SINGlE ZONE – NOT DUCTED TO HVAC SySTEM INSTAllATION
(CONTINUED)
fIGURE 15 – Single Zone – Not Ducted to HVAC Installation
DEHUMIDIFIED SPACE
DEHUMIDIFIER
EQUIPMENT ROOM
HVAC FURNACE
DEHUMIDIFIED AIR
IS SUPPLIED
TO DUCTED SPACE
AIR IS PULLED
FROM AREA
GRILLE WITH 8" DIA.
DUCT COLLAR – 1750A
GRILLE WITH 10" DIA.
DUCT COLLAR – 1770A
10’
MINIMUM
90-1536
DUCTING & WIRING
Wiring Notes:
• If using the on-board dehumidifier control, no
additional wiring is required .
• If wiring to a Model 76 Control, where the control
will be mounted in the space being dehumidified, see
MODEL 76 EXTERNAL CONTROL section on page 19.
• If wiring to a Model 76 Control, where the control will
be located somewhere other than the space being
dehumidified, see MODEL 76 REMOTE CONTROL
section on page 20 .
• If wiring to a Model 8910 Home Comfort Control
™
or Third-Party Control, see MODEL 8910 HOME
COMFORT CONTROL
™
OR THIRD-PARTY CONTROL
section on page 21 .
Ducting Notes:
• If dehumidifying a location that is noise sensitive,
install multiple registers to reduce air velocity .
• Airflow is approximately 500 CFM for the 1770A, and
275 CFM for the 1750A .
• CYCLE PERIOD: This determines how frequently the dehumidifier will sample
the air to check the humidity level . Set to 1 hour and adjust as needed .
• For Ventilation switch settings, see VENTILATION section beginning on page 14.
• Leave the LOCAL/EXTERNAL switch in the LOCAL position if using the
dehumidifier’s onboard control . If installing a separate control, see MODEL 76
EXTERNAL CONTROL on page 19, MODEL 76 REMOTE CONTROL on page 20,
or MODEL 8910 HOME COMFORT CONTROL
™
OR THIRD-PARTY CONTROL on
page 21 .
fIGURE 16 – Single Zone – Not Ducted to
HVAC System, DIP Switch Settings
90-1538
ON
1234
4
3
2
1
ON
HVAC FAN OFF
PRIMARY
VENT-AUTO
VENT-TIMED
HVAC FAN ON
2 HOUR
3 HOUR
30 MIN.
1 HOUR
SYSTEM SETUP
CYCLE PERIOD
EXTERNAL
PRIMARY/SECONDARY
LOCAL
• Sampling will occur at the end of the Cycle Period. At the onset of sampling, the dehumidifier damper output turns on, the dehumidifier blower
turns on, and the green Status LED flashes .
• After three minutes, the dew point of the incoming air is measured and compared to the setting on the control knob. If the dew point of the
incoming air is above the setting, the compressor turns on and the green Status LED switches to solid illumination . If the dew point is below
the setting, the dehumidifier damper output turns off and the dehumidifier blower turns off along with the green Status LED .
• The dew point of the incoming air is continuously monitored during compressor operation. When the dew point of the incoming air falls below
the setting on the control knob, the dehumidifier damper output turns off and the dehumidifier compressor and blower turn off along with the
green Status LED .
SEQUENCE Of OPERATION (Refer to pages 19-21 for sequence with alternate controls.)
DIP SWITCH CONfIGURATION
10
