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The Ultra-Aire 98H is a whole house ventilating dehumidifier that 
is integrated into the heating and cooling system to provide the 
ultimate 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 Leave Manual for Homeowner

9

8

H

Installation Instructions

INSTALLATION BY A HVAC PROFESSIONAL IS RECOMMENDED

YEAR

FULL WARRANTY

YEAR

FULL WARRANTY

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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