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Disconnect electrical power before servicing. CAUTION Sudden operation may cause personal injury or property damage. Unplug the dehumidifier before servicing. READ AND SAVE THESE INSTRUCTIONS I. PRINCIPLE The purpose of the Aprilaire ® Dehumidifier is to keep reduce the unwanted effects The dehumidifier gathers system and measures the condition of can activate the HVAC blower to cycle air through the dehumidifier can also operate an optional II. OPERATING INSTRUCTIONS There are three adjustable settings: the dryness setting, the air cycle period and the air cycle time within that period. The dehumidifier can be set from “1” or “LESS DRY” to “7” or “MORE DRY” based on desired comfort level. Most installations should be initially set however this can be adjusted to your individual needs. Air cycle period and the potentiometer is used to set the air cycle time which are both under the knob and are set during installation. If the cycle period is set to 1 hour and the cycle time potentiometer is set to 20 minutes, you will get 20 minutes of air cycling every It is important to understand that the air cycling requirement – 20 minutes per hour in this example a heating, cooling, or fan call initiated by your thermostat, or if such calls do not satisfy the air cycling requirement, from a blower call initiated by the dehumidifier itself. 1. ADJUSTING THE DEHUMIDIFIER SET POINT Use the main control knob (Figure 1) on the outside of the unit to set the dehumidifier dryness setting. Start with a “NORMAL” setting for most installations. Moving the knob clockwise to “MORE DRY” will make conditions drier. Moving the knob toward “LESS DRY” allows for higher moisture levels. LESS 1 DRY Based on the thermostat set point, use the following table to determine the control knob setting to reach the desired RH value. The dehumidifier will work to MORE DRY 2 3 4 5 6 7 TEST OFF NORMAL FIGURE 1 B2203436 achieve these values. Indoor Temperature (°F) Setting Control Knob 65 70 75 80 setting of 3 - NORMAL, the dehumidifier will work to 1 - “LESS DRY” 84% 71% 60% achieve an RH value of 53%. 2 86% 73% 61% 52% NOTES: 3 - “NORMAL” 74% 63% 53% 45% 1. %RH values are ±5% and 4 64% 54% 45% 39% are to be used as a GUIDE 33% ONLY for initial set-up. 5 55% 46% 39% 28% 2. Indoor Temperature is measured at the inlet to 6 47% 39% 33% 7 - “MORE DRY” 40% 34% 28% 24% the Model 1700. %RH (± 5%) based on Control Knob Setting and Indoor Temperature EXAMPLE: At an indoor temperature of 75°F with a dehumidifier control knob 2. SETTING The air cycle period home. Detailed instructions that adjustment be made after III. OUTDOOR VENTILATION OPTION If an Aprilaire ® Normally-Closed Damper (Model 6506) was installed outside air intake, then this damper will open whenever air cycling is included into the air cycling of your indoor air. VENTILATION CONTROL LIMITS In a standard installation, your Aprilaire ® Dehumidifier will use measurements of outdoor temperature along with the user adjustable time settings to determine when to ventilate The ventilation damper will not bring in outside air if the outside temperature is The ventilation damper will allow outside air to be brought in when the temperature and 0°F only during a heat call. In timed mode, outdoor air is taken based on the time regardless of temperature. IV. MAINTENANCE AIR FILTER Under normal circumstances, the filter in the dehumidifier should be cleaned or replaced once a year. A clean filter is necessary to prevent damage to the dehumidifier and allow it to function at full capacity. To remove the filter, first unplug or disconnect power to the dehumidifier, then remove the air filter via the access panel on the side of the dehumidifier. To clean, flush with warm water and detergent solution. After a clean or new filter is reinstalled, replace the access panel and reconnect power to the dehumidifier. The replacement filter for the dehumidifier is Model 4510 and is available from your installing contractor or from most other HVAC contractors in your area. DRAIN The drain trap or outlet should be checked and cleaned of debris annually. Flush it with water under pressure to ensure opening is clear. V. LIMITED Your Research Products Corporation ® Dehumidifier is expressly installation to be free from defects. Research Products Corporation’s exclusive obligation under this warranty without charge, a replacement for the dehumidifier which later than thirty (30) days after said two Corporation, Madison, Wisconsin 53701, together 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 ONE YEAR PERIOD. RESEARCH PRODUCTS LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, OTHER THAN DAMAGES FOR PERSONAL FROM ANY BREACH OF THE AFOR...