Model ZCDC
2-Zone Plug&Play Automatic Comfort Control for Residential New Construction
While the thermostat controls the HVAC equipment and the temperature in the home, the ZCDC 2-Zone Control automatically controls the distribution of heating and cooling to provide a balanced, uniformly comfortable home.
Eliminates Bypass.
Eliminates DAT sensor and separate 24VAC transformer.
About half the material cost of zoning.
About half the installation time of zoning.
Works with any 24VAC thermostat including smart thermostats, OEM thermostats and simple thermostats.
Automatic and Manual Comfort Control
Night Comfort option saves 30% in energy at night.
Typical Installation
A typical installation includes two round R80CJ or rectangular RT80CJ Modulating Plug&Play Dampers installed in the trunks feeding the upstairs and downstairs zones.
The DC3C Damper Control is installed near the equipment and wires to gas/electric equipment terminals R, C, Y and W or heat pump equipment terminals R, C, Y, O or B, and E for 24VAC power and to monitor the equipment for heating and cooling calls. The dampers connect to the DC3C using the included plug&play cables.
The low cost TS4B Wired Temperature Sensor is installed in the upstairs zone and wires to the DC3C Damper Control.
The ZCDC Plug&Play 2-Zone Control is installed in the downstairs zone and connects to the DC3C Damper Control using the included plug&play cable for 24VAC power and communication to the DC3C. The ZCDC is compatible with Smart, OEM or simple 24VAC thermostats. Alternately, the ZCDC can be installed in the upstairs zone and the sensor installed in the downstairs zone.
How It Works
While the thermostat controls the HVAC equipment and the temperature in the home, the ZCDC monitors the equipment for heating and cooling calls and monitors the downstairs temperatures at its location and the upstairs temperature at the sensor.
If the upstairs and downstairs temperatures differ by 2 degrees or more, the ZCDCW automatically distributes 2% more heating or cooling to the zone that needs it every 2 minutes.
To distribute more heating or cooling upstairs, the upstairs damper fully opens and the downstairs damper partially closes, forcing more heating or cooling to the upstairs zone. To distribute more heating or cooling downstairs, the downstairs damper fully opens and the upstairs damper partially closes, forcing more heating or cooling to the downstairs zone.
The ZCDC system dynamically adjusts the dampers to find the right distribution of heating and cooling
to provide a balanced, uniformly comfortable home and save energy in every season.
