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Table 10A — DIP Switch Configuration (Version 1.0 of Unit Control Software)
SETTING 1 2 3 4 5 6 7 8
OPEN VAV
CCN/
Sensors
Expansion
I/O Board
Field
Test
ON
Modulated
Power
Exhaust
Time Guard Override
ON/ Set Min.
Damper Pos. ON
Gas Heat Factory Test ON
CLOSED CV TSTAT
Base Board
Only
Field
Test
OFF
CV
Power
Exhaust
Time Guard Override
OFF/ Set Min.
Damper Pos. OFF
Electric Heat Factory Test OFF
LEGEND
CCN — Carrier Comfort Network
CV — Constant Volume
I/O — Input/Output
POS. — Position
TSTAT — Thermostat
VAV — Variable Air Volume
NOTES:
1. The Factory Test DIP switch should not be enabled in the field.
2. The OPEN side of the DIP switch is marked ‘‘OPEN.’’ When the
rocker switch is on the ‘‘OPEN’’ side of the switch, the switch is
open.
3. If DIP switch no. 1 is open, DIP switch no. 2 is ignored, since VAV
units control to supply-air temperature.
Table 10B — DIP Switch Configuration (Version 2.0 of Unit Control Software)
SETTING 1 2 3 4 5 6 7 8
OPEN VAV
VAV — Space Sensor
Installed
Expansion
Board
Field Test
ON
VAV —
Occupied
Heat
Enabled
Time Guard Override
ON
Gas Heat
Heat Pump
Operation
CV — CCN or Sensors
Used
CV —
Modulated
Power
Exhaust
IN CONJUNCTION
WITH FIELD TEST
— Set Minimum
Damper Position
CLOSED CV
VAV — No Space Sensor
Base Control
Board Only
Field Test
OFF
VAV —
Occupied
Heat
Disabled
Time Guard Override
OFF
Electric Heat
Air Conditioner
Operation
CV — Thermostat
CV —
Constant
Volume
Power
Exhaust
LEGEND
CCN — Carrier Comfort Network
CV — Constant Volume
VAV — Variable Air Volume
NOTES:
1. The OPEN side of the DIP switch is marked ‘‘OPEN.’’ When the
rocker switch is on the ‘‘OPEN’’ side of the switch, the switch is
OPEN.
2. The configuration of DIP switches 2 and 5 are dependent on DIP
switch 1. If DIP switch 1 is set to OPEN (VAV operation), then DIP
switches 2 and 5 will configure CV functions.
3. When the unit is field-tested (DIP switch 4 to OPEN), the function
of DIP switch 6 changes andit is used to set the minimum damper
position.
Table 11A — DIP Switch Factory Settings (Version 1.0 of Unit Control Software)
UNIT 12345678
50EJ/EW Closed Closed Closed Closed Closed Closed Closed Closed
50EK/EY Open Closed Closed Closed Open Closed Closed Closed
Table 11B — DIP Switch Factory Settings (Version 2.0 of Unit Control Software)
UNIT 12345678
50EJ/EW Closed Closed Closed Closed Closed Closed Closed Closed
50EK/EY Open Closed Closed Closed Closed Closed Closed Closed
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