Thermo Products GMC-85, OMC-70 service manual GAS-FIRED or OIL-FIRED Furnace

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GAS-FIRED OR OIL-FIRED FURNACE

DOWN FLOW & DIRECT VENT (SEALED COMBUSTION)

MODELS: OMC-70 AND GMC-85

INSTALLATION AND SERVICE MANUAL

For installation in:

1. Manufactured Homes

2.Modular Homes/Buildings

3.Site Construction—Residential (Single Story Dwellings)

:

FOR YOUR SAFETY

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

•Do not try to light any appliance.

•Do not touch any electrical switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire department.

: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency, or fuel supplier.

: Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to inspect the appliance and to replace any part of the electrical or control system that has been underwater.

PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH THE USER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL.

THERMO PRODUCTS, LLC.

POST OFFICE BOX 217

NORTH JUDSON, IN 46366

PHONE: (574) 896-2133

MO-422

ECN 4528-MA

MADE IN USA

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Contents GAS-FIRED or OIL-FIRED Furnace Do not RUN the OIL Pump DRY for More than Five Minutes Safety SectionPage Page Page Power Switch Table of Contents Section Beginning Page Models OMC/GMC OMC-70 GMC-85 III. Furnace Specifications ModelBlower Data Burner DataStandard Chimney IV. Installation Roof JackFurnace Location Page Base Installation Page Page Closet Installation Alcove InstallationCombustion AIR Page Page Fuel Piping Page Page Electrical Wiring AWG Page Wiring Diagram Burner Installation Burner Operation and Adjustment Page Burner Combustion Parameters Flue GAS Combustion AnalysisPage OMC/GMC Troubleshooting Flowchart If not, replace 1 TDR. On Module GMC or ignition transformer OMC Yes Does the burner stay Yes CAD Cell Checkout Procedure OMC only Heat Exchanger Cleaning Instructions Cleaning or Replacing Flue Pipes On Shut Down Extended ShutdownVI. User Information Section Inspection Areas Component LocationsFilter Location and Cleaning Appendix A. Replacement Parts List

GMC-85, OMC-70 specifications

Thermo Products has built a reputation for delivering top-notch heating and cooling solutions, and the GMC-85 and OMC-70 models are no exception. These high-efficiency gas furnaces are designed to meet the diverse needs of homeowners while prioritizing energy savings and comfort.

The GMC-85 model is known for its impressive efficiency ratings, operating at an AFUE (Annual Fuel Utilization Efficiency) of up to 85%. This means that a significant portion of the fuel consumed is converted into usable heat, making it an economically sensible option for heating your home. Additionally, it features a multi-speed blower motor, which allows for better air circulation and consistent heating throughout the living space. This model also includes a durable heat exchanger crafted from high-quality materials, ensuring longevity and reliability in performance.

On the other hand, the OMC-70 furnace offers a slightly lower AFUE rating of 70%, but it shines in certain areas such as cost-effectiveness and straightforward installation. Its reputation for reliability is bolstered by its rugged design and construction that can withstand the rigors of various climates. The OMC-70 also includes a standard efficiency motor, contributing to reduced energy consumption while delivering appropriate heating requirements for smaller spaces.

Both models utilize advanced technology aimed at improving user convenience and efficiency. Features such as electronic ignition systems enhance reliability by eliminating the need for a pilot light, while also providing a quick and efficient startup process. Furthermore, each unit can be easily integrated with smart thermostats, allowing homeowners to manage their heating needs remotely for optimized performance.

Noise reduction is another characteristic that sets these models apart. Both the GMC-85 and OMC-70 employ sound-dampening technologies to ensure quieter operation, providing a peaceful environment for families.

In summary, Thermo Products' GMC-85 and OMC-70 furnaces present excellent options for homeowners looking to achieve comfort and energy efficiency. With their durable construction, advanced technology, and features geared toward enhancing user experience, these models provide reliable heating solutions suitable for various needs and budgets. Investing in either of these products translates to improved energy savings and consistent warmth, making them popular choices in today's competitive market.
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