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MrCool Signature Series Owners & Installation Manual
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MrCool Signature Series Owners & Installation Manual

Warm air gas furnace
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The Signature Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician.
Please read this manual carefully before installation and keep it for future reference.
Owner & Installation
Manual
Signature Series
MGD80*SE*XA Warm Air Gas Furnace
The Signature Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician.
Please read this manual carefully before installation and keep it for future reference.

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Summary of Contents for MrCool Signature Series

  • Page 1 The Signature Series is NOT designed for amateur installation. Installation SHOULD be performed by an authorized technician. Please read this manual carefully before installation and keep it for future reference. Owner & Installation Manual Signature Series MGD80*SE*XA Warm Air Gas Furnace The Signature Series is NOT designed for amateur installation.

  • Page 2: Table Of Contents

    This manual must be left with the homeowner for future reference. Table of Contents Unit Dimensions Duct System Parts Arrangement MGD80*E Gas Furnace Safety Information WARNING CAUTION *P507332-02C* Manufactured By MRCOOL, LLC Hickory, KY 42051 (P) 507332-02C Save these instructions for future reference 507332-02C mrcool.com Page 1 of 35...

  • Page 3: Unit Dimensions

    9-1/8 (232) Right 6-1/2 (165) 6-9/16 (157) Left Either Side Supply Air Supply Air (19) (19) 19-1/4 (489) (19) Front View Side View Capacity 045-3 14-1/2 13-3/8 4-3/4 070-3 090-4 17-1/2 16-3/8 6-1/4 110-5 19-7/8 19-1/2 Page 2 of 35 mrcool.com 507332-02C...

  • Page 4: Parts Arrangement

    Parts Arrangement BLOWER ASSEMBLY CONTROL FLUE CHASE INTERNAL FLUE PIPE ASSEMBLY BURNER BOX ASSEMBLY CABINET HEAT EXCHANGER COMBUSTION AIR INDUCER VALVE ROLLOUT ACCESS LOCATED INSIDE PANEL BURNER BOX Figure 1. 507332-02C mrcool.com Page 3 of 35...

  • Page 5: Mgd80*E Gas Furnace

    NOTE: In Direct Vent installations, combustion air is taken Non-Direct Vent installations, combustion air is taken from Shipping and Packing List 2 - Screws 3 - Wire nuts Clearances 1 - Wire tie NOTE: Installed Locations Page 4 of 35 mrcool.com 507332-02C...
  • Page 6 DO NOT USE THE UNIT FOR CONSTRUCTION HEAT UNLESS ALL OF THE FOLLOWING CRITERIA ARE MET: Figure 2. Heating Unit Installed Parallel to Air Handler Unit Quincy, MA 02269 EQUIPMENT EXPERIENCE PREMATURE NOTE: COMPONENT FAILURE AS A RESULT OF FAILURE TO 507332-02C mrcool.com Page 5 of 35...
  • Page 7 THE POLICIES AND CODES OF ALL REGULATING General WARNING • • • • • • • • • • • NOTE: • • • • • • • • Combustion, Dilution & Ventilation Air Page 6 of 35 mrcool.com 507332-02C...
  • Page 8 NOTE: Figure 3. Inside Air from Inside Air from Outside 507332-02C mrcool.com Page 7 of 35...
  • Page 9 NOTE: Figure 6. Outside NOTE: Setting Equipment Figure 4. Outside WARNING (Inlet Air from Crawlspace & Outlet Air to Ventilated Attic) NOTE: NOTE: Figure 5. Outside (All Air through Ventilated Attic) Page 8 of 35 mrcool.com 507332-02C...
  • Page 10 Figure 9. Figure 7. Return Air WARNING Type of Vent Type C Type B Connector *Front Back Sides 0† See Figure 10 0‡ 0‡ Figure 8. Clearances 507332-02C mrcool.com Page 9 of 35...
  • Page 11 NOTE: Installation on Combustible Flooring See Figure 11 Installation on Cooling Coil Cabinet See Figure 12 NOTE: CAUTION Front to Rear Side to Side Cabinet Catalog Width Number 11M60 18-3/4 11M61 22-3/4 Table 2. Page 10 of 35 mrcool.com 507332-02C...

  • Page 12: Duct System

    Filters Duct System Society of Heating, Refrigerating and Air Conditioning Figure 12. NOTE: Supply Air Plenum Return Air Plenum NOTE: Figure 13. Venting Figure 14. 507332-02C mrcool.com Page 11 of 35...
  • Page 13 IMPORTANT NOTE: Figure 15. Vent Connection Venting Using a Masonry Chimney IMPORTANT WARNING IMPORTANT Page 12 of 35 mrcool.com 507332-02C...
  • Page 14 Refer to the capacity requirements shown in the provided venting tables. General Venting Requirements Figure 16. Masonry Chimney • • NOTE: Figure 17. Common Venting Using Tile Lined Interior Masonry Chimney and Combined Vent Connector 507332-02C mrcool.com Page 13 of 35...
  • Page 15 Connector Diameter Connector Length inches (mm) feet (m) 3 (76) 4 (102) 5 (127) 6 (152) 7 (178) Table 3. Page 14 of 35 mrcool.com 507332-02C...
  • Page 16 Capacity of Type B Double Wall Vents with Type B Double Wall Connectors Serving a Single Category I Appliance Height Lateral 3 inch 4 inch 5 inch 6 inch Appliance Input Rating in Thousands of Btu per Hour (feet) (feet) NOTE Table 4. 507332-02C mrcool.com Page 15 of 35...
  • Page 17 Capacity of Type B Double Wall Vents with Single Wall Metal Connectors Serving a Single Category I Appliance Height Lateral 3 inch 4 inch 5 inch 6 inch Appliance Input Rating in Thousands of Btu per Hour (feet) (feet) NOTE Table 5. Page 16 of 35 mrcool.com 507332-02C...
  • Page 18 Appliance Input Rating in Thousands of Btu per Hour (feet) FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT Table 7. 507332-02C mrcool.com Page 17 of 35...
  • Page 19 Appliance Input Rating in Thousands of Btu per Hour (feet) FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT Table 9. Page 18 of 35 mrcool.com 507332-02C...

  • Page 20: Caution

    Removal of the Furnace from Common Vent Gas Piping CAUTION WARNING CARBON MONOXIDE POISONING HAZARD Gas Supply IMPORTANT NOTE: 507332-02C mrcool.com Page 19 of 35...
  • Page 21 GAS VALVE MANUAL (with manual MAIN SHUT-OFF (with manual MAIN SHUT-OFF VALVE shut-off valve) VALVE shut-off valve) GROUND JOINT UNION GROUND JOINT UNION DRIP LEG DRIP LEG FIELD PROVIDED AND INSTALLED ONLY NOTE: Figure 18. Page 20 of 35 mrcool.com 507332-02C...
  • Page 22 Leak Check Electrical ELECTROSTATIC DISCHARGE (ESD) Precautions and Procedures NOTE: CAUTION CAUTION IMPORTANT Figure 20. Figure 19. Figure 21. 507332-02C mrcool.com Page 21 of 35...
  • Page 23 NOTE: • • • • Thermostat NOTE: Accessory Terminals * Note: Figure 22. Condensing Unit Thermostat Designations Indoor Blower Speeds Page 22 of 35 mrcool.com 507332-02C...
  • Page 24 E045A3 E070B3 E090B4 E110C5 Figure 23. Wiring Diagram 507332-02C mrcool.com Page 23 of 35...
  • Page 25 Figure 24. Typical Field Wiring Diagram Terminal Designations 120 HUM LINE XFMR CIRC COOL HEAT PARK NEUTRALS 24 COM HUM 24 BLOWER OFF DELAY RED LED RECALL BUTTON Figure 25. Integrated Control (Automatic Hot Surface Ignition System) Page 24 of 35 mrcool.com 507332-02C...
  • Page 26 Gas Valve Shown in “ON” Position WARNING WARNING Figure 26. BEFORE LIGHTING NOTE: Placing the Furnace into Operation Turning Off Gas to Unit WARNING Failure To Operate Gas Valve Operation See Figure 26 STOP! 507332-02C mrcool.com Page 25 of 35...
  • Page 27 See Figure 27 NOTE: Supply Pressure Measurement Manifold Pressure Measurement 5 SEC Blower Trial for Post Ignitor Warm-up Pre-Purge “On” Delay Ignition Purge Demand Ignitor Gas Valve Indoor Blower Figure 27. Heating Sequence of Operation Page 26 of 35 mrcool.com 507332-02C...
  • Page 28 (in w.c.) 51W01 11K50 11K50 11K50 11K45 51W01 11K50 11K50 11K50 11K45 74W89 51W01 11K50 11K50 11K50 11K45 74W60 51W01 74W60 11K50 11K50 11K50 11K45 NOTE NOTE Table 13. Manifold Pressure Settings and Pressure Switch 507332-02C mrcool.com Page 27 of 35...
  • Page 29 Thermostat Heat Anticipation IMPORTANT NOTE: Fan Control Electrical Blower Speeds NOTE: Figure 28. Heat Fan Off Time in Seconds Constant Torque Motor Electronic Ignition Page 28 of 35 mrcool.com 507332-02C...
  • Page 30 1725 1495 1390 1320 1145 1695 1470 1340 1280 1105 1660 1425 1290 1225 1040 1615 1395 1250 1185 1005 1570 1360 1210 1145 1545 1295 1165 1085 1265 1120 1040 1215 1080 1000 507332-02C mrcool.com Page 29 of 35...
  • Page 31 070-3 Factory Setting 090-4 Factory Setting 110-5 Factory Setting Table 14. Allowable Circulation Speeds Model Yellow Blue Brown Black Factory Setting Table 15. Service Blower WARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD WARNING Filters Page 30 of 35 mrcool.com 507332-02C...
  • Page 32 Flue And Chimney Electrical Cleaning the Heat Exchanger and Burners NOTE: Figure 29. NOx Inserts Figure 30. Remove 5 Screws if Necessary (either side of cabinet) 507332-02C mrcool.com Page 31 of 35...
  • Page 33 Figure 31. Burner, Combustion Air Inducer Assembly & Heat Exchanger Removal CAUTION Page 32 of 35 mrcool.com 507332-02C...
  • Page 34 Planned Service Fresh air grilles and louvers Instruct the homeowners to pay attention to their furnace Red LED Flash Code LED Off Not used NOTE Table 16. 507332-02C mrcool.com Page 33 of 35...
  • Page 35 • • • • • Control Panel • • Parts Transformer • • • • • • • Ignitor Blower Parts • • • • • • Motor • Motor mounting frame • • Page 34 of 35 mrcool.com 507332-02C...
  • Page 36 A copy of all installation instructions for all Product equipment, all venting instructions, all parts lists instructions shall remain with the appliance or equipment at the completion of the installation. GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS. 507332-02C mrcool.com Page 35 of 35...
  • Page 37 Signature Series MGD80*SE-XA Warm Air Gas Furnace ELECTRICIAN and/or HVAC TECHNICIAN: LICENSE #: INSTALLATION DATE: INSTALLATION LOCATION: SERIAL NUMBER: The design and specifications of this product and/or manual are subject to change without prior notice. Consult with the sales agency or manufacturer for details.

This manual is also suitable for:

Mgd80 se seriesMgd80se045a3aMgd80se070b3aMgd80se090b4aMgd80se110c5a