Aprilaire Dehumidifier 1750A-1770A User's Manual
Contents
1. dehumidifier THIS WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS CORPORATION FOR ANY LABOR COSTS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE DEHUMIDIFIER ITSELF IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO THE AFORESAID FIVE YEAR PERIOD RESEARCH PRODUCTS CORPORATION S LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OTHER THAN DAMAGES FOR PERSONAL INJURIES RESULTING FROM ANY BREACH OF THE AFORESAID IMPLIED WARRANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED THIS LIMITED WARRANTY IS VOID IF DEFECT S RESULT FROM FAILURE TO HAVE THIS UNIT INSTALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR IF THE LIMITED WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR ALL DISCLAIMERS OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above exclusion or limitations may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state WARRANTY REGISTRATION Visit us on line at www aprilaire com to register your Aprilaire product If you do not have on line access please mail a postcard with your name address phone number email address product purchased model number2. Model 1750A 1770A Dehumiditier Owner s Manual PLEASE LEAVE THIS MANUAL WITH THE HOMEOWNER Installed by Installer Phone Date Installed Filter Humidity Filter Access Control Inlet Outlet Access 5 S 3 eN a gt i aa On Off Switch Thank you for your purchase of the Aprilaire Dehumidifier Your dehumidifier is designed to remove humidity from your home maintaining the humidity at a comfortable level and reducing the unwanted effects of high humidity Use your Aprilaire Dehumidifier to control the humidity that comes into the home from opening doors and infiltration i e outdoor air entering through the building envelope You can reduce the amount of humidity that enters the home by closing windows doors and fireplace flues when the outdoor humidity is high and by drying clothes outside Whirlpool tubs and saunas will also increase the amount of humidity in the home Direct exhaust from kitchen vents and bath fans is the best means of controlling humidity due to cooking and showers baths Your Aprilaire Dehumidifier is not designed for pool rooms or to eliminate or reduce condensation on windows in the winter and works best when the indoor temperature is above 65 F 18 C WHOLE HOME DEHUMIDIFICATION The Aprilaire Dehumidifier controls the humidity level in your entire home A powerful blower inside the dehumidifier draws air into the cabinet filters and removes moisture from the air and then discharges th
3. date of purchase and dealer name and address to Research Products Corporation P O Box 1467 Madison WI 53701 Your Warranty Registration information will not be sold or shared outside of this company 10009844 2 12 B2205732A 4 P O Box 1467 Madison WI 53701 1467 Phone 800 334 6011 Fax 608 257 4357 www aprilaire com Printed in U S A 2012 Aprilaire A division of Research Products Corporation
4. difier runs o If you prefer the air to be less dry decrease the setting this will reduce the amount of time that the dehumidifier runs Control Knob Setting Indoor Temperature F The settings on the dial can be approximated to relative humidity RH a3 k i a using the table to the right e 71 80 Your comfort is the best measure of how to adjust your setting When first installed your dehumidifier has to remove all the moisture that is Initially in your home The home acts like a sponge so the moisture in the materials of your home is at the same level as the air After R i drying the air the materials of the home will release moisture back into the air until they are again at the same level As a result it is not uncommon for the dehumidifier to operate for an extended period 7 when first installed Note his table is for reference only ENERGY SAVINGS TIP Adjust the setting to be as low as is comfortable to reduce dehumidifier run time if it feels clammy or smells damp raise the setting To save energy turn the dehumidifier setting to OFF when you open your windows just as you would with air conditioning WHEN DOES THE DEHUMIDIFIER TURN ON The dehumidifier turns on once per Cycle Period Your installing contractor set the Cycle Period when the dehumidifier was first installed It may be set for once every 30 minutes once per hour once every two hours or once every three hours The Cyc
5. e dry air to the home Inside the cabinet a sealed refrigeration system removes moisture by moving the air through a series of tubes and fins that are kept colder than the dew point of the incoming air The dew point is the temperature at which moisture in the air will condense much like what occurs on the outside of a cold glass on a hot summer day The condensed moisture drips into the dehumidifier drain pan to a drain tube routed to the nearest floor drain no need to empty a tub every day After the moisture is removed the air moves through a second coil where it is reheated before being sent back into the home It is normal for the air leaving the dehumidifier to be warmer than the air entering the dehumidifier SETTING THE DESIRED HUMIDITY LEVEL At the inlet side of the unit a humidity control knob sets the desired humidity level between 1 less dry dehumidifier runs less Humidity Control Knob and 7 more dry dehumidifier runs more or can be used to turn the dehumidifier OFF The ON OFF switch on the front of the unit should be left ON and only used to turn the dehumidifier off when performing maintenance see page 4 for maintenance requirements set the control at a Normal level between 3 and 4 when first installed Allow the dehumidifier to run for 24 hours before deciding If you want to change the setting o If you prefer the air to be more dry increase the setting this will increase the amount of time that the dehumi
6. le Period setting determines how frequently the dehumidifier measures the humidity level in the air Once per hour is usually sufficient to maintain comfort If you want the dehumidifier to check the humidity level more or less often contact your installing contractor An optional Model 76 Control can be mounted directly in the home for easy access to the humidity setting and measured humidity in the living space The Model 76 continuously measures the humidity level and will turn on the dehumidifier on demand The Model 76 can also act as a remote control if the dehumidifier is located where it is not easy or convenient to access When the Model 76 Control dehumidifier is located in and dehumidifying a crawl space sealed attic or basement there is no need to have to crawl under the house a aati or trudge up and down the stairs to know that your dehumidifier is Aprilaire working The Model 76 can be installed where you spend most of your time and making changes to the setting or seeing what the humidity is in these areas can be done from the comfort and convenience of where you live Consult your installing contractor for more information about the Model 76 Control OPTIONAL TWO ZONE DEHUMIDIFICATION The dehumidifier can be installed to dehumidify just one area or zone i e the whole home or as shown in the illustration to the right can be installed to dehumidify two separate areas or zones i e the home and the basement i
7. ndependently Each zone can have its own humidity level setting control when installed with the Model 76 Control or Model 8910 Home Comfort Control or the two zones can share the same setting control You and your installing contractor determine which zone TO FROM PRIMARY ZONE is the most important to control and this becomes the Primary zone TO DAMPERS while the other is the Secondary zone The dehumidifier will turn SECONDARY ZONE ZA on and open close dampers to direct the dry air and satisfy the needs iy of the Primary zone If there is no demand from the Primary zone the secondary zone will be dehumidified Contact your installing contractor for details about Primary Secondary Zoned Dehumidification ZONE a 90 1536 When the dehumidifier turns on the blower circulates the air for three 3 minutes before measuring the humidity level of the air The green status light below the control setting flashes when the dehumidifier is circulating the air If the humidity of the air is higher than the setting the compressor turns on and the green Status light is lit continuously The dehumidifier turns off after the humidity level of the air has dropped below the setting starus wo Normal Operation Solid Green Air Sampling Flashing Green OPTIONAL HEATING AND COOLING SYSTEM BLOWER OPERATION Service Required Flashing Red Your installing contractor may have configured the dehumidifier to t
8. o Check Drain System 1 Turn the ON OFF switch OFF 2 Remove the filter access door from either side of the dehumidifier 3 Slide the filter out of the dehumidifier to expose the evaporator coil 4 Slowly pour a pint of water into the dehumidifier drip pan near the bottom of the evaporator coil so that the water flows into the drain pan 5 Check where the drain piping flows into the floor drain If water does not flow out the unit is not properly EVAPORATOR COIL DRIP PAN FILTER RAIL 7 Replace the filter access door 8 Turn the ON OFF switch ON draining 6 Turn on the ON OFF switch ON CAUTION 90 1558 Do not use spray solvents or cleaners on or near the inlet side of the dehumidifier If desired apply cleaner to a cloth and use to clean the cabinet LIMITED WARRANTY Your Research Products Corporation Aprilaire Dehumidifier is expressly warranted for five 5 years from date of installation to be free from defects in materials or workmanship Research Products Corporation s exclusive obligation under this warranty shall be to supply without charge a replacement for any component which is found to be defective within such five 5 year period and which is returned not later than thirty 30 days after said five 5 year period by you to either your original supplier or to Research Products Corporation Madison Wisconsin 53701 together with the model number and installation date of the
9. ur home and If the humidity level gets higher than the setting it will turn on the compressor to remove the moisture An outdoor sensor if installed with the ventilation option will monitor the temperature of the outdoor air and if the temperature exceeds 100 F 38 C or drops below 0 F 18 C ventilation will not occur If the outdoor temperature is between 20 F 7 C and O F 18 C ventilation will only occur when your heating system operates MAINTENANCE CLEAN OR REPLACE THE AIR FILTER After initial installation check the air filter after 6 months If it appears matted with dust pet hair or other debris maintain a 6 month cleaning schedule If it appears clean or lightly loaded maintain a 12 month cleaning schedule Replacement filters are Aprilaire Part No 4510 and can be purchased from your installing contractor Filter Cleaning Procedure 1 Turn the ON OFF switch OFF 2 Remove the filter access door from either side of the dehumiditier 3 Slide the filter out of the dehumidifier 4 Flush the filter with warm water and a mild detergent solution 5 Shake off the excess water from the filter 6 Replace the filter make sure the filter seats in both the top and bottom filter rails CHECK THE DRAIN The drain should be checked annually to ensure there is no blockage or air lock in the drain system If the unit is not properly draining have it checked by a qualified service professional Procedure t
10. urn on the heating and cooling system blower when the dehumidifier turns on to allow for improved circulation of the dry air 90 1561 HOW DOES THE OPTIONAL VENTILATION WORK With the ventilation option installed if you are unsure if this option has been installed contact your installing contractor the dehumidifier will bring in outside air for the amount of time set on the Cycle Time adjustment during the set Cycle Period Your dehumidifier will work with your heating and cooling system blower to satisfy the ventilation requirements that have been set For example if the Cycle Time is set for 20 minutes and the Cycle Period for 1 hour you will get outdoor air introduced to your home for 20 minutes every hour When your heating and cooling system blower operates the dehumidifier blower will turn on and will open a normally closed damper in the duct that brings in outdoor air If it is getting close to the end of the Cycle Period and your heating and cooling system blower has not operated the dehumidifier will turn on the system blower Using the 20 minute per hour settings as an example if the heating or cooling comes on for only 10 minutes the dehumidifier control will turn on the system blower for the final 10 minutes of the 1 hour cycle period to deliver the required amount of fresh air Outdoor air that is brought in will mix with the air circulating through your heating and cooling system The dehumidifier will monitor the air in yo
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