Owner`s Manual (General)
Contents
1. Some states do not allow limitations on how long an implied warranty lasts or the exclusion or imitation 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 product purchased and date of installation 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 Thank you RESEARCH PRODUCTS CORPORATION PO BOX 1467 e MADISON WI 53701 1467 10007233 7 07 B2204273A 2007 Research Products Corporation 18 52. With your purchase of this humidification system you have invested in a humidifier that operates on the evaporative principle nature s own way of adding moisture providing optimum relative humidity RH throughout the heating season It is very possible that you have questions concerning your new humidifier questions on what it can do for you and what you should do to receive maximum benefits from it This booklet is intended to answer these questions Nature in producing an invigorating comfortable April day combines just the right temperature and the right amount of moisture Aprilaire humidifiers employ the same principle with refinements to give you the optimum RH for maximum allowable comfort all winter long The important considerations in the evaluation of a humidifier are precise control sufficient capacity trouble free performance and minimum maintenance The operating principle of your Aprilaire humidifier provides all of these advantages Here briefly is the method Except for Models 350 and 360 the Aprilaire humidifier is installed to operate in conjunction with the furnace blower motor When the Aprilaire humidifier Control calls for humidity and the blower motor is operating water flows to the distribution tray located at the top of the humidifier The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets It flows by gravity over the Water Panel e
3. 8 Drain Line 9 Power Cord 90 1075 Note Humidifier Control setting and turn dial to the OFF position Disconnect electrical power and turn off water supply Unlatch humidifier front cover assembly 1 from base assembly 2 at the bottom of the cover lift and set aside Pull out the Water Panel evaporative assembly 3 by grasping at the top and tipping out Unsnap the distribution tray 4 from the scale control insert 7 Lightly scrape out or brush off any mineral deposits being careful not to stretch or loosen the synthetic fabric liner Soaking the tray in vinegar or a lime removing agent is helpful when trying to remove stubborn mineral deposits Slide the Water Panel evaporator 6 out from the scale control insert 7 Clean the scale control insert of mineral deposits Replace the Water Panel evaporator Stock No 35 with a new Genuine Aprilaire Water Panel Slide the Water Panel evaporator back into the scale control insert with the colored spot up and snap the distribution tray 4 back into place Inspect the plastic feed tube by gently flexing it and looking for cracks or signs of wear Replace tube if it is cracked brittle or has been damaged Reinstall the Water Panel evaporative assembly 3 into the humidifier by fitting its drain into the round receptacle at the base of the humidifier Push the assembly in at the top between the retaining ribs that hold the assembly in place in a vertical position Re
4. between RH levels that would be most desirable for comfort reasons and humidity levels that are suitable for protection of your home and to avoid condensation on your windows For example a wintertime indoor RH of 50 may be considered ideal for comfort but unfortunately it probably would result in condensation which can cause damage to your home Observing the recommended RH levels on your Humidifier Control is an important safeguard Condensation of water on the inside surface of windows in the form of fogging or frost is usually an indication of too much RH This same condensation can take place in other areas in your home with the possibility of damage resulting TABLE 3 Outdoor Temperature Indoor Relative Humidity Outside Temperature Recommended RH 40 F 45 30 F 40 20 F 35 10 F 30 O F 25 10 F 20 20 F 15 OPERATING INSTRUCTIONS MODELS 350 360 500M 600M amp 700M FIGURE C Manual Humidifier Control _ SS WHEN OUTSIDE TEMP IS 20 0 20 Y RESET HUMIDITYTO 15 25 35 15 wi sp SUMIDITY Y bd ne at Ss ey 90 1237 Your Aprilaire humidifier is controlled by a Manual Humidifier Control see Figure C The Manual Humidifier Control is installed either in the cold air return duct or on an interior wall of the home It is important to anticipate a drop in outdoor temperature and r
5. or blocked p p hay ra m Paa po Eaa oO 13 Turn on the water supply Return integral bypass damper to appropriate position 14 Check system operation Automatic Digital Humidifier Control Automatic or Manual mode Check system operation and reset Change Water Panel indicator by setting the knob to Test Reset With furnace blower operating and furnace calling for heat humidifier will operate for one minute DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE 15 Set Humidifier Control to its original position 15 REQUIRED MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 700A amp 700M 4 WARNING REQUIRED MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 500A 500M 600A amp 600M A CAUTION r a lt x ID lt x P Je mr i Sudden operation may cause personal injury or property damage Turn Humidifier Control to OFF or lowest setting before servicing 1 Front Cover 2 Feed Tube 3 Integral Bypass Damper 4 Water Panel Evaporative Assembly 5 Distribution Tray 6 V Notches 7 Water Panel Evaporator 8 Scale Control Insert SSS SSS at CSS 9 Drain Line 90 1076 1 Note Humidifier Control setting and turn dial to the OFF position 2 Turn off water supply Turn the integral bypass damper 3 to the SUMMER position 3 Press the t
6. season In the drain equipped models most of these solids are effectively controlled by flushing them down the drain Hot supply water 140 F maximum is recommended with drain type humidifiers for increasing capacity and is required for heat pump applications 4 WARNING RISK OF SCALDING Water temperature over 125 F can cause severe burns and scald instantly Shut off the hot water supply before disconnecting or tapping into any hot water supply line ANNUAL MAINTENANCE For best performance we recommend that you replace the Water Panel evaporator in your Aprilaire humidifier at least annually with the exception of Model 400A which should be changed twice per heating season The Change Water Panel indicator light Automatic Control only will blink when it is time to change your Water Panel See individual model instructions for additional maintenance To purchase a new Water Panel e Call the installer of your Aprilaire humidifier This information is often found on your equipment e Call your heating and air conditioning dealer e Use our Dealer Locator at www aprilaire com e Look in the Yellow Pages under Humiditying Apparatus or Heating amp Air Conditioner Contractors e f none of the above is successful and you still need information please feel free to write us e Purchase only Genuine Aprilaire Water Panels to maintain performance If your humidifier is equipped with an Automatic Humidifier C
7. vinegar or a lime removing agent is helpful when trying to remove stubborn mineral deposits Slide the used Water Panel evaporator 7 out of the scale control insert float chamber and dispose of the Water Panel Remove the float cover 10 and inspect the floats 11 and float chamber for mineral build up Remove deposits as needed from floats float chamber and scale control insert Wash the parts with a disinfecting cleaner Reassemble the floats and float cover Make sure stems of both floats extend through openings in float cover and that floats move freely up and down Inspect the plastic feed tube 2 by gently flexing it and looking for cracks or signs of wear Replace tube if it is cracked brittle or has been damaged Slide a new Aprilaire No 45 Water Panel evaporator 7 into the scale control insert float chamber 8 Snap the distribution tray 5 back on the scale control insert 8 Reinstall the Water Panel evaporative assembly 4 into the humidifier Take care not to over bend the water level sensor assembly Push the top of the Water Panel evaporative assembly firmly back until it snaps into place 11 Push the end of the feed tube back firmly into the distribution tray Replace the front cover 12 Under normal operation the overflow drain line 9 will never have water in it However inspect it for mineral deposits and replace if necessary Make sure the drain line has a constant downward slope and is not flattened
8. abs in the latches on the top and bottom of front cover 1 and pull cover off base with both hands Set aside Carefully pull the plastic feed tube 2 out of the distribution tray 5 at the top of the Water Panel evaporative assembly 4 Pull this assembly out by grasping at top and tipping out Unsnap the distribution tray 5 from the scale control insert 8 Lightly scrape out or brush off any mineral deposits being careful not to stretch or loosen the synthetic fabric liner Soaking the tray in vinegar or a lime removing agent is helpful when trying to remove stubborn mineral deposits Slide the Water Panel evaporator 7 out from the scale control insert 8 Clean the scale control insert of mineral deposits Replace the Water Panel evaporator Stock No 35 for Models 600A amp 600M and Stock No 10 for Models 500A amp 500M with a new Genuine Aprilaire Water Panel Slide the Water Panel evaporator back into the scale control insert with the colored spot up and snap the distribution tray 5 back into place Inspect the plastic feed tube 2 by gently flexing it and looking for cracks or signs of wear Replace tube if it is cracked brittle or has been damaged Reinstall the Water Panel evaporative assembly 4 into the humidifier by fitting its drain into the round receptacle at the base of the humidifier Push the assembly in at the top until it snaps into place Push the end of the feed tube back firmly into the distribution t
9. be Double Wrench to Prevent Leaking 10 Remove the drain line from the bottom of the humidifier If applicable flex it to loosen any mineral deposits or blockages Flush the drain line with water under pressure to clear it of any debris and slip it back onto the drain fitting If drain line does not clean properly replace it Inspect the drain line to make sure it has a constant downward slope and is not flattened or blocked 11 Turn on water supply and reconnect electrical power to the furnace 13 gt on a LD 9 W mr i REQUIRED MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODELS 350 amp 360 44 WARNING 120 volts may cause serious injury from electrical shock Disconnect power and shut off water supply before servicing 1 Inlet Grille 2 Distribution Tray 3 Scale Control Insert 4 Distribution Tray Cover 5 Water Panel Evaporator 6 Drain Spud 7 Power Cord 8 Metal Housing 9 Water Panel Evaporative Assembly 1 Note Manual Humidifier Control setting and turn dial to the OFF position 2 Disconnect electrical power and turn off water supply 3 Remove screws of the inlet grille 1 The grille can now be removed from the metal housing 8 4 Lift the Water Panel evaporative assembly 9 out of the humidifier housing 8 5 To remove the distribution tray 2 from Water Panel evaporative assembly 9 push down on tray and pull out scale control in
10. e Aprilaire Humidifier Control to OFF or lowest setting before servicing INTRODUCTION Thank you for your recent Aprilaire humidifier purchase We appreciate your business and are pleased to add your name to our growing list of customers You have invested in the highest quality equipment available Aprilaire manufactures whole house indoor air quality products and is a recognized leader in the heating and air conditioning industry Your humidifier will require periodic maintenance to assure continued fine performance See page 11 to obtain service parts and or replacement Water Panel evaporators Now please take a few minutes and read this booklet This will familiarize you with the benefits you will receive from the equipment you just purchased and help you understand the routine maintenance that will be required Be sure to register your humidifier warranty online at www aprilaire com warranty PERFo Genuine Aprilaire Replacement Water q Meat y Panel evaporators are available from your tas FRR installing contractor or from most other rilaire heating and air conditioning contractors in Wa lt 7 your area Use the dealer locator in our web waler site www aprilaire com or look in the E Panel Stock No 35 Yellow Pages under Humidifying Apparatus or Heating amp Air Conditioning Contractors Purchase only genuine Aprilaire Water Panels to maintain peak performance PRINCIPLE OF OPERATION
11. e operation of the humidifier The control senses indoor RH and outdoor temperature and automatically adjusts the operation time of the humidifier to provide the optimum humidity level in the home The digital readout on the automatic control displays the RH level inside the cold air return duct RH is a measure of the amount of moisture in the air as a percentage of what the air can hold Warm air can hold more moisture than cold air can This reading will accurately indicate the RH in the living space when the furnace blower is operating Once the furnace blower stops the readout will not change The control has lights which indicate humidifier operation when the water panel needs to be replaced and when service is required See Operating Instructions for more information There are many humidifiers on the market They all add moisture with varying degrees of efficiency None however offer the features design and performance incorporated into your new Aprilaire humidifier OPERATING INSTRUCTIONS MODELS 400A 500A 600A amp 700A The Automatic Digital Humidifier Control offers two modes of operation Automatic or Manual An explanation of both modes follows See Figure A on page 5 for Automatic Mode See Figure B on page 8 for Manual Mode When in the Automatic Mode this system offers the following benefits e Automatically adjusts your home s RH based on the outdoor temperature You will always receive the optimum am
12. educe the setting accordingly to avoid excessive condensation just as with the Automatic Digital Humidifier Control installed in Manual Mode see page 8 To determine the indoor RH slowly turn the knob clockwise and counterclockwise and listen for 2 clicks The indoor RH is within the range of the 2 clicks CHECK THE HUMIDIFIER OPERATION AUTOMATIC DIGITAL HUMIDIFIER CONTROL Set the knob to Test Reset make sure that the water saddle valve is open and that there is electricity to the humidifier The furnace blower motor must be operating and the furnace calling for heat for the humidifier to function Note Turning the knob to Test Reset resets the Change Water Panel internal timer In addition at this setting the humidifier will only operate for 1 minute Reduce the Humidifier Control setting to the recommended inside RH depending on the outside temperature DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE Follow the suggested settings prior to a drop in the outside temperature MANUAL HUMIDIFIER CONTROL Set the knob to the highest setting make sure that the water saddle valve is open and that there is electricity to the humidifier The furnace must be operating for the humidifier to function Once water is entering the humidifier and coming out at the drain reset the Humidifier Control to its original setting iG ADDITIONAL INFORMATION FOR ALL MODELS Be sure to keep fireplace dampers closed when not
13. for the disposable Water Panel which will have to be replaced from time to time depending upon the amount of use Research Products Corporation s exclusive obligation under this warranty shall be to supply without charge a replacement for any part of the humidifier 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 humidifier S WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS CORPORATION FOR ANY LABOR TS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY STALLER AS CONTRASTED TO DEFECTS IN THE HUMIDIFIER ITSELF D WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL LIMITED URATION TO THE AFORESAID FIVE YEAR PERIOD RESEARCH PRODUCTS RATION S LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OTHER THAN R PERSONAL INJURIES RESULTING FROM ANY BREACH OF THE AFORESAID RANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED THIS TED WARRANTY IS VOID IF DEFECT S RESULT FROM FAILURE TO HAVE THIS UNIT STALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR IF THE LIMITED RRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR ALL DISCLAIMERS OF LIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION
14. g for heat Humidifier will operate for one minute NOTE Placing the knob in Test Reset resets the Water Panel change timer Red Call Dealer for Service light flashes Figure A Note the error code on the display E1 E2 or E3 and call your heating and air conditioning dealer light flashes Figure A Yellow Change Water Panel Refer to the humidifier Owner s Manual for instructions on changing the Water Panel or call your heating and air conditioning dealer for service After the Water Panel is replaced turn the Control knob to the Test Reset position until the green Humidifier On light flashes to reset the Water Panel change timer ADDITIONAL INFORMATION Your humidifier is a precision system that will accurately maintain the RH in your home For every 1 F change in outdoor temperature the Automatic Digital Humidifier Control will automatically adjust the indoor RH by 1 2 TABLE 2 Relative Humidity Guide Outdoor Temperature F 30 Dial Setting ANpiuiny aanejay 45 The Automatic Digital Humidifier Control will accurately control the humidity in your home to a maximum of 45 RH and a minimum of 10 RH The values of outdoor temperature and dial settings may fall in between or outside of the listed values in Table 2 Due to varying conditions in your home cooking showering etc it is
15. in use They provide an excellent escape route for heat as well as humidity On occasion indoor moisture producing activities such as clothes drying cooking showers etc may raise the RH level higher than it should be even though the Aprilaire humidifier is not operating Telltale indications again are condensation or frost on cold surfaces such as windows doors walls etc If such condensation persists for several hours your home should be ventilated to dissipate the potential damaging excess moisture levels EFFECT OF WATER CHARACTERISTICS Whether to use available tap water even though it may be quite hard or chemically softened water is a common question homeowners have when their dealer is installing a humidifier Your humidifier is designed to operate effectively using hot cold hard or mechanically softened water Hot water is required for Models 350 and 360 Do not use hot water with Model 400A Water used in homes contains varying amounts of minerals The residue remaining as a result of hard water evaporation is primarily calcium and magnesium components and is usually quite hard scaly and dense Residue from softened water tends to be soft and fluffy and has a greater volume than hard water scale In either case the service life of a Water Panel evaporator will be virtually the same The Water Panel evaporator should be changed once a year with the exception of the Model 400A which should be changed twice a heating
16. ing the next 24 48 hours it may be necessary to adjust the dial for more or less humidity depending on your personal comfort and home s requirements Refer to TABLE 1 Operation Guide N During the coldest portion of the first heating season minor adjustments may be necessary This is dependent upon your home s construction Refer to TABLE 1 Operation Guide The RH in your home will now be accurately controlled to meet your needs and should not need further adjustment during future heating seasons Make note of the dial setting in the event you temporarily move the knob to OFF when performing annual maintenance of your Aprilaire humidifier Condition TABLE 1 Operation Guide Solution Condensation on windows Reduce the setting on the control dial by 1 increment Lack of humidity Increase the setting on the control dial by 1 increment Humidifier does not operate Solenoid does not click when control is moved to Test Reset position Humidifier won t shut off Turn dial to Test Reset Make certain furnace blower is operating and furnace is calling for heat If unit still does not operate consult a heating contractor Turn dial to Off If unit continues to operate consult a heating contractor Test mode System operation is checked by setting the knob to Test Reset Make certain furnace blower is operating and furnace is callin
17. move the drain line 8 from the bottom of the humidifier If applicable flex it to loosen any mineral deposits or blockage Then flush it with water under pressure If it does not clear replace it Slip drain line back onto the drain fitting Make sure the drain line has a constant downward slope and is not flattened or blocked Reinstall front cover assembly 1 by hooking at the top of the base assembly 2 and latching at the bottom 11 Reconnect electrical power 9 and turn on the water supply Check system operation Manual Humidifier Control Model 700M With the furnace blower operating turn up Humidifier Control and check system operation Automatic Digital Humidifier Control Model 700A Automatic or Manual mode Check system operation and reset Change Water Panel indicator by setting the knob to Test Reset With furnace blower operating and furnace calling for heat humidifier will operate for one minute DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE 13 Set Humidifier Control to its original position NOTE The motor is permanently lubricated and does not need to be oiled IN o gt m gt po Eaa Oo N 17 a s DW mr i LIMITED WARRANTY Your Research Products Corporation Aprilaire humidifier unit is expressly warranted for five 5 years from date of installation to be free from defects in materials or workmanship except however
18. normal for the RH reading to vary slightly from Table 2 WATER PANEL CHANGE INDICATOR The control keeps track of humidifier operation time The yellow Change Water Panel light flashes once a typical amount of running time has elapsed This running time is preset by the installer based on the humidifier model and water characteristics TEST RESET The Test Reset feature allows the humidifier operation to be checked even if there is no call for humidity See Check the Humidifier Operation on page 9 MANUAL MODE FIGURE B Manual Mode Automatic Humidifier Control Indoor Humidity Rg O Call Dealer for Service O Change Water Panel O Humidifier On AUMID we Se rilaire S J gt MANUAL MODE 90 1236 MANUAL MODE Your Automatic Digital Humidifier Control is installed in the cold air return When installed in the Manual Mode see Figure B it is important to anticipate a drop in outdoor temperature and reduce the setting accordingly to avoid excessive condensation For example with an outdoor temperature of 20 F the correct setting will be 35 RH If the temperature is expected to fall to 0 F that evening then merely reduce the setting to 25 several hours prior to the temperature change The recommended settings on the Humidifier Control are based on years of research see Table 3 for the average home These settings represent a compromise
19. on Your heating contractor should include humidifier service at the same time All models are equipped with a water delivery system that includes a water feed tube in line water strainer and orifice as shown below These parts should be inspected and or cleaned periodically to assure continued proper humidifier performance Inspect more often if seeing white dust WATER LINE INSPECTION AND SERVICE INSTRUCTIONS fl 1 Disconnect electrical power to the furnace WATER FEED TUBE and shut off water supply ia OUTLET 2 Disconnect the water line at the inlet COMPRESSION compression nut NUT 3 Remove the in line strainer from inside E ORIFICE the inlet side of the valve by using a small nail or wire Flush the in line strainer clean or replace 0 4 Flush the in line strainer cl SOLENOID with a new strainer Service Department VALVE Part No 4004 0 INLET 5 Reconnect the inlet water line Double Wrench to Prevent Leaking z 6 Disconnect the water feed tube at the IN LINE outlet compression nut i STRAINER as 7 Inspect the water feed tube by gently flexing it and looking for cracks or signs of wear Replace tube if it is cracked brittle INLET Or COMPRESSION or has been damaged NUT ee 8 Remove the orifice from the copper or avis LJ plastic water feed tube and make sure this small opening is unplugged 9 Replace the orifice and reconnect the water feed tu
20. ontrol with Water Panel change indicator after replacing the Water Panel turn the control knob to the Test Reset position until the Humidifier On light blinks to reset its timer Blower must be operating and furnace calling for heat Be sure to turn the control knob back to it s original setting If the Humidifier On light continues to blink your humidifier is in Test mode DO NOT LEAVE THE HUMIDIFIER IN TEST MODE OR IT WILL NOT OPERATE ANNUAL SUMMER SHUTDOWN 1 For Models 400A 500A 500M 600A and 600M close the bypass damper which is a part of the humidifier with the use of the small damper handle 2 Shut off the water supply to the humidifier by fully closing the saddle valve Humidifier Control Automatic Digital Humidifier Control in Automatic Mode see Figure A No adjustment is necessary Automatic Digital Humidifier Control in Manual Mode see Figure B Set the knob to the OFF position Manual Humidifier Control see Figure C Set the knob to the OFF position DEALER INSTRUCTIONS FOR PREVENTATIVE MAINTENANCE NOTE Annual inspection and preventative maintenance of your total heating system is important for efficient and safe operation Call your Aprilaire dealer for humidifier service and maintenance inspection stae PERIODIC PREVENTATIVE MAINTENANCE NOTE Periodic inspection and preventative maintenance of your total heating system is important for efficient and safe operati
21. ount of humidity during the heating season e Eliminates the need to manually adjust the control when outdoor temperature changes e Precisely controls the RH in your home and increases the time maximum comfort is maintained Your home and its furnishings are always protected from the damaging effects of excess condensation or low humidity during the heating season e Eliminates the need to turn the dial setting to Off during the summer season Simple operation with a few adjustments AUTOMATIC DIGITAL HUMIDIFIER CONTROL INDICATOR LIGHTS Call Dealer for Service The red light indicates that the humidifier is not operating normally and that service is required Change Water Panel The yellow light indicates that it is time to change the Water Panel in the humidifier Humidifier On The green light indicates that the humidifier is operating normally FIGURE A Automatic Mode is x Automatic Humidifier Control O Call Dealer for Service O Change Water Panel O Humidifier On i ee Aprilaire 90 1235 AUTOMATIC MODE Your Aprilaire Humidifier Control is installed in the cold air return duct During the first heating season your Humidifier Control needs to be set initially to match your home s condition Please follow these steps when adjusting your control refer to Figure A me Turn the dial setting knob to 5 which is within the normal range Dur
22. ration 12 Set Manual Humidifier Control to its original position oD i go 14 REQUIRED MAINTENANCE INSTRUCTIONS APRILAIRE HUMIDIFIER MODEL 400A CAUTION Sudden operation may cause personal injury or property damage Turn Humidifier Control to OFF or lowest setting before servicing 1 Front Cover 2 Feed Tube 3 Integral Bypass Damper 4 Water Panel Evaporative Assembly 5 Distribution Tray 6 V Notches 7 Water Panel Evaporator 8 Scale Control Insert Float Chamber 9 Overflow Drain Line 10 Float Cover 11 Float 12 Water Level Sensor Assembly 90 1077 Note Humidifier Control setting and turn dial to the OFF position Turn off water supply Turn the integral bypass damper 3 to the SUMMER position Press the tabs in the latches on the top and bottom of front cover 1 and pull cover off base with both hands Carefully pull the plastic feed tube 2 out of the distribution tray 5 at the top of the Water Panel evaporative assembly 4 Tip the Water Panel evaporative assembly forward and lift it out of the humidifier Do not tip the Water Panel evaporative assembly more than needed to clear the housing to avoid over bending the water level sensor assembly 12 Unsnap the distribution tray 5 from the scale control insert 8 Lightly scrape out or brush off any mineral deposits being careful not to stretch or loosen the synthetic fabric liner Soaking the tray in
23. ray and replace the front cover Remove the drain line 9 from the bottom of the humidifier If applicable flex it to loosen any mineral deposits or blockage Then flush it with water under pressure If it does not properly clear replace it Slip drain line back onto the drain fitting Make sure the drain line has a constant downward slope and is not flattened or blocked 10 Turn on the water supply Return integral bypass damper to appropriate position 11 Check system operation Manual Humidifier Control Models 500M amp 600M With the furnace blower operating turn up Humidifier Control and check system operation Automatic Digital Humidifier Control Models 500A amp 600A Automatic or Manual mode Check system operation and reset Change Water Panel indicator by setting the knob to Test Reset With furnace blower operating and furnace calling for heat humidifier will operate for one minute DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE 12 Set Humidifier Control to its original position gt o gt oo so 16 ELECTRICAL SHOCK HAZARD Can cause injury or death Disconnect all electrical power supplies before servicing Shut off water supply before disconnecting or tapping into any water supply line 1 Humidifier Cover Assembly 2 Base Assembly 3 Water Panel Evaporative Assembly 4 Distribution Tray 5 V Notches 6 Water Panel Evaporator 7 Scale Control Insert
24. rilaire Humidifiers Owner s Manual For Models 350 360 400A 500A 500M 600A 600M 700A amp 700M Includes Safety amp Operating Instructions and Warranty Information READ AND SAVE THESE INSTRUCTIONS TABLE OF CONTENTS Introduction 0 anaana eaaeo rereana 1 Principle Of Operation sine sceadete carter ien a E EE aAA E 2 Operating Instructions Models 400A 500A 600A amp 700A 4 e Automatic Mode 00 00 eee 5 e Manual Mode 0 00 8 Operating Instructions Models 350 360 500M 600M amp 700M 9 Check the Humidifier Operation 000 00 naaa 9 Additional Information for All Models 000 10 Effect of Water Characteristics 0 0 000 cece eee eee ee 10 Annual Maintenance 0 000 c cece eee eee 11 Annual Summer Shutdown 0 000 0 c cece eee e eee ees 12 Periodic Preventative Maintenance 00000 eevee eee 13 MAINTENANCE INSTRUCTIONS Models 350 amp IGO h deisel ete tried owed oan nila ede 14 AY 00 E00 rat a a ninae ei poid aii 15 Models 500A amp 500M 002s 16 Models 600A amp 600M onnon nnana eener 16 Models 700A amp 700M rreran testna a 17 Limited Warranty 0 2 0 0 e ee 18 44 WARNING 120 volts may cause injury from electrical shock Disconnect power and shut off water supply before servicing 4a CAUTION Sudden operation may cause personal injury or property damage Turn th
25. sert 3 To clean the V openings of the tray it will be necessary to gently pry the distribution tray cover 4 from the tray Lightly scrape out or brush off any mineral deposits being careful not to stretch or loosen the synthetic fabric liner Soaking the tray in vinegar or a lime removing agent is helpful when trying to remove stubborn mineral deposits Slide the Water Panel evaporator 5 out from the scale control insert 3 Clean the scale control insert of mineral deposits Replace the Water Panel evaporator Stock No 35 with a Genuine Aprilaire Water Panel Slide the Water Panel back into the scale control insert 3 and snap the distribution tray cover 4 into the distribution tray 2 Then snap the distribution tray back into the scale control insert Inspect the plastic feed tube by gently flexing it and looking for cracks or signs of wear Replace tube if it is cracked brittle or has been damaged Remove the drain line from the bottom of the humidifier and flex it to loosen any mineral deposits or blockage Then flush it with water under pressure If it does not properly clear replace it Slip the drain line back onto the drain fitting 6 Make sure the drain line has a constant downward slope and is not flattened or blocked 9 Reinstall Water Panel evaporative assembly 9 and intake grille 1 10 Reconnect electrical power 7 and turn on water supply 11 Turn up Manual Humidifier Control and check system ope
26. ured by the design features of the Aprilaire humidifier All humidifier housing parts that come in contact with water are non metal and will never rust or corrode Neither heat nor water will affect them under normal operating conditions The Water Panel evaporator designed especially for uniform high evaporation and the Scale Control Insert which encases the Water Panel efficiently traps mineral deposits which are often the cause of damage to working parts in ordinary humidifiers When properly maintained no white dust will be distributed through the living quarters The Water Panel evaporator is the heart of the humidifier and must be in good condition to assure high capacity trouble free performance It should be changed at least annually with the exception of the Model 400A which should be changed twice per heating season The distribution tray incorporates a synthetic fabric liner that is designed to deliver water uniformly over the entire top surface of the Water Panel evaporator provided the humidifier is mounted level It is normal for some mineral deposits to form in the distribution tray as it dries out between humidification cycles These deposits can actually help distribute water in the tray but if they block the openings they should be removed as described in the Periodic Preventative Maintenance section of this manual Your Automatic Digital Humidifier Control works in conjunction with your furnace to control th
27. vaporator the heart of the humidifier Dry hot air is moved through the moisture laden Water Panel evaporator where natural evaporation takes place The now humidified air carrying moisture in vapor form nature s own way is circulated throughout the home Models 350 and 360 use service hot water 140 F maximum for a heat source as heat is needed for evaporation While the water going to the humidifier is hot the flushing water to the drain will be cold The heat is extracted during the evaporation process The correct water flow is determined by an orifice provided with each drain type humidifier When the humidifier is operating there will be a small steady stream of water to drain which flushes away most of the trouble causing minerals Do not use the saddle valve to regulate the water flow It is designed to be completely open or closed The minerals and solid residue not trapped by the replaceable Water Panel evaporator are flushed down the drain in the Models 350 360 500A 500M 600A 600M 700A and 700M This is the most effective and least expensive method to dispose of trouble causing minerals The drain also eliminates the problems caused by stagnant water oy a There are some homes where drain facilities are not accessible or available For these situations or where high water hardness is not a problem the Model 400A is designed to satisfy these applications Trouble free performance and minimum maintenance are ass
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