Therma Stor Products Group Dehumidifier 4025273 User Manual

Issue 09/04  
Santa Fe HC Dehumidifier  
The Santa Fe HC dehumidifier performs multiple  
functions in a compact enclosure, including  
high-capacity dehumidification and air filtration.  
True Performance  
Off-the shelf, appliance grade dehumidifiers rate  
their dehumidification capacities at 80°F, 60%  
relative humidity (RH). The performance of these  
devices drops significantly at cooler temperatures  
typically found in basements and crawlspaces.  
That means you may have to purchase multiple  
off-the-shelf units to meet the performance of a  
single Santa Fe HC.  
• The Santa Fe HC is controlled by a dehumidistat  
with positive “ON” and “OFF” settings with a  
variable humidity setpoint range of “20%” to  
“80%. Humidity control is automatic and accurate.  
• Low-temperature operation. The Santa Fe HC can continue  
to remove humidity down to 55°F and will not freeze-up in  
normal basement conditions.  
Figure 1: Santa Fe HC  
P/N 4025081  
• 115 VAC operation. A factory installed six foot power cord which plugs  
into a standard 15 amp grounded outlet. The Santa Fe HC draws less  
than 12 amps.  
• Gravity water drain.  
• The Santa Fe HC removes 135 pints of water per day, which is many  
times the water removal of other dehumidifiers.  
• Optional ductability promotes air distribution or allows remote location.  
Features and Benefits  
Dehumidification  
Integrated Filtration  
Ducted or Free-Standing  
Compact  
The Santa Fe HC dehumidifier is designed to provide uncompromised indoor air  
quality. The Santa Fe HC provides particulate filtration and humidity control in a single  
compact free-standing or ducted (optional) enclosure. At the heart of the HC is a  
high capacity, energy efficient dehumidifier capable of removing over 16.8 gallons  
of water per day (at 80°F, 60% relative humidity) while using less than 13 amps of  
electricity (120V). The unit maintains indoor humidity levels below 50%, the level  
widely recognized as critical for controlling mold, mildew and dust mite populations.  
Figure 2: Features and Benefits  
© Copyright Therma-Stor LLC  
Manual P/N 4025273  
1
 
4.1A in Humid Area, No Ducting (Fig. 4)  
The simplest installation is to place the Santa Fe  
HC in the humid area with no ducting. To ensure  
optimal performance the air inlet and the outlet  
of the unit must be at least 1' from walls and  
other obstructions to air flow.  
Inlet  
Output  
Figure 4: Installation in humid area with no ducting.  
4.1B In The Humid Area, Duct Inlet  
and/or Outlet (Fig. 5)  
Inlet  
If the humid area is large or has high ceilings,  
dehumidification can be improved by adding an  
inlet and/or outlet duct to circulate and destratify  
stagnant areas. For a large area, add inlet or  
outlet ducting to create flow across the area's  
greatest length.  
Output  
For areas with ceilings higher than 12', use an inlet  
duct to draw warm, moist air from near the ceiling.  
See section 5 for attaching duct collars & ducting.  
Figure 5: Installation in humid area with inlet and outlet ducting.  
Inlet  
Output  
4.1C In A Remote Area, Duct  
Inlet & Outlet (Fig. 6)  
It is often desirable, especially in recreational rooms  
and finished areas, to install the Santa Fe HC in an  
adjacent equipment room or unfinished area. Air is  
transferred between the humid room and the unit  
via ducting. The factory mounted humidity control  
on the Santa Fe HC cabinet may not sense the  
humidity in the humid room accurately enough with  
this installation method. If so, a remote humidity  
control can be mounted in the humid room and  
wired to the Santa Fe HC. Refer to the optional  
equipment table in this document. Local electrical  
codes must be followed when wiring the control.  
Figure 6: Installation in a remote area with ducted inlet and outlet.  
Santa Fe HC Owners Manual  
3
 
4.1D In A Remote Area, Duct Outlet Only (Fig. 7)  
A simplified remote installation method than above  
uses ducting between the Santa Fe HC discharge  
and the humid room; the Santa Fe HC inlet draws air  
from the room in which it's located. This works well if  
there is an adequate air flow path between the two  
rooms; e.g. high door undercut, louvered door or wall  
grill. This eliminates the need to remote mount the  
humidity control.  
Output  
WARNING  
Inlet  
Before installing the dehumidifier in the manner  
described in section 4.1D (Fig. 7), call the factory  
for specific instruction if backdraft devices (i.e.  
hot water heaters) are present in the space to  
be dehumidified.  
4.1E In A Remote Area, Duct Inlet Only (Fig. 8)  
When the Santa Fe HC is located in a room separate  
from the main area to be dehumidified, it may be  
desirable to dehumidify and/or slightly pressurize  
that room. Pressurization assures that open combustion  
devices do not back draft. This can be prevented by  
installing a duct from the humid room to the Santa  
Fe HC inlet and by allowing the Santa Fe HC to dis-  
charge dehumidified air into the room in which it's  
located. An adequate air flow path must exist  
Figure 7: Installation in a remote area with ducted outlet only.  
Inlet  
between the two rooms for this method to work well.  
A remote humidity control may need to be mounted  
in the humid area and wired to the Santa Fe HC  
to accurately maintain the desired humidity. Local  
electrical codes must be followed when wiring the  
control.  
Output  
4.2 Remote Humidity Controls  
All remote humidity controls should be mounted in a  
central area of the the space to be dehumidified where it  
can accurately sense the humidity of the air in the living  
space and be accessed. All controls require field wiring  
from the unit location to the panel mount location.  
Figure 8: Installation in a remote area with a ducted inlet only.  
4.4 Condensate (Water) Removal  
Condensate drains by gravity via the clear hose extending  
from the unit. Use care to keep the hose as flat to the  
floor as possible. Excessive humps or kinks will prevent  
proper drainage. If the Santa Fe HC is located too far  
from a floor drain for the attached hose to reach, 1/2"  
PVC pipe can be used to extend it. It is commonly  
available in 10' lengths from building supply, plumbing  
and hardware stores. It will slide tightly inside the end  
of the drain hose. Space and location requirements  
should be taken into account when incorporating a  
trap for the assembly as shown in Figure 12.  
Figure 9:  
Humidity/Fan  
Control Panel  
P/N 4024155  
4.3 Electrical Requirements  
The Santa Fe HC plugs into a common grounded outlet  
on a 15 Amp circuit. It draws between 12 and 13 Amps  
under normal operating conditions. If used in a wet area  
(pool, spa room, or basement prone to flooding), a ground  
fault interrupter protected circuit is recommended.  
IMPORTANT  
For proper drainage, the unit must be mounted so the  
drain outlet is at least 4” above the floor drain, and  
must be fully supported under the base.  
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Santa Fe HC Owners Manual  
 
4.5 Drainage and Trap  
6 Operation  
The Santa Fe HC requires a trap. Unit should be located in an  
area where the unit’s condensate (water) may be easily routed  
to a suitable drain.  
6.1 Humidity Control Adjustment  
Figure 13: Humidity control dial.  
Thread the PVC barb fitting into the drain outlet on the front  
of the unit. Push the hose onto the barb fitting past two  
barbs minimum to ensure a good fit.  
Figure 11: Drain outlet  
Figure 10: PVC  
barb fitting.  
Route the drain hose through the trap as shown in Figure 12.  
Position the trap on the hose approximately 12” away from  
the unit.  
Figure 14: Humidity control label on unit.  
The humidity control is an adjustable switch that closes when  
the relative humidity of the air in which it is located rises to  
the dial set point. It opens when the RH drops 4 to 6% below  
the set point.  
Approximate Humidity Levels Per Setting  
“Low”  
“Normal” 45% to 55% Relative Humidity (Recommended)  
“High” 55% to 65% Relative Humidity  
35% to 45% Relative Humidity  
Figure 12: Trap Diagram  
5 Ducting  
The dehumidifier will run continuously until the relative  
humidity (RH) is reduced to the humidity control dial setting.  
The Santa Fe HC unit (and refrigerant based dehumidifiers in  
general) will reduce a warm space's RH to a lower level than  
that of a cool space. Therefore there is no benefit to set the  
humidity control to excessively low levels in cool rooms. Doing  
so will result in long periods of ineffective dehumidifier run time.  
5.1 Optional Ducting Kit  
An inlet shroud with a 10" round collar and an 10" round  
exhaust collar are available from the factory that will allow  
round ducting to be attached to the inlet and/or outlet of  
the Santa Fe HC. Refer to the optional equipment table  
in this document.  
Quality humidity meters are available from the factory and  
are recommended to accurately monitor humidity levels.  
Refer to the options and accessories table in this document.  
5.2 Ducting for Dehumidification  
Ducting the Santa Fe HC requires consideration of the  
following points:  
Duct Sizing: For total duct lengths up to 50 feet, use a  
minimum 8" diameter round or equivalent rectangular.  
For longer lengths, use a minimum 10" diameter or  
equivalent. Grills or diffusers on the duct ends must  
not excessively restrict air flow.  
Isolated Areas: Effective dehumidification may require  
that ducting be branched to isolated, stagnant areas. Use  
6" diameter branch ducting to each of two or three areas,  
use 4" to each of four or more areas.  
Santa Fe HC Owners Manual  
5
 
the refrigerant pressure and temperature to drop. It next  
enters the evaporator coil where it absorbs heat from the  
incoming air and evaporates.  
6.2 Blower (Fan) Switch  
Turning “ON” the fan switch will cause the unit's internal  
blower to run continuously, whether the unit is dehumidifying  
or not. This function is desirable if the unit is used for air  
circulation.  
Turning “OFF” the fan switch will cause the unit’s internal  
blower to run only while the unit is dehumidifying.  
Figure 15: Blower  
fan switch.  
7 Maintenance  
WARNING  
Figure 16: Santa Fe HC refrigeration system.  
NOTE: Do not operate the unit without the filter or with  
a less effective filter. The heat exchange 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. 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 gas to repeat the process.  
7.1 Air Filter  
The Santa Fe HC ships with a pleated fabric filter standard.  
This should be checked monthly. Operating the unit with a  
dirty filter will reduce dehumidifier capacity and efficiency  
and may cause the compressor to cycle on and off unnecessarily.  
The pleated fabric filter can generally be vacuumed clean  
several times before needing replacement. Replacement  
filters can be ordered from the factory. To order a replacement  
filter, refer to the options and accessories table in this document.  
8.2 Troubleshooting  
No dehumidification, neither blower nor compressor run with  
fan switch OFF.  
1. Unit unplugged or no power to outlet.  
2. Humidity control set too high or defective.  
3. Loose connection in internal wiring.  
7.2 Blower Oiling  
The blower motor has been lubricated at the factory for many  
years of normal operation.  
No dehumidification, compressor does not run but blower  
runs with fan switch OFF and humidity control turned to ON.  
1. Defective compressor or compressor run capacitor.  
2. Loose connection in compressor circuit.  
3. Defective compressor overload.  
8 Service  
IMPORTANT  
WARNING: Servicing the Santa Fe HC 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.  
4. Defrost thermostat open.  
Blower runs with fan switch OFF, but compressor cycles on & off.  
1. Low ambient temperature and/or humidity causing unit to  
cycle through defrost mode.  
2. Defective compressor overload.  
3. Defective compressor.  
8.1 Technical Description  
The Santa Fe HC uses a refrigeration system similar  
to an air conditioner's to remove heat and moisture from  
incoming air, and 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  
4. Defrost thermostat defective.  
Blower does not run with fan switch in either position.  
Compressor runs briefly but cycles on & off.  
1. Loose connection in blower circuit.  
2. Obstruction prevents impeller rotation.  
3. Defective blower.  
4. Defective blower switch.  
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Santa Fe HC Owners Manual  
 
Evaporator coil frosted continuously, low  
dehumidifying capacity.  
11 Wiring Diagram  
1. Defrost thermostat loose or defective.  
2. Low refrigerant charge  
3. Dirty air filter or air flow restricted.  
8.3 Defrost Thermostat  
The defrost thermostat is attached to the refrigerant suction  
tube between the accumulator and compressor. It will  
automatically shut the compressor off if the low side  
refrigerant temperature drops due to excessive frost  
formation on the evaporator coil. The blower will continue  
to run, causing air to flow through the evaporator coil and  
melt the ice. When the ice has melted, the evaporator  
temperature will rise and the thermostat will restart the  
compressor.  
9 Service Parts List  
PART NO.  
4021395  
4021396  
4021470  
4021589  
4025087  
4021469  
4025075  
4025076  
4025224  
4025244  
4025298  
4020554  
DESCRIPTION  
Coil, Evaporator  
Coil, Condenser  
Thermostat, Defrost Control  
Tube, CU, CPLRY  
Filter, Drier  
Controller, Humidity, Face Mount  
Compressor  
Fan, Motorized Impeller  
Capacitor, Impeller  
Capacitor, Run  
Overload, Compressor  
Switch, Rocker, On-Off  
Figure 17: Santa Fe HC Wiring Diagram  
Figure 18: Stand (P/N 4025463)  
10 Accessory/Replacement Parts  
4021475  
4021626  
4025264  
4021495  
4025463  
4025466  
Filter, Air  
Hose, Vinyl  
Trap, Drain  
Knob, Plastic, Black  
Stand  
Duct Collar Kit  
To order, contact your reseller or  
call 1-800-533-7533.  
Figure 19: Duct Collar Kit (P/N 4025466)  
Santa Fe HC Owners Manual  
7
 
Santa Fe HC Dehumidifier Limited Warranty  
and does not cover any defect, malfunction, etc.  
WARRANTOR:  
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.  
Therma-Stor LLC  
PO Box 8050  
Madison, WI 53708  
Telephone: 1-800-533-7533  
LIMITATIONS AND EXCLUSIONS: If any SANTA FE  
HC 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 SANTA FE HC  
Dehumidifier is out of service while awaiting  
covered warranty service).  
WHO IS COVERED: This warranty extends only  
to the original residential end-user of the SANTA  
FE HC dehumidifier, and may not be assigned  
or transferred.  
FIRST YEAR WARRANTY: Therma-Stor LLC  
warrants that, for one (1) year the SANTA FE HC  
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.  
UPON THE EXPIRATION OF THE WRITTEN  
WARRANTY APPLICABLE TO THE SANTA FE HC  
DEHUMIDIFIER OR ANY PART THEREOF, ALL  
OTHER WARRANTIES IMPLIED BY LAW, INCLUDING  
MERCHANTABILITY AND FITNESS FOR A  
SECOND THROUGH FIFTH YEAR WARRANTY:  
Therma-Stor Products further warrants that for a  
period of five (5) years, the condenser, evaporator,  
and compressor of the SANTA FE HC 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),  
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 PRODUCTS  
BASED ON ANY ORAL WARRANTY. IN NO EVENT  
SHALL THERMA-STOR PRODUCTS, IN CONNECTION  
WITH THE SALE, INSTALLATION, USE, REPAIR OR  
REPLACEMENT OF ANY SANTA FE HC 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.  
provided that all labor and transportation charges  
for the part(s) shall be borne by the end-user.  
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 LLC Service Department., which  
will then arrange for covered warranty service.  
Warranty service will be performed during normal  
working hours.  
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 limitation may not apply to you.  
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 only applies to residential applications,  
LEGAL RIGHTS: This warranty gives you specific  
legal rights, and you may also have other rights  
which vary from state to state.  
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Santa Fe HC Owners Manual  
 
Santa Fe HC Owners Manual  
9
 
PO Box 8050  
1919 S. Stoughton Road  
Madison, WI 53708  
Phone: 608-222-5301  
Fax: 608-222-1447  
Information in this document is subject to change without notice.  
No part of this document may be reproduced or transmitted in any  
form or by any means, electronic or mechanical, for any purpose,  
without the express written permission of Therma-Stor LLC.  
© 2004 Therma-Stor LLC. All rights reserved.  
10  
Santa Fe HC Owners Manual  
 

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