COMFORTNET™ SYSTEM

demand and transmits the demand along with a fan request to the indoor unit. The indoor unit then sends the demand to the ECM motor. The table below lists the various ComfortNet™ systems, the operating mode, and airflow demand source.

System

System Operating

Airflow Demand Source

Mode

 

 

 

 

 

 

Cooling

Air Conditioner

Air Conditioner +

 

 

Heating

Furnace

Furnace

 

 

 

 

 

 

Continuous Fan

Thermostat

 

 

 

 

 

 

 

Cooling

Heat Pump

 

 

 

 

Heat Pump Heating

Heat Pump

Heat Pump +

Only

 

Furnace

Auxiliary Heating

Furnace

 

 

 

 

 

Continuous Fan

Thermostat

 

 

 

 

 

 

 

Cooling

Furnace

Furnace + Non-

 

 

 

 

Comm 1stg Air

Heating

Furnace

Conditioner

 

 

 

Continuous Fan

Thermostat

 

 

 

For example, assume the system is an air conditioner matched with a furnace. With a call for low stage cooling, the air conditioner will calculate the system’s low stage cooling airflow demand. The air conditioner will then send a fan request along with the low stage cooling airflow demand to the furnace. Once received, the furnace will send the low stage cooling airflow demand to the ECM motor. The ECM motor then delivers the low stage cooling airflow. See the applicable ComfortNet™ air conditioner or heat pump installation manual for the airflow delivered during cooling or heat pump heating.

In continuous fan mode, the CTK01AA thermostat provides the airflow demand. The thermostat may be configured for a low, medium, or high continuous fan speed. The low, medium, and high fan speeds correspond to 25%, 50%, and 75%, respectively, of the furnaces’ maximum airflow capability. During continuous fan operation, the thermostat sends a fan request along with the continuous fan demand to the furnace. The furnace, in turn, sends the demand to the ECM motor. The ECM motor delivers the requested continuous fan airflow.

FOSSILFUELAPPLICATIONS

This furnace can be used in conjunction with a CT™ compatible heat pump in a fossil fuel application. A fossil fuel application

refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means of heating (heat pump or gas furnace). When used with the CTK01AA thermostat, the furnace/heat pump system is automically configured as a fossil fuel system. The balance point temperature may be adjusted via the CTK01AA thermostat advanced user menus (see CTK01AA instructions for additional information).

CTK01AAWIRING

NOTE: RefertoElectricalConnections for115voltlineconnections to the furnace.

NOTE: A removable plug connector is provided with the control to make thermostat wire connections. This plug may be removed, wire connections made to the plug, and replaced. It is strongly recommended that multiple wires into a single terminal be twisted together prior to inserting into the plug connector. Failure to do so may result in intermittent operation.

Typical 18AWG thermostat wire may be used to wire the system components. One hundred (100) feet is the maximum length of wire between indoor unit and outdoor unit, or between indoor unit and thermostat. Wire runs over (100) feet require larger gauge wire.

FOUR-WIRE INDOOR AND OUTDOOR WIRING

Typical ComfortNet™ wiring will consist of four wires between the indoor unit and outdoor unit and between the indoor unit and ther- mostat. The required wires are: (a) data lines, 1 and 2; (b) thermo- stat “R” (24 VAC hot) and “C” (24 VAC common).

CTK01AA

1 2 R C Thermostat

1

2

R

C

CT™ Compatible Furnace

Integrated Control Module

1

2

R

C

CT™ Compatible AC/HP

Integrated Control Module

 

 

 

 

System Wiring using Four-Wires

TWO-WIREOUTDOOR,FOUR-WIRE INDOOR WIRING

Two wires can be utilized between the indoor and outdoor units. For this wiring scheme, only the data lines, 1 and 2, are needed between the indoor and outdoor units. A 40VA, 208/230 VAC to 24VAC transformer must be installed in the outdoor unit to provide 24VAC power to the outdoor unit’s electronic control. The trans- former is included with the CTK01AA kit. See kit instructions for mounting and wiring instructions. Four wires are required between the indoor unit and thermostat.

NOTE: Use of the CTK01AA transformer is recommended if installing a dual fuel/fossil fuel system. Failure to use the transformer in the outdoor unit could result in over loading of the furnace transformer.

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Goodman Mfg CVC9/95, MVC95 installation instructions System Wiring using Four-Wires, System System Operating

MVC95, CVC9/95 specifications

Goodman Manufacturing has established itself as a leader in the HVAC industry, and among its stellar lineup, the Goodman CVC9/95 and MVC95 stand out for their remarkable features, technologies, and efficiency.

The Goodman CVC9/95 is a high-performance gas furnace, designed for homeowners seeking reliability and cost-effective heating solutions. It operates with an impressive 95% Annual Fuel Utilization Efficiency (AFUE), which means that a significant portion of the fuel it consumes is converted into heat. This level of efficiency not only contributes to lower energy bills but also reduces greenhouse gas emissions, making it an environmentally friendly choice.

One of the standout features of the CVC9/95 is its multi-speed ECM blower motor. This technology adjusts the airflow according to the heating demands of the home, ensuring consistent and comfortable temperatures. The ECM motor also operates quietly, enhancing the comfort of your living space without the disruptive noise often associated with traditional furnaces.

The MVC95, on the other hand, offers similar efficiency with its also 95% AFUE rating. This model is equipped with a patented ignition system that enhances reliability with minimal maintenance needs. Its durable construction includes a heavy-gauge steel cabinet and an insulated blower compartment that minimizes heat loss. This design not only supports optimal performance but also contributes to its longevity.

Both models come with a self-diagnostic control board that provides straightforward troubleshooting capabilities, making it easier for technicians to ensure that your system is operating at peak performance. This feature aids in timely maintenance, which is crucial for extending the lifespan of the unit.

Additionally, Goodman backs their products with a strong warranty, offering a lifetime limited warranty on the heat exchanger and a 10-year limited parts warranty. This assurance provides homeowners peace of mind regarding their investment.

In the landscape of HVAC solutions, the Goodman CVC9/95 and MVC95 models exemplify a commitment to quality, efficiency, and advanced technology. Whether for new constructions or replacements, these furnaces offer superior heating performance coupled with modern conveniences, making them an invaluable choice for homeowners seeking effective climate control solutions. With their low emissions and high efficiency, choosing Goodman means investing in both comfort and sustainability.