GeneralAire DH70 Dehumidifier - Manual (Page 5)

5
Field Connections, Low Voltage
When a remote Humidistat is utilized, set the unit mounted humidistat to the “OFF” position.
Typical Equipment Layout Specification & Duct Connection
Blower InterLock Connections (Low Voltage)
Fan Coil / Air Handler
Control Thermostat (Typ)
G
W
Y
Existing Field Supplied
Control Wiring (Typ)
Field Supplied Control Wiring
Disconnect Existing Control Wiring
From Fan (G) Control Terminal
Reconnect to Blue Wire From DVA
Connect Brown Wire From DVA
To Fan (G) Terminal
Org Brn
Blu
GT
GF
RF
R C D G Gt Gf Rf
*
Remove Jumper for Independent Fan Control
R
Close on RH Rise
Optional Humidistat
* R
G
W
Y
Air Handler
DH 70
Return Air
Supply Air Out Side Air (OSA) Hood
Manual OSA Damper
24 Volt Motorized Damper
( Power Open- Spring Closed)
With Bug Screen
(Volume Adjustment)
Optional Outside Air Ventilation
Operation
The DH70 is designed to deliver dehumidified, filtered air to the living space, and is equipped with an onboard
humidistat and fan control and can be equipped with various accessories to enhance its operation, including a remote
humidistat, and your system may incorporate any or all of the described operational components
It is recommended that the indoor environment maintain a maximum relative humidity level of 50% to 60%. Other
factors may dictate a relative humidity level different than the recommended, such as musical instruments, antiques,
books/papers, or special situations. Winter minimum humidity levels of 30-35% may not be attainable without
supplemental humidification (Humidifier), and may not be desired during times of low outdoor temperatures.
System Variations:
Humidity Control - Standard
The system may be installed as free standing or incorporate ducting to an area or existing heating/cooling system.
Control is provided by Humidistat with a dial stem type adjustment built into the unit. Set the desired humidity set
point by turning the dial stem flat to the corresponding set point indicated on the face of the unit. This humidity
control unit will operate the compressor and circulation fan when the dehumidification system is activated, working
only when there is a call, or demand for dehumidification.
Remote Humidity Control (Wall Mounted)
When a remote Humidistat is utilized, set the unit mounted humidistat to the “OFF” position.
This control provides the same control functions as above but with greater precision and can be located in the space
for easier access, and may include additional features. Available as an accessory item these controls may have
different features; refer to instructions included with the control.