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Anleitung Zusammenfassung
PUSH RED TAB IN DIRECTION INDICATED. 2. PUSH ACTUATOR SHAFT DOWN TOWARD THE CENTER.OF.TRAVEL POSITION (see figure 7). IMPORTANT! The actuator shaft must be set as described to allow the EDA to evac-5. The charge must be checked with the system in cooluate more quickly. ing operation (dehumidification OFF). After testing 2. Refer to instructions provided with the outdoor unit for and charging as required, set the thermostat to force leak testing, evacuating and charging procedures. a demand for dehumidification. Page 8 EDA 01/06 Insulating and Sealing the Unit IMPORTANT All piping, metering devices, and connections must be insulated to prevent moisture damage caused by sweating. Seal the unit so that warm air is not allowed into the cabinet. This is especially important when the unit is installed in an unconditioned area. Make sure the liquid line entry points are sealed with either refrigerant tube insulating material or with Permagum (see figure 5 on page 7). Other System Components Blower Control EDA units are to be applied with an indoor unit that has a variable speed motor (VSM). Refer to the indoor unit installation instruction for setting blower speed. Thermostat and Sensor IMPORTANT A SignatureStat. thermostat and properly- connected outdoor sensor is REQUIRED for the EDA unit to function properly. Twisted pair wire (84X49 or equivalent) is REQUIRED between the SignatureStat and the outdoor sensor. Then, select HUMIDITROL mode from the DEHUMIDIFY menu (follow the path: MENU .> DEHUMIDIFY). The user control sequence is also shown in figure 8, C through H; specifically: . Turn on Humiditrol . D & E . Set level of dehumidification . F through H (adjustment range is from 45% to 60% and is factory set to 50%) If HUMIDITROL is enabled and the outdoor sensor is disconnected, operation is NOT allowed in dehumidification mode. This is indicated by the display of "OUTSIDE ERR" on the SignatureStat. thermostat Home screen. Setting Thermostat Installer Setup INSTALLER SETTINGS . HUMIDITROL AUTO CHANGEOVER ON EER ON DISABLE DEADBAND 4.0°F ENABLE HUMIDITROL OFF MAIN MENU SELECT . INSTALL MENU SELECT MAIN MENU PROGRAM HEAT / COOL HUMIDIFY v DEHUMIDIFY HOME SELECT DEHUMIDIFY MENU MODE OFF DEHUMIDIFY 50% MAIN MENU SELECT DEHUMIDIFY CONTROL ^ v DEHUM MENU SELECT 50 % User Controls DEHUMIDIFY MODE OFF HUMIDITROL DEHUM MENU SELECT DEHUMIDIFY MENU MODE HUMIDITROL DEHUMIDIFY 50% MAIN MENU SELECT DEHUMIDIFY MENU MODE HUMIDITROL DEHUMIDIFY 55% MAIN MENU SELECT A B C D E F G H Install the remote sensor on the outside of a northern wall of the home, away from direct sunlight or other heat sources that may affect its sensitivity. Refer to the SignatureStat thermostat Installation Instructions for installation, wiring, and setup. Also refer to the SignatureStat. Thermostat Programming Guide for programming and settings. To configure the thermostat for operation with a Humiditrol ®system, first enable HUMIDITROL in the thermostat’s installer settings (follow the path: MENU .> INSTALLER Figure 8 SETTINGS .> HUMIDITROL . see figure 8, A and B). Page 9 EDA INSTALLATION/ SERVICE INSTRUCTIONS EDA Unit Operation Cooling Mode (Dehumidification ON) The EDA coil is added to an HVAC system downstream of the indoor coil. In dehumidification mode, the coil becomes an extension of the condenser coil and injects heat into the indoor air stream. This dehumidification mode allows significantly improved control of the humidity in the conditioned space without overcooling the space. The assembly includes a set of 3.way diverting valves which will either route refrigerant through the EDA coil, or cause the refrigerant to bypass the EDA coil, depending on the mode of operation. Operation Notes 1. IMPORTANT REMINDER! Dehumidification will not occur when the outside temperature is at or above 95.F. 2. When operating in cooling (or heat pump heating) mode, all temperatures and pressures will be as in a normal system. 3. When the thermostat is in HUMIDITROL mode, and after a cooling demand has been satisfied but a dehumidification demand persists and the room temperature is not more than 2°F below the setpoint, the air handlers will operate at reduced airflow with the compressor at high speed. 4. When the unit is in the dehumidification mode, the display will show a raindrop" icon with an imbedded negative sign and the current relative humidity to its right. If the room thermostat’s cooling demand has been satisfied but the dehumidification setting has not been satisfied, the unit continues to run in dehumidification mode. The room thermostat sends a signal to the EDA unit’s 3.way diverting valve assembly to begin operating in the dehumidification mode. Figure 9 shows refrigerant flowing from the outdoor unit, entering the EDA, passing through the first 3.way diverting valve, then entering the EDA coil. There, heat from the warm refrigerant is transferred into the indoor air stream. The refrigerant exits the coil through the second 3.way diverting valv...
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