Carrier Air Conditioner specifications Example of Temperature Reset Return Fluid Configuration

Table 16 — Configuration Mode and Sub-Mode Directory (cont)

SUB-MODE	KEYPAD	ITEM	MARQUEE	NAVIGATOR	ITEM EXPANSION		COMMENT
	ENTRY		DISPLAY RANGE	DISPLAY RANGE
SLCT	ENTER	CLSP	0 - 5	DUAL SWITCH	COOLING SETPOINT	Default: 0
				DUAL 7 DAY	SELECT	0	= Single
				DUAL CCN OCC		1	= Dual Switch
				4-20 INPUT		2	= Dual 7 Day
				EXTERNAL POT		3	= Dual CCN Occupancy
						4	= 4-20 Input
						5	= Set Point Potentiometer
		HTSP	0 - 4	0 - 4	HEATING SETPOINT SELECT	Not Supported
		RL.S	ENBL-DSBL	ENBL-DSBL	RAMP LOAD SELECT	Default: DSBL
		CRMP	0.2 - 2.0° F	0.2 - 2.0° F	COOLING RAMP LOADING	Default: 1.0
			(0.1 - 1.1° C)	(0.1 - 1.1° C)
		HRMP	0.2 - 2.0° F	0.2 - 2.0° F	HEATING RAMP LOADING	Not Supported
			(0.1 - 1.1° C)	(0.1 - 1.1° C)
		HCSW	COOL-HEAT	COOL-HEAT	HEAT COOL SELECT	Not Supported
		Z.GN	1.0 - 4.0	1.0 - 4.0	DEADBAND MULTIPLIER	Default: 1.0

Table 17 — Example of Temperature Reset (Return Fluid) Configuration

SUB-MODE	KEYPAD	ITEM	DISPLAY	ITEM EXPANSION	COMMENT
	ENTRY
RSET	ENTER	CRST	0	COOLING RESET TYPE	0 = No reset
					1 = 4 to 20 mA input
					2 = Outdoor Air Temp
					3 = Return Fluid
					4 = Space Temperature
	ENTER		0		Scrolling stops
	ENTER		0		Value flashes
			3		Select 3
	ENTER		3		Change accepted
	ENTER	CRST	3		Item/Value/Units scrolls again
		CRT1	125	NO COOL RESET TEMP	Range: 0° to 125 F
	ENTER		125		Scrolling stops
	ENTER		125		Value flashes
			10		Select 10
	ENTER		10		Change accepted
	ESCAPE	CRT1	10		Item/Value/Units scrolls again
		CRT2	0	FULL COOL RESET TEMP	Range: 0° to 125 F
	ENTER		0		Scrolling stops
	ENTER		0		Value flashes
			2		Select 2
	ENTER		2		Change accepted
	ESCAPE	CRT2	2		Item/Value/Units scrolls again
		DGRC	0	DEGREES COOL RESET	Range: –30 to 30 F
	ENTER		0		Scrolling stops
	ENTER		0		Value flashes
			8		Select 8
	ENTER		8		Change accepted
	ESCAPE	DGRC	8		Item/Value/Units scrolls again

NOTE: The example above shows how to configure the chiller for temperature reset based on chiller return fluid. The chiller will be configured for no reset at a cooler ∆T (EWT-LWT) of 10 F (5.6 C) and a full reset of 8 F (4.4 C) at a cooler ∆T of 2 F (1.1 C).

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