Carrier 50EY, 50EJ, 50EW, 50EK installation instructions Setting

Table 10A Ð DIP Switch Con®guration (Version 1.0 of Unit Control Software)

SETTING	1	2	3	4	5	6	7	8
OPEN		CCN/	Expansion	Field	Modulated	Time Guard Override
	VAV			Test	Power	ON/ Set Min.	Gas Heat	Factory Test ON
		Sensors	I/O Board
				ON	Exhaust	Damper Pos. ON
CLOSED			Base Board	Field	CV	Time Guard Override
	CV	TSTAT		Test	Power	OFF/ Set Min.	Electric Heat	Factory Test OFF
			Only
				OFF	Exhaust	Damper Pos. OFF

		LEGEND
CCN	Ð Carrier Comfort Network
CV	Ð Constant Volume
I/O	Ð	Input/Output
POS.	Ð	Position
TSTAT	Ð Thermostat
VAV	Ð Variable Air Volume

NOTES:

1.The Factory Test DIP switch should not be enabled in the ®eld.

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 Ð DIP Switch Con®guration (Version 2.0 of Unit Control Software)

SETTING	1	2	3	4	5	6	7	8
					VAV Ð
		VAV Ð Space Sensor			Occupied	Time Guard Override
		Installed			Heat	ON
OPEN	VAV		Expansion	Field Test	Enabled		Gas Heat	Heat Pump
			Board	ON	CV Ð	IN CONJUNCTION		Operation
		CV Ð CCN or Sensors			Modulated	WITH FIELD TEST
		Used			Power	Ð Set Minimum
					Exhaust	Damper Position
					VAV Ð
		VAV Ð No Space Sensor			Occupied
					Heat
			Base Control	Field Test	Disabled	Time Guard Override		Air Conditioner
CLOSED	CV				CV Ð		Electric Heat
			Board Only	OFF		OFF		Operation
					Constant
		CV Ð Thermostat			Volume
					Power
					Exhaust

LEGEND

CCN Ð Carrier Comfort Network

CV Ð Constant Volume

VAV Ð 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 con®guration 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 con®gure CV functions.

3.When the unit is ®eld-tested (DIP switch 4 to OPEN), the function of DIP switch 6 changes and it is used to set the minimum damper position.

Table 11A Ð DIP Switch Factory Settings (Version 1.0 of Unit Control Software)

UNIT	1	2	3	4	5	6	7	8
50EJ/EW	Closed	Closed	Closed	Closed	Closed	Closed	Closed	Closed
50EK/EY	Open	Closed	Closed	Closed	Open	Closed	Closed	Closed

Table 11B Ð DIP Switch Factory Settings (Version 2.0 of Unit Control Software)

UNIT	1	2	3	4	5	6	7	8
50EJ/EW	Closed	Closed	Closed	Closed	Closed	Closed	Closed	Closed
50EK/EY	Open	Closed	Closed	Closed	Closed	Closed	Closed	Closed

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