National Comfort Products Comfort Pack-T-Series Non Condensing Furnace User Manual

National Comfort Products Comfort Pack-T-Series Non-Condensing Furnace Manual

Introduction

The national comfort products Comfort Pack-T-Series Non Condensing Furnace is a through-the-wall packaged heating and cooling system designed for applications where indoor space is limited or a self-contained exterior-wall installation is preferred. The unit combines a gas-fired, non-condensing furnace with packaged air-conditioning components in one cabinet, helping simplify installation compared with separate indoor and outdoor equipment.

This Comfort Pack furnace is intended for qualified HVAC professionals installing equipment in apartments, manufactured housing, additions, offices, and other spaces that require direct wall penetration. Its integrated furnace includes direct-spark ignition, safety controls, operating controls, and an integral flue arrangement. The design provides dedicated heating performance while supporting year-round comfort when matched with the appropriate thermostat and electrical service.

Available configurations use natural gas or propane equipment, depending on the exact model and factory setup. Model identification should always be checked before installation, service, or parts replacement. The unit is designed specifically for outside-wall, through-the-wall installation and should not be installed as a conventional indoor furnace.

This guide provides practical information for identifying specifications, preparing the installation, starting the system, and resolving basic operating problems. Gas piping, electrical connections, refrigerant work, combustion testing, and safety-control service must be completed by qualified personnel.

Specifications and Features

Exact performance depends on the model suffix, heating input, fuel type, electrical configuration, and installation conditions. Confirm the rating plate and approved installation manual before ordering parts or adjusting the furnace.

• Product type: Packaged Comfort Pack T-Series through-the-wall gas furnace and air-conditioning system.
• Furnace design: Non-condensing gas heat with integral flue duct and direct-spark ignition.
• Nominal cooling capacity: The referenced 2.5-ton configuration provides approximately 27,000 BTU of cooling capacity.
• Heating input options: 51,000 BTU and 64,000 BTU per hour configurations are identified in the product documentation.
• Heating output: Approximately 40,800 BTU per hour for the 51,000-BTU input model and 51,200 BTU per hour for the 64,000-BTU input model.
• Heating efficiency: The 80-percent-class non-condensing versions are documented within an approximate 80.1% to 82.5% efficiency range, depending on model.
• Maximum external static pressure: Up to 0.5 inches of water column for the documented configurations.
• Nominal temperature rise: Approximately 55°F for the 51-MBH model and 67°F for the 64-MBH model.
• Refrigerant: Confirm the nameplate before service; documented configurations specify R-410A.
• Installation location: Outside wall for through-the-wall installation only.

How to Install and Set Up the Comfort Pack-T-Series Furnace

Installation must follow the model-specific National Comfort Products manual, local building codes, fuel-gas regulations, and electrical requirements. Do not attempt gas or refrigerant installation as a do-it-yourself project.

1. Verify the model number, heating fuel, voltage, heating input, cooling capacity, and cabinet option against the rating plate and job requirements.
2. Confirm that the selected exterior wall can support the cabinet and that the opening, clearances, grille arrangement, drainage, and airflow path match the approved installation instructions.
3. Install the unit level in the prepared wall opening. Seal the perimeter against air and water infiltration without blocking required ventilation or service access.
4. Connect approved ductwork, return-air paths, supply-air connections, and filters. Keep the airflow path unobstructed.
5. Have a qualified technician connect the gas supply, install the required shutoff and sediment provisions, and test every connection for leaks.
6. Complete electrical wiring, thermostat wiring, grounding, and disconnect installation according to the wiring diagram supplied with the unit.
7. Open the gas shutoff, restore power, set the thermostat above room temperature, and observe the ignition sequence. For cooling, select cooling mode and lower the thermostat setting.
8. Verify burner operation, temperature rise, combustion, airflow, refrigerant performance, condensate or drainage behavior, and safety-control operation.

Never bypass a limit switch, pressure-related safety, flame sensor, door interlock, or other protective control. If ignition fails repeatedly, turn the system off and contact a qualified HVAC technician.

Troubleshooting the National Comfort Products Comfort Pack-T-Series

Disconnect electrical power before accessing internal components, and close the gas supply before performing work on gas-fired parts. The following checks are limited to basic observations and do not replace professional service.

• No heat: Confirm thermostat mode and setpoint, electrical power, the service disconnect, and the furnace switch. Check that the filter is clean and that supply and return grilles are open.
• Inducer or ignition operates but burners do not remain lit: A dirty flame-sensing component, inadequate gas supply, ignition fault, blocked venting, or safety-control trip may be involved. Stop operation and arrange qualified diagnosis.
• Short cycling: A restricted filter, blocked airflow, incorrect temperature rise, oversized equipment, or an open limit control can cause repeated shutdowns. Do not reset the limit repeatedly.
• Weak airflow: Inspect the filter, grilles, duct restrictions, blower operation, and thermostat fan setting. Persistent low airflow requires technician testing.
• Cooling not operating: Verify cooling mode, thermostat batteries where applicable, circuit breakers, outdoor-wall clearances, and airflow. Refrigerant service requires certified personnel.
• Unusual odor or suspected gas leak: Do not operate switches or create flames. Leave the building and contact the gas supplier or emergency services.
• Error codes: The exact diagnostic indicators vary by control board and model. Record any flashing light pattern or displayed code and provide it to the service technician rather than assuming a code from another Comfort Pack model applies.

For parts identification, warranty questions, or technical assistance, contact National Comfort Products at (800) 523-7138 or use the manufacturer’s official parts and support resources. Keep the model number, serial number, installation date, and observed symptoms available.

Pros and Cons

Advantages

• Space-saving design: Heating and cooling functions are packaged in one through-the-wall cabinet, which can be useful where a separate furnace room or outdoor condenser is impractical.
• Integrated gas heat: The furnace section includes direct-spark ignition and dedicated safety controls rather than relying on portable or supplemental heaters.
• Serviceable configuration: Model-specific heating inputs, cabinet options, and parts documentation help technicians match service work to the installed equipment.
• Suitable for targeted applications: It can fit apartments, additions, and other rooms requiring a self-contained wall-mounted HVAC arrangement.
• Through-the-wall access: Exterior placement can reduce the amount of indoor mechanical-room space required compared with a conventional split system.

Limitations

• Specialized installation: The unit is intended for outside-wall, through-the-wall installation, so it is not a direct replacement for every central furnace layout.
• Non-condensing efficiency: An 80-percent-class design typically offers less fuel efficiency than a modern condensing furnace, although it may simplify venting and installation.
• Model-specific compatibility: Thermostats, replacement controls, gas components, and refrigerant parts must match the exact model and revision.
• Professional service required: Gas combustion, venting, electrical work, and refrigerant circuits are not suitable for unqualified maintenance.

The national comfort products Comfort Pack-T-Series Non Condensing Furnace is best suited to property owners and contractors needing packaged, through-the-wall gas heating and cooling. Users seeking the highest available heating efficiency or a conventional indoor split-system arrangement may need a different equipment category.