thermastor Phoenix R125 User manual

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The Phoenix R125 is the first 65 pint LGR Dehumidifier. The
R125 offers high quality restoration drying performance in
the WTRDHM category at entry-level pricing. The Phoenix
R125 utilizes new patented LGR technology that produces
maximum grain depression and removes water long after
conventional dehumidifiers stop. As a result, structures,
contents and materials dry quicker, allowing you to get to
your next job faster. At only 79 lbs. and with a compact 20”W
x 17”D footprint, the R125 fits virtually anywhere you need to
dry.
The Phoenix R125 combines Phoenix innovation, technical
expertise, and proven durability into a small, portable, and
durable roto-mold housing. In addition to the R125’s compact
size and superior performance, the unit features high energy
efficiency, front cord and hose storage, a ductable outlet, a
pleated media filter, and a rotating handle for easy transport
and storage.
The Phoenix R125 LGR Dehumidifier
LGR Performance in a 79 lb, 20” x 17” footprint
Removes 65 pints at AHAM drawing only 5.0 amps
Focused Airflow Outlet directs air downward across the
wet surface
Accommodates 10” layflat ducting
Rugged Roto-mold Plastic Housing resists dents and
scratches
Solid State Control Panel
Protected Recessed Condensate Hose that cannot catch
or be damaged on obstructions
Heavy-duty rotating handle for ease of transport and
storage
Recessed 12” Wheels
Pleated Media MERV-8 Filter; Optional MERV-11
Convenient Front Pocket for cord and hose storage
Phoenix R125
Part No. 4032350
Patents: 7,246,503
8,938,981
TS-716
08/18 Rev. G
Installation, Operation & Service Instructions
– READ AND SAVE THESE INSTRUCTIONS –
Specifications subject to change without notice.
4201 LIEN RD. • MADISON, WI 53704
Phoenix R125 - LGR Dehumidifier
OWNER’S MANUAL
WISCONSIN

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Table of Contents
Introduction ...............................................................................1
1. Safety ..................................................................................2
2. Specifications ....................................................................2
3. Operation ............................................................................2
3.1 Transporting ................................................................3
3.2 Electrical Requirements ............................................3
3.3 Condensate Removal ................................................3
3.4 Ducting .........................................................................3
3.5 Defrost Cycle ...............................................................3
3.6 Power Button ..............................................................3
3.7 Purge Button ...............................................................3
3.8 Hour Meter ..................................................................3
3.9 Hours Button ...............................................................3
3.10 Defrost Light .............................................................3
4. Maintenance ......................................................................4
4.1 Air Filter .......................................................................4
4.2 Storage and Freeze Protection .................................4
5. Service ................................................................................4
5.1 Technical Description ................................................4
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 .....................................................6
7. Wiring Diagram .................................................................7
8. Service Parts ......................................................................8
Warranty .............................................................................9
1 Safety
The R125 conforms to unified standard UL 60335-2-40
• Never operate a unit with a damaged power cord. If
the power cord is damaged it must be replaced by the
manufacturer, its service agent, or similarly qualified person
in order to avoid a hazard.
• The unit shall be installed in accordance with national
wiring regulations.
• Do not obstruct the air intake and exhaust. Maintain a .3
m (1 ft) clearance around the air intake and exhaust.
• 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.
2 Specifications
Part No. 4032350
Power 5.0 amps, 110-120 VAC, Grounded
Water 65 pints/day @ AHAM (80°F, 60%)
Removal 16 gal/day maximum @ saturation
Process Air 170 CFM without external ducting
Refrigerant 1 lb, 2 oz. R410a
Charge
Operating 33°F to 100°F
Range
Filter 12” x 12” x 1” Pleated
Media MERV-8
Duct
Options Exhaust – 10” Lay-Flat
Warranty Five years;
1st year 100% of Parts
and Labor
2nd-5th year 100% of
Parts of sealed
refrigeration system.
Size 30” high x 20” wide x 17” deep
Weight 79 lbs
Patents 7,246,503
8,938,981
3 Operation
Place dehumidifier inside structure, place condensate
hose into a drain, or a very large container, and turn on. To
decrease drying times, make sure all windows and doors
are closed to the outside and seal off the wet area from any
unaffected areas.
Stacked Phoenix R125
Read the operation and maintenance instructions
carefully before using this unit. Proper adherence to these
instructions is essential to obtain maximum benefit from
your R125 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 R125 as a bench or table.
• It must always be used in the upright position.

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3.1 Transporting
The Phoenix R125 features a high-impact roto-molded hous-
ing which protects the unit while loading into vehicles. The
unit was designed to stack 2 units high. For sturdy stack-
ing, keep the rotating handle in the upright position on the
bottom unit, place rotating handle in the down position and
“nest” the wheels of the top unit in the indentions of the bot-
tom unit to provide stability. This is recommended for stor-
age only. The units should be properly secured for transport.
The Phoenix R125 must always be upright when transported
by vehicle. It may be tipped onto its handle and back for
loading and moving by hand.
3.2 Electrical Requirements
The Phoenix R125 plugs into a common grounded outlet
on a 15 amp circuit. It draws 5.0 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.
3.3 Condensate Removal
The Phoenix R125 is equipped with an internal condensate
pump to remove the water that is condensed during
dehumidification. This allows the condensate to be pumped
up to 20 feet with the attached hose. If the condensate
must be pumped more than 20 feet above the unit, a
second pump must be added to relay the condensate.
The condensate pump automatically purges when the
reservoir is full. Use the PURGE button to manually remove
condensation.
3.4 Ducting
A wire duct collar is supplied to allow 10” lay-flat duct to be
attached to the Phoenix R125 outlet. Lay-flat plastic ducting
is available; see accessories table page 6. To attach ducting
to the wire duct collar, put the plastic duct end through
the collar center and roll the duct end outward so that it
overlaps the outside of the collar. The duct and collar may
then be quickly attached to the Phoenix R125 by snapping
the collar over the four exhaust tabs.
3.5 Defrost Cycle
If the low side refrigerant temperature drops due to exces-
sive frost formation on the evaporator coil and below the
temperature set point, the thermistor activates the solid-
state control and defrost light. The compressor is cycled 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 temperature set point.
3.6 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.
3.7 PURGE Button
During normal operation the pump automatically cycles
when the reservoir is full. Press the PURGE button to remove
condensate manually from the reservoir. There are several
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
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.
3.8 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.
3.9 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.
3.10 DEFROST Light
The DEFROST light turns on when the unit is in defrost cycle
and indicates when the compressor is off.
Phoenix R125 control board.

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4 Maintenance
4.1 Air Filter
The Phoenix R125 is equipped with a pleated media air
filter that must be checked regularly. The standard filter
is a MERV-8 high efficiency filter. Operating the unit with
a dirty filter will reduce the dehumidifier’s capacity and
efficiency and may cause 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 the 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 R125
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.
Dirty filters should be changed prior to long term storage
to prevent biological growth on the filter.
5 Service
WARNING: Servicing the Phoenix R125 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.
5.1 Technical Description
The Phoenix R125 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
compressor after leaving the evaporator coil. The
compressor evacuates the cool refrigerant gas from the
accumulator and compresses it to a high pressure and
temperature to repeat the process.
Refrigeration system

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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. Defective compressor
8. Restrictive exhaust 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
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. Front housing is not sealed to rear housing
Compressor runs with POWER button OFF.
1. Defective relay
2. Defective control board

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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 rear housing
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.
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 rear housing
5. Replace the pump, hose, wiring, bolts, and housing in
the reverse order
6 Options & Accessories
4026315 Air Filter, Pleated 12” x 12” x 1” MERV-8
4025568 Air Filter, Pleated 12” x 12” x 1” MERV-11
4024935 Lay-Flat Duct 10” Round x 250’ Roll
To order, contact Therma-Stor LLC at 1-800-533-7533.
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 front housing
3. Disconnect the impeller leads
4. Remove the four screws holding the impeller to the
mounting 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
Thermistor attached to
the refrigerant line.
Picture of pump and reservoir.

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WHT
BLK-5
GRN GRN-14
BLK-5
GRN-13
BRN-12
BLK-16
WHT-2
WHT-7
BLK-3
GRN
BLU-8
BLK-4
BLK-11
YEL
YEL
BLU
YEL
YEL-10
RED-9
WHT-7 BLK
GRY
WHT-6
CONTROL
BOARD
RUN
CAP
FAN
MOTOR
PUMP
SAFETY
NO
NC
FLOAT
WHT
PUMP FAN
LEVEL
SWITCH
THERMISTOR
1 - LINE
2 - NEUT
3 - COMP
RUN
CAP
PLUG
5 4
C
RS
COMPRESSOR
BLK-15
BLK
P/N 4031273 REV C
Wiring diagram
7 Wiring Diagram

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Specifications subject to change without notice.
8 Service Parts
Item Description Qty Part No.
1 Top Cover 1 4031258
2 Filter, 12” x 12” x 1” 1 4026315
3 Impeller, Air Mover 1 4034477
4 Evaporator Coil 1 4031253
5 Condenser Coil 1 4031254
6 Condensate Pump 1 4034496
7 Capacitor, Compressor, 35 μF 1 4033032-03
8 Compressor 1 4029567
9 Thermistor Probe 1 4034716-02
10 Capacitor, Impeller, 6.0 μF 1 4033031-03
11 Hex Bolts, 1/4”–20 x 1.50” 6 1154013
12 Handle Bar 1 4031267
13 Handle Grip 1 4031268
14 Wheel, 12”, Gray 2 4026304
15 Cotter Pin 2 1284404
16 Hub Cap, Wheel, Gray 2 4027137
17 Handle Knob 2 4032327
18 Control Board 1 4034457
19 Power Cord 1 4032297
Items listed are not shown
Description Qty Part No.
Hose (1/4” ID x 33’ long) 1 4024916
Coupling Body, 1/4” Tube 1 4024910
Coupling Insert, 1/4” Tube 1 4027277
Exhaust Grill 1 4026308
Wire Duct Collar 1 4026309
Handle Grip Screws 2 4032414
Handle Attachment Bolt 2 1154006
To Add Lanyard (not originally included with the unit)
Handle Knob, Lanyard 2 4033372
Handle to Base Screws 2 4033371
1
2
3
45
6
7
8
9
10
11
12
13
14 15
16
17
18
19

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Warrantor:
Therma-Stor LLC
4201 Lien Rd.
Madison, WI 53704
Telephone: [phone]
Who Is Covered: This warranty extends only to the original end-user of the Phoenix R125
dehumidifier and may not be assigned or transferred.
Year One: Therma-Stor LLC warrants that, for one (1) year the Phoenix R125 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 R125 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 R125 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 R125
Dehumidifier is out of service while awaiting covered warranty service).
UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE PHOENIX R125
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 R125 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.
4201 LIEN RD. • MADISON, WI 53704
Phoenix R125 - LGR Dehumidifier
LIMITED WARRANTY