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INSTALLER’S & OWNER’S MANUAL

HVAC INSTALLER: PLEASE LEAVE MANUAL FOR HOMEOWNER

Dehumidification

 

The Ultra-Aire SD12 is a split system dehumidifier that removes over 
180 pints of water a day while adding no sensible heat load to the 
living space.  The dehumidifying unit is located inside the house and 
the condensing coil is located outside.  The two-piece design allows 
the sensible heat load generated from dehumidifying the house to be 
released in the outside condensing unit, thus eliminating additional 
cooling load and reducing air conditioner run time.

Sensible Cooling

The Ultra-Aire SD12 provides approximately 1/3 ton sensible 
cooling to the living space, allowing for first stage cooling and 
moisture removal. The HVAC system can be used as a second stage 
and be thermostatically set to a higher temperature to provide 
additional cooling if needed. By eliminating the HVAC system’s need 
to control latent load, the Ultra-Aire SD12 allows the system to work 
more efficiently.

Fresh Air Ventilation 

Optional fresh outdoor air may be ducted to the unit via a six inch 
round duct. This provides fresh air to dilute pollutants and replenish 
oxygen content in the building. The amount of fresh air ventilation 
can be regulated by a variety of dampers and controls.

Air Filtration

The Ultra-Aire SD12 includes air filtration to improve indoor air 
quality. A MERV-11 media filter is standard. An optional external  
filter box with a MERV-14 deep pleated 95% media filter is  
available for optimum air filtration and to reduce potentially  
harmful airborne particles. 

© 2012 Therma-Stor LLC • Manual P/N TS-712

4201 Lien Rd Madison, WI 53704 

 TOLL-FREE 1-800-533-7533 

 www.thermastor.com 

 sales@thermastor.com

P/N 4033170  •  Serial No.________________________ Install Date:___________ 
Sold by:

PATENT PENDING:  
D570,988

Summary of Contents for 4033170

Page 1: ...gher temperature to provide additional cooling if needed By eliminating the HVAC system s need to control latent load the Ultra Aire SD12 allows the system to work more efficiently Fresh Air Ventilation Optional fresh outdoor air may be ducted to the unit via a six inch round duct This provides fresh air to dilute pollutants and replenish oxygen content in the building The amount of fresh air vent...

Page 2: ...stallation in an Attic with an Existing Forced Air HVAC System 13 3 9F Installation in a Structure with Two Forced Air HVAC Systems 13 3 9G Installation in a Structure with No Existing Forced Air HVAC System 13 3 10 Quiet Installation 13 3 11 System Start Up 13 4 Controls 13 14 5 Optional Dehumidifier Ventilation System Controller 15 6 Maintenance 16 6 1 Standard Air Filter 16 6 2 High Efficiency ...

Page 3: ...ly before installing and operating this device Proper adherence to these instructions is essential to obtain maximum benefit from your Ultra Aire SD12 indoor air quality system WARNING IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTAINCE CAN CAUSE PERSONAL INJURY LOSS OF LIFE OR DAMAGE TO PROPERTY INSTALLATION AND SERVICE MUST BE PERFORMED BY A LICENSED PROFESSIONAL INSTALLER OR EQUIV...

Page 4: ...hed living area or above an area where water leakage could cause damage Place the Ultra Aire SD12 on supports that raise the base of the unit 2 5 above the drain pan beneath it Raising the Ultra Aire SD12 will help the dehumidifier drain with gravity flow Do not place the Ultra Aire SD12 directly on structural building members without vibration absorbers or unwanted noise may result The Ultra Aire...

Page 5: ...T IN DAMAGE TO ROOF SURFACE Mount the base of the condensing unit to a sturdy level pad or bracket using 3 8 10mm bolts The condensing unit may be mounted to a wall with brackets or placed on a roof Ensure the mounting of the condensing unit can withstand strong winds and earthquakes when mounting above ground level Vibration dampening material may be installed between the condensing unit base and...

Page 6: ... sunlight or near a pool or spa The installer must supply the control wiring between the Ultra Aire SD12 dehumidifier the condensing unit the remote control and any electrical accessories Carefully route the control wiring to prevent damage during installation Be careful not to cross the wires when connecting the Ultra Aire SD12 Dehumidifier and the remote control or damage to the transformer may ...

Page 7: ...ter use either metal strapping material or anchored heavy nylon wire ties ANCHORED HEAVY NYLON WIRE TIRE OR AUTOMOTIVE MUFFLER TYPE HANGER AUTOMOTIVE MUFFLER TYPE HANGER WALL STUD STRAP LIQUID LINE TO VAPOR LINE LIQUID LINE VAPOR LINE WRAPPED IN ARMAFLEX NON CORROSIVE METAL SLEEVE VAPOR LINE WRAPPED WITH ARMAFLEX LIQUID LINE CALK PVC PIPE FIBERGLASS INSULATION OUTSIDE WALL 8 FEET STRAPPING MATERIA...

Page 8: ...h stub tubes of condensing unit These service ports can be used to introduce and release nitrogen during brazing Use the following procedure to connect the line set to the Dehumidifier CAUTION THE DEHUMIDIFIER IS SHIPPED FROM THE FACTORY PRESSURIZED WITH A CHARGE OF INERT GAS AND WITH RUBBER PLUGS IN THE LINES PURGE THE INERT GAS FROM THE DEHUMIDIFIER BY REMOVING THE RUBBER PLUGS IN THE LIQUID AND...

Page 9: ...ECOVERED RESPONSIBLY FAILURE TO FOLLOW THIS WARNING MAY RESULT IN PERSONAL INJURY OR DEATH 1 Connect the HFC 410A manifold gage set high pressure hose to the service port on the suction gas line Note Connecting the high pressure hose to the service port on the gas line will protect the manifold gage set from high pressure damage during leak testing Cap liquid line service port 2 Make sure all of t...

Page 10: ... to charge the system FOR HVAC INSTALLER ONLY 3 7 Charging the System The condensing unit is pre charged with 42 oz of HFC 410A refrigerant The installer will add HFC 410A refrigerant for the dehumidifier and line set 1 Calculate the amount of HFC 410A required by determining the length of the line set and performing the calculation below i 11oz 2 2oz per every 10 feet of line set length Total cha...

Page 11: ...eparate supply duct from the Ultra Aire SD12 to each isolated area is recommended DO NOT draw air directly from the kitchen laundry or isolated basement You may draw air from a basement that is open to the home All flexible ducting connected to the Ultra Aire SD12 should be UL listed The inlet of the Ultra Aire SD12 is the 10 diameter hole in the filter enclosure of the unit A 10 round collar is s...

Page 12: ...lter enclosure of the unit The 6 round collar includes a manual damper Adjust the manual damper to provide the desired amount of fresh air for ventilation The amount of fresh air should be based on the size and occupancy of the residence If you are unsure of your ventilation air requirements consult the factory by calling 1 800 533 7533 for assistance or check your local building codes 3 9D Instal...

Page 13: ...f the struc ture such as bedrooms den etc By ducting this way the air inside the structure will circulate through the Ultra Aire SD12 to be filtered and dehumidified Avoid discharging all the air from the dehumidifier in one location to prevent overcooling that area 4 diameter duct is recommended for branches to the bedrooms 6 diameter duct is recommended for branches to larger areas Refer to sect...

Page 14: ...DAMAGE the transformer Dehumidifier on Connect yellow and blue wires Fan only on Connect yellow and green wires Accessory power 24volt AC power supply available for HVAC accessories between yellow and white and or red wire Red and white wires are common with each other FIGURE 15 Ultra Aire DEH 3000 Dehumidification Ventilation Control YELLOW BLUE GREEN WHITE Internal Connections OPTIONAL DAMPER 24...

Page 15: ...nt 35 min 70 max Auxillary Relay Capacity 5 Amps 24VAC Temp Range Accuracy 30 90 F 2 F Size 4 95 L x 1 06 W x 4 19 H Major Operations n Digital control of Relative Humidity Digital Set Point n Fan Filter Operation n Programmable Ventilation Timer n Large easy to read backlit LCD display n Easy interaction with air handler fan Interlock Lockout n High Temperature Cut Out n Dryout Cycle Timer n Auto...

Page 16: ...d during the seasons when there are many particles in the outdoor air 6 5 Condensing Unit Maintenance The compressor and fan motor inside the condensing unit are permanently lubricated for many years of normal operation so maintenance is not required Keep the condensing unit clean and free from debris Check the coil and other openings on the condensing unit for debris that will obstruct airflow Th...

Page 17: ...unplugged or no power to outlet 2 Loose connection in dehumidifier fan circuit 3 Obstruction prevents fan impeller rotation 4 Defective fan 5 Defective fan relay 6 Defective impeller run capacitor Low dehumidification capacity evaporator is frosted continuously Dehumidification is being called for 1 Defrost thermostat loose or defective Sec 7 9 2 Low refrigerant charge 3 Dirty air filter s or dehu...

Page 18: ...st be replaced if continuity exists across its terminals If there is no needle movement with the meter set on the Rx100000 FOR HVAC INSTALLER ONLY scale the capacitor is open and must be replaced 4 Mark the location of the fan blade on the motor shaft Remove the fan blade from the motor shaft and slide it to the front of the condensing unit 5 Disconnect the fan leads inside the electric box 6 Remo...

Page 19: ...tor and an over sized liquid line filter In a running burn out install an oversized suction line filter drier be tween the accumulator and compressor Thoroughly flush the accumu lator with refrigerant to remove all trapped sludge and to prevent the oil hole from becoming plugged A standing burn out does not require a suction line filter drier 7 Evacuate the system with a good vacuum pump and accur...

Page 20: ...ing is correct and that voltage is present at the damper motor 2 Check for any obstruction inside the damper If the electric ventilation damper fails to operate after performing these checks it must be replaced 7 11 Condensate Pump Kit An optional condensate pump kit is available from the factory for use with the Ultra Aire SD12 Condensate is automatically pumped to a remote location when the wate...

Page 21: ...ICE PARTS LIST Condensing Unit Item Part No Qty Description 2 4033211 1 Nut 3 4033212 1 Fan Axial 16 4033213 1 Compressor 20 4033214 1 Capacitor 23 4033216 1 Capacitor Fan Motor 30 4033215 1 Motor 31 4022484 1 Relay Item Part No Qty Description 6 4029508 1 Low Pressure Switch 7 4026657 1 Impeller 8 4033031 07 1 Blower Capacitor Run 15 MFD 370V 9 4020924 2 Blower Relay SPDT 24V 15A 10 4022487 1 XFM...

Page 22: ...f mounting hardware from inside the rectangle opening Mount the duct collars to the front of the dehumidifier using screws provided Collars and hardware are located here Door Install Insert tab on the bottom of the door in between the foam installation and the metal side Push down on the plastic door latch and swing door shut Once the door is shut release the door latch DOOR AND COLLAR ASSEMBLY 40...

Page 23: ...costs related to changes to a Product or Component that may be required by any codes laws or regulations that may become effective after initial purchase of the Product by Customer Customer Responsibilities As a further condition to obtaining war ranty coverage hereunder the Customer must send a valid warranty claim to Therma Stor such that Therma Stor receives such claim prior to the end of the a...

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