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Ultra-Aire SD12 Installation Instructions
www.Ultra-Aire.com | (800) 533-7533
www.Ultra-Aire.com | (800) 533-7533
Ultra-Aire SD12 Installation Instructions
CONTROLS
Ultra-Aire Wired to the DEH 3000 Digital
Control (Part # 4028539)
CO
M
FA
N
24V
DEHU
*
DMPR
24V
AC
COMP FAN
Ultra-Aire Wired to the Remote Dehumidistat
(Part # 4020175)
CO
M
FA
N
24V
DEHU
*
DMPR
RED
A low voltage control must be used with the Ultra-Aire SD12.
COM
24VAC Power Transformer Neutral Side
FAN
Fan Control
24V
Transformer High Side
DEHU
Dehumidification (Fan and Compressor) Control
DMPR
24VAC Power Transformer Neutral Side
*
Spare Terminal (Open)
Terminal Block Control Operation:
Compressor ON / Fan ON
Make contact between 24V and DEHU terminals
Compressor OFF / Fan ON
Make contact between 24V and FAN terminals
Power HVAC Accessory
Connect the accessory to the DMPR (or COM) and 24V terminals
Between the COM
/
DMPR lead and the 24V TERMINAL is a 40VA transformer. This low voltage power
source powers the relay coils which control the fan and compressors. This 24VAC transformer can also
be used to power HVAC accessories external to the dehumidifier.
NOTE: 18 gauge wire needed between the Ultra-Aire SD12 dehumidifier and the external control.