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The Phoenix R250 LGR Dehumidifier
• Coated Coils – For longer life, protection against
corrosion in the harshest environments, and protection
against the loss of the heat transfer properties of the
coil.
• Capacity - The Phoenix R250 removes 135 pints per
day at AHAM, (80°F/60%RH).
• Energy Efficiency - Draws only 8.3 amps and removes
6.0 pints/kWh.
• 310 CFM - Faster drying and superior static pressure
for ducting.
• Hi-Temp Operation - up to 110°F
• Heavy-Duty Condensate Pump.
• Compact Design - 20”x20”x33.5”.
• Telescoping Handle - A heavy-duty retractable handle
for ease of transport and reduces space for storage
and stacking.
• Recessed 12” Wheels - Allows greater maneuverability
on the job site and efficient storage. Rolls over
obstacles with ease.
• Pleated Media Air Filter - A 12”x12”x1” MERV-11 filter
is standard.
• Stacking/Nesting - Reduces space for ease of stacking
and storage.
• Patented ByPass™ Technology - Increased
performance over a wide temperature range.
TS-889
04/22 Rev. C
Phoenix R250
Part No. 4034460
Patent 7,246,503
D570,988
8,069,681
The Phoenix R250 has been redesigned from the inside out
to be a rugged, high-performance dehumidifier. Phoenix is
leading the industry by introducing epoxy coated coils. This
new feature will extend the life of the coil, provide protection
in corrosive environments, and maintain the coil’s heat
transfer ability over the life of the coil.
We kept the outstanding handle used on the R200 along with
patented ByPass™ Technology, excellent airflow, multiple
ducting options, and a pleated media filter. And, with some
amazing Phoenix Engineering, the R250 removes the most
water of the Phoenix rotomolds at 135 pints per day (AHAM)
while drawing only 8.3 amps of electricity, making it one of
the smallest, lightest XL category LGRs on the market.
BYPASS
Patented
Specifications subject to change without notice.
Installation, Operation & Service Instructions
– READ AND SAVE THESE INSTRUCTIONS –
OWNER’S MANUAL
R250 | LGR DEHUMIDIFIER
4201 LIEN RD. • MADISON, WI 53704
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Table of Contents
Introduction ...............................................................................1
1. Safety Certifications .........................................................2
2. Specifications ....................................................................2
3. Operation ............................................................................2
3.1 Transporting ................................................................2
3.2 Location ........................................................................3
3.3 Electrical Requirements ............................................ 3
3.4 Condensate Removal ................................................3
3.5 Ducting .........................................................................3
3.6 Defrost Cycle ............................................................... 3
3.7 Power Button ..............................................................3
3.8 Purge Button ...............................................................3
3.9 Hour Meter ..................................................................3
3.10 Hours Button ............................................................3
3.11 Defrost Light .............................................................4
3.12 Bypass Control .........................................................4
4. Maintenance ......................................................................4
4.1 Air Filter .......................................................................4
4.2 Storage and Freeze Protection .................................4
5. Service ................................................................................4
5.1 Technical Description ................................................5
5.2 Troubleshooting ..........................................................5
5.3 Air Mover .....................................................................6
5.4 Thermistor ...................................................................6
5.5 Condensate Pump .....................................................6
5.6 Float Safety Switch ....................................................6
6. Options & Accessories .....................................................7
7. Wiring Diagram .................................................................7
8. Service Parts ......................................................................8
9. Warranty .............................................................................9
1 Safety Certifications
The Phoenix R250 conforms to unified standard UL 60335-
2-40.
2 Specifications
Part No. 4034460 (Red)
Power 8.3 amps, 120 VAC, Grounded
Water 135 pints/day @ AHAM (80°F, 60%)
Removal
Blower 310 CFM without external ducting
Cord Length 25ft
Refrigerant 2 lb, 0 oz. R-410A
Charge
Operating 33°F to 110°F
Range
Filters: 12” x 12” x 1” Pleated Media MERV-11
Duct Inlet – 12” Flex-Duct
Options Outlet – 10” Lay-Flat
Warranty Five years;
1st year 100% of Parts and Labor
2nd-5th year 100% of sealed refrigeration
system parts.
Dimensions
Unit Shipping
Width 20” 21”
Height 33.5” 35.25”
Depth 20” 21”
Weight 109 lbs 125 lbs
Patent - 7,246,503
D570,988
8,069,681
3 Operation
Place dehumidifier inside structure,
place condensate hose into a drain, or
a large water tight container, and turn
on. To decrease drying times, make sure
all windows and doors are closed to the
outside and seal off the affected wet areas
from unaffected areas.
Optimum performance will be observed
between the temperatures of 70°F and
95°F.
3.1 Transporting
The Phoenix R250 must always be upright when transported
by vehicle. It may be tipped on to its handle and back for
loading and moving by hand.
If the unit is transported on its side, let it sit upright at least
30 minutes before use.
Read the operation and maintenance instructions
carefully before using this unit. Proper adherence to these
instructions is essential to obtain maximum benefit from
your Phoenix R250 dehumidifier.
• It is designed to be used INDOORS ONLY.
• If used in a wet area, plug it into a GROUND FAULT
INTERRUPTER.
• DO NOT use the Phoenix R250 as a bench or table.
• It must always be used in the upright position.
Figure 1: Stacked
Phoenix R250
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3.2 Location
Note the following precautions when locating the Phoenix
R250:
• It is designed to be used INDOORS ONLY.
• If used in a wet area, plug it into a GROUND FAULT
INTERRUPTER.
• DO NOT use the Phoenix R250 as a bench or table.
• It must always be used in the upright position.
3.3 Electrical Requirements
The Phoenix R250 plugs into a common grounded outlet
on a 15 amp circuit. It draws 8.3 amps at 80°F, 60% RH.
If used in a wet area, a ground fault interrupter (GFI) is
required. If an extension cord is required, it must have a
minimum of 14 gauge conductors if 25 feet long or less and
12 gauge conductors if greater than 25 feet long.
3.4 Condensate Removal
The Phoenix R250 is equipped with an internal condensate
pump to remove the water that is condensed during
dehumidification. This pump allows the condensate to be
pumped 20 feet above the unit with the attached hose. If
the condensate must be pumped more than 20 feet above
the unit, a relay pump must be added. The condensate
pump automatically purges for 20 seconds every eight
minutes. Use the PURGE button to empty reservoir. If the
condensate level rises in the reservoir to a critical level a
back-up float switch will activate the pump-out for up to 1
minute. If the water in the reservoir fails to be evacuated,
the safety switch will turn off the compressor.
3.5 Ducting
A wire duct collar is supplied to allow 10” lay-flat duct to be
attached to the Phoenix R250 outlet. Lay-flat plastic ducting
is available (see accessories in section 6). Attach ducting to
the wire duct collar by inserting the plastic duct end through
the collar center and rolling the duct end outward to overlap
the outside of the collar. The duct and collar may then be
quickly attached to the Phoenix R250 by snapping the collar
over the four plastic exhaust tabs.
If the R250 is located in the unaffected area, the intake can
be ducted with 12” flex duct (see accessories in section 6).
Attach the flex duct to the top cover by hooking the spiral
wire under the four tabs. Tape the duct to the top cover for a
complete seal.
3.6 Defrost Cycle
If the low side refrigerant temperature drops below the
defrost set point, due to excessive frost formation on
the evaporator coil, the thermistor activates the solid-
state control and the defrost light. The control cycles the
compressor “off” and “on” by the thermistor temperature
measurement. The air mover will continue to run, causing
air to flow through the evaporator coil and melt the ice when
the compressor is off. When the air temperature and/or
humidity increases, the evaporator temperature will rise and
the thermistor will end the defrost cycle at the defrost set
point.
3.7 POWER Button
Press the POWER button to turn the dehumidifier “on” or
“off”. When starting the dehumidifier the display will show
the accumulated hours. Press the POWER button again to
turn the dehumidifier off. The display will also power off.
3.8 PURGE Button
During normal operation the pump automatically cycles
every eight minutes. Press the PURGE button to remove
condensate manually from the reservoir. There are three
ways to manually remove water from the reservoir:
1. Press the PURGE button once and the pump will run for
20 seconds
2. Press and hold the PURGE button and the pump will run
for up to 30 seconds
3. Press the PURGE button while the dehumidifier is
plugged in but powered off and the pump will run for 30
seconds.
Always manually purge the water reservoir before transport
or storage. Turn off the power and allow the plugged in
dehumidifier to rest 15 minutes before the final purge.
3.9 Hour Meter
The digital hour meter displays the amount of time the
dehumidifier has been turned on to the tenth of an hour.
The hour meter continuously cycles between total machine
hours and job hours every 3 seconds. Hours are stored in
memory even when the unit is unplugged. The previous
totals will be displayed next time the unit is powered on.
3.10 HOURS Button
Pressing the HOURS button displays the hour meter when
the unit is turned off but plugged into power. To reset job
hours, press and hold the HOURS button for 5 seconds when
the unit is operating.
Figure 3: Phoenix R250 control board.
Figure 2: Phoenix R250 with lay-flat duct.
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3.11 Defrost Light
The DEFROST light turns on when the unit is in defrost cycle
and indicates when the compressor is off.
3.12 Bypass Control
Below 90°F - When the Phoenix R250 is used in normal
dehumidifier operating
temperatures (below
90°F), the bypass
cover must close the
bypass openings,
figure 4. This maximizes
performance by
increasing the
amount of air that is
dehumidified across
the evaporator. This
temperature range is
often found during the
first 24 hours of a drying
job.
Above 90°F - When the
Phoenix R250 is used
in high temperature
conditions above
90°F, reposition
the bypass cover
to open the bypass
holes, figure 5. This
improves dehumidifier
efficiency by increasing
the amount of airflow
over the condenser
and lowering the
refrigerant pressure.
Simultaneously, this
slows the airflow across
the evaporator allowing
the air temperature to
be lowered to the dew
point and increases dehumidifier capacity. These higher
temperatures are often found after the first 24 hours.
4 Maintenance
4.1 Air Filter
The Phoenix R250 is equipped with a pleated media air
filter that must be checked regularly. The standard filter
is a MERV-11 high efficiency filter. Operating the unit with
a dirty filter will reduce the dehumidifier’s capacity and
efficiency and may force the unit into defrost causing the
compressor to cycle “off” and “on” unnecessarily. The filter
can generally be vacuumed clean several times before
needing replacement. Replacement filters can be ordered
from the manufacturer or purchased locally if available.
IMPORTANT: DO NOT operate the unit without the filter
or with a less effective filter as the heat exchanger and
coils inside the unit could become clogged and require
disassembly to clean.
4.2 Storage and Freeze Protection
There are two issues to consider when the Phoenix R250
is stored between uses and both pertain to water trapped
in the unit. The first is biological growth and the second is
damage caused by freezing. The effects of the trapped water
can be greatly reduced if precautions are taken to remove
as much as possible before storage.
1. Use the pump PURGE button to reduce the water level in
the reservoir.
2. Stretch the hose flat to drain it completely. Raise one
end above your head and spool hose while draining
water out the other end.
3. To reduce biological growth flush the unit with a
bio-fungicide that is approved for use with copper,
aluminum and polyethylene. To flush:
a. Run the hose to a drain.
b. Plug in the unit but do not turn it on.
c. Remove the air filter. Slowly pour a quart of the
antimicrobial through the heat exchanger.
d. Hold in the pump purge switch to reduce the water
level in the reservoir.
e. Flush with water.
4. If the unit will be exposed to freezing temperatures,
after purging, pull back the filter and pour 1 cup (8oz)
of a propylene glycol based anti-freeze through the heat
exchanger. It will flow down into the pump reservoir. Do
NOT purge the solution out of the unit.
5. Dirty filters should be changed prior to long term
storage to prevent biological growth on the filter.
5 Service
WARNING: Servicing the Phoenix R250 with its high
pressure refrigerant system and high voltage circuitry
presents a health hazard which could result in death, serious
bodily injury, and/or property damage. Only qualified service
people should service this unit.
CAUTION: Do not operate unit without the front housing in
place.
Figure 5: At or above 90°
Figure 6: Remove filter, snap grain
control cover into position shown, and
replace filter.
Bypass Cover
Bypass Openings
Bypass openings
located under filter
Figure 4: Below 90° (Normal)
Bypass Cover
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5.1 Technical Description
The Phoenix R250 uses a refrigeration system similar to
an air conditioner’s to remove heat and moisture from
incoming air and to add heat to the air that is discharged.
Hot, high pressure refrigerant gas is routed from the
compressor to the condenser coil. The refrigerant is cooled
and condensed by giving up its heat to the air that is about
to be discharged from the unit. The refrigerant liquid then
passes through a filter/drier and capillary tubing which
cause the refrigerant pressure and temperature to drop. It
next enters the evaporator coil where it absorbs heat from
the incoming air and evaporates.
The evaporator operates in a flooded condition, which
means that all the evaporator tubes contain liquid
refrigerant during normal operation. A flooded evaporator
should maintain constant pressure and temperature across
the entire coil, from inlet to outlet.
The mixture of gas and liquid refrigerant enter the
accumulator after leaving the evaporator coil. The
accumulator prevents any liquid refrigerant from reaching
the compressor. The compressor evacuates the cool
refrigerant gas from the accumulator and compresses it to a
high pressure and temperature to repeat the process.
5.2 Troubleshooting
No dehumidification, neither hour meter display nor
compressor run and POWER button does not turn ON.
1. Unit unplugged or no power to outlet
2. Defective control board
3. Loose connection in internal wiring
No dehumidification, neither hour meter display nor
compressor run with POWER button ON.
1. Defective control board
2. Loose connection in internal wiring
Some dehumidification, air mover runs continuously but
compressor only runs sporadically.
1. Unit is in defrost cycle, DEFROST light on
2. Defrost thermistor defective or loose
3. Loose connection in compressor circuit
4. Defective compressor overload
5. Defective compressor
6. Defective relay
7. Upper housing is not sealed to lower housing
No dehumidification, air mover runs but compressor does
not.
1. Bad connection in compressor circuit
2. Safety float switch closed, check pump reservoir
3. Defective compressor capacitor
4. Defective compressor overload
5. Defective compressor
6. Defective control board
Air mover does not run. Compressor runs briefly but cycles
on and off.
1. Loose connection in blower circuit
2. Obstruction prevents impeller rotation
3. Defective air mover
Unit removes some water but not as much as expected.
1. Air temperature and/or humidity have dropped
2. Humidity meter and/or thermometer used are out of
calibration
3. Unit has entered defrost cycle
4. Air filter dirty
5. Defective defrost thermistor
6. Low refrigerant charge
7. Air leak such as loose cover
8. Defective compressor
9. Restrictive exhaust or inlet ducting
Unit runs but does not pump water.
1. Hose kinked or plugged
2. Pump motor defective
3. Pump check valve plugged
4. Bad connection in pump circuit
5. Hose disconnected internally
6. Defective control board (pump phase)
Figure 7: Refrigeration system
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Unit pumps water automatically but not when PURGE button
is pushed.
1. Bad connection in PURGE button circuit
2. Defective control board
Evaporator coil frosted continuously, low dehumidifying
capacity.
1. Defrost thermistor loose or defective
2. Low refrigerant charge
3. Dirty air filter or restricted air flow
4. Upper housing is not sealed to lower housing
Compressor runs with POWER button OFF.
1. Defective relay
2. Defective control board
3. Upper housing not sealed to tower
5.3 Air Mover
The motorized impeller has a PSC motor and internal
thermal overload protection. If defective, the complete
assembly must be replaced.
1. Unplug power cord
2. Remove the four screws attaching the bottom plate to
the lower housing
3. Disconnect the impeller leads
4. Remove the four screws holding the impeller to the
bottom plate
5. Reassemble the new impeller using the above
procedure in reverse
5.4 Thermistor
The defrost thermistor is attached to the refrigerant suction
line between the accumulator and the evaporator.
To replace thermistor:
1. Unplug the
dehumidifier
2. Remove the front
housing
3. Cut cable ties and
remove insulation
and aluminum tape
4. Remove control
panel
5. Unthread thermistor
from control housing
grommet
6. Detach thermistor from control board jumper
7. Reassemble thermistor and dehumidifier using the
above procedure in reverse
Figure 10: Picture of
the float safety switch.
5.5 Condensate Pump
The internal condensate pump removes water that collects
in the reservoir.
To replace the condensate pump:
1. Unplug the unit
2. Remove the front housing
3. Unplug the pump wires from the wire harness
4. Remove the condensate hose and the one screw
attaching the pump bracket to the compressor support
5. Replace the pump, hose, wiring, bolts, and housing in
the reverse order
5.6 Float Safety Switch
The float safety switch activates when the water rises too
high in the condensate reservoir. The float safety switch
turns off the compressor until the water level lowers and
disengages the switch.
To replace the float safety switch
1. Unplug the dehumidifier
2. Remove the front housing
3. Unplug the float safety switch
wires from the wire harness
4. Remove the one screw
attaching the pump and
float switch bracket to the
compressor support
5. Remove the pump from the
reservoir and slide out the float
switch from under the compressor
support
6. Replace the float, pump, wiring, bolts and housing in the
reverse order
Figure 9: Picture of pump and float switch brackets screw.
Figure 8: Thermistor attached to the
refrigerant line.
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BLU-14
RED-13
COMPRESSOR
BLOWER MOTOR
LEVEL
SWITCH
CONTROL
BOARD
THERMISTOR
CONDENSATE PUMP
WHT-10
GRN
BLK
WHT-2
YEL-9
YEL-8
RUN
CAPACITOR
RUN
CAPACITOR
BLK-3
YEL-7
E1
E3
E2
E5
E4
BLK-5
BRN-6
BLK-12
BLU-18
BLK-4
WHT
S
R
C
4026354 C
Figure 11: Wiring diagram
6 Options & Accessories
4025568 Air Filter, Pleated 12” x 12” x 1” MERV-11
4026315 Air Filter, Pleated 12” x 12” x 1” MERV-8
4024750 Inlet Flex Duct 12” x 25”
Metallize Polyester
4024935 Lay-Flat Duct 10” Round x 250’ Roll
4026309-01 10” Duct Ring
To order, contact Therma-Stor LLC at 1-800-533-7533.
7 Wiring Diagram
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2
5
4
7, 8
9, 10, 11,
12, 13
14, 15, 16, 17
1, 3
Item Description Qty Part No.
1 Top Cover 1 4026977
2 Top Cover Catch 1 4026979
3 Top Cover Hinge 2 4026978
4 Hex Bolts, 1/4”–20 x 4” 4 1 1154019
5 Hex Bolts, 1/4”–20 x 1.75” 2 1154014
6 Handle Weldment 1 4026344
7 Wheel, 12” 2 4026851
8 Cotter Pin 2 1284404
9 Filter, 12” x 12” x 1” 1 4025568
10 Hose (1/4” ID x 33’ long) 1 4024916
Item Description Qty Part No.
11 Coupling Body, 1/4” Tube 1 4026306
12 Coupling Insert, 1/4” Tube 1 4026986
13 Cord 1 4032315
14 Control Board 1 4026763
15 Capacitor, Compressor, 50 μF 1 4033032-06
16 Capacitor, Impeller, 15 μF 1 4033031-07
17 Thermistor 1 4031279
18 Handle lever 1 4026350
Description Qty Part No.
Compressor 1 4035407
Evaporator Coil 1 4033995-02
Condenser Coil 1 4033996
Condensate Pump 1 4034582-01
Float Safety Switch 1 4034374
Description Qty Part No.
Impeller, Air Mover 1 4026657
Exhaust Grill 1 4026308
Wire Duct Collar 1 4026309
Impeller Plate Bolt 4 1154006
8 Service Parts
Items listed are not shown
18
Figure 12: Service parts identification
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Warrantor:
Therma-Stor LLC
4201 Lien Rd.
Madison, WI 53704
Telephone: 1-800-533-7533
Who Is Covered: This warranty extends only to the original end-user of the Phoenix R250
dehumidifier and may not be assigned or transferred.
Year One: Therma-Stor LLC warrants that, for one (1) year the Phoenix R250 dehumidifier will
operate free from any defects in materials and workmanship, or Therma-Stor LLC will, at its option,
repair or replace the defective part(s), free of any charge.
Year(s) Two Through Five: Therma-Stor LLC further warrants that for a period of five (5) years, the
condenser, evaporator, and compressor of the Phoenix R250 dehumidifier will operate free of any
defects in material or workmanship, or Therma-Stor LLC, at its option, will repair or replace the
defective part(s), provided that all labor and transportation charges for the part(s) shall be borne by
the end-user.
Year(s) One Through Seven: Materials and workmanship of the housing are covered.
End-User Responsibilities: Warranty service must be performed by a Servicer authorized by
Therma-Stor LLC. If the end-user is unable to locate or obtain warranty service from an authorized
Servicer, he should call Therma-Stor LLC at the above number and ask for the Therma-Stor
Service Department, which will then arrange for covered warranty service. Warranty service will be
performed during normal working hours.
The end-user must present proof of purchase (lease) upon request, by use of the warranty card or
other reasonable and reliable means. The end-user is responsible for normal care. This warranty
does not cover any defect, malfunction, etc. resulting from misuse, abuse, lack of normal care,
corrosion, freezing, tampering, modification, unauthorized or improper repair or installation,
accident, acts of nature or any other cause beyond Therma-Stor LLC’s reasonable control.
Limitation and Exclusions: If any Phoenix R250 Dehumidifier part is repaired or replaced, the new
part shall be warranted for only the remainder of the original warranty period applicable thereto
(but all warranty periods will be extended by the period of time, if any, that the Phoenix R250
Dehumidifier is out of service while awaiting covered warranty service).
UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE PHOENIX R250
DEHUMIDIFIER OR ANY PART THEREOF, ALL OTHER WARRANTIES IMPLIED BY LAW, INCLUDING
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL ALSO EXPIRE. ALL
WARRANTIES MADE BY THERMA-STOR LLC ARE SET FORTH HEREIN, AND NO CLAIM MAY BE MADE
AGAINST THERMA-STOR LLC BASED ON ANY ORAL WARRANTY. IN NO EVENT SHALL THERMA-
STOR LLC, IN CONNECTION WITH THE SALE, INSTALLATION, USE, REPAIR OR REPLACEMENT OF
ANY PHOENIX R250 DEHUMIDIFIER OR PART THEREOF BE LIABLE UNDER ANY LEGAL THEORY FOR
ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES INCLUDING WITHOUT LIMITATION WATER
DAMAGE (THE END-USER SHOULD TAKE PRECAUTIONS AGAINST SAME), LOST PROFITS, DELAY, OR
LOSS OF USE OR DAMAGE TO ANY REAL OR PERSONAL PROPERTY.
Some states do not allow limitations on how long an implied warranty lasts, and some do not
allow the exclusion or limitation of incidental or consequential damages, so one or both of these
limitations may not apply to you.
Legal Rights: This warranty gives you specific legal rights, and you may also have other rights which
vary from state to state.
LIMITED WARRANTY
R250 | LGR DEHUMIDIFIER
4201 LIEN RD. • MADISON, WI 53704
