Thermo Products OMC-70, GMC-85 service manual Base Installation

Page 14

All installations and services must be performed by qualified service personnel.

Figure 1B.

D. BASE INSTALLATION

1. Combustible Floor Base Model: 70-BASE

Referring to Figure 1A, for applications using a combustion air channel and a supply air duct, use the base as a template to mark the floor opening locations. See Figure 2 for cutout locations. Cut a square opening in the floor for the supply air duct. Cut the opening 1-inch larger than the square template opening. Cut the combustion air duct opening. Cut opening 1/8 inch larger than the template opening. See Figure 1A for cutout sizes.

Figure 2.

Place the bottom base panel in position. Mark the square opening location on the distribution duct at the connection point of feeder duct. Remove the bottom panel. Cut an opening in the duct slightly larger than the feeder duct. Cut the feeder duct to length. (Refer to Figure 3 for location of this cut.) Install the feeder duct. Bend over each tab. Insure an airtight seal by using high temperature sealant or tape on the joint. Reinstall the bottom panel over the feeder duct. Insert and secure the combustion air duct. Put the top panel in place.

IMPORTANT: A combustion air duct must be used. If the underside of the mobile home is skirted or enclosed (e.g. enclosed in a crawlspace), the combustion air intake should exit through the skirting, or enclosure, if at all possible. All joints and seams of supply ducts and combustion air ducts must be closed with a sealing method suitable to the application conditions and temperatures ( e.g. high temperature silicone caulk and/or aluminum tape).

13

Page 13 Page 15
Image 14
Page 13 Page 15
Contents GAS-FIRED or OIL-FIRED Furnace Safety Section Do not RUN the OIL Pump DRY for More than Five MinutesPage Page Page Power Switch Table of Contents Section Beginning Page Models OMC/GMC III. Furnace Specifications Model OMC-70 GMC-85Burner Data Blower DataFurnace Location IV. Installation Roof JackStandard Chimney Page Base Installation Page Page Alcove Installation Closet InstallationCombustion AIR Page Page Fuel Piping Page Page Electrical Wiring AWG Page Wiring Diagram Burner Installation Burner Operation and Adjustment Page Flue GAS Combustion Analysis Burner Combustion ParametersPage 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 Extended Shutdown On Shut DownVI. User Information Section Component Locations Inspection AreasFilter 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.
Top Page Image Contents