OPERATING INSTRUCTIONS – MODELS 350, 360, 500M, 600M & 700M FIGURE C – Manual Humidifier Control 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. With the Manual Humidifier Control, it is important to anticipate a drop in outdoor temperature and reduce the setting accordingly to avoid excessive condensation, just as with the Automatic Dig

5. Remove Water Panel evaporator (5) from the Scale Control Insert (3). Scrape the Insert with a putty knife or similar tool and flush clean with water. Install new Water Panel evaporator (Stock No. 35) with black colored spot up. Snap plastic cover into tray and tray into Scale Control Insert. 6. Remove the drain hose from the bottom of the unit and bend and flex it to loosen the internal calcium deposits. Then flush it with water under pressure and slip it back onto the black drain fitting (6)

61000651B 8400 Tstat Owners.indd 3 7/23/09 10:43:02 AM AbOUT yOUR NEw THERmOSTAT – NON-pROgRAmmAblE mODElS AbOUT yOUR NEw THERmOSTAT – NON-pROgRAmmAblE mODElS CONTROlS & DISplAy OVERVIEw – mODElS 8444, 8446, 8448 CURRENT INDOOR TEMPERATURE SySTEM MODE SETTINg SySTEM MODE (PAgE 6) FAN SETTINg (PAgE 7) FAN SETTINg BATTERy DOOR OUTDOOR TEMPERATURE (OPTIONAL) TEMPERATURE SETTINg EQUIPMENT STATUS UP DOWN HEAT pUmp mODElS ONly EMERgENCy HEAT (RED) SySTEM FAULT (yELLOW) INDICATOR SHOWS THROUgH HOUSINg

• To upgrade both PCBs and the software use a PCB service upgrade kit. The part numbers to order are as follows: Model Part number Model Part number MR480 043040791 MR720 043040793 MR700 043040792 MR730 043040794 • For humidifiers with Rev F or later PCBs, you will only be required to purchase individual boards for repairs (as detailed in sect. 8.9). • If a revision H or later power PCB needs replacing, the replacement power PCB must also be revision H or later. Replacing revision F or earlier p

1.DisconnectelectricalpowertotheHVACandshutoffwatersupply. 2.Disconnectthewaterlineattheinletcompressionnut. 3.Removethein-linestrainerfrominsidetheinletsideofthevalvebyusingasmallnailorwire. 4.Flushthein-linestrainercleanorreplacewithanewstrainer,PartNo.4004.5.Reconnecttheinletwaterline.DoubleWrenchtoPreventLeaking. 6.Disconnectthewaterfeedtubeattheoutletcompressionnut. 7.Inspectthewaterfeedtubebygentlyflexingitandlookingforcracksorsignsofwear.Replacetubeifitiscracked,brittle, orhasbeendamaged.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Materials Provided and Not Provided . . . . . . . . . . . . . . . . . . 3 Electrical Specifications, Capacities and Weights . . . . . . . . 4 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Overview of Humidifier Operation . . . . . . . . . . . . . . . . . . . . . 7 INSTALLATION Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Setting Slide Switches. . . . . .

Float Cover 11. Float 12. Water Level Sensor Assembly 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 tabs in the latches on the top and bottom of front cover (1) and pull cover off base with both hands. 4. 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 assemb

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. CHECKTHEHUMIDIFIEROPERATION 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 HVAC system must be operating for the humidifier to function. Note: Turning the knob to “Test/Reset” resets the “Change Water Panel” timer. The humidi

. . . .4 •AutomaticMode ..........................................5 •ManualMode ............................................6 Operating Instructions – Models 350, 360, 500M, 600M & 700M . . . . . .9 Checkthe Humidifier Operation ..................................9 AdditionalInformationforAllModels ............................10 EffectofWaterCharacteristics .................................10 AnnualMaintenance .........................................11 AnnualSummerShutdown ......................

The dehumidifier measures the condition of the house air to decide when to run. INSTALLER–PLEASENOTE! 1. INSTALLATION MUST CONFORM TO ALL APPLICABLE STATE OR LOCAL CODES. 2. A DEDICATED 15 Amp circuit is required for proper operation of the dehumidifier. If a dedicated circuit is not available, use a lightly loaded circuit. Do not use an extension cord. 3. For protection of the compressor, unit must be transported and installed in an upright position. If the unit was shipped or stored on its sid