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6
Installation & Operation Instructions 800.558.1711
The B70DHV plugs into a common grounded 115VAC outlet. The device draws 5.1 Amps at 80°F and 60%
RH. Locate the dehumidier in an area where the cord’s length (9') easily reaches a 115 VAC electrical
outlet with a minimum of 15 Amp circuit capacity. If used in an area that may become wet, a GFCI protected
circuit is recommended. Consult local electrical codes for any further information.
There are multiple control devices that can be used with B70DHV. The controls are to be located
remotely from the dehumidier and placed in the space to be conditioned. Low voltage (24 Volt) controls can be
used with the B70DHV and MUST be connected with low voltage (18-22 gauge) thermostat wire.
ELECTRICAL REQUIREMENTS
CAUTION!CAUTION!
DO NOT ALLOW THE 24V TERMINAL TO CONTACT THE COM/DMPR TERMINALS ON THE
B70DHV OR DAMAGE TO THE TRANSFORMER WILL RESULT.
Electrical Precautions
• Do not install the control where it may not accurately sense the relative humidity such as near HVAC
supply registers, near exterior doors, on an outside wall, near a window, or near a water source.
• The screw terminals on the B70DHV and the control are labeled to prevent confusion.
• Be sure to consult the electrical schematic in the CONTROLS Section (page 12) of this manual or
inside the access panel of the B70DHV before making control connections.
WARNING!WARNING!
THE REMOTE CONTROLS OF THE B70DHV ARE POWERED BY A LOW VOLTAGE CIRCUIT (24VAC)
AND MUST NEVER CONTACT OR BE CONNECTED TO A HIGH VOLTAGE CIRCUIT.
CAUTION!CAUTION!
SOME OF THE SCREWS TERMINALS ON THE B70DHV MAY NOT BE USED WITH
CERTAIN CONTROLS AND SHOULD BE LEFT UNCONNECTED.
Wiring Schematic
C
COMPRESSOR
COMPRESSOR
CAPACITOR
WHT-3
S
YEL-7
BLK-4
24VAC
LINE
COM
COM
WHT-2
TRANSFORMER
N.C.
N.O.
COM
COIL
BLK-13
FAN RELAY
GRN-1
BLK-6
BLK-11
DEFROST
SWITCH
COMPRESSOR
RELAY
DEHUMIDISTAT
R
FAN
BLU-9
GRN-15
BRN-14BLK-13
FAN
CAPACITOR
RED CIRCUIT IS 24VAC CONTROL CIRCUIT
4038488 Rev. B
GRN-25
RED-20
RED-8
RED-8
BLK-28
RED-20
BLK-28BLK-10BLK-11
BLK-5
BLU-19YEL-33
YEL-17
RED-23
YEL-16
RED-23
RED-24
CIRCUIT
BREAKER
24V
RED-21
COM
DMPR
DEHU
BLU-18
FAN
RED-24
RED-21
BLK-10
BLK-12
BLK-12
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