The Green Air CT-DH-4 is installed for cooling and dehumidifying control. This unit may be used independently or with many other Green Air Products controls to create an integrated system. This diagram shows how to install the CT-DH-4 for independent control of exhaust fans for cooling and a dehumidifier for removing unwanted humidity while synchronizing ventilation with CO2 enrichment. When the temperature raise above the predetermined setting, the CT-DH-4 initiates a venting cycle and CO2 generation is momentarily halted. The Cyclestat- 4 is used to time the frequency and duration of the CO2 production. In the event of an exhaust cycle the Cyclestat will reset and immediately replenish CO2 enrichment upon completion of the exhaust function. The Cyclestat-4 timer has a built in photo sensor that prevents CO2 operation during darkness periods. If you are using a CO2 timer that does not have a photosensor you can get that option built into as a CT-DH-4P.
The CO2 generator or emitter system are plugged into the Cyclestat and the Cyclestat is plugged into the CO2 outlet of the CT-DH-4. The dehumidifier is plugged into the left dehumidifying outlet. The exhaust fan is plugged into the right side.
