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

17.If checking the input rate by measuring burner manifold pressure, proceed to step 18. If measuring the input rate by clocking the gas meter, repeat steps 9 through 11, above.

18.If the gas pressure is not within the specified high fire manifold pressure range (refer to Table 5), repeat steps 12(a) through 12(d), above, adjusting the high fire gas pressure regulator.

If the manifold pressure remains low and it cannot be adjusted into the proper range, the supply pressure may be too low. Follow these steps.

a.Turn off the gas at the manual gas shutoff valve.

b.Remove the automatic gas control valve inlet pressure tap and attach another pressure gauge to the inlet tap.

c.Turn on the gas and repeat steps 14 and 15, above.

d.Adjust the upstream (inlet) gas pressure to 14.0 in. W.G., or as close as possible.

e.Using a pressure gauge, measure and adjust the burner manifold gas pressure.

If it is still not possible increase the manifold gas pressure to within the required range, there is too little gas supply to operate the furnace at full (high fire) input rate under present conditions. If necessary, consult your gas supplier or qualified heating contractor for recommendations to alleviate the problem.

19.Turn off the gas at the manual gas shutoff valve (turn handle to the OFF position).

20.Remove all pressure gauges and replace all pressure tap plugs.

21.Go to Checkout Procedure below.

Adjusting Burner Input For Altitudes Above 2000 Feet

Ratings of gas utilization equipment are based on sea level operation and shall not be changed for operation at elevations up to 2,000 feet (600 m.). For operation at elevations above 2,000 feet (600 m), equipment ratings shall be reduced at the rate of 4 percent for each 1,000 feet (300 m) above sea level.

For additional information, refer to the latest edition of the National Fuel Gas Code.

Checking The Burner Flame

?￿CAUTION: The furnace model series CDX1 and CHX1 are sealed combustion designs that do not require an air shutter adjustment (air shutters are not used) for proper flame characteristics. The burner box access cover must always be secured with all screws in place and tightened before operating furnace.

Once the input rate has been confirmed correct for a specific application, the burner flames should be checked for proper adjustment.

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Thermo Products CHX1-125N, CDX1-75N, CHX1-75N, CHX1-100N, CDX1-125N, CDX1-100N operation manual Checking The Burner Flame
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CDX1-100N, CDX1-125N, CHX1-100N, CHX1-75N, CHX1-125N specifications

Thermo Products has established itself as a leader in the HVAC industry, providing innovative solutions for climate control with their latest product line, including the CHX1-125N, CDX1-75N, CDX1-100N, CHX1-75N, and CHX1-100N models. These units are designed for both efficiency and performance, catering to a wide range of heating and cooling needs.

One of the standout features of these models is their high energy efficiency ratings. Utilizing advanced inverter technology, these units dynamically adjust their operating frequency, optimizing energy consumption while maintaining consistent temperature control. This adaptability not only enhances comfort but also significantly lowers energy bills, making them an eco-friendly choice for both residential and commercial applications.

The CHX1 series, including the CHX1-125N, CHX1-75N, and CHX1-100N, is renowned for its robust build quality and superior performance in extreme conditions. They can operate effectively in varied environments, ensuring reliable heating during harsh winters and efficient cooling amid hot summers.

In contrast, the CDX1 series—featuring the CDX1-75N and CDX1-100N—focuses on delivering exceptional versatility. These models come equipped with advanced multi-zone capabilities, allowing users to control different areas or rooms with precision. This zoning capability not only enhances comfort but also optimizes energy efficiency by allowing users to heat or cool only the spaces that are occupied.

A common characteristic among all these models is their quiet operation. Designed with noise-reduction technologies, the units are engineered to operate with minimal sound, making them ideal for residential settings, offices, and other noise-sensitive environments.

Moreover, Thermo Products emphasizes user-friendly interfaces in their design. With intuitive controls and smart connectivity options, users can easily manage their HVAC systems through mobile applications, ensuring convenience and optimal temperature management from anywhere.

Overall, Thermo Products’ CHX1-125N, CDX1-75N, CDX1-100N, CHX1-75N, and CHX1-100N models exemplify the perfect blend of innovation, efficiency, and user-centered design. These heating and cooling solutions not only meet the demands of modern living but also contribute to sustainability efforts, making them a valuable addition to any climate control system.
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