Carrier 48/50PD05 manual CCN Communication, Accessories

Table 3 — Application Specific Configurations

ITEM	EXPANSION	DEFAULT	UNITS	DISPLACEMENT	SINGLE ZONE
				VENTILATION	VAV
SASP	Cool Supply Air Setpoint	65	dF	65	55
FS.MX	Supply Fan Maximum Speed	100	%	100	100
FS.MN	Supply Fan Maximum Speed	20	%	20	70
FS.VM	Vent Mode Fan Speed	50	∧F	50	50
MIN.C	Min Compressor Capacity	70	%	15	70
FS.CD	Fan Speed Control Demand	3	∧F	3	3
SA.MU	SASP Maximum Reset Up	10	∧F	3	5
SA.MD	SASP Maximum Reset Down	---10	∧F	---3	---5
MP.MX	Econ Min at Max Fanspeed	30	%	30	30
PE1.C	Power Exhaust Stage 1 CFM	600	cfm	600	600
IDF.C	Indoor Fan Max Speed CFM	1600 (05)	cfm	1600 (05)	1600 (05)
		2000 (06)		2000 (06)	2000 (06)

48/50PD

System Pilot - Communication Space Sensor

Install the System Pilot and connect the CCN communication bus from it to the units CCN connection on the low voltage terminal board. Configure the unit’s CCN communication element number, bus number, and baud rate. Refer to the System Pilot’s installation instructions for configuring it to be used as a space temperature and attaching it to a unit.

Gen III TEMP Monitor - Linkage Communication

Thermostat (33CSTMT-01)

Install the linkage thermostat. Connect the CCN communication bus from the Stat to the CCN terminals on the field connection terminal board located at the unit control box. Configure the unit’s CCN communication element number, bus number, and baud rate. Refer to the Linkage Thermostat’s installation instructions for configuring the Stat and additional information about it.

Space Humidistat Control

The humidistat input is provided on the field connection terminal

board. The Space Humidity Switch configuration, Configuration→UNIT→RH.SW, identifies the normally open or normally closed status of this input at LOW humidity. Humidistat 1 terminal is the 24 VAC source for dry contact and the Humidistat 2 terminal is the signal input.

Relative Humidity Sensor Control

For units with the economizer option (with the ECB-economizer control board), the humidity sensor input is provided on the field connection terminal board. The sensor can be used in addition to or instead of a humidistat. The RH Sensor on OAQ Input configuration, Configuration→UNIT→RH.S=YES, identifies that the sensor is being used instead of an OAQ sensor. Terminal 1 is the 24vdc loop power and Terminal 4 is the 4-20 mA signal input. Refer to the Field Installed Accessories for more information.

CCN Communication

Configure Configuration→CCN→CCN.A to desired element number (Default is 1). Configure Configuration→CCN→ CCN.B to desired bus number (Default is 0). Configure Configuration→CCN→BAUD to desired code number for baud rate (Default is 3 = 9600 baud).

Accessories

Below are quick configuration settings for field installed accessories. If these accessories were installed by the factory, they will already be configured. See the Field-Installed Accessories section, third party control, control connection tables, and CCN or Display parameter tables for any accessories not mentioned below and any additional information on accessories.

Economizer

If an Economizer accessory was field installed, the unit must be configured for it by setting Configuration→ECON→EC.EN to YES. The default settings for the other economizer configurations

should be satisfactory. If they need to be changed, additional information about these configuration settings can be found in the Economizer section.

Power Exhaust

If a Power Exhaust accessory was field installed, the unit must be configured for it by setting Configuration→ECON→PE.EN to ENBL. The default settings for the other power exhaust configurations should be satisfactory. If they need to be changed, additional information about these configurations can be found in the Power Exhaust section.

Electric Heat

If an Electric Heat accessory was field installed, the unit must be configured for it by setting Configuration→HEAT→HT.TY to a value of 2. The number of electric heat stages must be configured by setting Configuration→HEAT→N.HTR per the installed heater.

Fire Shutdown

If a Fire Shutdown or Smoke Detector accessory was field installed, the unit must be configured for it by setting Configuration→UNIT→FS.SW to normally open (1) or normally closed (2) when there is not a fire alarm. Normally open (1) is the preferred configuration.

IMPORTANT: On standard units, the fire shutdown input is the terminals Fire Shutdown 1 and 2.

Outdoor Enthalpy

If an Outdoor Enthalpy accessory was field installed, the unit must be configured for it by setting Configuration→ECON→EN.SW, identifies the normally open or normally closed status of this input when the outdoor enthalpy is low.

IAQ Switch

If an IAQ Switch accessory was field installed, the unit must be configured for it by setting Configuration→AIR.Q→II.CF, identifies the normally open or normally closed status of this input when the indoor air quality value is low (good) and also selects the unit response to this input.

IMPORTANT: An IAQ switch cannot be used if an enthalpy switch is already on this input.

IAQ Sensor

If an CO2 Sensor accessory was field installed, the unit must be configured for it by setting Configuration→AIR.Q→IA.CF selects the unit response to this input. Default conversion to 0 to 2000 ppm.

OAQ Sensor

If an Outdoor Air Quality Sensor accessory was field installed, the unit must be configured for it by setting Configuration→AIR.Q →OA.CF selects the unit response to this input. Default conversion to 0 to 2000 ppm.

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