INSTALLER’S & OWNER’S MANUAL
HVAC INSTALLER: PLEASE LEAVE MANUAL FOR HOMEOWNER
Dehumidification
The highly efficient Ultra-Aire 100V dehumidifier utilizes refrigeration
to cool the incoming air stream below its dew point. This cooled and
drier air is used to pre-cool the incoming air stream resulting in a
significant increase in overall efficiency. After the pre-cooling stage,
the processed air is reheated by passing through the condenser coil.
The heat removed by the evaporator coil is returned to the air stream,
resulting in an overall temperature increase of the air leaving the unit.
The Ultra-Aire 100V is controlled by 24 volt remote wired controls. A
variety of controls are available suitable to various applications.
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 maintain
high oxygen content in the air. The amount of fresh air ventilation can
be regulated by a variety of dampers and controls.
Air Filtration
The UA-100V includes air filtration to improve indoor air quality. A
MERV-11 media filter is standard. An optional MERV-14 deep pleated
95% media filter is available for optimum air filtration and to reduce
potentially harmful airborne particles. If the optional filter is chosen,
the standard filter operates as a prefilter.
Part No. 4022200
Serial No.______________________________
© 2007 Therma-Stor LLC • Manual P/N TS-200, 8/07
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SAFETY PRECAUTIONS
Safety Precautions
Read the installation, operation and maintenance
instructions carefully before installing and operating this device.
Proper adherence to these instructions is essential to obtain
maximum benefit from your Ultra-Aire indoor air quality system.
READ AND SAVE THESE INSTRUCTIONS
• The device is designed to be installed INDOORS IN A SPACE THAT
IS PROTECTED FROM RAIN AND FLOODING.
• Install the unit with space to access the front panel for
maintenance and service. DO NOT INSTALL UNIT WITH THE FRONT
PANEL INACCESSIBLE.
• Avoid directing the discharge air at people, or over the water in
pool areas.
• If used near a pool or spa; be certain there is NO chance the unit
could fall into the water, splashed and that it is plugged into a GFCI
GROUND FAULT CIRCUIT INTERRUPT OUTLET.
• DO NOT use the device as a bench or table.
• DO NOT place the device directly on structural members.
• A drain pan MUST be placed under the unit if installed above a
living area or above an area where water leakage could cause
damage.
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the control wires leaving the Ultra-Aire may not be used with certain
control panels and should be left safely disconnected with wire
nuts taped onto the stripped ends. Be sure to consult the electrical
schematic in this manual or on the front panel of the Ultra-Aire
before making the control connections.
1. Intended Application for Ultra-Aire 100V
For the ideal installation, draw air from the central part of the home
and return it to isolated areas of the home like the bedrooms, den,
utility room, or family room. The ductwork of the existing heating
system can be used to supply air to the home.
WARNING: Do not allow the yellow lead from the Ultra-
Aire to contact the red lead or orange lead from the
Ultra-Aire or damage to the transformer will result.
2. Specifications
Model:
Ultra-Aire Indoor Air Quality System
110-120 VAC, 6.8 Amps, grounded
100 pints/day @ 80°F, 60% RH
Electrical:
Capacity:
NOTE: Reset the ventilation timer before attempting to
program after initial installation. The timer may not ..
operate correctly until it is reset.
Operating Temp. Range: 56°F min., 100°F max.
Air Flow:
255 CFM without external ducting
212 CFM @ .20 IWG external static
170 CFM @ .40 IWG external static
1 lbs., 14 oz. R-22
Round 8" & 6" inlets, 8" outlet
Pleated cloth: 2" X 16" X 20"
4" X 16" X 20"
3.3 Condensate Removal
Refrigerant Charge:
Duct connections:
Filter Size:
High Efficiency:
Size (w/o duct collars):
Weight:
Condensate drains by gravity via the clear hose extending from the
unit. Route the hose to a floor drain. Use care to keep the hose as flat
to the floor as possible; excessive humps will prevent proper drainage.
We do not call for a trap since there is an internal trap with this unit.
If the Ultra-Aire is located too far from a floor drain for the attached
hose to reach, inexpensive 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.
If more than one length of pipe is required, they can be joined with a
short piece cut from the end of the drain hose.
21" long x 17" wide x 42" high
119 lbs.
3. Installation
3.1 Location
The Ultra-Aire should be located near the existing air handling
system to minimize the required ductwork for connecting the
Ultra-Aire to the existing air handling system.The controls for the
Ultra-Aire are remote from the unit and must be located in the space
that is to be conditioned. The controls are low voltage (24 volt) and
should be connected to the Ultra-Aire with low voltage thermostat
cable.
An optional condensate pump may be installed if a lift is required to
dispose of the condensate. The condensate pump kit can be ordered
direct from the factory. See item 27 on page 21.
3.4 Ducting
3.4A Installing Duct Collars
The Ultra-Aire is equipped with 8" and 6" round inlet collars and
an 8" round white exhaust collar. The 8" and 6" round inlet collars
are designed with tabs that fold under the top of the Ultra-Aire . The
8" round white exhaust collar is attached to the Ultra-Aire by (4)
screws.
If fresh air ventilation is desired, thought should be given to the
location for the fresh air ducting. A 6" round duct will have to be
installed on the Ultra-Aire and run to the outside of the structure to
bring in fresh air. Use an 8" insulated round duct for lengths of more
than 25' or if more than 100 CFM is needed.
To install the inlet collars: Insert the tabs of the collar into the
hole in the top of the Ultra-Aire and fold the tabs up to attach to the
Ultra-Aire .
3.2 Electrical Requirements
The Ultra-Aire plugs into a common grounded outlet on a 15 Amp
circuit. It draws between 6 and 7 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 required.
To install the exhaust collar: Bend the (4) tabs toward the inside of
the collar 90°. Attach the collar to the Ultra-Aire cabinet using 1⁄2"
long #8 sheet metal screws. DO NOT use screws longer than 1⁄2" to
attach this collar or damage to the refrigeration system may result.
The installer must supply the wiring between the Ultra-Aire and the
control panel. Be sure to safely route the control wires to prevent
damage during installation. Be careful not to cross the wires when
connecting the Ultra-Aire and the remote control panel or damage to
the transformer may result.
3.4B Ducting for Dehumidification
For the ideal installation, draw air from the central part of the home
and return it to the isolated areas of the home like the bedrooms,
den, utility room, or family room. The ductwork of the existing
heating system can be used to supply air to the home. If the existing
supply goes to isolated areas of the home, discharge the supply of
the Ultra-Aire into the supply of the existing heating system. If the
existing heating system incorporates a central supply, installation of
The remote controls of the Ultra-Aire are powered by a low voltage
circuit (24 Vac) and must NEVER contact or be connected to a high
voltage circuit. The control wires leaving the Ultra-Aire and the
remote control panels are color coded to prevent confusion. Some of
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a separate supply duct from the Ultra-Aire to each isolated area is
recommended. DO NOT draw air directly from the kitchen, laundry,
or basement. All flexible ducting connected to the Ultra-Aire should
be UL listed.
to 125 CFM of outside air. Large quantities of outside air will impact
Ultra-Aire performance positively or negatively, depending upon the
difference between inside and outside air conditions. Consult the
factory by calling 1-800-533-7533 for recommendations regarding
the use of higher flows with your specific application.
The inlet of the Ultra-Aire is the 8" diameter hole on top of the unit.
An 8" round collar is supplied with the unit to attach to round duct.
The duct may be permanently attached to the collar. A 6" round
collar is provided with the unit to attach to the 6" hole in the top.
The 6" collar should be capped if fresh make-up air is not desired. If
fresh make-up air is desired see section 3.4C.
The outside air duct should be connected to the 6" round collar
on top 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.
The outlet of the Ultra-Aire is located on the side of the unit. A
second 8" round collar is supplied with the unit and can be attached
using the screws provided and the pre-punched holes in the cabinet
side.
3.4D Installation in a Basement or Crawlspace with an
Existing Forced Air HVAC System.
If the structure in which the Ultra-Aire is to be installed has an
existing forced air HVAC system, utilize the HVAC system to make
the Ultra-Aire installation easier.
A length of 10 feet or more of acoustical flex ducting on the outlet
of the Ultra-Aire will reduce air noise from the blower. A length of
flexible ducting on all Ultra-Aire duct connections is recommended
to reduce noise and vibration transmitted to rigid ductwork in the
structure.
If the existing system has multiple returns, select one to disconnect
from the existing forced air system and use it for the dedicated
Ultra-Aire return. Always select a return from a central location
in the structure in an area that is always open to the rest of the
structure. Do not use a return from a room that may have its door
closed much of the time.
Ducting the Ultra-Aire as mentioned in sections 3.4A-3.4G requires
consideration of the following points:
Duct Sizing: For total duct lengths up to 25', 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.
Basement Installation: Locate a separate return for the Ultra-Aire
in a central area of the structure. Duct the supply of the Ultra-Aire
to a 8" x 8" x 8" tee/damper that is 30% open to the basement.
Duct the other side of the tee to the air return of the existing HVAC
system. If the existing HVAC system has a central return, duct the
other side of the tee to the air supply of the existing HVAC system.
Isolated Areas: Effective dehumidification may require that ducting
be branched to isolated, stagnant areas. Use 6" or larger diameter
branch ducting to each of two or three areas; use 4" or larger to
each of four or more areas.
3.4C Ducting for Fresh Air
Fresh air can be brought into the structure by connecting a duct
from outside to the 6" Ultra-Aire inlet and by turning on the fan
switch or activating the humidity control on units with the humidity
control panel. Activate the ventilation timer on units with the
ventilating & humidity control panel to bring in fresh air. Advantages
of this form of ventilation include:
1. Outside air is filtered before entering the building.
2. Outside air will be dehumidified before entering if the Ultra-
Aire is running.
3. Drawing air from outside and blowing inside aids in slightly
pressurizing the structure. This helps prevent unfiltered and
undehumidified air from entering elsewhere. It also reduces
the potential for carcinogenic radon gas to enter and provides
makeup air for open combustion and exhaust devices like the
clothes drier, fireplace, and water heater.
4. The need for an alternate ventilation device may be eliminated.
An insulated 6" diameter duct is generally sufficient to provide up
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Connect a duct from outside to the 6" collar of the Ultra-Aire if you
wish to provide fresh make-up air.
3.4G Installation in a Structure with No Existing
Forced Air HVAC Systems
When installing the Ultra-Aire in a structure that does not have a
forced air HVAC system, a single return for the Ultra-Aire should
be installed in central open area of the structure. DO NOT locate
the return in a bathroom or a kitchen. The supply of the Ultra-
Aire should be located in the remote areas of the structure (such
as bedrooms, den, etc.). By ducting this way the air inside the
structure will circulate through the Ultra-Aire to be filtered and
dehumidified. Connect a duct from outside to the 6" collar of the
Ultra-Aire if you wish to provide fresh make-up air.
Crawlspace Installation: Locate a separate return for the Ultra-
Aire in a central area of the structure. Duct the supply of the
Ultra-Aire to a 8" x 8" x 8" tee/damper that is 30% open to the
crawlspace. Duct the other side of the tee to the air return of the
existing HVAC system. If the existing HVAC system has a central
return, duct the other side of the tee to the air supply of the existing
HVAC system. Connect a duct from outside to the 6" collar of the
Ultra-Aire if you wish to provide fresh make-up air.
3.4E Installation in an Attic with an Existing Forced
Air HVAC System
3.5 Quiet Installation
Loosen the compressor mounting bolts from the base of the unit.
Do not remove the bolts, but loosen them so the compressor
mounting grommets are not compressed. These bolts are tightened
at the factory to prevent damage during shipping. Loosening them
will reduce the amount of compressor vibration. Make sure none
of the compressor tubes are pressed against the cabinet or front
panel.
ALWAYS install a catch pan for condensate under the
Ultra-Aire in an attic or condensate may drip down on
the ceiling of the living space below.
Locate a separate return for the Ultra-Aire in a central area of the
structure. Duct the supply of the Ultra-Aire to the air supply of the
A length of 10 feet or more of acoustical flex ducting on the outlet
of the Ultra-Aire will reduce air noise from the blower. A length of
flexible ducting on all Ultra-Aire duct connections is recommended
to reduce noise and vibration transmitted to rigid ductwork in the
structure.
4. Controls
The Ultra-Aire can be equipped with various accessories to
enhance its operation. A remote control panel must be used with
the Ultra-Aire . There are two remote control panels from which to
choose. The humidity/fan control panel is used to control humidity
and the fan. The ventilation timer and humidity control panel is
used to control ventilation, humidity and the fan.
4.1 Humidity/Fan Control Panel
See Figure 1: The humidity/fan control panel automatically controls
the humidity of the living space. The humidity/fan control panel
contains an adjustable humidity control and a fan switch. This
panel should be mounted in a central area of the structure where
it can accurately sense the humidity of the air in the living space.
The panel has small perforations that must remain open to the air
within the living space for accurate humidity sensing.
existing HVAC system. If the existing HVAC system has a central
return, duct the supply of the Ultra-Aire to the air supply of the
existing HVAC system. Connect a duct from outside to the 6" collar
of the Ultra-Aire if you wish to provide fresh make-up air.
3.4F Installation in a Structure with Two Forced Air
HVAC Systems
The humidity/fan control panel can be used in conjunction with
the optional fresh air damper. When used with the optional fresh
air damper, the fan/filter switch will act as a fresh air ventilation
control. When the switch is ON (in this configuration), the fan will
run, the fresh air damper will open, and fresh air will be filtered
and brought into the structure. When the switch is OFF, the fresh air
damper will close and the fan will operate only when the humidity
control calls for dehumidification.
Attach the Ultra-Aire return to to a independent return from the
upper level. Attach the Ultra-Aire supply to the supply of the
basement HVAC system. This will promote circulation of air through
the whole structure from the upper level to the lower level through
the Ultra-Aire . If the Ultra-Aire is not connected to both HVAC
systems, it will not control the humidity and ventilation of the entire
structure. Connect a duct from outside to the 6" collar of the Ultra-
Aire if you wish to provide fresh make-up air.
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dehumidification or when the ventilation timer calls for ventilation.
4.2 Ventilation Timer and Humidity Control Panel
See Figure 2: The ventilation timer and humidity control panel
automatically controls both the ventilation and the humidity of
the living space. The ventilation timer and humidity control panel
contains an adjustable humidity control, a fan switch, and a
ventilation timer. This panel will control the humidity and allow
4.5 Ventilation Timer
The ventilation timer controls the fan and the motorized fresh
air damper. When the ventilation timer is activated, the central
conditioning unit will circulate the indoor air, and bring in fresh air
from outside. The ventilation timer should be set for the required
ventilation of the residence. The home should be ventilated with
fresh air whenever it is occupied.
The ventilation timer is an electronic timer that displays the current
time. This timer has a battery backup, so it will not require resetting
after a power outage. The one minute time increments of the
ventilation timer allow you to program the ventilation of your home
to fit your schedule.
Figure 1:
Humidity/Fan Control Panel
Part No. 4024155
Figure 2: Ventilation Timer
and Humidity Control Panel
Part No. 4024125
The ventilation timer has six programs with each program having
one “on” and one “off” event. A program allows the user to turn the
ventilation on at a certain day and time, then it allows them to turn
the ventilation off at a certain day and time. Each of these programs
can be repeated daily or weekly or during a specified block of days.
All six of the programs operate independently of each other.
programmed ventilation of the living space. This panel works
in conjunction with the optional fresh air damper to provide
ventilation.
This panel should be mounted in a central area of the structure
where it can accurately sense the humidity of the air in the living
space. The panel has small slots that must remain open to the air
within the living space for accurate humidity sensing.
If the timer fails to operate or operates erratically, check that
the control panel receives 24Vac from the Ultra-Aire . If 24Vac is
present at the control panel, reset the timer by pressing the reset
button at the bottom center of the timer face. The reset button is
the small recessed button with an R beneath it located below the
1…7 and h buttons. Press the reset button in until the display
disappears. Release the reset button. The display will reappear
as 00:00. Resetting the timer will clear the time and all program
settings. After resetting the timer, follow the instructions below to
set the correct time and ventilation programs.
4.3 Humidity Control Adjustment
Set the humidity control to the desired
humidity level for the home. The dehumidifier
will run continuously until the relative
humidity (RH) is reduced to the humidity
control dial setting. Setting the humidity
control to lower RH levels will NOT increase
Figure 3
the unit's dehumidification rate; the unit will
simply run longer to reduce the area's RH to
the setting. The Ultra-Aire unit (and refrigerant
Humidity Control
Adjustment Knob
The following instructions explain how to set the ventilation timer.
First, set the correct time on the timer by sliding the switch in
the upper right hand corner of the timer to the clock symbol +
and pressing the 1…7 (DAY), h (HOUR), and m (MINUTE) buttons.
Remember that this timer operates on a 24-hour (military time)
clock.
based dehumidifiers in general) will reduce a warm space's RH to a
lower level than that of a cool space. It is therefore pointless to set
the humidity control to excessively low levels in cool rooms; doing
so will result in long periods of ineffective dehumidifier run time.
Quality humidity meters are available from the factory and are
recommended to accurately monitor humidity levels.
Next, set the ventilation time schedule. Slide the switch in the
upper right hand corner to the program symbol P “ON” will appear
to the right of the time and the number “1” will appear in the lower
right hand corner of the display. The “1” and “ON” signify the turn
on time for the first program. Press the 1…7 button to choose
the days of the week for this program. You can choose Mon-Sun
Mon-Fri, Sat-Sun, or any single day of the week. The days chosen
are shown along the top of the display on the ventilation timer. Next
press the h button to set the hour for the start of the ventilation
period. Remember that this timer operates on a 24-hour clock.
Then press the m button to set the minutes past the hour to start
the ventilation. Now, with the ventilation start time set, press the
I/O button. The word “OFF” should appear to the right of the time
4.4 Fan/Filter Switch
Turning ON the fan/filter switch will cause
the central conditioning unit's internal fan
to run continuously, whether the central
conditioning unit is dehumidifying or not. This
function is desirable if the central conditioning
Figure 4
Fan/Filter Switch
unit is used for air circulation and filtration.
When the switch is ON, air will be constantly
filtered through the central conditioning
unit and circulated throughout the house. When the switch is
OFF, the fan will operate only when the humidity control calls for
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and the number “1” should remain in the lower right hand corner of
the display. The “1” and “OFF” signify the turn off time for the first
program. Set the turn off time using the 1…7, h, and m buttons in
the same way as described above and continue on to the second
through sixth programs. When setting the ventilation programs,
you can return to the current time display by sliding the switch in
the upper right corner of the timer to RUN. The slide switch in the
upper right must be set to RUN for the timer to operate with the
scheduled programs.
The slide switch in the upper left of the timer is used to choose
between automatic and manual operation of the timer relay. When
the slide switch in the upper left of the timer is set to AUTO mode,
the central conditioning unit will ventilate when the scheduled
programs call for ventilation. When the slide switch in the upper
left of the timer is set to manual (set to hand symbol on the the
right), the operation of the timer is controlled by the I/O button only.
Pressing the I/O button will switch the ventilation timer between
ON (detent) and OFF (detent). As you press the I/O button, “ON” or
“OFF” will be displayed to the right of the time. The “ON” or “OFF”
to the right of the time will indicate if the ventilation timer is on or
off. The I/O button will manually override scheduled programs if the
timer is in AUTO mode.
4.6 High Efficiency Air filter
A high efficiency air filter is available for the Ultra-Aire . This filter is
rated 90%-95% efficient by ASHRAE Dust Spot Test Method 52-76.
This filter is much more efficient than the standard air filter and is
able to catch much smaller particles that can aggravate allergies.
The high efficiency air filter is 4 inches thick and should be
installed in the filter enclosure directly below the standard air filter.
The standard air filter will act as a pre-filter for the high efficiency
air filter and will prolong the life of the high efficiency air filter.
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ATTENTION INSTALLER
WIRE THE UNIT AND CONTROL PACKAGE AS SHOWN IN THE DIAGRAM BELOW
Humidity/Fan Control Panel
Humidity
Control
D.BLU-5
YEL-2
Blower
Switch
GRN-6
PNK
GRN-6
WHT-1
RED-3
YEL-2
Dehumidifier
D.BLU-5
Control Part No. 4024155
Do not connect these leads
directly together or damage
to the transformer will result.
Ventilation Timer/
Humidity Control Panel
Optional
Damper
Humidity
Control
D.BLU-5
YEL-2
VIO-4
ORG
GRN-6
L.BLU
PNK
REd-3
GRN-6
WHT-1
RED-3
YEL-2
GRY
Control Part No. 4024125
Dehumidifier
D.BLU-5
DEH 3000 Digital Control
UA Base Unit
White
DMP COMP FAN
Control Part No. 4026570
WARNING: DO NOT allow the yellow lead from the unit to contact the red lead or the white lead from the
unit or damage to the transformers will result. Do not direct connect the white lead on the unit to the violet
lead on the ventilation control or damage to the transformer will result.
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5. DEH 3000 Digital Control
Installation Instructions
Control Part No. 4026570
5.1 Specifications
Part # (P/N)
Model:
4026570
DEH 3000 Digital Control
24 VAC
Electrical:
Humidity Range:
Humidity Accuracy:
Output:
Relay Capacity
Temp Range/Accuracy
Size
10 – 95% RH
+/- 5%
3 Amps 24 VAC
5 Amps
2%
4.95" wide x 4.19" high
5.2B Wiring
FOR HVAC INSTALLER ONLY:
5.2 Installation
This control panel must be installed in the conditioned space
and in accordance with all applicable codes and standards.
Follow the instructions below when installing and setting this
control.
WARNING:
DO NOT ALLOW THE YELLOW LEAD
FROM THE ULTRA-AIRE TO CONTACT THE RED OR WHITE LEADS
FROM THE ULTRA-AIRE OR DAMAGE TO THE TRANSFORMER
WILL RESULT
WARNING:
UNPLUG ULTRA-AIRE BASE UNIT
BEFORE WIRING CONTROL.
5.2A Install Instructions
1. Separate the front panel from the back panel by
depressing the middle sections of the top and bottom of
the front panel.
The installer must supply the wiring between the Ultra-Aire
and the control panel. Be sure to safely route the control wires
to prevent damage during installation. Be careful not to cross
the wires when connecting the Ultra-Aire and the remote
control panel or damage to the transformer may result.
2. Line the back panel up against the wall or flat surface
onto which it is to be mounted and drill in the appropriate
mounting holes.
The remote control of the Ultra-Aire is powered by a low
voltage circuit (24 VAC) and must NEVER contact or be
connected to a high voltage circuit. Some of the control wires
leaving the Ultra-Aire may not be used with certain control
panels and should be left safely disconnected with wire nuts
taped onto the stripped ends. Be sure to consult the electrical
schematic in this manual or on the front panel of the Ultra-
Aire before making the control connections.
3. Insert the screws and tighten down so they extend
approximately 1/8” from the back plate.
4. Align the back panel so that the control is level.
5. Tighten the screws to lock into position.
6. Make the electrical connections to the terminals on the
back panel as shown in the wiring diagram.
7. Reassemble the front to the back panel. Connect at the top
first, then at the bottom.
8. Test connections (see Section 2.6)
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Dehumidification
Operation
COM/NO
CLOSED
OPEN
COM/NC
OPEN
UA Base Unit
White
ON
OFF
CLOSED
Common uses (assuming standard thermostat wiring color
schemes as noted):
Disengage A/C during dehumidification
Redirect the yellow thermostat wire to the NC
terminal. Wire the yellow wire from the A/C to the
COM (B) terminal.
DEH 3000 Wiring Diagram
Engage A/C during dehumidification
DMP COMP FAN
Connect a wire from the “R” terminal on the the
thermostat to the “com” terminal on the DEH 3000.
Connect a wire from the “NO” terminal on the DEH
3000 to the “Y1” terminal on the thermostat.
WARNING:
TO AVOID TRANSFORMER DAMAGE
ONLY CONNECT WHITE WIRE TO CONTROL IF DAMPER IS USED.
5.2D Dehumidifier lockout/activation AC sensor
The control has the ability to activate the dehumidifier or
deactivate the dehumidifier when the air conditioner is
running.
The white wire controls the optional motorized damper
that can be installed into a fresh air duct. This provides
the ability to control when fresh air is introduced into the
building by using the ventilation timer function labeled
“DMP” on the control (See Section 3.7). If the motorized
damper is not used, DO NOT CONNECT THE WHITE WIRE
TO THE CONTROL OR DAMAGE TO THE TRANSFORMER
MAY RESULT. Simply leave the (DMP) terminal unused if
the damper is not used, and cap off the white lead fro mthe
Ultra-Aire base unit.
5.2C Auxiliary relay operation
At times it may be desirable to coordinate fan operation
of the central heating/cooling system with dehumidifier
operation. The DEH 3000 features a relay that provides
this ability. The relay terminals labeled NC, COM and
NO operate according to the following chart:
Standard wire colors for thermostats are as follows:
Description
24VAC Return
Call for Heat
Force Fan On
Color
Red
Terminal code
R
White
Green
W or W1
G
Compressor
Call for Cooling
Yellow
Y or Y1
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DEHUMIDIFIER DEACTIVATES WHEN THE
AIR-CONDITIONER IS RUNNING
• The common wire on the thermostat transformer
(black) needs to be wired with the yellow wire from the
dehumidifier.
motorized damper in series with these connections, or the
white wire must not be connected to the control. Mis-wiring
may result in transformer damage.
After connections have been verified, this short test will
confirm proper wiring.
• The Red wire on the thermostat needs to be wired with
the Yellow wire from the dehumidifier.
1. Install front cover of control; insert at top first, then bottom.
2. Plug in Ultra-Aire base unit. The control should power up.
3. Turn control on by pressing the ON/OFF button.
• The Yellow wire from the thermostat must be wired to the
AC off sensor terminal.
4. Engage dehumidification operation by adjusting RH
setpoint below ambient conditions.
DEHUMIDIFIER
a. Press RH until RH setpoint is 20%.
BLACK
b. Verify Ultra-Aire fan and compressor operation.
c. Verify ventilation damper (if used) is closed.
YELLOW
RED
AIR CONDITIONER
TRANSFORMER
THERMOSTAT
5. Verify fan only operation by disengaging dehumidification and
operating fan:
YELLOW
a. Adjust RH setpoint above ambient conditions by pressing and
holding RH until set point is 80%.
DEHUMIDIFIER ACTIVATES WHEN THE
AIR-CONDITIONER IS RUNNING
b. Press fan button, then press again to toggle fan to “ON”
setting.
• The common wire on the thermostat transformer
(black) needs to be wired with the yellow wire from the
dehumidifier.
c. Release fan button, then press again to toggle fan to “ON”
setting until “FAN” flashes on display.
d. Verify fan operation of Ultra-Aire. No compressor operation
should be noted, and ventilation damper (if used) should be
closed.
• The Red wire on the thermostat needs to be wired with
the Yellow wire from the dehumidifier.
6. Verify ventilation damper operation (if installed) by disengaging
from operation and engaging ventilating operation.
• The Yellow wire from the thermostat must be wired to the
AC on sensor terminal.
a. Press and hold fan button until “FAN” flashes on display.
b. Release “FAN” button, then press again to toggle fan
DEHUMIDIFIER
operation off.
BLACK
YELLOW
c.Press and hold “VENT” button until“VENT” flasheson display.
RED
d. Release “VENT” button, then press again until “OPEN” is
AIR CONDITIONER
TRANSFORMER
displayed.
YELLOW
THERMOSTAT
e. Verify Ultra-Aire fan operation and ventilation damper is open,
with no compressor operation.
7. If any functions are not working properly, verify wiring and
connections. Meters may be used across terminals to verify voltage.
If there is a concern about the base unit not operating properly, the
leads exiting the base unit may be connected and operation verified
according to the following matrix:
5.2E Location
Install the remote control panel in a central area of the
structure where it will sense the relative humidity of the
structure accurately. Do not install the control panel where it
may not accurately sense the relative humidity such as near
HVAC supply registers, near exterior doors and windows, or
near a pool or spa.
Wire connections
Yellow & Blue
Operation
Fan & Compressor
Fan Only
Yellow & Green
5.2F Testing
Do not test any other connections or transformer damage
may result. Refer to the appropriate Ultra-Aire base unit
manual for additional information.
After wiring connections have been made, verify connections.
First, make sure the white wire from the base unit is not
wired directly to the DEH 3000 control. There must be a
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8. Verify additional optional control operations such as fan interlock
or lockout.
9. Proceed to operation/setting section.
FOR INSTALLER & HOMEOWNER:
5.3 Operation
5.3A Display
• When there is power to the control, the control display will
show the time, day, humidity, and temperature.
• When the control is turned on, the setpoint, fan status,
auto/hold mode, and fresh air vent status is displayed.
• When a key is pressed the display will light.
• The “TIME” and “DAY” is displayed at the top of
the screen.
• RH and Temperature are displayed in real time.
• An “
is operating the device.
• A flashing “ ” before the set point, vent, or fan indicates
O” before the set point, vent, or fan indicates the unit
O
5.3D Setting Clock Time
the unit is in a delay prior to operating the device.
1. Press and hold the “CLOCK” button. The hour display
will flash. Release the button.
Note: Delay is an intentional factory installed time delay
cycle that is meant to prevent short cycles, extending the
life of the Ultra-Aire. If a delay is encountered, WAIT 10
MINUTES BEFORE EXPECTING NORMAL OPERATION.
2. Use the “UP/DOWN RH” buttons to change the value.
3. Press the “CLOCK” button again and the minute display
will flash. Use the RH buttons to change the value.
4. Press the “CLOCK” button again and the “AM/PM” display
will flash. Use the RH buttons to toggle the value.
5. Press the “CLOCK” button again and the day display will
flash. Use the “RH” buttons to change the value.
5.3B Setting
During the set-up process, if you make a mistake, simply
continue. You can always go back to adjust the settings. If
you leave the control alone and don’t touch any buttons for
10 seconds, the control will remember any changes made
and return to “home.”
If the “CLOCK” button is pressed again or no button is
pressed for 5 seconds, the display will automatically return to
“home.”
5.3C On/Off Setting
Press the “ON/OFF” button to turn the system on or off.
When the system is on, the setpoint, fan status, auto/hold
mode, and fresh air vent status is displayed. In the off
mode, the control will show the time, day, humidity, and
temperature. When the unit is shipped, it is in manual mode.
5.3E Setting Relative Humidity Setpoint
The relative humidity setpoint (the average RH that is
maintained) operates the dehumidifier function of the Ultra-
Aire. It has no effect on any other function of the unit. The
control senses the ambient relative humidity of the space in
which it is located.
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Operation
continuously are filtration and air recirculation.
The initial dead band setting (the range that the dehumidifier
cycles on and off) is 3%. With a setpoint of 50%, the dumidifier
turns on when the reading reaches 53%. The dehumidifier
continues to remove water from the air until the reading is
47%. The dehumidifier remains off until the reading is 53%.
“AUTO” – indicates the fan will run when the control calls for
dehumidification or ventilation. If the control has not called for
dehumidification for 3 hours, the control will automatically run
the fan for 10 minutes. The fan must run a specific amount of
time per day. This helps to keep the dehumidifier dry.
AMBIENT RH
After dehumidification cycle, fan automatically shuts off for 10
minutes.`
To set the operation:
1. Press and hold the “FAN” button. The current fan setting
will begin to flash. Release the button.
2. Press the “FAN” button to toggle between the “ON” and
“AUTO” modes.
CURRENT SETPOINT
If the setpoint is equal to or greater than the current ambient
condition, the space does not need to be dried so the
dehumidifier function will be off.
Example: Setpoint: 50% RH
Current condition: 45% RH = Dehumidifier off, the “
O”
indicator will not be shown.
FAN MODE
(Auto or On)
If the setpoint is less than the ambient condition, the
dehumidifier will be on and the red “DEHU” indicator will be
lit. Since the space is more humid than the set point, the
controller operates the dehumidifier to dry the space.
An “
” indicator indicates the fan is in a wait mode and will
operate shortly. No “ ” indicates the fan is off.
O” indicator indicates the fan is operating. A flashing
“O
O
Example: Setpoint: 50% RH
Current condition: 55% RH = Dehumidifier on, the “
indicator will be shown.
With the fan in the “AUTO” mode, the fan will operate only
when needed by other functions of the system. The fan
will remain off unless the system is dehumidifying and/or
ventilating. The fan always runs during dehumidification and
ventilation and the fan “O” icon will be lit. To completely turn
the system off, use the “ON/OFF” button as described earlier.
O”
To set the relative humidity setpoint, press up or down “RH”
buttons to adjust the relative humidity setpoint as desired.
Therma-Stor recommends relative humidity levels not exceed
50% in the summer, and 25-35% in the winter if you live
in a cold climate. It is not recommended that the humidity
setpoint be set below 35%. In order to dry the home in the
winter in a cold climate, use the ventilation function of the
system rather than the dehumidifier function. Call the factory
or refer to the owner’s manual for more information.
To adjust the ventilation mode see Section 3.7.
5.3G Damper Operation and Setting (Ventilation)
Manual/Hold Mode
Ultra-Aire units can be installed to incorporate optional ventilation.
The damper setting controls the ventilation function of the system.
It has no control over the dehumidification function, although
the ventilation function can and should be used to dry the space
depending on the climate and the outside air conditions. Refer to
the appropriate Ultra-Aire manual for more information.
5.3F Fan Setting and Operation
Use the “FAN” button to adjust the fan operation. There are
2 choices for fan operation: “ON” or “AUTO.”
“ON” – indicates the fan of the Ultra-Aire will run
In order to provide ventilation, the damper must be open (“ON”)
and the fan must be running.The controller takes care of these
two functions automatically, so that whenever the damper is open
(“ON”), the fan is running.
continuously. This does not affect either the dehumidification
or ventilation functions of the system. In other words, the
system may or may not be ventilating or dehumidifying while
the fan is running. Common reasons for operating the fan
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There are two programs available for ventilation Monday
through Friday. There are also two programs for Saturday and
Sunday. No other choice of days is available.
The ventilation indicator “
is ventilating.The fan operation indicator “
O
” will be displayed whenever the unit
O”will also be lit.
There are three damper operation modes, “OPEN –HOLD,”
“CLOSED – HOLD” and “PROGRAM” (denoted by “ON TIME”
– “OFF TIME.” Refer to section 3.8).With the damper in the
“OPEN –HOLD” mode, the damper will be open and the fan of
the system will be operating in order to introduce fresh air into
the space. Use this mode for continuous fresh air ventilation.The
fan is always on when the damper is open.When in “CLOSED
– HOLD” mode, the damper will not open and the system will not
ventilate.
Each program has:
• A “START” time of day when the ventilation schedule
begins.
• An “OPEN FOR” duration for the amount of time the
damper stays open in 5 minute intervals, from 0 to 60.
• A “CLOSED FOR” duration which closes the vent for a
specified time in 5 minute intervals from 0 to 60.
Example:
1. Press “PROGRAM ENTER” button. The following menu
When in the“program”mode, the control will operate the damper
and fan (ventilate) according to the programmed ventilation
schedule (See Section 3.8).
appears:
To set the damper operation:
1. Press the “VENT” button.The current setting will begin to
flash on the display. Release the button.
2. Press the “VENT” button again to toggle between “OPEN,”
“CLOSED” and “PROGRAM.”
3. Leave the control alone for 10 seconds to select the indicated
damper mode and return to “HOME.”
2. Using the up/down RH buttons, select “PROGRAM.” The
following menu appears:
5.3H Intermittent or Programmed Ventilation
You can select from:
This example shows the damper in “PROGRAM” mode
(denoted by the schedule 15 minutes on, 5 minutes off).
“MON-FRI”or “SAT-SUN” for separate weekday/weekend
schedules or “MON-SUN”which gives you equal weekday/
weekend schedules.
Menu when you select “MON-FRI” or “SAT-SUN”:
The status of the damper is show here.
is open, blank is closed.
The system will operate the ventilation function according to the
current ventilation program.The control needs to be programmed
to turn the ventilation function on and off at the desired intervals.
This is done by programming the ventilation timer.
1. Enter the starting time for weekdays using the up/down
RH keys to change the time.
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2. Press the program enter key to toggle to the “open for”
setting. Using the up/down “RH” keys, change the
duration that the damper will ventilate fresh air.
feature will not need to be used. If temperature cutout is desired,
program the setpoint by pressing the “PROGRAM ENTER”
button. Press RH until “TEMP CUTOUT” is flashing. Use “RH”
up or “RH” down to adjust setpoints.
3. Press the program enter key to toggle to the “closed
for” setting. Using the up/down “RH” keys, change the
duration that the damper will remain closed between
ventilation.
5.3J Default Settings
Upon initial power-up or after prolonged power outages (more
than 30 minutes), the DEH 3000 is programmed with the
following defaults.A space is provided to make note of user
inputs.
For the example given, starting at 8:00AM in the morning,
the control will ventilate fresh air for 15 minutes then stop for
15 minutes. This schedule of 15 minutes open; 15 minutes
closed will continue until the start time of the night schedule.
Setting
Default
My Setting
Press “PROGRAM ENTER” again to go to the “MON-FRI”
night schedule. Repeat the steps listed above for this and the
“SAT-SUN” day and night schedules.
RH setpoint
50%
__________
__________
__________
__________
Ventilation Operation
Fan Setting
Closed
Auto
80%
When you return to the main program menu, use the
up/down “RH” buttons to select “RUN PROGRAM.”
Temp Cutout
If you have questions about the
DEH 3000, please call Therma-Stor LLC
at 1-800-533-7533 or email us at
Press “PROGRAM ENTER” to run the program. The
display will appear as follows:
Vent schedule
Program
on time/off time
RUN mode
5.3I Temperature Cutout Programming
Ultra-Aire units produce heat when dehumidifying. Depending
on outside conditions, the ventilation function may introduce
warm air into the space. Occasionally, the operation of the
Ultra-Aire may produce enough heat to drive temperatures up.
The temperature cutout feature disables all Ultra-Aire operations
if temperatures reach cutout setpoint. In most installations this
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6. Maintenance
7. Service
6.1 Standard Air Filter
CAUTION: Servicing the Ultra-Aire 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.
The Ultra-Aire is equipped with a pleated cloth air filter. This filter
should be checked monthly. Operating the unit with a dirty filter
will reduce dehumidifier capacity and efficiency and may cause the
compressor to cycle off and on unnecessarily on the defrost control.
To access the air filter, remove a filter access panel from one end
of the Ultra-Aire. To remove the filter access panel from the Ultra-
Aire, pull the panel straight up about 1⁄2" until the bolt heads near
the bottom of the panel are centered in the larger opening of the
keyhole slots. Next rock the bottom of the access panel away from
the Ultra-Aire and lift the access panel straight up to remove the
tab on top of the panel from the slot in the top of the Ultra-Aire.
The filter should be readily visible and can be removed by pulling it
straight out of the Ultra-Aire.
7.1 Warranty
A warranty certificate has been enclosed with this unit; read
it before any repair is initiated. If a warranty repair is required,
call the factory first at 1-800-533-7533 for warranty claim
authorization and technical assistance.
7.2 Technical Description
The Ultra-Aire 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 (See Figure 3).
The pleated cloth filter can generally be vacuumed clean several
times before needing replacement. Replacement filters can be
ordered from the factory or purchased locally if available. DO NOT
operate the unit without the standard filter or with a less effective
filter than the standard filter; the heat exchange coils inside the unit
could become clogged and require disassembly to clean.
Hot, high pressure refrigerant gas is routed from the compressor
to the condenser coil (See Figure 3). 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.
6.2 High Efficiency Air Filter
An optional high efficiency pleated microglass paper filter is
available for the Ultra-Aire. This filter is rated as 90%-95% efficient
by the ASHRAE Dust Spot test method 52-76. The high efficiency
pleated microglass paper filter should be used in conjunction with
the standard filter, and placed directly beneath the standard filter.
This filter is able to remove allergy causing particles from the
airstream. The high efficiency filter has a much larger surface area
than the standard filter, thus the standard filter may need to be
cleaned or replaced several times before the high efficiency filter
requires replacement. Be careful not to damage the fabric media
when handling the high efficiency pleated paper filter. Do not
attempt to clean the high efficiency pleated paper filter. It should be
replaced when it becomes restrictive (See Figure 7).
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.
6.3 Fan Oiling
7.3 Troubleshooting
The fan motor is factory lubricated for many years of normal
operation, however, periodic oiling will extend motor bearing life. To
oil, remove the plastic cap from the two oiling tubes extending from
the unit above the nameplate. Locate the oil ports on the motor as
indicated in Figure 6. Add 3 to 5 drops of SAE 20 nondetergent oil
to each port every 6 months. DO NOT use thinner oil or penetrating
oil; fan life can actually be decreased by such oil.
No dehumidification, neither fan nor compressor run with fan
switch and ventilation timer OFF.
1. Unit unplugged or no power to outlet.
2. Humidity control set too high or defective (Sec. 3.3 & 5.7A)
3. Loose connection in internal or control wiring.
4. Defective Compressor relay.
5. Defective control transformer.
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No dehumidification, compressor does not run but fan runs
with fan switch and ventilation timer OFF and humidity control
turned to ON.
left in the system, it must be recovered before weighing in the new
charge. Refer to the unit nameplate for the correct charge weight
and refrigerant type.
1.Defective compressor run capacitor (Sec. 5.6).
2.Loose connection in compressor circuit (See Fig. 4).
3.Defective compressor overload (Sec. 5.6A).
4.Defective compressor (Sec. 5.6).
7.5 Fan Replacement
The centrifugal fan has a PSC motor and internal thermal overload
protection. If defective, the complete assembly must be replaced.
1.Unplug the power cord.
5.Defrost thermostat open (Sec. 5.8).
2.If an outlet duct is connected to the unit, remove it.
3.Remove the cabinet side.
4.Remove the 3 screws attaching the electrical box
located in front of the fan to the base.
5.Disconnect the fan leads. Black from the fan relay and white
from the run capacitor.
6.Pull the oil tubes out of the fan motor.
7.Remove the nuts & bolts holding the fan outlet flange to the
cabinet end and remove the fan.
8.Reassemble the new fan by reversing the above procedure.
Fan runs with fan switch and ventilation timer OFF, but
compressor cycles on & off.
1.Low ambient temperature and/or humidity causing unit to
cycle through defrost mode.
2.Defective compressor overload (Sec. 5.6A).
3.Defective compressor (Sec. 5.6).
4.Defrost thermostat defective (Sec. 5.8).
5.Dirty air filter(s) or air flow restricted.
Fan does not run with fan switch in either position. Fan does
not run with ventilation timer activated. Compressor runs
briefly but cycles on & off with humidity control turned to ON.
1.Loose connection in fan circuit (See Fig. 4).
2.Obstruction prevents fan impeller rotation.
3.Defective fan.
7.6 Compressor/Capacitor Replacement
This compressor is equipped with a two terminal external overload
and a run capacitor, but no start capacitor or relay (See Figure 4).
CAUTION-ELECTRICAL SHOCK HAZARD:
Electrical power must be present to perform
some tests. These tests should be performed
by a qualified service person.
4.Defective fan relay.
Fan runs with fan switch ON. Fan does not run with ventilation
timer activated.
7.6A Checking Compressor Motor Circuits
1.Defective ventilation timer.
Perform the following tests if the fan runs but the compressor does
not with the fan switch OFF and the humidity control ON.
2.Time not correct on ventilation timer.
3.Ventilation timer set to manual & switched OFF.
1.Unplug the unit, remove the cabinet side and the electrical
connection cover on the compressor top.
Evaporator coil frosted continuously, low dehumidifying
capacity.
2. Plug in the unit and turn the humidity control to ON. Check for
110 volts from compressor terminal R to overload terminal
3 using an AC voltmeter. If voltage is present, go to step
3. If no voltage, there may be a loose connection in the
compressor circuit. Test each component for continuity. See
the appropriate section if a defect is suspected.
3. Unplug the unit, then disconnect the red and yellow wires
from compressor terminals R & S. Using an ohmmeter, check
continuity between the points listed below.
1.Defrost thermostat loose or defective (Sec. 5.8).
2.Low refrigerant charge
3.Dirty air filter(s) or air flow restricted.
4.Excessively restrictive ducting connected to unit.
Unit not providing ventilation. Ventilation timer notoperating
correctly.
1.If timer is not functioning correctly, reset timer and reprogram
(Sec. 3.5)
2.Check control wire connections (check connections at
damper also)
4. Compressor terminals C and S:
No continuity indicates an open start winding. The
compressor must be replaced. Normal start winding
resistance is 3 to 7 ohms.
3.Defective fresh air damper (Sec. 5.9)
5. Compressor terminals C and R:
7.4 Refrigerant Charging
If the refrigerant charge is lost due to service or a leak, a new
charge must be accurately weighed in. If any of the old charge is
No continuity indicates an open run winding. The compressor
must be replaced. Normal run winding resistance is .5 to 2
ohms.
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6. Compressor terminal C and overload terminal 1:
No continuity indicates a defective overload lead.
7. Overload terminals 1 and 3:
If there is no continuity, the overload may be tripped. Wait
10 minutes and try again. If there is still no continuity, it is
defective and must be replaced.
8. Compressor terminal C and compressor case: Continuity
indicates a grounded motor. The compressor must be
replaced.
9. Disconnect the wires from the run capacitor. Set the
ohmmeter to the Rx1 scale. The capacitor is shorted and
must be replaced if continuity exists across its terminals.
If there is no needle movement with the meter set on the
Rx100000 scale, the capacitor is open and must be replaced.
10. Reconnect the wires to the compressor and capacitor. Plug
in and turn on the unit. If the compressor fails to start, replace
the run capacitor.
11. If the unit still does not start, adding a hard-start kit (relay &
capacitor) will provide greater starting torque. If this doesn't
work, the compressor has an internal mechanical defect and
must be replaced.
was not rotating. Contaminants are therefore largely confined
to the compressor housing. A single installation of liquid and
suction line filter/driers will probably clean up the system. If
sludge is evident in the discharge line, it will likely be found in
the suction line. This indicates the compressor burned out will
running. Sludge and acid have been pumped throughout the
system. Several changes of the liquid and suction filter/driers
will probably be necessary to cleanse the system.
5. Correct the system fault that caused the burn out. Consult the
factory for advice.
6. Install the replacement compressor with a new capacitor and
an oversized liquid line filter. In a running burn out, install an
oversized suction line filter/drier between the accumulator and
compressor. Thoroughly flush the accumulator 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
accurate vacuum gauge. Leave the pump on the system for
at least an hour.
8. Operate the system for a short period of time, monitoring the
suction pressure to determine that the suction filter is not
becoming plugged. Replace the suction filter/drier if pressure
drop occurs. If a severe running burn out has occurred, several
filter/driers may have to be replaced to remove all of the acid
and moisture.
7.6B Replacing a Burned Out Compressor
The refrigerant and oil mixture in a compressor is chemically
very stable under normal operating conditions. However, when an
electrical short occurs in the compressor motor, the resulting high
temperature arc causes a portion of the refrigerant oil mixture to
break down into carbonaceous sludge, a very corrosive acid, and
water. These contaminants must be carefully removed otherwise
even small residues will attack replacement compressor motors and
cause failures.
NOTE: NEVER use the compressor to evacuate
the system or any part of it.
The following procedure is effective only if the system is monitored after
replacing the compressor to insure that the clean up was complete.
7.6C Replacing a Compressor, Nonburn Out
Remove the refrigerant from the system. Replace the compressor
and liquid line filter/drier. Charge the system to 50 PSIG and check
for leaks. Remove the charge and weigh in the refrigerant quantity
listed on the nameplate. Operate the system to verify performance.
1. This procedure assumes that the previously listed compressor
motor circuit tests revealed a shorted or open winding. If so,
cautiously smell the refrigerant from the compressor service
port for the acid odor of a burn out. WARNING:The gas could be
toxic and highly acidic. If no acid odor is present, skip down to
the section on changing a non-burn out compressor.
7.7 Remote Controls
The Ultra-Aire is controlled by devices mounted on a panel that is
remote from the unit. You may or may not have the devices listed
below depending on the model of the remote control panel that
you purchased. If the Ultra-Aire fails to operate as desired, always
check the settings of the controls to insure that they are correct.
Check that the controls are receiving 24Vac from the Ultra-Aire.
Check the connections between the Ultra-Aire, the control panel,
and the field control wiring.
2. Remove and properly dispose of the system charge. DO NOT
vent the refrigerant indoors or allow it to contact your eyes
or skin.
3. Remove the burned out compressor. Use rubber gloves if there
is any possibility of contacting the oil or sludge.
4. To facilitate subsequent steps, determine the type of burn out
that occurred. If the discharge line shows no evidence of sludge
and the suction line is also clean or perhaps has some light
carbon deposits, the burn out occurred while the compressor
7.7A Humidity Control
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
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FOR HVAC INSTALLER AND HOMEOWNER
point. It opens when the RH drops 4 to 6% below the set point. If the
Ultra-Aire does not run, try turning the humidity control clockwise
until it reaches the stop and the knob pointer points at “ON”.
7.9 Electric Ventilation Damper
The electric ventilation damper is controlled by the ventilation timer.
The damper will open when the ventilation timer is activated to
allow fresh air into the structure through the 6" diameter fresh air
inlet duct. The electric ventilation damper will remain closed when
the ventilation timer is not activated to prevent over-ventilating the
structure when the unit is dehumidifying or recirculating the indoor
air.
The Ultra-Aire is equipped with a automatic defrost mechanism.
If the Ultra-Aire operates in conditions that develop frost on the
evaporator, it will sense the frost build-up and automatically defrost
the evaporator. The Ultra-Aire may not appear to be operating
correctly during the defrost sequence, but once the defrost is
completed, the Ultra-Aire will resume dehumidifying.
The electric ventilation timer operates on 24 Vac from the control
circuit. DO NOT connect high voltage to the damper motor or
damage to the motor may result. DO NOT force the blade of the
damper by hand or damage to the damper motor may result.
7.7B Programmable Ventilation Timer
The ventilation timer controls the fan and the motorized fresh
air damper. When the ventilation timer is activated, the central
conditioning unit will circulate the indoor air, and bring in fresh air
from outside. The ventilation timer should be set for the required
ventilation of the residence. The home should be ventilated with
fresh air whenever it is occupied. If the Ultra-Aire fails to ventilate
as expected, check that the time on the timer is correct. For the
timer to carry out the program schedule, the slide switch in the
upper left corner on the timer must be set to “AUTO”. The slide
switch in the upper right corner of the Ultra-Aire must be set to
“RUN”. Also check the programs on the timer to be sure that the
timer is calling for ventilation at the correct times. If the timer fails
to operate or operates erratically, reset the timer; see section 3.5 of
this manual.
The damper opens in one direction only. The damper rotates very
slowly, allow sufficient time for the damper to cycle. The damper
will take approximately 1 minute to cycle from closed to open or
from open to closed.
If the electric ventilation damper fails to operate:
1. Check that the wiring 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.
7.8 Defrost Thermostat
The defrost thermostat is attached to the refrigerant suction tube
between the accumulator and the 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 fan 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.
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ULTRA-AIR 100V ELECTRICAL SCHEMATIC
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ULTRA-AIRE 100V PICTORIAL ELECTRICAL DIAGRAM
OPTIONAL
DAMPER
DEFROST
THERMOSTAT
COMPRESSOR
1
C
HUMIDITY
CONTROL
3
R
S
D.BLU-5
YEL-2
BLK
BLOWER
SWITCH
VIO-4
ORG
AUTO
YEL
BRN-6
L.BLU
CAPACITOR
2
ON
3
WHT
6
7 8
PNK
1
2
RED-3
RED
BLOWER
RELAY
BRN-6
ORG-1
RED-3
YEL-2
D.BLU-5
WHT
TIMER
BRN-6
ORG-1
RED-3
YEL-2
3
GRY
5
GRY
D.BLU-5
BLK
BLK
BLK
RED
BLU
GRN
STRAIN
BLK
PNK
RELEIF
BUSHINGS
YEL
BLOWER
0
4
6
VIO
YEL
1
TRANSFORMER
MOLDED 115V
PLUG W. GROUND
COMPRESSOR
RELAY
HUMIDITY
CONTROL
D.BLU-5
YEL-2
BLOWER
SWITCH
AUTO
BRN-6
PNK
SAME AS ABOVE
ON
BRN-6
ORG-1
RED-3
YEL-2
D.BLU-5
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ULTRA-AIRE 100V SERVICE PARTS LIST
Item Part No.
1
QTY.
1
Description
Accumulator
4022254
4021475
4022037
4021395
4021589
4023875
4023928
4020623
4022147
4022144
4021396
4022445
4025087
4021626
4022484
4020924
4024666
4021470
4021648
4022487
4021471
4022444
4022442
2
1
Air Filter, Pleated Cloth
3
1
Fan (Blower) w/ Capacitor (Fasco 7090-1874)
Evaporator Coil
4
1
5
2
Capillary Tubes, .050" ID x .114 OD x 28" long
Collar, Inlet, 8" Galvanized Steel
Collar, Inlet, 6" Galvanized Steel with Damper
Collar, Outlet, 8" White (for outlet only)
Compressor, Panasonic (2R12S3R126A-6A)
Compressor Overload (TI # MRA98706-673) (not shown)
Condenser Coil
6
1
7
1
8
1
9
1
10
11
12
13
14
15
16
17
18
1
1
1
Cord & Wire Harness
1
Filter/Drier
1
Hose, Drain Pan, .56" ID x 8'
Relay, SPST, 24 Vac, 30A
1
1
Relay, SPDT, 24 Vac, 15A
1
Run Capacitor for Compressor, 35 MFD, 440v
Thermostat, Defrost
1
1
Thermostat Clip, Defrost (item 18) (not shown)
Transformer, 120/24 Vac, 40 VA
Wheel, 2", Plastic
19
20
21
22
1
4
1
Wire Harness, Low Voltage
1
Wiring Diagram (on Cover) (not shown)
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ULTRA-AIRE 100V OPTIONAL PARTS LIST
Item Part No.
QTY.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Description
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
4022489
4022220
4024155
4024125
4023660
4023672
4024153
4021495
4024150
4024122
4025560
4022486
4022443
4022474
4023647
4022474
Air Filter, High Efficiency, Pleated Microglass Paper, 90%-95%
Condensate Pump Kit
Control Panel Assembly, Humidity/Fan
Control Panel Assembly, Ventilation Timer & Humidity
Controller, Humidity
Damper, Duct, 6" Diameter, Electrically Actuated (not shown)
Cover for Items 28 & 29 (not shown)
Knob, Black, .25" shaft
Instructions, Humidity/Fan (not shown)
Instructions, Ventilation Timer & Humidity (not shown)
Switch, Black, SPDT, ON/OFF
Timer, 7-Day, 24 Vac, Programmable
Wire Harness, Ventilation Timer & Humidity (not shown)
Wire Harness, Humidity/Fan (not shown)
Damper, Check, 8" Diameter (not shown)
External Insulation Kit (Optional-not shown)
26
28
30
36
33
27
29
30
36
33
37
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ULTRA-AIRE 100V EXTERNAL INSULATION KIT
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ULTRA-AIRE 100V CONTROL PANEL INSTALLATION
1. The following installation instructions are for both new
construction and retrofit applications. For new construction, it is
recommended that the control box be installed after the drywall is
in. Prior to drywall installation, the control wires can be positioned
to come through the drywall about 5' 2" above the floor and at
least 3" left or right of any stud.
5. Place the two 3⁄4" long, #8 screws through the tab slots and into
the holes in the box sides.
6. Tighten the screws until the tab ears press firmly against the
drywall back, causing the upper and lower box flanges to press
tightly against the drywall front.
7. Connect the control wires to the control panel leads per the
installation sheet taped to the Ultra-Aire side or per the manual.
2. Locate the box bottom about 5' above the floor. Locate the left
and right box sides at least 2" from any stud. Use the back of the
control box as a template to make the rectangular drywall cutout
(5-13/16" wide by 4-1/16" high). DO NOT oversize the cutout,
especially the height.
8. Fasten the control panel to the box flanges with the 1⁄2" long, #6
screws provided.
9. Slide the cover over the control panel screw head at the panel top
so it catches in the keyhole on the back of the cover (see detail
below). The cover hides the control panel when it is not being
programmed.
3. Feed the low voltage control wires into the box back through the
rubber grommet.
4. Place the box in the hole and put the mounting tabs through the
slots in the box sides as shown.
10. The sheet under the cover glass can be replaced with artwork of
the customers’ choice.
STUDS
HOOK COVER KEYHOLE
CONTROL
WIRES
SLOT OVER SCREW HEAD
STUD
#8 SCREW
2" MINIMUM
4 1/16"
5 13/16"
MOUNTING
TAB
#6 SCREW
COVER
5'
KEYHOLE SLOT
TOP VIEW OF INSTALLED
BOX AND CONTROL PANEL
FLOOR
CUT-OUT DETAIL
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ULTRA-AIRE 100V Dehumidifier Limited Warranty
LIMITATIONS AND EXCLUSIONS: 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. This excludes charges incurred installing and
removing the Ultra-Aire 100V for repair.
WARRANTOR:
Therma-Stor LLC
PO Box 8680
Madison, WI 53708
Telephone: 1-800-533-7533
WHO IS COVERED: This warranty covers the Ultra-Aire
100V and extends only to the original residential end-
user of the Ultra-Aire 100V Dehumidifier, and may not
be assigned or transferred.
If any Ultra-Aire 100V part is repaired or replaced, the
new part shall be warranted for the balance of original
warranty (but all warranty periods will be extended by
the period of time, if any, that the Ultra-Aire 100V is out
of service while awaiting covered warranty service).
Year One - 100% parts and labor (all components).
Therma-Stor LLC warrants that, for one (1) year
the Ultra-Aire 100V 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. This
excludes charges incurred installing and removing
the Ultra-Aire 100V for repair.
Warranty service will be performed during normal
working hours.
UPON THE EXPIRATION OF THE WRITTEN WARRANTY
APPLICABLE TO THE ULTRA-AIRE 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 ULTRA-AIRE
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.
Year(s) Two through Five - Therma-Stor LLC
further warrants for a period of five (5) years, the
condenser, evaporator, and compressor of the
Ultra-Aire 100V 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). This excludes charges incurred installing and
removing the Ultra-Aire 100V for repair.
USER RESPONSIBILITIES: Warranty service must be
performed by a servicer authorized by Therma-Stor
LLC. To obtain warranty service you must obtain a
return material authorization (RMA). To obtain an RMA
you must present proof of purchase or (lease), by
use of a warranty card, original sales receipt or other
reasonable and reliable means.
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.
To obtain an RMA call Therma-Stor LLC at the above
number and ask for the Therma-Stor LLC Service
Department, which will then issue an RMA# and
arrange for, at our option, either repair or replacement.
FREIGHT: Freight to and from the servicer is the
responsibility of the end-user. The end-user is
responsible for normal care and proper return
packaging.
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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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. © 2006 Therma-Stor LLC. All rights reserved.
PO Box 8680 • Madison, WI 53708
Phone: 608-222-5301 • Fax: 608-222-1447
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