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

Figure 16.

: The CMA/CMC furnace models are direct vent design and do not require an air shutter adjustment (air shutters are not used) for proper flame characteristics. Burner box access cover must always be secured with all screws in place and tightened before operating furnace.

E.SETTING TEMPERATURE RISE

All CMA/CMC Models are designed and wired at the factory for a heating blower speed that should result in an approximate temperature rise of 60°F. The blower motors are wired on med-low speed for heating mode. The temperature rise through the furnace may vary depending on the duct system, elevation, heating value, etc. for each installation. A lower temperature rise will result in a higher efficiency. Temperature rise = supply air temperature - return air temperature. After 10 to 15 minutes of continuous operation, the temperature rise through the furnace must fall within a range of 40°F to 70°F. If the outlet or supply duct temperature is too high, you should check to make sure that your return air filter is clean, your return air openings are free from obstruction, your outlet registers are properly adjusted and clear and your supply and return air ducts are open.

The circulating air blower is not moving enough air if the supply air temperature is still too high. Before proceeding further, turn off the power supply to the furnace and remove the front door of the unit.

The speed of the blower must be increased by changing the speed tap from the motor (see figure 15). This is accomplished by locating the control panel attached to the blower housing and switching blower lead connected to the “Heat” terminal on the White-Rodgers 50A65-143 control, with one of the higher speed blower leads attached to a terminal marked “Park”. Be sure to attach any unused blower leads to a terminal marked “Park”. Replace the blower door and turn on the power supply.

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Thermo Products CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N, CMA3-50D36N, CMA3-75D36N, CMC1-75DV3N Setting Temperature Rise
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CMC1-75DV3N, CMA3-75D36N, CMA3-50D36N, CMC1-75D36N, CMC1-50D36N specifications

Thermo Products offers a versatile range of heating solutions that cater to various industrial and commercial applications. Among their popular models are the CMC1-75DV3N, CMC1-50DV3N, CMA3-50D36N, CMC1-50D36N, and CMC1-75D36N. Each model is engineered to deliver efficient performance and durability, making them ideal for meeting diverse heating needs.

The CMC1-75DV3N is tailored for high-capacity heating requirements, featuring advanced heating technology that ensures rapid and consistent heating. Its robust design includes high-efficiency burners, and the unit is built with durable materials for extended lifespan. This model is equipped with integrated safety mechanisms that prevent overheating and ensure reliable operation.

In contrast, the CMC1-50DV3N is designed for medium-sized applications, prioritizing both efficiency and cost-effectiveness. It includes automated controls to optimize energy usage while maintaining consistent temperature outputs. Its compact footprint makes it suitable for installations with space constraints, without compromising on heating performance.

The CMA3-50D36N model introduces enhanced energy management features, offering dynamic heating solutions. This model leverages advanced thermal technologies that aim to reduce energy consumption while maximizing heating output. Its versatile installation options allow users to adapt the unit to their specific space requirements seamlessly.

The CMC1-50D36N and CMC1-75D36N models are recognized for their adaptability across various applications. The CMC1-50D36N specifically caters to smaller heating needs, while the CMC1-75D36N serves larger spaces. Both units come equipped with user-friendly interfaces that simplify operation and adjustments, allowing for precise temperature control.

All models feature high-quality insulation and construction, helping to minimize heat loss and enhance system efficiency. They are designed with maintenance in mind, ensuring easier access to key components for service and repairs.

Through the incorporation of customizable settings, these models can suit the unique requirements of different environments, whether it be industrial facilities, commercial spaces, or residential buildings. With Thermo Products' commitment to innovation and quality, these heating solutions exemplify reliability, making them a solid choice for anyone in need of efficient heating technology.
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