DriSteem RL-3 User manual

RL Series
DEHUMIDIFIER
DEHUMIDIFIER
Installation, Operation, and
Maintenance Manual
Read and save these instructions

2DEHUMIDIFIER 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 38.

3
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
• Dehumidifier Brochure
• 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
Unpacking the dehumidifier .................................8
Included in the shipping carton ...............................9
SPECIFICATIONS ............................................................10
Models, capacities, and electrical specifications ..................10
Dimensions ............................................14
INSTALLATION .............................................................15
Selecting a location .....................................15
Mounting .............................................16
RL-3, RL-4, and RL-6 mounting ............................18
RL-3, RL-4, and RL-6 trapeze mount ........................20
RL-9 mounting .......................................22
RL-14 mounting ......................................23
RL-31 mounting ......................................24
Drain installation (Models RL-14 and RL-31) .....................25
Duct installation.........................................28
Model RL-9 duct installation .............................29
Model RL-14 duct installation ............................32
Model RL-31 duct installation ............................35
Hard wire - line voltage (RL-9, RL-14, and RL-31 only) ..............38
System set-up & checkout ..................................40
Wiring and setup of the D77 controller ........................42
Alternative external control or DriSteem BACnet®humidistat..........44
Daisy chain wiring ......................................45
MAINTENANCE ............................................................47
TROUBLESHOOTING.........................................................49
REPLACEMENT PARTS ........................................................52
Model RL-3 ............................................52
Model RL-4 ............................................54
Model RL-6 ............................................56
Model RL-9 ............................................58
Model RL-14 ...........................................60
Model RL-31 ...........................................62
WARRANTY ...............................................................64

4DEHUMIDIFIER 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: DEHUMIDIFIER CONTROL FIGURE 4-2: MODEL RL-3 DEHUMIDIFIER
Inlet Filter Access Door Drain
Dehumidifier Control Outlet
FIGURE 4-3: MODEL RL-4 DEHUMIDIFIER
Dehumidifier Control
Inlet Filter
Access Door
Drain
Outlet

5
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dehumidifer Control
Inlet
Filter
Drain
Outlet
90-2393
Product overview
FIGURE 5-2: MODEL RL-9 DEHUMIDIFIER
FIGURE 5-1: MODEL RL-6 DEHUMIDIFIER
Dehumidifier Control
Inlet Filter Access Door Drain
Outlet
RL-6 angle
OVERVIEW

6DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OVERVIEW
Product overview
FIGURE 6-1: MODEL RL-14 DEHUMIDIFIER
Dehumidifier Control
Inlet
Filter
Outlet
90-2432

7
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Product overview
OVERVIEW
Dehumidifier Control
Electrical Panel
Access Door
Inlet
Filter
Outlet
90-2528
FIGURE 7-1: MODEL RL-31 DEHUMIDIFIER

8DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
UNPACKING THE DEHUMIDIFIER
Disassemble the carton, but leave the unit attached to the
pallet for installing the unit with a forklift or scissors lift.
IMPORTANT:
• For Models RL-3, RL-4, RL-6, and RL-9, cut the strap
securing the compressor shipping support bracket and
remove the strap and shipping bracket. Reinstall screws
for RL-6 and RL-9. See Figures 8-1 and 8-2.
Unpacking the dehumidifier
90-1908
OVERVIEW
FIGURE 8-1: MODELS RL-3 AND RL-4 REMOVE SHIPPING
BRACKET
90-2013
FIGURE 8-2: MODELS RL-6 AND RL-9 REMOVE SHIPPING
BRACKET
Remove shipping bracket
Cut off
plastic
strap
Remove screws (2), discard
shipping bracket, reinstall
screws (2)
Cut off
plastic
strap

9
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Included in the shipping carton
Table 9-1:
Included in the shipping carton
Model
RL-3
Model
RL-4
Model
RL-6
Model
RL-9
Model
RL-14
Model
RL-31
Dehumidifier √ √ √ √ √ √
Installation Manual √ √ √ √ √ √
Hanging brackets - - - √ √ √
3/4" (DN20) P-Trap - - - - √ √
3/4" MNPT x 3/4" (DN20
x 20 mm) female pipe - - - - √ √
3/4" MNPT x 3/4" (DN20
x 20 mm) hose barb fitting √ √ √ √ - -
3/4" x 3/4" x 3/4"
(DN20 x DN20 x DN20)
T-fitting
- - - - √ √
30' (9.2 m) of thermostat
cable - - - √ √ √
MERV 11 disposable filter √ √ √ √ √ √
Inlet/outlet duct collars √ √ √ - - -
10' (3 m) of 3/4" (DN20)
drain tube √ √ √ √ - -
OVERVIEW

10 DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Models, capacities, and electrical specifications
Table 10-1:
RL Series Specifications
Model RL-3 Model RL-4 Model RL-6 Model RL-9 Model RL-14 Model RL-31
Capacity(1) 70 pints/day
(3 lb/hour)
100 pints/
day
(4 lb/hour)
130 pints/
day
(6 lb/hour)
210 pints/day
(9 lb/hour)
320 pints/day
(14 lb/hour)
340 pints/
day
(15 lb/
hour)
710 pints/day (31 lb/hour)
Voltage
120 VAC,
1 Phase,
60 HZ
120 VAC,
1 Phase,
60 HZ
120 VAC,
1 Phase,
60 HZ
208-240 VAC,
1 Phase,
60 HZ
208-240 VAC,
1Phase,
60 HZ
277 VAC,
1Phase, 60
HZ
208-240 VAC,
1 Phase,
60 HZ
277 VAC,
1Phase,
60 HZ
Operating
Current (1)
5.8A
240 VAC
6.9A
240 VAC
8.3A
240 VAC
8.6A
240 VAC
11.1A
240 VAC
9.2A
277 VAC
19.6A
240 VAC
17.4A
277 VAC
Rated Current - - - - 20 amp breaker 24A (install on dedicated
30A circuit)
Efficiency (1)
2.1 L/kWh
(4.4 pints/
kWh)
2.6 L/kWh
(5.5 pints/
kWh)
2.8 L/kWh
(5.9 pints/
kWh)
2.9 L/kWh
(6.1 pints/
kWh)
2.9 L/kWh
(6.1 pints/
kWh)
2.5 L/kWh
(5.3 pints/
kWh)
3.0 L/kWh
(6.3 pints/kWh)
Recommended
Breaker Size 15A 15A 15A 15A 20A 20A 30A 30A
Recommended
Wire Gauge
14 AWG,
Copper
14 AWG,
Copper
14 AWG,
Copper
14 AWG,
Copper
12 AWG,
Copper
12 AWG,
Copper
10 AWG,
Copper
10 AWG,
Copper
Maximum Fuse
or Breaker Size
(MOC)
- - - 19A 30A or lower 25A or
lower
40A at 208V
35A at 240V 30A
Minimum Circuit
Ampacity (MCA) - - - 11A 21.9A at 208V 18.5A 28A at 208V 25A at 240V 21A
Operating
Temperature
Range
50°F to 104°F (10°C to 40°C), 60°F/40% RH to 85°F/80% RH (15.6°C/40% RH to 25.9°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) 36°F (2°C)
Operating
Weight
56 lbs
(25 kg)
64 lbs
(29 kg)
98 lbs
(45 kg)
85 lbs
(39 kg) 180 lbs (82 kg) 360 lbs (163 kg)
Shipping Weight 84 lbs
(38 kg)
87 lbs
(40 kg)
129 lbs
(59 kg)
118 lbs
(54 kg) 214 lbs (97 kg) 385 lbs (175 kg)
Drain Size 3/4" FNPT
Filter
(MERV 11)
8" x 11.75"
x 1"
11.88" x
13.5" x 1"
14" x 19"
x 1"
14" x 18"
x 2" 20"x22"x2" 30" x 32" x 2"
Airflow @0.0"
ESP
200 CFM
(340 m3/h)
280 CFM
(476
m3/h)
310 CFM
(527 m3/h)
525 CFM
(892 m3/h) 830 CFM (1410 m3/h) 1760 CFM (2990 m3/h)
Power cord Units shipped with 8' (2.43 m) power cord Units shipped with 10' (3.05 m) power cord or can be hard wired.
Dehumidifier
control 50°F and 104°F (10°C to 40°C) cut off
External control On/off dry contact
(1) Rated capacity and energy factor test done and current draw measured in accordance with AHAM DH-1 2008 at 80°F (26.7°C), 60% RH inlet
air at 0.0 ESP.
SPECIFICATIONS

11
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table 10-1:
RL Series Specifications
Model RL-3 Model RL-4 Model RL-6 Model RL-9 Model RL-14 Model RL-31
Capacity(1) 70 pints/day
(3 lb/hour)
100 pints/
day
(4 lb/hour)
130 pints/
day
(6 lb/hour)
210 pints/day
(9 lb/hour)
320 pints/day
(14 lb/hour)
340 pints/
day
(15 lb/
hour)
710 pints/day (31 lb/hour)
Voltage
120 VAC,
1 Phase,
60 HZ
120 VAC,
1 Phase,
60 HZ
120 VAC,
1 Phase,
60 HZ
208-240 VAC,
1 Phase,
60 HZ
208-240 VAC,
1Phase,
60 HZ
277 VAC,
1Phase, 60
HZ
208-240 VAC,
1 Phase,
60 HZ
277 VAC,
1Phase,
60 HZ
Operating
Current (1)
5.8A
240 VAC
6.9A
240 VAC
8.3A
240 VAC
8.6A
240 VAC
11.1A
240 VAC
9.2A
277 VAC
19.6A
240 VAC
17.4A
277 VAC
Rated Current - - - - 20 amp breaker 24A (install on dedicated
30A circuit)
Efficiency (1)
2.1 L/kWh
(4.4 pints/
kWh)
2.6 L/kWh
(5.5 pints/
kWh)
2.8 L/kWh
(5.9 pints/
kWh)
2.9 L/kWh
(6.1 pints/
kWh)
2.9 L/kWh
(6.1 pints/
kWh)
2.5 L/kWh
(5.3 pints/
kWh)
3.0 L/kWh
(6.3 pints/kWh)
Recommended
Breaker Size 15A 15A 15A 15A 20A 20A 30A 30A
Recommended
Wire Gauge
14 AWG,
Copper
14 AWG,
Copper
14 AWG,
Copper
14 AWG,
Copper
12 AWG,
Copper
12 AWG,
Copper
10 AWG,
Copper
10 AWG,
Copper
Maximum Fuse
or Breaker Size
(MOC)
- - - 19A 30A or lower 25A or
lower
40A at 208V
35A at 240V 30A
Minimum Circuit
Ampacity (MCA) - - - 11A 21.9A at 208V 18.5A 28A at 208V 25A at 240V 21A
Operating
Temperature
Range
50°F to 104°F (10°C to 40°C), 60°F/40% RH to 85°F/80% RH (15.6°C/40% RH to 25.9°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) 36°F (2°C)
Operating
Weight
56 lbs
(25 kg)
64 lbs
(29 kg)
98 lbs
(45 kg)
85 lbs
(39 kg) 180 lbs (82 kg) 360 lbs (163 kg)
Shipping Weight 84 lbs
(38 kg)
87 lbs
(40 kg)
129 lbs
(59 kg)
118 lbs
(54 kg) 214 lbs (97 kg) 385 lbs (175 kg)
Drain Size 3/4" FNPT
Filter
(MERV 11)
8" x 11.75"
x 1"
11.88" x
13.5" x 1"
14" x 19"
x 1"
14" x 18"
x 2" 20"x22"x2" 30" x 32" x 2"
Airflow @0.0"
ESP
200 CFM
(340 m3/h)
280 CFM
(476
m3/h)
310 CFM
(527 m3/h)
525 CFM
(892 m3/h) 830 CFM (1410 m3/h) 1760 CFM (2990 m3/h)
Power cord Units shipped with 8' (2.43 m) power cord Units shipped with 10' (3.05 m) power cord or can be hard wired.
Dehumidifier
control 50°F and 104°F (10°C to 40°C) cut off
External control On/off dry contact
(1) Rated capacity and energy factor test done and current draw measured in accordance with AHAM DH-1 2008 at 80°F (26.7°C), 60% RH inlet
air at 0.0 ESP.
SPECIFICATIONS
Specifications
Table 11-1:
RL Series Specifications
Model RL-3 Model RL-4 Model RL-6 Model RL-9 Model RL-14 Model RL-31
Duct Kit Included Optional
Feet Attached Optional
Hanging Kit Optional Included Built-in
Drain Trap - Included
Air Discharge End Top or end End
Onboard Controller Front Field-interchangeable from top to front Front
D77 Controller Optional
BACnet Humidistat
(Room) Controller Optional
BACnet Humidistat
(Duct) Controller Optional

12 DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
FIGURE 12-2: MODEL RL-4 DEHUMIDIFIER DIMENSIONS
Dimensions
FIGURE 12-1: MODEL RL-3 DEHUMIDIFIER DIMENSIONS
90-2289_RL-3
90-2612
BACK
TOP
34 (864 mm)
10
(254 mm)
26 (660 mm)
4 (102 mm)
1.25 to 2
(32 to 50 mm)
BACK
TOP
32.88 (835 mm)
4 (102 mm)
ø0.75 (20 mm)
pipe inside
4
(102 mm)
0.38 to 2 (10 to 50 mm)
ø0.75 (20 mm) pipe inside
4 (102 mm)
14 (356 mm)
10
(254 mm)
24.88 (632 mm)
8
(203 mm)
12.5
(318 mm)
12.5 (318 mm)
8
(203 mm)
15
(381 mm)
SPECIFICATIONS

13
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
FIGURE 13-2: MODEL RL-9 DEHUMIDIFIER DIMENSIONS
Dimensions
FIGURE 13-1: MODEL RL-6 DEHUMIDIFIER DIMENSIONS
90-2394
90-2053
Up to 1/2" (13 mm) diameter rod
18.85 (479 mm)
BACK
TOP
27.09 (688 mm)
30.53 (775 mm)
19.49 (495 mm)
21.73 (552 mm)
22.73 (577 mm)
BACK
TOP
38.06 (967 mm)
30.06 (763 mm) 3.94 (100 mm)
ø10 (254 mm)
ø0.75 (20 mm)
pipe inside
19.5 (495 mm)
4.06
(103 mm)
ø10
(254 mm)
18.75 (476 mm)
19.38 (492 mm)
1.38 to 2
(35 to 50 mm)
SPECIFICATIONS

14 DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
90-2529
FIGURE 14-2: MODEL RL-31 DEHUMIDIFIER DIMENSIONS
Dimensions
34-13/32 (874 mm)
BACK
TOP
Up to 1/2" (13 mm) diameter rod
30 (762 mm)
31-23/32 (804 mm)
42-11/16 (1084 mm)
43-25/32 (1112 mm)
44-7/8 (1140 mm)
15-23/32
(399 mm)
ø 3/4" (DN20) FNPT drain
6-1/4 (159 mm)
FIGURE 14-1: MODEL RL-14 DEHUMIDIFIER 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
SPECIFICATIONS

15
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Selecting a location
INSTALLATION
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 on all sides for airflow and to
allow for access to the user interface, electrical panel for service and filter
for maintenance. Leave 20" (508 mm) for filter access (either side) on the
Model RL-6.
90-2530
FIGURE 15-1: SPACE CLEARANCES
(ALL MODELS)
Electrical
service panel
18"
(457mm)
minimum
18" (457mm)
recommended
Inlet side
Model RL-31
shown

16 DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
FLOOR MOUNTING
The leveling feet kit (if 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.
Mounting
INSTALLATION
FIGURE 16-1: RL-14 FLOOR MOUNTING USE LEVEL FEET KIT (PART #601175)
90-2443 90-2438
Blocking must be used for p-trap clearance
3-1/4" (83 mm)
Brackets
(Included)
Leveling
feet (sold
separately)

17
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
PARTS
INCLUDED
IN KIT
90-2533
90-2532
FIGURE 17-1: MODEL RL-31 FLOOR MOUNTING USING LEVELING FEET KIT (PART #: 601175)
Blocking must be used for p-trap clearance
3-1/4" (83 mm)
INSTALLATION
Mounting

18 DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
RL-3, RL-4, and RL-6 mounting
90-2014
90-2014
FIGURE 18-2: MODEL RL-3, RL-4 AND RL-6 HANGING
INSTALL
CONTROL LOCATION
For floor mount installation, leave the control mounted to
the top of the unit. For suspended installations, it will be
easier to see if the control is relocated to the front of the
unit.
To move the control:
1. Remove the front control panel cover.
2. Remove the filter access door and filter.
3. Detach the on-board control by removing the four
(4) screws around the control. NOTE: Use one hand
to support the bottom of the on-board control when
removing.
4. Keep the control in the unit and relocate to the front
access hole.
5. Secure the control with the same four screws used to
attach the control to the top of the unit.
6. Secure the control panel cover to the top of the unit.
DUCT COLLARS
If suspending the unit, attach the inlet and outlet duct
collars as shown in Figures 18-1 and 18-2; the outlet
cover does not need to be moved. If placing the unit on
the floor, remove the outlet cover and install the outlet
collar to the top of the unit, relocate the cover to the end
of the unit (see Figure 18-1), and attach the inlet duct
collar.
90-2017
FIGURE 18-1: RL-4 AND RL-6 CONTROL LOCATION
FIGURE 18-3: RL-4 AND RL-6 FLOOR MOUNT INSTALL
Control
Control
Panel
Cover
Control
Control Panel
Cover
Filter access door
Outlet cover
Inlet
duct
collar
Outlet duct
collar with
back draft
damper
Inlet
duct
collar
Move outlet
cover and
install duct
collar to top
discharge
location

19
DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
RL-3, RL-4, and RL-6 mounting
90-2020
MODEL RL-3, RL-4 AND RL-6 LOCATION
CONSIDERATIONS
• Allow sufficient clearance for filter
removal and to prevent airflow
obstruction
• Electrical service access will
require the removal of the side
panel shown. Allow sufficient
space for service on this side of
the unit.
• When suspending the unit, a
condensate pan with float switch is
recommended to prevent any leaks
that may occur due to unforeseen
drain line obstructions.
FIGURE 19-3: RL-3, RL-4 AND RL-6 FILTER ACCESS CLEARANCE
TOP
18 (457 mm)
minimum
clearance for
proper air
flow
18" (457mm) minimum
Model RL-6: 20 (508 mm)
minimum clearance for filter
(either side)
Filter
Electrical service access this side

20 DEHUMIDIFIER INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
FIGURE 20-1: RL-3, RL-4 AND RL-6 TRAPEZE MOUNT
RL-3, RL-4, and RL-6 trapeze mount
A
D
C
B
Table 20-1:
Trapeze mount dimensions
601299 601300
A Width 18" (457 mm) 27" (686 mm)
B Inside Rail Width 5.75" (146 mm) 10.5" (267 mm)
C Outside Rail Width 8.75" (222 mm) 13.5" (343 mm)
D Length 29.88" (759 mm) 38" (965 mm)
Table 20-2:
Trapeze mount specifications
601299 601300
Width 18" (457 mm) 27" (686 mm)
Height 3" (76 mm) 3" (76 mm)
Length 29.88" (759 mm) 38" (965 mm)
Weight 13 lbs. (5.9 kg) 18 lbs. (8.2 kg)
Operating weight
(working load) 400 lbs. (181 kg) 400 lbs. (181 kg)
Shipping weight 14.6 lbs. (6.6 kg) 19.7 lbs. (8.9 kg)
INSTALLATION