ION SYST0101CW - 6.3.2.2. Altitude; 6.3.2.3. Dehumidification Options; 6.3.2.4. Fan Coil G-Terminal Input

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6.3.2.2. Altitude
• Static Pressure selection: 0 to 10,000 ft. This is used to correct the static pressure readings
the system performs.
NOTE: This feature is only available with specific ICP communicating indoor units. See the
Ion System Control Product Data for compatible units and more information.
6.3.2.3. Dehumidification Options
The Dehum Drain Time option turns off the continuous fan at the end of cooling for fifteen
minutes in order to drain the indoor coil of water. The fan will only be turned off if a dehumidify
demand existed at the start of or during the cooling cycle.
The Electric Reheat option (fan coils, only) enables the electric heat to be used while
cool-to-dehumidify is running. This will allow the cool-to-dehumidify function to run longer,
greatly improving humidity control in cooling mode. Accumulated electrical energy used while
reheating (in kilowatt-hours) is shown on the Fan Coil Run Hours screen and can be reset there.
This option is only available with fan coil systems. Self-identifying (staging) heaters provide
the best performance for re-heat dehumidification. For reheat applications, 9kW heaters provide
the best performance. The reheat algorithm functions along with the overcool algorithm. If the
room temperature is low enough that overcooling is not allowed, reheat will not be allowed.
Overcooling must happen before the electric heaters are energized.
After the selections are made, touch SAVE.
• Dehum Drain Time: Adjustable from 5 to 60 minutes or OFF. Default = 15 minutes
• Electric Reheat: Yes or No. Default = No
6.3.2.4. Fan Coil G-Terminal Input
This setup option selects desired operation when the R to G contact is closed on the fan coil
control board. Under this function option, fan turns on fan to selected fan speed when G
terminal is energized. Use the alert function to select the contact state for an alert. Select
Normally Open or Normally Closed, and then save your selection. Shutdown shuts off fan and
equipment when initiated. After the selections are made, touch Save.
• Shutdown:
– Normally Open
– Normally Closed
– The shutdown function may not be immediate. Blower off delays, etc., will still be used.
The shutdown is not intended for commercial applications. If immediate shutdown is
required, provision must be made to remove power to indoor unit.