R175 Phoenix Manual
User Manual: R175
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Owner’s Manual — Phoenix R175 LGR Dehumidifier
Installation, Operation & Service Instructions
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Read and Save These Instructions
The Phoenix R175 is the rst roto-mold LGR (low grain
refrigerant) dehumidier manufactured by Therma-Stor,
LLC. The R175 combines Phoenix innovation, technical
expertise and proven durability. This unit will remove more
water, produce more grain depression and dry structures and
contents faster than standard refrigerant dehumidiers.
In addition to the performance benets, patented bypass
technology and tough compact size, are the multiple ducting
options, pleated media lter and energy efcient operation.
The R175 is the latest member of the Phoenix line of LGR
dehumidiers; the most effective and versatile drying devices
made.
The Phoenix R175 LGR Dehumidifier
Increased Capacity - The Phoenix R175 removes over
30% more water than other dehumidiers of equal size.
Energy Efciency - Removes 92 pints at AHAM while
drawing only 6.3 amps.
Patented Bypass Technology
230 CFM - More processed air speeds drying and
provides superior static pressure for ducting.
More Grain Depression - Drier from an LGR gets your
jobs drier quicker.
Focused Airow - Patent focused outlet directs air
downward across the wet surface.
Multiple Ducting Options - 12” intake, 10” exhaust.
Plastic Housing - Rugged roto-molded housing resists
dents and scratches.
Solid State Controls - Easy to read and operate.
Protected Condensate Hose - Located under the lid.
Cannot catch or be damaged on obstructions.
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 efcient storage. Rolls over obstacles
with ease.
Pleated Media Air Filter - A MERV-8 is standard.
Stacking/Nesting - Reduces space for ease of stacking
and storage.
Phoenix R175
Part No. 4029200
Patent 7,246,503
Specifications subject to change without notice.
TS-592
02/17 Rev. A
4201 Lien Rd. • Madison, WI 53704
BYPASS
Patented ™
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Table of Contents
Introduction ............................................................................1
1. Safety ...............................................................................2
2. Specications .................................................................2
3. Operation ........................................................................3
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 ............................................................4
3.10 Defrost Light ........................................................... 4
3.11 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
The Phoenix R175 conforms to unied 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 qualied 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. 4029200
Power 6.3 amps, 110-120 VAC, Grounded
Water 92 pints/day @ AHAM (80°F, 60%)
Removal 21 gal/day maximum @ saturation
Blower 230 CFM without external ducting
210 CFM @ .15 IWG external static
Refrigerant 1 lb, 8 oz. R410a
Charge
Operating 33°F to 110°F
Range
Filter 12” x 12” x 1” Pleated Media MERV-8
Duct Intake – 12” Flex-Duct
Options Supply – 10” Lay-Flat
Warranty Five years;
1st year 100% of Parts and
Labor
2nd-5th year 100% of Parts
of sealed
refrigeration system.
Size 33” high x 20” wide x 20”
deep
Weight 105 lbs
Patent 7,246,503
Read the operation and maintenance instructions
carefully before using this unit. Proper adherence to these
instructions is essential to obtain maximum benet from
your Phoenix R175 dehumidier.
• 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 R175 as a bench or table.
• It must always be used in the upright position.
Figure 1: Stacked
Phoenix R175
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3 Operation
Place dehumidier 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.
3.1 Transporting
The Phoenix R175 features a high-impact roto-molded
housing which protects the unit airways, and while loading
into vehicles. The unit was designed to make it easy to stack
two high. The wheels of the top unit ‘nest’ in the indentations
of the bottom unit to provide stability. It is recommended the
units are properly secured for transport. The Phoenix R175
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 R175 plugs into a common grounded outlet on
a 15 amp circuit. It draws 6.3 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.
3.3 Condensate Removal
The Phoenix R175 is equipped with an internal condensate
pump to remove the water that is condensed during
dehumidication. This allows the condensate to be pumped
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 for 20 seconds every eight
minutes. Use the PURGE button to manually remove
condensation.
3.4 Ducting
A wire duct collar is supplied to allow 10” lay-at duct to be
attached to the Phoenix R175 outlet. Lay-at 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 R175 by snapping the collar
over the four exhaust tabs.
3.5 Defrost Cycle
If the low side refrigerant temperature drops due to excessive
frost formation on the evaporator coil and below the tempera-
ture 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 ow 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 dehumidier on or off.
When starting the dehumidier the display will show the
accumulated hours. Press the POWER button again to turn
the dehumidier off. The display will also power off.
3.7 PURGE Button
During normal operation the pump automatically cycles every
four minutes. 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 dehumidier 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
dehumidier to rest 15 minutes before the nal purge.
3.8 Hour Meter
The digital hour meter displays the amount of time the
dehumidier 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.
Figure 2: Phoenix R175 control board.
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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.
3.11
Bypass Control
Below 90°F - When
operating the Phoenix
R175 below 90°F, the
bypass cover must
close the bypass holes,
gure 3. This maximizes
the amount of air that
is dehumidied across the
evaporator. These cooler
temperatures are often found during the rst 24 hours of a
drying job.
Above 90°F - When
operating the Phoenix
R175 above 90°F,
reposition the bypass
cover to open the bypass
holes, gure 4. This
improves dehumidier
efciency by increasing
the amount of airow
across the condenser.
This also slows airow
across the evaporator
giving the hotter air
more time to reach
dew point, thereby
increasing dehumidier
capacity. These higher
temperatures are often
found after the rst 24
hours of a drying job.
4 Maintenance
4.1 Air Filter
The Phoenix R175 is equipped with a pleated media air lter
that must be checked regularly. The standard lter is a MERV-
8 high efciency lter. Operating the unit with a dirty lter will
reduce the dehumidier’s capacity and efciency and may
cause the compressor to cycle off and on unnecessarily. The
lter can generally be vacuumed clean several times before
needing replacement. Replacement lters 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 R175 is
stored between uses and both pertain to water trapped in the
unit. The rst 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 at 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 ush the unit with a bio-
fungicide that is approved for use with copper, aluminum
and polyethylene. To ush:
a. Run the hose to a drain.
b. Plug in the unit but do not turn it on.
c. Remove the air lter. 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 lter and pour 1 cup (8oz)
of a propylene glycol based anti-freeze through the heat
exchanger. It will ow down into the pump reservoir. Do
NOT purge the solution out of the unit.
5. Dirty lters should be changed prior to long term storage
to prevent biological growth on the lter.
5 Service
WARNING: Servicing the Phoenix R175 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 4
Remove lter, snap bypass cover into
position shown, and replace lter.
Bypass Cover
Bypass Openings
Bypass openings
located under filter
Figure 3
Bypass Cover
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5.1 Technical Description
The Phoenix R175 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 lter/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 ooded condition, which means
that all the evaporator tubes contain liquid refrigerant during
normal operation. A ooded 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 dehumidication, 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 dehumidication, neither hour meter display nor
compressor run with POWER button ON.
1. Defective control board
2. Loose connection in internal wiring
Figure 5: Refrigeration system
Some dehumidication, 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 dehumidication, air mover runs but compressor does
not.
1. Bad connection in compressor circuit
2. Safety oat 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 briey 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 lter 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)
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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 compressor support
5. Replace the pump, hose, wiring, bolts, and housing in
the reverse order
5.6 Float Safety Switch
The oat safety switch activates when the water rises too
high in the condensate reservoir. The oat safety switch
turns off the compressor until the water level lowers and
disengages the switch.
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 lter or restricted air ow
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 dehumidier
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 dehumidier using the above
procedure in reverse
Figure 8: Picture of the oat safety switch.
Figure 6: Thermistor attached
to the refrigerant line.
Figure 7: Picture of pump and oat switch brackets screw.
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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 9: Wiring diagram
To replace the oat safety switch
1. Unplug the dehumidier
2. Remove the front housing
3. Unplug the oat safety switch wires from the wire
harness
4. Remove the one screw attaching the pump and oat
switch bracket to the compressor support
5. Remove the pump from the reservoir and slide out the
oat switch from under the compressor support
6. Replace the oat, pump, wiring, bolts and housing in the
reverse order
6 Options & Accessories
4025568 Air Filter, Pleated 12” x 12” x 1” MERV-11
4024750 Intake Flex Duct 12” x 25”
Metallize Polyester
4024935 Lay-Flat Duct 10” Round x 250’ Roll
To order, contact Therma-Stor LLC at 1-800-533-7533.
7 Wiring Diagram
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8 Service Parts
Item Description Qty Part No.
1 Top Cover 1 4026977
2 Top Cover Hinge 2 4026978
3 Top Cover Catch 1 4026979
4 Hex Bolts, 1/4”–20 x 4” 4 1154019
5 Hex Bolts, 1/4”–20 x 1.75” 2 1154014
6 Handle Assembly 1 4027381
7 Wheel, 12” 2 4026304
8 Cotter Pin 2 1284404
9 Hub Cap, Wheel 1 4027137
10 Filter, 12” x 12” x 1” 1 4026315
11 Hose (1/4” ID x 33’ long) 1 4024916
12 Coupling Body, 1/4” Tube 1 4026306
13 Coupling Insert, 1/4” Tube 1 4026986
14 Cord 1 4032297
15 Control Board 1 4026763
16 Capacitor, Compressor, 45 μF 1 4033032-05
17 Capacitor, Impeller, 7.5 μF 1 4033031-04
18 Thermistor 1 4031279
Items listed are not shown
Description Qty Part No.
Compressor 1 4029168
Evaporator Coil 1 4028234
Condenser Coil 1 4028235
Accumulator 1 4028297
Condensate Pump 1 4034832
Float Safety Switch 1 4034374
Impeller, Air Mover 1 4026360
Exhaust Grill 1 4026308
Wire Duct Collar 1 4026309
Impeller Plate Bolt 4 1154006
Specifications subject to change without notice.
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Phoenix R175 Dehumidifier Limited Warranty
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 R175
dehumidier and may not be assigned or transferred.
Year One: Therma-Stor LLC warrants that, for one (1) year the Phoenix R175 dehumidier 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 ve (5) years, the
condenser, evaporator, and compressor of the Phoenix R175 dehumidier 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, modication, 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 R175 Dehumidier 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 R175 Dehumidier
is out of service while awaiting covered warranty service).
UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE PHOENIX R175
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 R175 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 specic legal rights, and you may also have other rights which
vary from state to state.
