Carrier 50MP62L-10R, MPE62L-10R, 48MPD specifications Ð Set Point Ranges and Defaults

If the unit is being used in a CV application, then perform the following:

1.Enter the con®guration function by pressing and

.

2.Scroll down to unit type. TYPE 1 will be displayed.

3.Press and ENTER to change the unit type to CV.

4.Scroll down to data reset. DTRS will be displayed. Press

and ENTER to save changes.

The fan operation type should also be con®gured for use in occupied time periods. Fan operation can be

set to continuous or auto. To set, press to enter the subfunction. Scroll down to fan mode (FANM). Press

and	ENTER	to set to AUTO. Press	and	ENTER	to set
to continuous.

ENTER JOB SET POINT VALUES Ð The set point func- tion allows the user to view the current values set for the unit. From this function, the user can change the values.

Reading and Changing Set Points Ð To change the set point of a particular feature, enter the appropriate subfunction and scroll to the variable desired. Once the desired variable has

been reached, type in the new value and press ENTER . The new value will appear in the display.

For example, the occupied cool set point is currently set at the default value of 78 F. To change the occupied set point to 72 F:

1.Press to enter the occupied cool set point function. The display will read OCSP 78.

2.Press ENTER and the display will read OCSP 72.

Set points can be changed by the user provided that the values are within the allowable range for the input. If the input is not within the allowable range, the original value will remain displayed. See Table 24 for allowable ranges and default values.

To change the demand limit set points, the functions must ®rst be enabled in the ®eld con®guration subfunction.

CONFIGURE UNIT CONTROLS AND FUNCTIONS Ð Refer to Table 25 for a suggested sequence for entering Basic System Con®guration data. These values may be changed from the HSIO at any time. If changing default values via the CCN, the 48/50MP unit must ®rst be in run mode (STBY NO).

NOTE: After changing any of the values in the con®guration group, enable the Data Reset function.

QUICK TEST FUNCTION Ð Enable and run the Quick Test function. Refer to the Controls and Troubleshooting manual for more information on Quick Test.

Table 24 Ð Set Point Ranges and Defaults

	DISPLAY	SET POINT	DEFAULT	ALLOWABLE
		DESCRIPTION	VALUE	RANGE
	BPSP	Building pressure set point	0.05 in. wg	0 to .50 in. wg
	ECSO*	Economizer set point offset	3	1 to 10
	HHL²/HHOR*	High humidity override (percent)	99%	0 to 100%
	HTMP	High temperature minimum position	35 F	0 to 100 F
	HUSP	Humidity set point (percent)**	40%	0 to 100%
	IAQS²	IAQ set point	650 ppm	0 to 2000 ppm
	LIMT²	Reset limit (F)	10 F	0 to 20 F
	LSP	Loadshed set point (percent)	50%	0 to 100%
	LTMP	Low temperature minimum position	10 F	0 to 100 F
	MDP²	Minimum damper position (percent)	20%	0 to 100%
	NTLO²	NTFC lockout temperature (F)	50 F	40 to 70 F
	OLS²/OACS*	Outdoor-air cfm set point	1 cfm	0 to 50,000 cfm
	OCSP	Occupied cool set point (F)**	78 F	55 to 80 F
	OHSP	Occupied heat set point (F)**	68 F	55 to 80 F
	PES²	Power exhaust on set point (percent)	90%	30 to 100%
	RTIO²	Reset ratio (F)	3 F	0 to 10 F
	SASP	Supply air set point (F)	55 F	45 to 70 F
	SPSP	Static pressure set point²²	1.5 in. wg	0 to 5.0 in. wg
	UCDB*	Unoccupied cooling deadband	1	0 to 10
	UCSP	Unoccupied cool set point (F)**	90 F	75 to 95 F
	UHDB*	Unoccupied heating deadband	1	0 to 10
	UHSP	Unoccupied heat set point (F)**	55 F	40 to 80 F
	LEGEND
IAQ	Ð Indoor-Air Quality
NFTC	Ð Unoccupied Free Cooling
ppm	Ð Parts Per Million

*These items are found under the Service function, and can only be accessed using either the Build- ing Supervisor or Service Tool.

²These items are found under the Service function. **Occupied space.

²²Supply duct.

NOTE: Set points HHL/HHOR and OCS/OACS are displayed differently on the HSIO and Building Su- pervisor. The set points are shown as HHL and OCS on the HSIO. The set points are shown as HHOR and OACS on Building Supervisor or Service Tool.

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