owner's Manual dehumidifier 90H

ManualsBrandsTherma-Stor Products Group ManualsHousehold Appliance90H

Ultra-Aire 90H Installer’s & Owner’s Manual

FOR HVAC INSTALLER ONLY

WARNING: TO AVOID TRANSFORMER DAMAGE

ONLY CONNECT WHITE WIRE TO CONTROL IF DAMPER IS USED.

The white wire controls the optional motorized damper

that can be installed into a fresh air duct. This provides

the ability to control when fresh air is introduced into the

building by using the ventilation timer function labeled

“DMP” on the control (See Section 3.7). If the motorized

damper is not used, DO NOT CONNECT THE WHITE WIRE

TO THE CONTROL OR DAMAGE TO THE TRANSFORMER

MAY RESULT. Simply leave the (DMP) terminal unused if

the damper is not used, and cap off the white lead fro mthe

Ultra-Aire base unit.

5.2C Auxiliary relay operation

At times it may be desirable to coordinate fan operation

of the central heating/cooling system with dehumidiﬁer

operation. The DEH 3000 features a relay that provides

this ability. The relay terminals labeled NC, COM and

NO operate according to the following chart:

Dehumidiﬁcation

Operation COM/NO COM/NC

ON CLOSED OPEN

OFF OPEN CLOSED

Common uses (assuming standard thermostat wiring color

schemes as noted):

Disengage A/C during dehumidiﬁcation

Redirect the yellow thermostat wire to the NC

terminal. Wire the yellow wire from the A/C to the

COM (B) terminal.

Engage A/C during dehumidiﬁcation

Connect a wire from the “R” terminal on the the

thermostat to the “com” terminal on the DEH 3000.

Connect a wire from the “NO” terminal on the DEH

3000 to the “Y1” terminal on the thermostat.

5.2D Dehumidiﬁer lockout/activation AC sensor

The control has the ability to activate the dehumidiﬁer or

deactivate the dehumidiﬁer when the air conditioner is

running.

Standard wire colors for thermostats are as follows:

Description Color Terminal code

24VAC Return Red R

Call for Heat White W or W1

Force Fan On Green G

Compressor

Call for Cooling Yellow Y or Y1

UA Base Unit

Yellow

Red

Blue

Green

White

DAMPER

24 VAC

DMP COMP FAN

DEH 3000 Wiring Diagram

optional