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Fabricant : Aprilaire Taille : 688.95 kb Nom Fichier : Langue d'enseignement:

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. 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 Digital Humidifier Control installed in Manual Mode (see page 6). 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 HVAC system must be operating for the humidifier to function. Note: Turning the knob to “Test/Reset” resets the “Change Water Panel” timer. The humidifier will only operate for 1 minute in test mode. 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. 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 HVAC system must be operating for the humidifier to function. Confirm that the solenoid valve is energized and water is flowing into the humidifier (Model 400A: Floats must be down for the solenoid valve to allow water flow). - 8-- 9 ADDITIONAL INFORMATION FOR ALL MODELS ANNUAL MAINTENANCE ANNUAL MAINTENANCE Be sure to keep fireplace dampers closed when not 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 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 potentially damaging excess moisture. EFFECT OF WATER CHARACTERISTICS Your humidifier is designed to operate using hot, cold, hard or mechanically softened water. (Hot water is required for Models 350 and 360.) Water 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 deposits. In either case, the service life of a Water Panel evaporator will be the same. The Water Panel evaporator should be changed at least once a year with the exception of the Model 400A which should be changed at least twice a heating season. In the drain-equipped models, most of the mineral solids are 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 and air handler applications. 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 at least 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: • Call the installer of your Aprilaire humidifier. This information is often found on your equipment. • Call your heating and air conditioning dealer. • Use our “Dealer Locator” at: • Look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioner Contractors. • If none of the above is successful and you still need information, please feel free to write us. • Purchase only Genuine Aprilaire Water Panels to maintain performance. If your humidifier is equipped with an Automatic Humidifier Control 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 HVAC 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 CONTROL IN TEST MODE OR HUMIDIFIER WILL NOT OPERATE. WARNING RISK OF SCALDING. Water temperature over 125°F can cause severe burns and scald instantly. Shut off the hot ...

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