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 cabi- net. 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 ma- terial 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 instal- lation instruction for setting blower speed.
Thermostat and Sensor
IMPORTANT
A SignatureStatt 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.
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 SignatureStatt thermostat Installation Instructions for installation, wiring, and setup. Also refer to the SignatureStatt Thermostat Programming Guide for programming and settings.
To configure the thermostat for operation with a Humidi- trol® system, first enable HUMIDITROL in the thermostat’s installer settings (follow the path: MENU −> INSTALLER SETTINGS −> HUMIDITROL − see figure 8, A and B).
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:
STurn on Humiditrol − D & E
SSet 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 dis- connected, operation is NOT allowed in dehumidification mode. This is indicated by the display of "OUTSIDE ERR" on the SignatureStatt thermostat Home screen.
Setting Thermostat
Installer Setup
| INSTALLER SETTINGS Y |
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| HUMIDITROL | |||
| AUTO CHANGEOVER | ON |
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| EER | ON |
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| DEADBAND | 4.0°F |
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| ENABLE |
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| OFF |
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| MAIN MENU SELECT | B |
| INSTALL MENU SELECT | |||
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| User Controls | B | |||||
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| MAIN MENU |
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| DEHUMIDIFY MENU | |||||||
| PROGRAM |
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| HEAT / COOL |
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| DEHUMIDIFY | 50% | ||||
| HUMIDIFY |
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| DEHUMIDIFY |
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| HOME | SELECT |
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| MAIN MENU | SELECT | ||||||
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| DEHUMIDIFY MODE |
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| OFF |
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| MODE | HUMIDITROL | ||||
| HUMIDITROL |
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| 50% | ||
| DEHUM MENU | SELECT |
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| MAIN MENU | SELECT | ||||||
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| CONTROL |
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| MODE | HUMIDITROL | |||||
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| DEHUMIDIFY |
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| DEHUM MENU | SELECT |
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Figure 8
Page 9
EDA INSTALLATION/ SERVICE INSTRUCTIONS
