Lennox 021 - Manuals - manualsarea.com

Page 2 - Unit Dimensions; Dimension

Page 2 EDA 01/06 WARNING This cased product contains fiberglass wool. Dis-turbing the insulation during installation, mainte-nance, or repair will expose you to fiberglass wooldust. Breathing this may cause lung cancer. (Fiber-glass wool is known to the State of California tocause cancer.) Fiberglas...

Page 3 - Installation Dimensions and Arrangement; Figure 1; TYPICAL HORIZONTAL

Page 3 EDA INSTALLATION/ SERVICE INSTRUCTIONS Installation Dimensions and Arrangement Figure 1 AIR FLOW AIR FLOW UP-FLOW FURNACE UP-FLOW AIRHANDLER EDA−024B: 12−1/2 EDA−036C: 12−1/2 EDA−060D: 14 Varies by indoor coil model; see LENNOX Engineering Handbook. Varies by air handler model; see LENNOX Eng...

Page 4 - Component Functions; Charge Compensator; Figure 2; Valve Assembly; Figure 3

Page 4 EDA 01/06 Component Functions Charge Compensator The charge compensator (shown in figure 5) serves to maintain the proper amount ofrefrigerant circulating in larger systems. [Some systemsdo not require a charge compensator, but do require a simi-lar kit to connect into the system (see Enginee...

Page 5 - General Installation Information; WARNING; Refrigeration; The restrictor is provided in the bag assem-; Releasing Air Charge; NOTE − EDA units use dry air as a holding charge.; CAUTION; Refrigerant Line Connections; Electrical Wiring

Page 5 EDA INSTALLATION/ SERVICE INSTRUCTIONS General Installation Information WARNING Improper installation, adjustment, alteration, ser-vice or maintenance can cause personal injury, lossof life, or damage to property. Installation and service must be performed by aqualified installer or service a...

Page 6 - EDA Installation & Checkout Flow Chart

Page 6 EDA 01/06 Required Parts (all applications) EDA Unit, with check/flow restrictor & label Appropriate SignatureStat t Thermostat 46M98 − Outdoor Sensor 84X49 − Twisted Pair WireAppropriate Insulation and Piping Kit Required Parts (2−Stage Heat Pump appl.) 12P61 − 75VA Transformer (for HP a...

Page 7 - UPFLOW POSITION; Figure 5; TYPICAL HORIZONTAL POSITION INSTALLATION

Page 7 EDA INSTALLATION/ SERVICE INSTRUCTIONS INDOOR UNIT OUTDOOR UNIT air−flow VaporLine LiquidLine Liquid Line from Outdoor Unit Liquid Line to Indoor TXV TXV VaporLine Liquid Line MUST BE INSULATED MUST BEINSULATED EDA CHARGE COMPENSATOR 7/8 X 7/8 X3/8 TEE UPFLOW POSITION Electrical Inlet To Char...

Page 8 - Should the setscrew become; IMPORTANT! The actuator shaft; IMPORTANT

Page 8 EDA 01/06 Leak Testing, Evacuating, Charging IMPORTANT The 3−way diverting valve actuator shaft setscrew(see figure 7) is factory set and is not to be adjusted. 3−way Diverting Valve Operation NOTE − During system operation, the 3-way valve requires24-volt power to drive between cooling and d...

Page 9 - Insulating and Sealing the Unit; Other System Components; Blower Control; A SignatureStat; Figure 8

Page 9 EDA INSTALLATION/ SERVICE INSTRUCTIONS Insulating and Sealing the Unit IMPORTANT All piping, metering devices, and connections mustbe insulated to prevent moisture damage caused bysweating. Seal the unit so that warm air is not allowed into the cabi-net. This is especially important when the ...

Page 10 - EDA Unit Operation; Operation Notes; at or above; Cooling Mode; Cooling Cycle with EDA Coil Active (Model EDA−036C shown)

Page 10 EDA 01/06 EDA Unit Operation The EDA coil is added to an HVAC system downstream ofthe indoor coil. In dehumidification mode, the coil becomesan extension of the condenser coil and injects heat into theindoor air stream.This dehumidification mode allows significantly improvedcontrol of the hu...

Page 11 - Cooling Cycle with EDA Coil Inactive (Model EDA−036C shown); OUTDOOR UNIT; Heating Mode; Figure 11 illustrates refrigerant flow in the heating mode.

Page 11 EDA INSTALLATION/ SERVICE INSTRUCTIONS Cooling Mode (Dehumidification OFF) Figure 10 illustrates refrigerant flow in cooling mode (dehu-midification mode OFF), The liquid refrigerant from the outdoor unit enters the EDAmodule . Since there is no demand for dehumidification,the 3−way divertin...

Page 12 - Check List; Table 1

Page 12 EDA 01/06 Check List n Checkpoint What to Check Action Thermostat andSensor Wiring Confirm Sensor connected to SignatureStat t using twisted pair wire (see wiring diagram figure 13) Thermostat Humiditrol ® Installer Settings Confirm HUMIDITROL is enabled (see figure 8) Thermostat Humiditrol ...

Page 13 - Air Resistance; Table 2; Repair Parts; −way diverting valve assembly; Wiring Diagrams; Table 3

Page 13 EDA INSTALLATION/ SERVICE INSTRUCTIONS Air Resistance Table 2 shows air volume and total air resistance for theavailable EDA models. Table 2 Air Resistance Air Volume Total Air Resistance Model No. cfm L/s in. w.g. Pa EDA−024B 400 190 0.05 12 600 285 0.10 25 800 380 0.15 37 1000 470 0.22 55 ...