SHEET 5 – TWO ZONE WITH EXTERNAL CONTROL IN PRIMARY ZONE
Note:
Dehumidifier zoning is not recommended in zoned HVAC applications.
PARTS NEEDED
(ADDITIONAL PARTS MAY BE REQUIRED)
• Model E080/E100/E130
• Model 76, Model 8620 or Model 8910 control
• Insulated duct
• Thermostat wire
• Duct fittings & hardware
• 20A outlet (E130 only)
• Drain pan and float switch (if required)
• Grilles
• 5442 Damper Kit (includes: 2 - 10" dia N.O.
dampers, 2 -10" dia N.C. dampers and one
40VA, 24VAC plug-in transformer)
SEQUENCE OF OPERATION
The external control (i.e. Model 76 Control or Model 8910 Home Comfort Control)
provides on-demand control of the dehumidifier for the Primary Zone. When the
Primary Zone calls for dehumidification, the dehumidifier energizes the dampers,
and turns on its blower and compressor. The dehumidifier will also turn on the HVAC
System Blower if wired as shown in
WIRING EXTERNAL CONTR
OL IN PRIMARY ZONE
above. The Primary Zone demand will override an existing Secondary Zone demand.
The Secondary Zone is controlled by the relative humidity (RH) setting at the
dehumidifier control. Once an hour, or immediately after dehumidifying the primary
zone, the dehumidifier will “sample” the air in the Secondary Zone. When sampling,
the dampers are
not
energized while the dehumidifier blower runs and the RH is
measured. If the RH is above the setting on the control, the compressor will turn on
and the Secondary Zone will be dehumidified.
SET UP THE DEHUMIDIFIER FOR ZONING AND EXTERNAL CONTROL
1.
Press the MODE button for 3 seconds to enter the Installer Set Up menu
2.
Press the MODE button until
ZONE DISABLED
appears.
3.
Press the
or
button to change to
ZONE ENABLED
.
4.
Press the MODE button again to show
EXTERNAL DISABLED
.
5.
Press the
or
button to change to
EXTERNAL ENABLED
.
6.
Press the MODE button repeatedly until
DONE
shows on the display.
WIRING EXTERNAL CONTROL IN PRIMARY ZONE
A
B
C/-
R/+
DH
DH
N.C. DAMPERS
120
V
A
C
24
VAC
G
HVAC
EQUIPMENT
THERMOSTAT
R
C
G
W
Y
ODT
SENSOR
DH DH
REMOTE
+
-
A
B
HVAC EQUIP
Gh
Rf
Cf
Gs
W
Y
DAMPERS
VENT
DEH
FLOAT
SWITCH
DEHUMIDIFIER
CONTROL
BOARD
NC
NO
20 VA (MIN.)
TRANSFORMER
N.O. DAMPERS
R
C
W
Y
EXISTING WIRE
NEW WIRE
HVAC EQUIPMENT
NORMALLY
OPEN
DAMPER
NORMALLY
OPEN
DAMPER
NORMALLY
CLOSED DAMPER
NORMALLY
CLOSED DAMPER
TO/FROM PRIMARY ZONE TO BE DEHUMIDIFIED
TO/FROM SECONDARY ZONE TO BE DEHUMIDIFIED
HVAC EQUIPMENT
NORMALLY
CLO
D
D
AMPER
NORMALLY
CLO
D
D
AMPER
NORMALLY
OPEN
D
AMPER
NORMALLY
OPEN
D
AMPER
TO/FROM
CONDARY ZONE TO BE DEHUMIDIFIED
TO/FROM PRIMARY ZONE TO BE DEHUMIDIFIED
FIGURE 1
– DUCT/DAMPER LAYOUT WITH
WHOLE HOUSE AS PRIMARY ZONE
FIGURE 2
– DUCT/DAMPER LAYOUT WITH
BASEMENT AS PRIMARY ZONE
6