settings for natural gas operation at sea fittings, pipe connections at the main gas valve, emergency level altitudes.

  • Page 19: Conversion To Propane (Lp) Gas

    Conversion to Propane (LP) Gas 9. Reconnect the gas piping and electrical wires to the gas valve. 10. Open the manual shut-off valve and follow the Operating WARNING: Instructions on page 20. This furnace was shipped from the factory Measuring the Supply Gas Pressure equipped to operate on natural gas.

  • Page 20: Startup & Adjustments

    10. Disconnect the manometer or pressure gauge. WARNING: 11. Remove the 1/8 NPT fitting and reinstall the manifold pressure plug. NOTE: To prevent cross threading, Before placing the furnace in service, it must be hand tighten the plug first then tighten with 3/16 Allen checked to ensure it is equipped for the type of gas wrench.

  • Page 21: How To Shut Off Gas - Direct Ignition Models

    5. Set the thermostat MODE the ON position. as close to the furnace as possible. To avoid false 6. Turn the gas valve ON. Push in and turn gas control readings, the thermometer on the supply air side must be knob counter-clockwise to ON (Figure 29).

  • Page 22: Operating Sequence

    OPERATING SEQUENCE CONTROL MODULE STATUS INDICATORS - MG1 SERIES Direct Ignition Furnaces RED LED STATUS 1. On a call for heat, the thermostat contacts close, INDICATOR supplying 24 VAC between terminals C and W of the Steady ON Control OK control module.
  • Page 23 Combustion Blower Runs, Ignitor Heats Up Burner Flame Without Motor Running But No Flame • Gas valve stuck open, check gas valve for proper operation (replace if necessary) and inspect heat 1. Defective pressure switch - check air tube and electrical exchanger.

  • Page 24: Furnace Controls & Functions

    OPTIONAL ACCESSORIES FURNACE CONTROLS & FUNCTIONS Necessary when the furnace is used with packaged Furnace On / Off Switch: This switch turns electrical air conditioners power to the furnace on and off. The switch must be set If an air conditioner is installed that does not use the furnace in the ON position for the furnace to operate.

  • Page 25: Figures & Tables

    FIGURES & TABLES Gas Information GAS FLOW RATES GAS FLOW RATES (CUBIC FEET PER HOUR) (CUBIC FEET PER HOUR) CUBIC FEET PER CUBIC FEET PER TIME FOR TIME FOR REVOLUTION OF GAS METER REVOLUTION OF GAS METER ONE REVOLUTION ONE REVOLUTION (SECONDS) (SECONDS) 1,800...

  • Page 26: Natural Gas - High Heating Value

    LOCAL HEATING VALUES FOR NATURAL GAS ALTITUDE BTU PER CUBIC FOOT ABOVE SEA LEVEL 1,000 1,050 HIGH HIGH HIGH 2,000 FT 3,000 FT HIGH HIGH HIGH HIGH HIGH HIGH HIGH 4,000 FT 5,000 FT HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH...

  • Page 27: Electrical Information

    Electrical Information Figure 32. Nordyne/UTEC Board Wiring Diagram...
  • Page 28 EAC-H 120V HUM-H CIRC-H XFRM-H LINE-H Figure 33. Emerson Board Wiring Diagram...

  • Page 29: Airflow Data

    Airflow Data MG1E-056F1A(A,B)M1 EXTERNAL STATIC PRESSURE (IN. W.C.) MODEL NAME/ MOTOR HEATING INPUT SPEED RISE RISE RISE RISE RISE 5 - High 4 - Alternate MG1E-056F1AAM1 3 - Med-Hi* 56,000 BTU/Hr 2 - Med-Low 1 - Low MG1E-070F1A(A,B)M1 EXTERNAL STATIC PRESSURE (IN. W.C.) MODEL NAME/ MOTOR HEATING INPUT...
  • Page 30 MG1E-056F1AAM1 EXTERNAL STATIC PRESSURE (IN. W.C.) MODEL NAME/ MOTOR HEATING INPUT SPEED 5 - High* 1,524 1,491 1,458 1,421 1,385 1,348 1,308 1,270 4 - Alternate 1,199 1,160 1,122 1,080 1,037 MG1E-056F1AAM1 3 - Med-High 1,013 56,000 BTU/Hr 2 - Med-Low 1 - Low MG1E-070F1AAM1 EXTERNAL STATIC PRESSURE (IN.

  • Page 32: Installation Checklist

    Vent free from restrictions? Filter(s) secured in place? Filter(s) clean? Flue connections tight? Is there proper draft? Specifications & illustrations subject to change without notice or incurring obligations (07/22). 10436350 O’Fallon, MO, © Nortek Global HVAC LLC 2022. All Rights Reserved. (Replaces 1034914B)

This manual is also suitable for:

Mg1eMg1e-056Mg1e-070Mg1e-077Mg1e-090

Table of Contents

Save PDF