Therma-Stor Ultra Aire 90H Installer's & Owner's Manual
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Therma-Stor Ultra Aire 90H Installer's & Owner's Manual

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INSTALLER'S & OWNER'S MANUAL
HVAC INSTALLER: PLEASE LEAVE MANUAL FOR HOMEOWNER
P/N 4025700 • Serial No.___________________________
The Ultra-Aire 90H dehumidifier performs multiple functions in
a compact enclosure; high-capacity dehumidification, fresh air
ventilation, and particulate filtration.
Dehumidification
The highly efficient UA-90H 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 increased 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 from the
incoming air.
For small usage:
Fresh Air Ventilation (optional)
Fresh air may be ducted to the unit and regulated by a variety of
controls in order to provide desired ventilation rates.
Air Filtration
The UA-90H includes particulate filtration to improve the indoor
air quality of your living/working space. MERV-11 media filter is
standard.
P.O. Box 8680 Madison, WI 53708
TOLL-FREE 1-800-533-7533
•
www.thermastor.com
sales@thermastor.com
•
•
© 2007 Therma-Stor LLC • Manual P/N TS-325, 11/07

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Summary of Contents for Therma-Stor Ultra Aire 90H

  • Page 1: Introduction

    INSTALLER’S & OWNER’S MANUAL HVAC INSTALLER: PLEASE LEAVE MANUAL FOR HOMEOWNER P/N 4025700 • Serial No.___________________________ Fresh Air Ventilation (optional) The Ultra-Aire 90H dehumidifier performs multiple functions in a compact enclosure; high-capacity dehumidification, fresh air Fresh air may be ducted to the unit and regulated by a variety of ventilation, and particulate filtration.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Introduction ................1 4.9A Setting the Time ............9 Features & Benefits ..............1 4.9B Ventilation Schedule ..........9 Safety Precautions ..............3 4.9C Automatic or Manual Mode ........9 1. Intended Application ............4 5. DEH 3000 Digital Control ...........10 2. Registrations ...............4 5.1.

  • Page 3: 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 90H indoor air quality system. READ AND SAVE THESE INSTRUCTIONS •...

  • Page 4: Intended Application

    FOR HVAC INSTALLER ONLY 1. Intended Application for Ultra-Aire 90H 4.1C Low Voltage Wiring Unit location should be in an area where field wiring the remote For the ideal installation, draw air from the central part of the home controls (low voltage) to the unit will be possible. and return it to isolated areas of the home like the bedrooms, den, utility room, or family room.

  • Page 5: Condensate Removal

    FOR HVAC INSTALLER ONLY remote location when the water level in the pump’s reservoir rises IMPORTANT to close the float switch. The pump also contains a safety float switch. The white leads from this switch extend from beneath the Do not install the control panel where it may not accurately pump cover.

  • Page 6: B Ducting For Fresh Air - Option

    FOR HVAC INSTALLER ONLY Isolated Areas: Effective dehumidification may require that ducting In cold climates or areas where the outdoor dew point is low at be branched to isolated, stagnant air flow areas. Use 8" or larger times, ventilation can be used to dehumidify the structure, making diameter branch ducting to each of two or three areas, use 6"...

  • Page 7: D Installation In An Attic

    FOR HVAC INSTALLER ONLY 4.4E Installation in a Structure with No Existing Forced Crawlspace Installation: Install a separate return for the UA-90H in a central area of the structure. Optional: Duct the supply of the Air HVAC System UA-90H to a 10" x 10" x 10" tee/damper that is 20% open to When installing the UA-90H in a structure that does not have a the crawlspace if desired.

  • Page 8: A Humidity/Fan Control Panel Without Fresh Air Ventilation Or Damper

    FOR HVAC INSTALLER AND HOMEOWNER To determine how each control operates the UA-90H, it must When the fan/filter switch is in the “ON” position, the motorized first be determined which control is being used and whether damper will open and the fan will run, introducing outside air. The or not the 90H is ducted for fresh air ventilation.

  • Page 9: Ventilation Timer

    FOR HVAC INSTALLER AND HOMEOWNER 4.9 Ventilation Timer 4.9B Ventilation Schedule The ventilation timer controls the fan and the motorized fresh Slide the switch in the upper right hand corner to the program air damper. When the ventilation timer is activated, the UA-90H symbol P.

  • Page 10: Deh 3000 Digital Control

    FOR HVAC INSTALLER ONLY 5. DEH 3000 Digital Control 8. Test connections (see Section 2.6) Installation Instructions Control Part No. 4026570 5.1 Specifications Part # (P/N) 4026570 Model: DEH 3000 Digital Control Electrical: 24 VAC Humidity Range: 10 – 95% RH Humidity Accuracy: +/- 5% Output:...

  • Page 11: C Auxillary Relay Operation

    FOR HVAC INSTALLER ONLY Engage the A/C central fan during dehumidification 1. Disconnect the green wire that runs to the fan relay from the screw on the thermostat. 2. Connect the green wire that runs to the fan relay to the COM screw on the DEH3000 board.

  • Page 12: E Location

    FOR HVAC INSTALLER ONLY DEHUMIDIFIER DEACTIVATES WHEN THE After connections have been verified, this short test will AIR-CONDITIONER IS RUNNING confirm proper wiring. 1. Install front cover of control; insert at top first, then bottom. • The common wire on the thermostat transformer (black) needs to be wired with the yellow wire from the 2.

  • Page 13: Operation

    FOR HVAC INSTALLER AND HOMEOWNER 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.

  • Page 14: F Fan Setting & Operation

    FOR HVAC INSTALLER ONLY AND HOMEOWNER Operation continuously are filtration and air recirculation. The initial dead band setting (the range that the dehumidifier “AUTO” – indicates the fan will run when the control calls for cycles on and off) is 3%. With a setpoint of 50%, the dumidifier dehumidification or ventilation.

  • Page 15: H Intermittent/Programmed Ventilation

    FOR HVAC INSTALLER ONLY AND HOMEOWNER The ventilation indicator “O” will be displayed whenever the unit There are two programs available for ventilation Monday is ventilating. The fan operation indicator “O” will also be lit. through Friday. There are also two programs for Saturday and Sunday.

  • Page 16: I Temperature Cutout Programming

    FOR HVAC INSTALLER AND HOMEOWNER 2. Press the program enter key to toggle to the “open for” feature will not need to be used. If temperature cutout is desired, setting. Using the up/down “RH” keys, change the program the setpoint by pressing the “PROGRAM ENTER” duration that the damper will ventilate fresh air.
  • Page 17 ATTENTION INSTALLER WIRE THE UNIT AND CONTROL PACKAGE AS SHOWN IN THE DIAGRAM BELOW Humidity/Fan Control Panel Ventilation Timer/ Humidity Control Panel 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.

  • Page 18: Maintenance

    FOR HVAC INSTALLER AND HOMEOWNER 7. Maintenance 7.1 Standard Air Filter The UA-90H is equipped with a MERV 11 media filter. This filter should be checked every three months. 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.

  • Page 19: Wiring Diagrams

    ULTRA-AIRE 90H WIRING DIAGRAM 8. Wiring Diagrams UA-90H with Humidity/Fan Control UA-90H with Ventilation Timer/Humidity/ (4024155) Fan Control (4024125) Ultra-Aire 90H Installer’s & Owner’s Manual...

  • Page 20: Optional Parts List

    FOR HVAC INSTALLER ONLY 9. Optional Parts List: UA-90H Indoor Air Quality System Item Part No. Description 4024125 Control Panel Assembly, Ventilation Timer & Humidity Control 4024155 Control Panel Assembly, Humidity/Fan 4026570 DEH 3000 Digital Controller 4025287 Filter Box 4026151 14"x14"x1"...

  • Page 21: Service Parts List

    FOR HVAC INSTALLER ONLY 10. Service Parts List: UA-90H Indoor Air Quality System Item Part No. Description 4023648 Compressor, Carlyle (EAA070111A) 4023681 Compressor Overload (EAA070111A) 4022484 Compressor Relay, SPST, 24 Vac, 30A 4024912 Compressor Run Capacitor, 25 MFD 4025561 4020924 Fan Relay, SPDT, 24 Vac, 15A 4022487 Transformer, 120/24 Vac, 40 VA...

  • Page 22: Service

    FOR HVAC INSTALLER ONLY 11. Service 11.2 Troubleshooting No dehumidification, neither fan nor compressor run with fan CAUTION switch and ventilation timer OFF. 1. Unit unplugged or no power to outlet. 2. Humidity control set too high or defective. CAUTION: Servicing the UA-90H with its high pressure 3.

  • Page 23: Refrigerant Charging

    FOR HVAC INSTALLER ONLY Unit not providing ventilation. Ventilation timer not operating 11.4 Compressor/Capacitor Replacement correctly. This compressor is equipped with a two terminal external overload 1. If timer is not functioning correctly reset timer and reprogram. and a run capacitor, but no start capacitor or relay. 2.

  • Page 24: Condensate Pump Kit

    CONDENSATE PUMP INSTALLATION: FOR HVAC INSTALLER ONLY CONDENSATE PUMP INSTALLATION. This condensate pump kit must be installed with leveling feet. Do not use casters. Step 1. Lay the unit on it's side. Make sure the filter door Step 3. Hand tighten the hose adaptor to get the threads is facing upward.
  • Page 25 CONDENSATE PUMP INSTALLATION: FOR HVAC INSTALLER ONLY Step 5. Turn the unit upright onto the leveling feet and remove Step 8. Attach the 20' drain hose to the condensate pump the screw shown. Keep this screw. You will use it in Step 7. and route it to a floor drain.

  • Page 26: Warranty

    ULTRA-AIRE 90H Dehumidifier Limited Warranty WARRANTOR: LIMITATIONS AND EXCLUSIONS: This warranty does not cover any defect, malfunction, etc. resulting from Therma-Stor LLC misuse, abuse, lack of normal care, corrosion, freezing, PO Box 8680 tampering, modification, unauthorized or improper repair Madison, WI 53708 or installation, accident, acts of nature or any other cause Telephone: 1-800-533-7533 beyond Therma-Stor LLC’s reasonable control.
  • Page 27 Information in this document is subject to change without notice. No part of PO Box 8680 • Madison, WI 53708 this document may be reproduced or transmitted in any form or by any means, Phone: 608-222-5301 • Fax: 608-222-1447 electronic or mechanical, for any purpose, without the express written permission Web: www.thermastor.com •...

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