DriSteem RL-14 User manual

RL-14
DEHUMIDIFIER
CDS DEHUMIDIFIER
Installation, Operation, and
Maintenance Manual
Read and save these instructions

2CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNING CAUTION
Indicates a hazardous situation that could result in death or
serious injury if instructions are not followed.
Indicates a hazardous situation that could result in damage to or
destruction of property if instructions are not followed.
WARNING
• High voltage may cause serious injury from electric shock. Disconnect electrical power before starting installation or
servicing. Leave power disconnected until installation/service is completed.
• Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.
• Dropping may cause personal injury or equipment damage. Handle with care and follow installation instructions.
Warnings and cautions
CAUTION
• Read all instructions before beginning installation.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not
play with the appliance.
• Do not use in pool applications. Pool chemicals can damage the dehumidifier.
• Do not use solvents or cleaners on or near the circuit board. Chemicals can damage circuit board components.
• Wait 24 hours before running the unit if it was not shipped or stored in the upright position.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons
in order to avoid a hazard.
• If hard wiring the appliance, install a disconnect within eyesight of the appliance which provides full disconnection
under overvoltage category III conditions. Refer to local and national codes and full instructions on page 16.

3
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table of contents
ATTENTION INSTALLER
Read this manual before installing.
Leave manual with product owner.
DriSteem®Technical Support
800-328-4447
WHERE TO FIND MORE INFORMATION
Our web site:
The following documents are available on our
web site: www.dristeem.com
• CDS Dehumidifier Brochure
• CDS Dehumidifier IOM
Call us at 800-328-4447
Obtaining documents from our web site is the
quickest way to view our literature.
Learn More
OVERVIEW.................................................................4
Product overview.........................................4
Models, capacities, and electrical specifications ...................5
SPECIFICATIONS .............................................................5
INSTALLATION ..............................................................6
Dimensions .............................................6
Selecting a location ......................................7
Mounting ..............................................8
Drain installation ........................................10
Duct.................................................12
Hard wire - line voltage ...................................16
D77 controller wiring and setup .............................18
Alternative external control or DriSteem BACnet®humidistat..........20
Daisy chain wiring ......................................21
Operating the dehumidifier.................................24
TROUBLESHOOTING.........................................................28
Model RL-14 ...........................................29
REPLACEMENT PARTS ........................................................30
WARRANTY ...............................................................32

4CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
ON/OFF button
used to turn
dehumidifier on
and off
Up/Down
buttons used
to change
humidity setting
MODE button
used for
optional features
Product overview
OVERVIEW
FIGURE 4-1: CDS DEHUMIDIFIER
Dehumidifier Control
Inlet
Filter
Outlet
90-2432

5
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Models, capacities, and electrical specifications
SPECIFICATIONS
Table 5-1:
Model RL -14 Specifications
Capacity
40 gallons/day
(13.9 lb/h/320 pints/day) @
80°F (26.7°C), 60% RH
42.5 gallons/day
(14.7 lb/h/340 pints/day) @ 80°F (26.7°C), 60% RH
Airflow 830 CFM (1410m3/h) (free flow)
Voltage 208 - 240 VAC, 1 Phase, 60 HZ 277 VAC, 1Phase, 60 HZ
Operating Current 11.1A @ 80°F (26.7°C), 60%
RH, 240 VAC 9.2A @ 80°F (26.7°C), 60% RH,277 VAC
Rated Current 20 amp breaker
Efficiency 2.9 L/kWh 2.5 L/kWh
Operating Temperature Range 50°F to 104°F (10°C to 40°C), 60°F (15.6°C) @ 40% RH to 85°F (29.4°C) @ 80% RH
(ideal conditions for unit to not go into defrost or shut down due to high pressure)
Operating Dew Point Lower Limit 40°F (4°C)
Dimensions
Width: 32.63" (829 mm)
Height: 24" (610 mm)
Length: 24.25" (616 mm)
Weight 180 lbs (82 kg) (without packaging)
Drain Size 3/4" FNPT (DN 20)
Filter MERV 11 (20"x22"x2")
Power cord Units shipped with 10' (3m) power cord or can be hard wired.
Refrigerant R410A
Dehumidifier control 50°F and 104°F (10°C to 40°C) cut off
External control On/off dry contact

6CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
FIGURE 6-1: RL-14 DEHUMIDIFIER DIMENSIONS
Dimensions
BACK
TOP
37" (940 mm)
90-2433
24" (610 mm)
17-5/8" (448 mm)
25" (635 mm)
35" (889 mm)
32-11/16" (830 mm)
1-11/16"
(43 mm)
ø3/4" (19 mm) FNPT drain
4-7/16" (113 mm)
Up to 1/2" (13 mm) diameter rod

7
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
UNPACKING THE DEHUMIDIFIER
Use the cutline on the carton to pull carton off dehumidifier.
INCLUDED IN THE CARTON
• Dehumidifier
• Installation manual
• 3/4" (DN20) P-Trap
• 3/4" MNPT x 3/4" (DN20 x 20 mm) female pipe
• 3/4" x 3/4" x 3/4" (DN20 x DN20 x DN20) T-fitting
• 30 feet of thermostat cable
• MERV 11 filter
• Hanging brackets
• Model D77 control (ships separately, if selected)
LOCATION CONSIDERATIONS
This unit is not to be accessible to the general public. The dehumidifiers should
be spaced evenly throughout the area to be dehumidified with the following
recommendations:
1. Avoid placement where the discharge of one dehumidifier is pointing
toward the inlet of another.
2. Avoid locating the dehumidifier inlet too near a supply register. Space is
not usually available to totally avoid this, but minimizing the amount of
cold air that is discharged to the dehumidifier inlet will improve moisture
removal performance of the dehumidifier.
3. Account for handling dehumidifier condensate by considering drain or
condensate pump locations.
4. Leave 18" (457 mm) minimum clearance for access to the user interface,
electrical panel for service and filter for maintenance. See Figure 7-1.
FIGURE 7-1: SPACE CLEARANCES
Selecting a location
INSTALLATION
Electrical
service panel
FIGURE 7-2: D77 CONTROLLER
18"
(457mm)
minimum
Inlet side
90-2434
18"
(457mm)
minimum

8CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Mounting
INSTALLATION
90-2435 90-2436
90-2437
INSTALL BRACKETS FOR SUSPENDING UNIT
The brackets are designed to accommodate up to 1/2" threaded rod.
1. Insert bracket into slots on the base. See Figure 8-1.
2. Rotate the bracket up toward the dehumidifier and secure the bracket to
the side of the dehumidifier using #12 sheet metal screws (provided). This
can be done with a 5/16" hex socket. See Figure 8-2.
3. Repeat for remaining three brackets.
FIGURE 8-1: INSTALL MOUNTING BRACKET IN BASE FIGURE 8-2: SECURE BRACKET TO DEHUMIDIFIER
Insert bracket into
openings on bottom
of unit (4 places)
Rotate bracket into
place and secure
with screws provided
HANGING THE DEHUMIDIFIER
Use the threaded rod to suspend the unit from appropriate
ceiling structure. The unit weight is 180 lbs. Install
vibration isolators if located in an area where noise could
be a concern. Level unit right to left and front to back so
that unit drains properly. See Figure 8-3.
FIGURE 8-3: SUSPENSION
4x vibration
isolators
(optional)

9
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
FIGURE 9-1: FLOOR MOUNTING USING LEVELING FEET KIT (PART #: 601175)
FLOOR MOUNTING
The leveling feet kit (not included) is required for floor mounting. The drain
hose/pipe must continuously slope downward toward the drain. Use solid
supports as needed to elevate the unit enough to allow for continuous drain
slope. Use the adjustable feet to level the unit right to left and front to back so
that unit drains properly.
1. Insert nut into the bracket on the dehumidifier.
2. Thread leveling foot into nut to desired height.
3. Lock into place by tightening jam nut.
Mounting
90-2443 90-2438
Blocking must be used for p-trap clearance
3-1/4" (83 mm)
Included with
dehumidifier

10 CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Drain installation
INSTALLATION
3/4" MNPT x 3/4" BARB
(INCLUDED)
3/4" FEMALE PIPE x 3/4" FNPT
(INCLUDED)
3/4" MNPT x
3/4" FEMALE PIPE
(INCLUDED)
3/4" FLEXIBLE TUBE
(INCLUDED)
90-2438
PVC HARD PIPE
(NOT INCLUDED)
OPTIONAL VACUUM BREAK
HIGHER THAN
FILTER FRAME
3/4" PIPE TEE (INCLUDED)
3/4" MNPT x
3/4" FEMALE PIPE
(INCLUDED)
P-TRAP (INCLUDED)
The blower draws air through the dehumidifier, putting the cabinet under
negative pressure. As a result, the included P-trap is required for proper
draining. The installed drain fitting on the dehumidifier is 3/4" (DN20) FNPT.
Use the included fittings to trap and install the drain. See Figure 10-1. The
drain tubing can be hard pipe or flexible tubing. NOTE: PTFE thread seal tape
is recommended for the threaded connections and hand tighten only. Use PVC
primer and cement for all slip fit connections to prevent leaks. After installing
the drain connections, trap, and tubing, pour enough water, about 32 oz.
(950 mL) into the dehumidifier drain pan to prime the trap.
If the drain tubing will be installed to a condensate pump, or if a common
drain tube will serve multiple dehumidifiers or air conditioners, a vacuum
breaker is recommended to prevent the p-trap from being unintentionally
siphoned. Install a T-fitting with a short section of drain tubing pointed vertically
and extending above the start of the filter (see Figure 10-1). Install the
vacuum breaker after the P-trap.
FIGURE 10-1: DRAIN ASSEMBLY

11
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Drain installation
FLOAT
Switch
DH DH
NORMALLY CLOSED
FLOAT SWITCH
90-1857
CONDENSATE PAN, CONDENSATE PUMP AND FLOAT SWITCH
A condensate pan is recommended when suspending the dehumidifier over
finished areas or product. Adhere to local codes regarding draining of the
condensate pan. If a condensate pump is needed, install it in the condensate
pan (user provided) as well.
Install a condensate overflow safety switch (i.e. float switch) in the condensate
pan (user provided), remove the factory installed jumper wire between
the Float Switch terminals on the control and wire the float switch to the
dehumidifier as shown in Figure 11-1. Overflow safety switches on
condensate pumps can be wired to the Float Switch terminals in a similar
fashion.
FIGURE 11-1: FLOAT SWITCH WIRING TO USER INTERFACE

12 CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Duct
INSTALLATION
INLET ADAPTER PLATE
INLET HOUSING
FILTER DOOR
OUTLET HOUSING
OUTLET ADAPTER PLATE
90-2575
CAUTION
Sharp edges may cause serious injury from cuts. Use care
when cutting plenum openings and handling duct work.
NOTICE
• Failure to follow ducting guidelines may negatively
impact unit performance.
• Minimize equivalent duct length to maximize unit
capacity and efficiency.
AIRFLOW DELIVERY SPECIFICATIONS
• Nominal airflow through dehumidifier is 830 cfm
(1410 m3/h).
• Airflow decreases as duct length and bends increase,
therefore if the equivalent duct length is too long the
dehumidifier will cease to function properly.
FIGURE 12-1: DUCT ASSEMBLY

13
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Duct
90-2576
• If using registers and diffusers, the total open area must
be at least 255 in2 (1645 cm2), which is the equivalent
area to a 18 inch (457 mm) round.
• When locating registers and diffusers be aware of the
following;
• Relative to other dehumidifier inlets/outlets – must
be a minimum 10 feet (3 m) apart and do not direct
toward one another.
• Relative to HVAC diffusers – ensure minimum 10
foot (3 m) distance from other HVAC diffusers.
• For agriculture applications – do not directly vent
onto plants.
• Ensure that the ductwork is supported within 2 feet
(0.6 m) of inlet and outlet of the dehumidifier. Consult
building codes and standards for duct support
requirements beyond 2 feet (0.6 m) of the dehumidifier.
DUCT SIZING AND ROUTING
• Inlet and outlet collars fit 18" (457 mm) round duct.
• Unit performance decreases as airflow decreases,
the shortest possible duct lengths with minimal bends
should be used.
• Do not exceed 1,000 feet (305 m) of metal duct or
750 feet (229 m) of flex duct.
• Max static pressure is 0.6" w.c. (149 Pa).
• Install the dehumidifier in location where filter door,
service access panel, compressor side panel, and
user interface are accessible.
• Do not install a bend in the ductwork within 2 feet
(0.6 m) of the dehumidifier inlet or outlet.
• When selecting duct material, it is preferred to use
metal ducting to maintain airflow. If flex duct is to be
used, ensure it is extended out as much as possible
to limit disruptions to the airflow. Note:Use only
insulated ducting when the inlet side of the duct
work is located outside of the conditioned space.
In some instances when the dehumidifier is placed
outside of the conditioned space, the cabinet of
the dehumidifier may also need to be insulated to
prevent condensation formation on the exterior of the
unit.
• Do not duct more than one dehumidifier together. See
Figure 13-1.
FIGURE 13-1: DO NOT DUCT MORE THAN ONE DEHUMIDIFIER
IN SERIES
Table 13-1:
Equivalent length of bends
45° bend 5 feet (1.5 m)
90° bend 10 feet (3.0 m)
180° bend 30 feet (9.1 m)

14 CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Duct kit installation
INSTALLATION
ADAPTER PLATE
#6 SCREWS
HOUSING
#10 SCREWS
REMOVE AND DISCARD
FILTER DOOR
THUMB SCREW
90-2577
90-2646
90-2647
DUCT KIT INSTALLATION
1. Install the round adapter plates onto the inlet and
outlet using the #6 (smaller) screws provided. See
Figure 14-1.
2. Attach the assembled components to the dehumidifier
using the #10 (larger) screws provided. The filter
clips must be removed from the inlet side of the
dehumidifier, the duct kit will attach using those holes.
See Figure 14-2.
3. Install the filter access door and secure with the two
thumb screws. See Figure 14-3.
FIGURE 14-1: ALIGN TABS
FIGURE 14-2: ATTACH ASSEMBLED DUCT HOUSING
FIGURE 14-3: INSTALL

15
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Duct
90-2648
REPLACING THE FILTER
1. Loosen the two thumb screws and remove the filter access door.
2. Pull the filter away from the unit, then out through the access opening.
3. Install the new filter in the same direction.
4. Reinstall the filter access door and tighten the thumb screws.
FIGURE 15-1: OVERALL DIMENSIONS WITH DUCT KIT (INCHES)
SIDE
TOP
12.16
(309 mm)
9.93
(252 mm)
10.83
(275 mm)
32.64 (829 mm)
ø17.94
(456 mm)
23.94 (608 mm)
12.42
(315 mm)
30.56 (776 mm)
34.81 (884 mm)

16 CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Hard wire - line voltage
INSTALLATION
L1 L2 G
L1 L2 G
90-2439
United States Installation: Make all electrical connections in accordance
with the current edition of the NEC ANSI/NFPA 70 and any local codes or
ordinances that may apply.
Canada Installation: Make all electrical connections in accordance with the
current edition of the Canadian Electrical Code CSA C22.1 and any local
codes or ordinances that may apply.
The RL-14, 240V dehumidifier comes with a power cord that has a NEMA
6-20P plug that can simply be plugged into a corresponding NEMA 6-20R
receptacle. The RL-14, 277V dehumidifier comes with a power cord that has a
NEMA L7-20P plug that can simply be plugged into a corresponding NEMA
L7-20R receptacle. The plug can be removed and replaced by hard-wired
electrical service if desired.
1. Disconnect electrical service at the main fuse or circuit breaker.
2. Run electrical service to where the dehumidifier is to be installed following
all required local and national codes and standards.
3. Remove the electrical service side panel (see Figure 16-1).
4. Loosen the terminal screws securing the power cord wires to the terminal
blocks and ground lug.
5. Use channellock pliers to remove the strain relief and power cord from the
unit. Pinch the side of the strain relief to release it from the opening in the
sheet metal and pull it away from the dehumidifier.
6. Route the service wires through the opening in the dehumidifier and secure
the cable or conduit to the opening in the dehumidifier using fittings/
clamps intended for the conduit/cable used.
7. Insert the black service wire into the L1 terminal and the white service wire
into the L2 terminal. Release levers to lock into place.
8. Insert the ground wire (bare or green) of the electrical service into the
ground lug and secure it in place by tightening the ground lug screw.
9. Reattach the electrical service side panel to the dehumidifier.
10.Restore electrical service at the fuse or circuit breaker.
CAUTION
If the supply cord is damaged, it must
be replaced by the manufacturer, its
service agent or similarly qualified
persons in order to avoid a hazard.
Table 16-1:
Electrical specifications
Model RL-14
Voltage 208-240 VAC,
single phase, 60Hz
277 VAC,
single phase, 60Hz
Recommended Breaker Size 20A 20A
Recommended Wire Gauge 12 Gauge, Copper 12 Gauge, Copper
Maximum Fuse or Breaker
Size (MOC) 30A or lower 20A or lower
Minimum Circuit Ampacity
(MCA) 19A at 208V 15A at 277V
FIGURE 16-1: POWER CORD WIRING
Connect the line
(blk) and neutral
wire (wht) wires to
the power block.
Connect
the bare
or green
ground
wire to the
ground
lug
Disconnect
power cord
wires
Electrical
service panel
Hard
wiring
access

17
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Field wiring: control input
INSTALLATION
Wire a control signal according to the desired control mode. Allowed control
signals include:
• On-board control - default
No control wiring needed. The dehumidifier will run based on the internal
RH sensor and setpoint as set from the on-board keypad. Air Sampling rate
and RH offset may be adjusted.
• DriSteem D77 humidistat (REMOTE)
The D77 controller will control the dehumidifier based on its own RH sensor
and setpoint. Any errors will show on the local control and on the D77 as
individual error codes.
• DriSteem BACnet humidistat (EXTERNAL)
The BACnet humidistat will use its own RH sensor or a remote duct sensor
and its own setpoint to control the dehumidifier on or off via a dry contract
on the dehumidifier. The setpoint can be adjusted locally or by BACnet. A
single alarm will show for any error on the dehumidifier.
• External
Any other humidity control system that has a dry contact, normally open
output dedicated to controlling the dehumidifier.
See the appropriate section for wiring the control input and selecting the
desired mode of operation.

18 CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
+ - A B ODT
SensorRemote
Gh Rf Cf Gs YW
HVAC EQUIP.
MODEL D77
CONTROL
DH
DH
R/+
C/-
B
A
90-2490
D77 controller wiring and setup
The Model D77 will measure the relative humidity and turn the dehumidifier on
and off to control the humidity level to the desired setting. The humidity setting
can be adjusted from the control, while the display allows easy access and
monitoring of the humidity level in the space. Shield the Model D77 from direct
exposure to HPS or LPS lighting.
NOTE: Use 18-22 AWG wire for control wiring.
Humidity can be controlled using the internal dehumidifier control, a Model
D77 control, or a different external control like a thermostat.
Installing an external control eliminates the need to run the dehumidifier blower
for sampling, as the control is constantly measuring the humidity. When the
humidity level rises above the setting, the dehumidifier is turned on. With
internal control, the sampling rate can be set to 15, 30, 45, or 60 minutes.
TO INSTALL AND USE THE MODEL D77 CONTROL, COMPLETE ALL STEPS:
1. Unplug the dehumidifier or turn off power to the circuit at the breaker or
fuse.
2. Run thermostat cable (use 18-22 AWG wire) from the Model D77 to the
control of the dehumidifier.
3. Trim about 1/4" (6 mm) of insulation from the end of the wires on each
end. Insert the wire into the terminals as shown in Figure 18-1.
4. Restore dehumidifier power.
TO SET THE DEHUMIDIFIER TO USE THE MODEL D77 CONTROL, COMPLETE ALL
FIGURE 18-1: MODEL D77 REMOTE CONTROL WIRING

19
CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
FIGURE 19-1: MODEL D77 REMOTE CONTROL WIRING
90-1854
D77 controller wiring and setup
STEPS:
1. With power to the dehumidifier, use the ON/OFF button to set the
dehumidifier to the OFF position.
NOTE: If the display backlight is not on, the first button press (any button)
will only turn the backlight on. Press the button a second time to achieve the
desired function.
2. Hold the MODE button on the on-board control for three seconds to enter
the Installer Set-up Menu.
3. The display should now read REMOTE on the left and DISABLED on the
right. Use the UP or DOWN arrow buttons to set this to ENABLED.
4. Once the display reads REMOTE ENABLED, press the MODE button to
cycle through the other settings until the display blinks DONE for three
seconds.
5. Use the ON/OFF button to turn the dehumidifier ON. The display on your
unit should read REMOTE.
6. Locate the Model D77 that you just set up. On the Model D77, press the
ON button and use the arrow buttons to set your preferred %RH setpoint.
When setting up in REMOTE mode for the first time, your dehumidifier will
wait three minutes before starting to dehumidify, regardless of ambient
conditions.
INSTALLATION

20 CDS DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
FLOAT DH DH
SWITCH
EXTERNAL
CONTROL
90-2542
TO SET THE DEHUMIDIFIER TO USE THE ALTERNATIVE
CONTROL, COMPLETE ALL STEPS:
1. With power to the dehumidifier, use the ON/OFF
button to set the dehumidifier to the OFF position.
NOTE: If the display backlight is not on, the first button
press (any button) will only turn the backlight on. Press
the button a second time to achieve the desired function.
2. Hold the MODE button on the on-board control for
three seconds to enter the Installer Set-up Menu.
3. Press MODE again and the display should change to
EXTERNAL in the center, and DISABLED on the right.
Use the UP or DOWN arrow buttons to set this to
ENABLED.
90-1854
4. Once the display reads EXTERNAL ENABLED, press
the MODE button to cycle through the other settings
until the display blinks DONE for three seconds.
5. Use the ON/OFF button to turn the dehumidifier ON.
The display on your unit should read external. Even if
there is a demand for dehumidification according to
your external control, the dehumidifier will wait three
minutes before turning on for the first time only.
Alternative external control or DriSteem BACnet®humidistat
The DriSteem BACnet humidistat may be used to control
the dehumidifier when set up as an external controller.
Alternatively, use any other humidity control system as long
as it has a dry contact, normally open output dedicated
to controlling the dehumidifier. Reference the installation
literature provided with the alternative control for wiring,
set-up, and operating details.
TO INSTALL AND USE AN EXTERNAL CONTROL,
COMPLETE ALL STEPS:
1. Unplug the dehumidifier or turn off power to the circuit
at the breaker or fuse.
2. Run thermostat cable (use 18-22 AWG wire) from
the alternative external control to the control of the
dehumidifier.
3. Trim about 1/4" (6 mm) of insulation from the end
of the wires on each end. Insert the wire into the
terminals as shown in Figure 20-1.
4. Restore dehumidifier power.
FIGURE 20-1: EXTERNAL CONTROL WIRING