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

Figure 18

2.A drip leg must be used on both LP and natural gas installations prior to the furnace in order to trap oil, condensate and other impurities which might otherwise lodge in the gas valve or plug the burner orifice. A drip leg shall be provided at the outlet of the gas meter when there is excessive condensation between the gas meter and the furnace. Failure to install a drip leg may void the limited warranty on the furnace.

: All gas piping must be leak tested using a soap and water solution (when the gas is turned on) following the procedure outlined in Section III, J, of this manual. A final test for gas leakage must be made after purging the gas line (refer to Section IV, B, of this manual). This test must be conducted with the unit operating and should include the furnace piping and gas valve. Never use an open flame to check for a gas leak.

: Care must be taken not to wet electronic components during leak test. Wetting the primary ignition module may damage its circuitry and cause a hazardous situation. Dry moisture from all leads and terminals if wetting occurs. Wait at least 24 hours for the circuit to fully dry before energizing the burner circuit.

J1. REQUIREMENTS AND SIZING OF DUCT WORK

The duct system must be sized and installed by a qualified installer or service person, following the design standards of the Air Conditioning Contractors of America (ACCA) or ASHRAE.

1.When it is located in the same room as the furnace, a return air register must be installed a minimum of 20 feet away from the furnace.

2.The return air duct shall also be sealed to the furnace and also terminate outside of the furnace space, if supply ducts carry circulated air to areas outside the space containing the furnace.

3.The return air duct system must equal the supply air duct system in its capabilities. Use a supplier's catalog for proper sizing of outlet and return air registers and grills to ensure that they meet the CFM requirements of the run to which they are connected.

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Thermo Products CHB1-125N, CHB1-75N, CHB1-100N, CBD1-75N, CBD1-100N, CBD1-125N J1. Requirements and Sizing of Duct Work

CHB1-50N, CBD1-50N, CBD1-125N, CBD1-100N, CBD1-75N specifications

Thermo Products offers a range of high-performance heating and cooling solutions tailored to meet the demands of both residential and commercial applications. Among their innovative offerings are the CHB1-50N, CBD1-75N, CHB1-100N, CHB1-125N, and CBD1-100N models, which are designed to provide efficient temperature control while maximizing energy savings.

The CHB1 series, including the CHB1-50N, CHB1-100N, and CHB1-125N, features advanced heating technologies that allow for rapid heating response times. These units are equipped with high-efficiency heat exchangers that ensure optimal heat transfer with minimal energy consumption. A key characteristic of these models is their ability to operate quietly, making them ideal for settings where noise reduction is a priority.

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In summary, the Thermo Products CHB1-50N, CBD1-75N, CHB1-100N, CHB1-125N, and CBD1-100N models represent a comprehensive solution for effective heating and cooling needs. With their blend of efficiency, innovative technologies, user-friendly design, and durability, these products are positioned to deliver exceptional value and performance in a variety of environments.