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www.Ultra-Aire.com | (800) 533-7533

Ultra-Aire 98H Installation Instructions

WARRANTY

Limited Warranty. 

Therma-Stor, LLC (“Therma-Stor”) warrants as follows: (i) the Ultra-Aire 98H dehumidifier (“Product”) will 

be free of material defects in workmanship or materials for a period of two (2) years (“Two-Year Warranty”) following the date of 
initial purchase of such Product by an original customer purchasing from Therma-Stor or an authorized reseller (“Customer”); 
and (ii) the Product’s components will be free of material defects in workmanship or materials for a period of 

six (6) years 

following the date of initial purchase of such Product by a Customer. 

Limitation of Remedies.

 CUSTOMER’S SOLE AND EXCLUSIVE REMEDY UNDER THE ABOVE LIMITED WARRANTY AND 

THERMA- STOR’S ENTIRE LIABILITY THEREUNDER, SHALL BE, AT THE SOLE OPTION OF THERMA-STOR, REPLACEMENT 
OR REPAIR OF SUCH PRODUCT OR ITS COMPONENTS (“COMPONENTS”) BY THERMA-STOR OR THERMA-STOR’S 
AGENTS ONLY. REFRIGERANT, PIPING, SUPPLIES, TRANSPORTATION COSTS, LABOR COSTS INCURRED IN REPAIR OR 
REPLACEMENT OF SUCH COMPONENTS ARE NOT INCLUDED. THIS DISCLAIMER AND EXCLUSION SHALL APPLY EVEN 
IF THE EXPRESS WARRANTY AND LIMITED REMEDY SET FORTH HEREIN FAILS OF ITS ESSENTIAL PURPOSE. CUSTOMER 
ACKNOWLEDGES THAT NO REPRESENTATIVE OF THERMA-STOR OR OF ITS AFFILIATES OR RESELLERS IS AUTHORIZED 
TO MAKE ANY REPRESENTATION OR WARRANTY ON BEHALF OF THERMA-STOR OR ANY OF ITS AFFILIATES OR 
RESELLERS THAT IS NOT IN THIS AGREEMENT. Notwithstanding the above, during the term of the Two-Year Warranty only, 
Therma-Stor will provide, free of charge to Customer, all Components and labor (except costs related to removal and installation 
of Product) required to fulfill its obligations under such Two-Year Warranty. 

Disclaimer of Warranties.

 EXCEPT FOR ABOVE LIMITED WARRANTY, WHICH IS THE SOLE AND EXCLUSIVE 

WARRANTY PROVIDED WITH RESPECT TO THE PRODUCT AND ITS COMPONENTS, THERMA-STOR HEREBY DISCLAIMS 
ALL EXPRESS AND IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 

Warranty Limitations. 

The foregoing limited warranty extends only to a Customer and shall be null and void upon attempted 

assignment or transfer. A “defect” under the terms of the limited warranty shall not include problems resulting from Customer’s 
or Customer’s employees’, agents’, invitees’ or a third party’s misuse, improper installation, improper design of any system 
in which the Product is included, abuse, lack of normal care, failure to follow written instructions, tampering, improper repair, 
or freezing, corrosion, acts of nature or other causes not arising out of defects in Therma-Stor’s workmanship or material. If a 
Product or Component is replaced while under warranty, the applicable limited warranty period shall not be extended beyond 
the original warranty time period. The limited warranty does not cover any 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 warranty 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 applicable warranty period. 
Therma-Stor shall have no obligation hereunder with respect to any claim received by Therma-Stor after the expiration of the 
applicable warranty period. As a further condition to obtaining warranty coverage hereunder, the Customer must present forms 
of invoices evidencing proof of purchase of a Product. If such invoices do not clearly indicate the date of initial purchase by 
a Customer, the applicable Product’s date of manufacture will be used instead of the date of initial purchase for the purpose 
of calculating the commencement of the applicable warranty period. Warranty service must be performed by Therma-Stor or 
a servicer authorized by Therma-Stor. In order to obtain warranty service, the Customer should call Therma-Stor at 1-800-
533-7533 and ask for the Therma-Stor Products Service Department, which will then arrange for applicable warranty service. 
Warranty service will be performed during customary, daytime working hours. If the Product must be shipped for service, 
Customer shall be solely responsible for properly packaging the Product, for all freight charges, and for all risk of loss associated 
with shipment. 

Limitation of Liability.

 IN NO EVENT SHALL THERMA-STOR, IN CONNECTION WITH THE DESIGN, SALE, INSTALLATION, 

USE, REPAIR, REPLACEMENT OR PERFORMANCE OF ANY PRODUCT, COMPONENT, PART THEREOF OR WRITTEN 
MATERIAL PROVIDED THEREWITH, BE LIABLE, TO THE EXTENT ALLOWED UNDER APPLICABLE LAW, UNDER ANY 
LEGAL THEORY FOR ANY SPECIAL, DIRECT, INDIRECT, COLLATERAL OR CONSEQUENTIAL DAMAGES OF ANY KIND. 
NOTWITHSTANDING THE ABOVE LIMITATIONS AND WARRANTIES, THE SOLE AND EXCLUSIVE LIABILITY OF THERMA-
STOR, REGARDLESS OF THE NATURE OR THEORY OF THE CLAIM, SHALL UNDER NO CIRCUMSTANCES EXCEED THE 
PURCHASE PRICE OF THE PRODUCT, COMPONENT OR PART UPON WHICH THE CLAIM IS PREMISED. 

Applicable Law and Venue.

 ANY ARBITRATION, ENFORCEMENT OF AN ARBITRATION OR LITIGATION RELATED TO 

THE PRODUCT WILL BE BROUGHT EXCLUSIVELY IN DANE COUNTY, WISCONSIN, AND CUSTOMER CONSENTS TO THE 
JURISDICTION OF THE FEDERAL AND STATE COURTS LOCATED THEREIN, SUBMITS TO THE JURISDICTION THEREOF 
AND WAIVES THE RIGHT TO CHANGE VENUE. CUSTOMER FURTHER CONSENTS TO THE EXERCISE OF PERSONAL 
JURISDICTION BY ANY SUCH COURT WITH RESPECT TO ANY SUCH PROCEEDING. 

Miscellaneous.

 If any term or condition of this Limited Warranty is found by a court of competent jurisdiction to be invalid, 

illegal or otherwise unenforceable, the same shall not affect the other terms or conditions hereof or thereof or the whole of this 
Limited Warranty. Any delay or failure by Therma-Stor to exercise any right or remedy will not constitute a waiver of Therma- 
Stor to thereafter enforce such rights.

Summary of Contents for 98H

Page 1: ...in comfort health and property protection through Dehumidification Fresh Air Ventilation Optional Air Filtration TS 1037 12 17 Rev A P N 4034240 Serial No Install Date Sold by HVAC Installer Please Le...

Page 2: ...ation 13 No Existing Ductwork Installation 14 Recommended Closet Installation 15 Alternative Closet Installations 16 Fresh Air Ventilation 17 Determine Ventilation Requirements 18 Controls 19 Wiring C...

Page 3: ...LATION MAY CAUSE PROPERTY DAMAGE OR INJURY INSTALLATION SERVICE AND MAINTENANCE MUST BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN DEHUMIDIFIER IS HEAVY HANDLE WITH CARE AND FOLLOW INSTALLATION INSTR...

Page 4: ...ons 6 Round Inlet 10 Round Inlet 10 Round Outlet Air Filter MERV 13 Mini Pleat Efficiency 90 ASHRAE Dust Spot Size 14 x 17 5 x 1 75 Optional Air Filters MERV 11 Mini Pleat Efficiency 65 ASHRAE Dust Sp...

Page 5: ...Insulated Duct 25 4020656 6 Inlet Hood 4024375 10 Gravity Damper 4026969 10 Flex Duct 25 4022126 10 Flex Insulated Duct 25 Items Included in Box Ultra Aire 98H Dehumidifier Ultra Aire 98H Installation...

Page 6: ...ficient clearance for filter removal and to prevent airflow obstruction Electrical service access will require the removal of a side panel Allow sufficient clearance on a side of the unit Locate the d...

Page 7: ...let A B C A B C Air Flow Rear View Front View A B Fresh Air Ventilation Duct Fresh air ventilation is optional A 6 diameter duct is attached to the unit The 6 duct should be capped if fresh air is not...

Page 8: ...22 gauge thermostat wire ELECTRICAL REQUIREMENTS CAUTION DO NOT ALLOW THE 24V TERMINAL TO CONTACT THE COM DMPR TERMINALS ON THE ULTRA AIRE 98H OR DAMAGE TO THE TRANSFORMER WILL RESULT Electrical Preca...

Page 9: ...densate Condensate is automatically pumped to a remote location when the water level in the pump s reservoir rises to close the float switch The pump also contains a safety float switch The white lead...

Page 10: ...rigid ductwork in the structure Use a minimum 10 diameter round or equivalent rectangular duct for total duct lengths of up to 25 Use a minimum 12 diameter round or equivalent rectangular duct for lo...

Page 11: ...ing a dedicated return to the Ultra Aire 98H it is possible to select one to disconnect from the existing HVAC system and use it for the dedicated Ultra Aire 98H return Select a return from a central...

Page 12: ...tra Aire Return to HVAC Supply Installation is not possible there are several alternative installation options available DO NOT locate return in a bathroom or kitchen Control should be located remotel...

Page 13: ...location HVAC systems should be in close proximity for optimal air flow For multiple systems contact Technical Support at 800 533 7533 DUCTING TO HVAC SYSTEMS Recommended Multiple HVAC Systems Install...

Page 14: ...ure to utilize multiple rooms to allow air inside the structure to properly circulate Proper air distribution is important to ensure even humidity control and heat distribution throughout the structur...

Page 15: ...re 98H to provide fresh air ventilation optional Control should be located remotely from the dehumidifier and placed in a central location Where outlet space is restricted the outlet duct collar is op...

Page 16: ...tral Return to HVAC Return Attach outlet duct with a vertical flow through so air is not discharged into wall or other obstruction see Page 7 for Vertical Flow Through The HVAC system will naturally p...

Page 17: ...amper is used a digital control is required It may be necessary to use 8 duct work if additional fresh air is required In cold climates or at times when the dew point is low ventilation can be used to...

Page 18: ...X 0 03 5 X 7 5 91 5 CFM Record the required CFM ____________ FRESH AIR VENTILATION Determine Ventilation Requirements The MINIMUM ventilation requirement is calculated using ASHRAE 62 2 2016 Use one o...

Page 19: ...t breaker without correcting the electrical short may result in transformer damage Be sure to check the electrical schematic in this manual or inside the access panel of the Ultra Aire 98H before maki...

Page 20: ...mpressor Control DMPR 24VAC Power Transformer Neutral Side Spare Terminal Open Terminal Block Control Operation Unit ON Make contact between 24V and DEHU terminals Unit OFF Make contact between 24V an...

Page 21: ...1 Pull back slide latch to swing filter door open Step 2 Remove the filter by gently pulling it straight out of the unit Insert new filter by gently pushing it straight into the unit Make sure the AI...

Page 22: ...ag Filter Nonsupported Legionella microfine fiberglass or 11 60 65 95 Humidifier Dust Better Commercial Buildings synthetic media 12 36 in deep 6 12 pockets Lead Dust 10 50 55 95 Milled Flour Box Filt...

Page 23: ...n 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 SERVICE Service Parts List Item Part No Description 1...

Page 24: ...er only the fan should run Disconnect the terminals 8 Connect the 24V and DEHU terminals together fan and compressor should run Disconnect the terminals 9 If this test works then the field control wir...

Page 25: ...es or below and or in area of low relative humidity the dehumidifier will produce little to no water 7 Collecting the water removed in a 24 hour period will give a measurement of performance WARNING E...

Page 26: ...rol wiring 3 Check wire connections at control and unit 4 Reset circuit breaker button on dehumidifier WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL POWER MUST BE PRESENT TO PERFORM SOME TESTS THESE TEST...

Page 27: ...ts 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 Responsibilit...

Page 28: ...800 533 7533 www Ultra Aire com...

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