Therma Stor Products Group Dehumidifier R175 User Manual

Phoenix R175 LGR Dehumidifier  
TS-348  
PO Box 8680 • Madison, WI 53708  
Owners Manual — Phoenix R175 LGR Dehumidifier  
Installation, Operation & Service Instructions  
Read and Save These Instructions  
The Phoenix Rꢀ75 is the first roto-mold LGR (low grain refrigerant) dehumidifier manufactured  
by Therma-Stor, LLC. The Rꢀ75 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 dehumidifiers.  
In addition to the performance benefits are the multiple ducting options, pleated media filter  
and energy efficient operation. The Rꢀ75 is the latest member of the Phoenix line of LGR  
dehumidifiers; the most effective and versatile drying devices made.  
The Phoenix R175 LGR Dehumidifier  
Increased Capacity - The Phoenix Rꢀ75 removes over  
30% more water than other dehumidifiers of equal  
size.  
Energy Efficiency - Removes 92 pints at AHAM while  
drawing only 6.ꢀ amps.  
230 CFM - More processed air speeds drying and  
provides superior static pressure for ducting.  
More Grain Depression - The driest air from an LGR  
gets your jobs drier quicker.  
Focused Airflow - Patent pending focused outlet directs  
air downward towards the wettest surface.  
Multiple Ducting Options - ꢀ2” intake, ꢀ0” 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 - For greater maneuverability on  
the job site and efficient storage. Rolls over obstacles  
with ease.  
Pleated Media Air Filter - A MERV-7 is standard.  
Phoenix R175  
Stacking/Nesting - Reduces space for ease of stacking  
and storage.  
Part No. 4026300  
Specifications subject to change without notice.  
Revised 1/07  
Toll-Free 1-800-533-7533  
 
3.2 Electrical Requirements  
3.6 POWER Button  
The Phoenix Rꢀ75 plugs into a common grounded outlet  
on a ꢀ5 amp circuit. It draws 6.ꢀ 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 ꢀ4 gauge conductors if 25 feet long or less  
and ꢀ2 gauge conductors if greater than 25 feet long.  
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  
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:  
3.3 Condensate Removal  
The Phoenix Rꢀ75 is equipped with an internal condensate  
pump to remove the water that is condensed during  
dehumidification. 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 four minutes. Use the PURGE button to manually  
remove condensation.  
ꢀ. 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 ꢀ5 minutes before the final purge.  
3.4 Ducting  
A wire duct collar is supplied to allow ꢀ0” lay-flat duct to  
be attached to the Phoenix Rꢀ75 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 Rꢀ75  
by snapping the collar over the four exhaust tabs.  
3.8 Hour Meter  
The digital hour meter displays the cumulative time the  
dehumidifier has been turned on to the tenth of an hour.  
The total hours measured is stored when the unit is  
unplugged. The previous total will be displayed the next  
time the unit is turned on.  
3.9 HOURS Button  
3.5 Defrost Cycle  
Press the HOURS button when the dehumidifier cannot  
be plugged in and the hour meter needs to be read. The  
digital hour meter will display the last saved cumulative  
time for ten seconds.  
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 com-  
pressor 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.  
3.10 DEFROST Light  
The DEFROST light turns on when the unit is in defrost  
cycle and indicates when the compressor is off.  
4 Maintenance  
4.1 Air Filter  
The Phoenix Rꢀ75 is equipped with a pleated media air  
filter that must be checked regularly. The standard filter  
is a MERV-7 high efficiency filter. Operating the unit with  
a dirty filter will reduce the dehumidifiers 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.  
Figure 2: Phoenix R175 control board.  
Toll-Free 1-800-533-7533  
3
 
cause the refrigerant pressure and temperature to drop. It  
next enters the evaporator coil where it absorbs heat from  
the incoming air and evaporates.  
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.  
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.  
4.2 Storage  
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.  
There are two issues to consider when the Phoenix  
Rꢀ75 is stored between uses and both pertain to the  
water trapped in the unit: damage caused by freezing or  
biological growth. The effect of the trapped water can be  
greatly reduced if precautions are taken to remove as  
much as possible before storage.  
ꢀ. Use the pump PURGE button to reduce the water level  
in the reservoir  
2. Walk out the hose to drain it completely  
In order to reduce biological growth flush the unit with  
a biofungicide that is approved for use with copper,  
aluminum, polyethylene and ABS. To ush:  
ꢀ. Run the hose to a drain  
2. Plug in the unit but do not turn it on  
3. Remove the air filter. Slowly pour a pint of the  
chemical through the top so that it drains into the heat  
exchanger  
4. Use PURGE button to remove chemicals in reservoir.  
Run PURGE until hose runs dry  
5. Walk out hose to drain completely  
6. Replace air filter  
Figure 3: Refrigeration system  
5.2 Troubleshooting  
No dehumidification, neither hour meter display nor  
compressor run and POWER button does not turn ON.  
5 Service  
ꢀ. Unit unplugged or no power to outlet  
2. Defective control board  
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.  
3. Loose connection in internal wiring  
No dehumidification, neither hour meter display nor  
compressor run with POWER button ON.  
ꢀ. Defective control board  
CAUTION: Do not operate unit without the front housing in  
place.  
2. Loose connection in internal wiring  
Some dehumidification, air mover runs continuously but  
compressor only runs sporadically.  
5.1 Technical Description  
The Phoenix Rꢀ75 uses a refrigeration system similar to  
an air conditioners to remove heat and moisture from  
incoming air and to add heat to the air that is discharged.  
ꢀ. 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  
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  
6. Defective relay  
7. Upper housing is not sealed to lower housing  
Toll-Free 1-800-533-7533  
4
 
No dehumidification, air mover runs but compressor does  
not.  
Compressor runs with POWER button OFF.  
ꢀ. Defective relay  
ꢀ. Bad connection in compressor circuit  
2. Safety float switch closed, check pump reservoir  
3. Defective compressor capacitor  
4. Defective compressor overload  
5. Defective compressor  
2. Defective control board  
3. Upper housing not sealed to tower  
No hour meter display when the HOURS button is pressed.  
ꢀ. Unit is plugged in  
2. Battery charge is low. Replace battery  
3. Defective control board  
6. Defective control board  
Air mover does not run. Compressor runs briefly but cycles  
on and off.  
5.3 Air Mover  
The motorized impeller has a PSC motor and internal  
thermal overload protection. If defective, the complete  
assembly must be replaced.  
ꢀ. Loose connection in blower circuit  
2. Obstruction prevents impeller rotation  
3. Defective air mover  
ꢀ. Unplug power cord  
2. Remove the four screws attaching the bottom plate to  
the lower housing  
Unit removes some water but not as much as expected.  
3. Disconnect the impeller leads  
ꢀ. Air temperature and/or humidity have dropped  
4. Remove the four screws holding the impeller to the  
bottom plate  
2. Humidity meter and/or thermometer used are out of  
calibration  
5. Reassemble the new impeller using the above  
procedure in reverse  
3. Unit has entered defrost cycle  
4. Air filter dirty  
5. Defective defrost thermistor  
6. Low refrigerant charge  
5.4 Thermistor  
The defrost thermistor is  
attached to the refrigerant  
suction line between  
the accumulator and the  
evaporator.  
7. Air leak such as loose cover  
8. Defective compressor  
9. Restrictive exhaust or inlet ducting  
Unit runs but does not pump water.  
ꢀ. Hose kinked or plugged  
To replace thermistor:  
Figure 4: Thermistor attached  
to the refrigerant line.  
ꢀ. Unplug the dehumidifier  
2. Pump motor defective  
2. Remove the front housing  
3. Pump check valve plugged  
4. Bad connection in pump circuit  
5. Hose disconnected internally  
6. Defective control board (pump phase)  
3. Cut cable ties and remove aluminum tape.  
4. Remove control panel  
5. Unthread thermistor from control housing grommet  
6. Detach thermistor from control board jumper, Jꢀ  
7. Reassemble thermistor and dehumidifier using the  
above procedure in reverse  
Unit pumps water automatically but not when PURGE  
button is pushed.  
ꢀ. Bad connection in PURGE button circuit  
2. Defective control board  
Evaporator coil frosted continuously, low dehumidifying  
capacity.  
ꢀ. 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  
Figure 5: Picture of pump and reservoir.  
Toll-Free 1-800-533-7533  
5
 
5.5 Condensate Pump  
The internal condensate pump removes water that collects  
in the reservoir.  
6 Options & Accessories  
4025568  
4024750  
Air Filter, Pleated ꢀ2” x ꢀ2” x ꢀ” MERV-ꢀꢀ  
Intake Flex Duct ꢀ2” x 25”  
Metallize Polyester  
To replace the condensate pump:  
ꢀ. Unplug the unit  
4024935  
Lay-Flat Duct ꢀ0” Round x 250’ Roll  
2. Remove the front housing  
3. Unplug the pump wires from the wire harness  
To order, contact Therma-Stor LLC at ꢀ-800-533-7533.  
7 Wiring Diagram  
THERMISTER  
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.  
J3  
BLU-14  
J1 J2  
E2  
E3  
E1  
E4  
BLK-4  
E5  
S
C
FLOAT  
SWITCH  
R
COMPRESSOR  
BLOWER MOTOR  
4026354  
CONDENSATE PUMP  
Figure 6: Picture of the float safety switch  
WHT  
BLK  
CONTROL  
BOARD  
BLK  
E1  
To replace the float safety switch  
ꢀ. Unplug the dehumidifier  
2. Remove the front housing  
WHT  
BRN  
BLU  
E2  
RUN CAP  
7.5 MFD  
BLK  
E4  
3. Unplug the float safety switch wires from the wire  
harness  
BLOWER MOTOR  
YEL  
YEL  
J3  
4. Remove the one screw attaching the pump and float  
switch bracket to the compressor support  
FLOAT SWITCH  
5. Remove the pump from the reservoir and slide out the  
float switch from under the compressor support  
BLK  
WHT  
E5  
E3  
CONDENSATE PUMP  
6. Replace the float, pump, wiring, bolts and housing in  
the reverse order  
COMPRESSOR  
OVERLOAD  
RUN CAP  
25 MFD  
S
YEL  
C
BLK  
R
RED  
COMPRESSOR MOTOR  
Figure 7: Wiring diagram  
Toll-Free 1-800-533-7533  
6
 
8 Service Parts  
Items listed are not shown  
Description  
Item  
Description  
Qty  
Part No.  
Qty  
Part No.  
Top Cover  
40263ꢀ6  
Compressor  
4023648  
2
Top Cover Latch  
2
2
2
4026322  
4026323  
ꢀꢀ540ꢀ9  
ꢀꢀ540ꢀ4  
402634ꢀ  
4026304  
40263ꢀ2  
402660ꢀ  
40263ꢀ5  
40249ꢀ6  
4026306  
4026307  
4025078  
4026326  
40249ꢀ2  
4024548  
4026602  
ꢀ9ꢀ2500  
Evaporator Coil  
Condenser Coil  
Accumulator  
4
4026343  
4026345  
4026357  
4026333  
4026339  
4026360  
4026308  
4026309  
ꢀꢀ54006  
3
Latch Backstop  
4
Hex Bolts, ꢀ/4”–20 x 4” 4  
Hex Bolts, ꢀ/4”–20 x ꢀ.75”  
Handle Assembly  
5
Condensate Pump  
Float Safety Switch  
Impeller, Air Mover  
Exhaust Grill  
6
7
Wheel, ꢀ2”  
8
Retaining Ring  
9
Control Interface  
Wire Duct Collar  
Impeller Plate Bolt  
ꢀ0  
ꢀꢀ  
ꢀ2  
ꢀ3  
ꢀ4  
ꢀ5  
ꢀ6  
ꢀ7  
ꢀ8  
ꢀ9  
Filter, 2” x ꢀ2” x ꢀ”  
Hose (ꢀ/4” ID x 33’ long)  
Coupling Body, ꢀ/4” Tube  
Coupling Insert, 3/8” Tube  
Cord  
Control Board  
Capacitor, Compressor, 25 μF  
Capacitor, Impeller, 7.5 μF  
Thermistor  
Battery, 9.0 V  
1
6
10, 11,  
12, 13,  
14  
2, 3  
4
9
15, 16,  
17, 18,  
19  
5
7, 8  
Specifications subject to change without notice.  
Toll-Free 1-800-533-7533  
7
 
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Toll-Free 1-800-533-7533  
8
 
Phoenix R175 Dehumidifier Limited Warranty  
Warrantor:  
Therma-Stor LLC  
PO Box 8680  
Madison, WI 53708  
Telephone: ꢀ-800-533-7533  
Who Is Covered: This warranty extends only to the original end-user of the Phoenix Rꢀ75  
dehumidifier, and may not be assigned or transferred.  
Year One: Therma-Stor LLC warrants that, for one (ꢀ) year the Phoenix Rꢀ75 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 Rꢀ75 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 LLCs reasonable  
control.  
Limitation and Exclusions: If any Phoenix Rꢀ75 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 Rꢀ75  
Dehumidifier is out of service while awaiting covered warranty service).  
UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE PHOENIX Rꢀ75  
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 Rꢀ75 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.  
Toll-Free 1-800-533-7533  
9
 

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