Therma-Stor Products Group 90H User Manual
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Ultra-Aire 90H Installer’s & Owner’s Manual
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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,
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.
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:
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):
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.
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.
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.
deactivate the dehumidifier when the air conditioner is
running.
Standard wire colors for thermostats are as follows:
Description
Description
Color
Terminal code
24VAC Return
Red
R
Call for Heat
White
W or W1
Force Fan On
Green
G
Compressor
Call for Cooling
Call for Cooling
Yellow
Y or Y1
UA Base Unit
Yello
w
Red
Blue
Gr
een
White
DAMPER
24
VAC
DMP
COMP
FAN
DEH 3000 Wiring Diagram
optional