Thermo Products CHX1-75N, CDX1-75N, CHX1-125N, CHX1-100N, CDX1-125N, CDX1-100N Is the High Limit

Page 50

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

IS INDUCER RUNNING

ON LOW SPEED?

YES

DOES THE HOT

SURFACE IGNITOR

ENERGIZE AND GLOW?

YES

NO

NO

CHECK CONTACTS ON LOW FIRE PRESSURE SWITCH AND FOR BLOCKAGE IN FLUE. IF OK, REPLACE DUAL PRESSURE SWITCH.

IS THERE VOLTAGE ACROSS

HOT SURFACE IGNITOR

TERMINALS "IGN" & "IGN N" AT THE 50V61-143 CONTROL AFTER 25 SECOND PREPURGE?

YES

CHECK WIRING TO HOT

SURFACE IGNITOR AND

IF OK, REPLACE HOT

SURFACE IGNITOR

ASSEMBLY

 

REPLACE THE

 

50V61-143 CONTROL.

 

 

 

 

 

YES

 

 

 

 

IS THE HIGH LIMIT,

NO

ROLL-OUT LIMIT, AND

AUX LIMIT ON

 

 

(CDX MODELS)

 

SWITCHES CLOSED?

NO

IF HIGH LIMIT OR

AUX LIMIT OPEN CHECK

FOR RESTRICTED

FILTERS OR DUCT WORK IF ROLL-OUT SWITCH OPEN INSPECT FLUE FOR RESTRICTIONS.

AFTER HOT SURFACE IGNITOR WARM-UP, DOES GAS VALVE OPEN?

YES

AFTER GAS VALVE

OPENS, DO THE

BURNERS IGNITE?

NO

NO

 

CHECK ACROSS "MVL" AND

 

 

"MV COM" TERMINALS ON

 

 

50V61-143 CONTROL FOR 24

NO

 

VOLTS DURING THE 4 SECOND

 

 

 

FLAME PROVING PERIOD

 

 

AFTER IGNITOR WARM-UP.

 

 

IS THERE 24 VOLTS?

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

IS COLLECTOR BOX

NO

PRESSURE SWITCH CLOSED?

YES

CHECK WIRING TO GAS

VALVE AND IF OK,

REPLACE GAS VALVE.

CHECK FOR PROPER LINE

AND MANIFOLD PRESSURE.

REFERENCE GAS PRESSURE

CHART PAGE 31.

REPLACE THE

50V61-143 CONTROL.

CHECK DRAIN FOR BLOCKAGE WATER TRAPPED IN HOSE, REPLACE SWITCH.

YES

OK

44

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Page 49 Page 51
Contents TWO Stage Condensing GAS Furnace MG-1010Safety Information Page Iii Page Index Section Beginning Height of Casing II. Furnace Specifications CHX1 Series Model noTemperature Rise Blower Motor HP Power Chokes Width of Casing Depth of CasingBTU/HR Output High fire / Low fire CDX1 Series Model noCDX1-75 CDX1-100 CDX1-125 BTU/HR Input High fire / Low fire @HEATING TAP C High fire / Low fire#S00S4379 Installation Parts Packages CHX1-75 Description Quantity#S00S4378 Installation Parts Packages CDX1-75 Description Quantity #S00S4380#S00S4381 CHX1-75 CHX1-100 CHX1-125 CDX1-75 CDX1-100 CDX1-125 III. General InstallationCodes and Clearances Furnace Location B1. CDX1 Horizontal ApplicationPage Maximum Vent Length Replacing AN Existing Furnace from a Common VentGeneral Requirements for Venting CHX1/CDX1 Sidewall Venting Vent Terminal Location Requirements Vent Terminal Location Guidelines E1. Single Pipe Sidewall Venting OptionInstallation of Outside VENT/AIR Intake Terminations Optional TerminationsPage Page Connecting the Exhaust Vent to the Inducer Page Connecting the Combustion AIR Inlet Connecting the Furnace to Roof VENT/AIR Terminations Trap Assembly Mounted on CHX1 Trap Assembly Mounted on CDX1Page General GAS Piping Filters CHX1 Models Highboys CDX1 Models Counterflows Rate WiringUSE of NON-THERMO Pride Filter Retention Means AIR Velocity Furnace ModelElectronic AIR Cleaner EAC and Humidifier Installation Thermostat Connections and Anticipator SettingBlower and Control Panel Wiring CFM Settings Low fire High fire CDX1-75Field Wiring and Replacing Wiring CHX1-75Contacts Close Retry will be Made If System is in Lockout Initial Start UP Operating InstructionsGas flowrate by clocking gas meter Exploded View of CDX/CHX Gas Control System BTU Normal Manifold CHX Low CDX LowCHX Low CDX Low Model Series Pressure in. W.GChecking The Burner Flame Checkout Procedure Sketch of Typical Main Burner Flames During OperationConverting GAS Flow Rate Furnace Checkout Procedure Installers Instructions to UserVI. Troubleshooting Diagnostic Features Terminals IND HI to IND N or IND LO to Is the High Limit Page 50V61-143 Control AIR Blower Turn OFF Replacement parts list for CHX1-75, CHX1-100 and CHX1-125 Page Replacement parts list for CDX1-75, CDX1-100 and CDX1-125 Page Appendix B Wiring Diagrams
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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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