Therma-Stor Products Group DEH 3000R owner manual Dehumidifier lock-OFF or lock-ON, Sensor feature

2.Run the Yellow wire from the A/C unit to the COM terminal on the DEH 3000R.

Red	A/C
Green	Unit
Yellow

Energize the A/C central fan during dehumidification

To automatically run the A/C FAN when the dehumidifier runs.

1.Attach a second Green wire to the Green fan wire terminal on the thermostat.

2.Connect the new Green wire to the COM terminal on the DEH 3000R.

3.Run a wire from the Red terminal on the thermostat to the NO (Normally Open) terminal on the DEH 3000R.

Red	A/C
Green	Unit
Yellow

2.4 Dehumidifier lock-OFF or lock-ON:

A/C sensor feature

To automatically activate or deactivate the dehumidifier when the air conditioner runs.

Activate dehumidification when the air-conditioner is running

A voltmeter is required for the next steps to ensure the correct

wiring from the A/C transformer is used to set up the Lock-in dehumidifier function.

1.The common wire from the existing A/C transformer (usually Black) must be attached to the Yellow wire from the Ultra-Aire dehumidifier.

TIP: The common wire can be identified as the wire from the A/C transformer that reads 0 volts between it and the Yellow air conditioning call for cooling wire.The incorrect wire will give a 20 to 28 volt reading.

2.Another Yellow wire must be added to the thermostat Yellow terminal and run to the “OFF DET” sensor terminal on the DEH 3000R.

TO A/C

Deactivate dehumidification when the air-conditioner is running

A voltmeter is required for the next steps to ensure the correct wiring from the A/C transformer is used to set up the Lock-out dehumidifier function.

1.The common wire from the existing A/C transformer (usually Black) must be attached to the Yellow wire from the Ultra-Aire dehumidifier.

TIP: The common wire can be identified as the wire from the A/C transformer that reads 0 volts between it and the Yellow air conditioning call for cooling wire. The incorrect wire will give a 20 to 28 volt reading.

2.Another Yellow wire must be added to the thermostat Yellow terminal and run to the “ON DET” sensor terminal on the DEH 3000R.

TO A/C

DEH 3000R Dehumidifier & Ventilation System Controller 4 Installation, Operation & Service Manual