Carrier PSV A50-8441, A50-8442, Field-Supplied Sensors for Wshp Open Controller, SPT Sensors

C	Y1	a50-8441
	2	AMV
1	3	TACO VALVE
	HEATER SWITCH
C	Y1
THERMOSTAT

Fig. 30 — AMV Valve Wiring

a50-8442

Fig. 31 — Taco SBV Valve Wiring

WSHP OPEN WIRING — The WSHP Open controller will be factory mounted to the unit control panel and wired to the Complete C or Deluxe D control board, however, the system wiring will need to be completed utilizing WSHP Open con- troller wiring diagrams and the Third Party Integration (TPI) Guide. Factory installation includes harness, LWT (leaving water temperature), supply air, and condensate sensor.

WARNING

Disconnect all power to the unit before performing mainte- nance or service. Unit may automatically start if power is not disconnected. Failure to follow this warning could cause personal injury, death, and/or equipment damage.

Wiring Sensors to Inputs — Sensors can be wired to the WSHP Open controller’s inputs. See Table 7.

All field control wiring that connects to the WSHP Open con- troller must be routed through the raceway built into the corner post. The raceway provides the UL required clearance between high and low-voltage wiring.

1.Pass control wires through hole provided in corner post.

2.Feed the wires through the raceway to the WSHP Open controller.

3.Connect the wires to the removable Phoenix connectors.

4.Reconnect the connectors to the board.

Field-Supplied Sensor Hardware — The WSHP Open con- troller is configurable with the following field-supplied sen- sors. See Table 7.

Table 7 — Field-Supplied Sensors for

WSHP Open Controller

SENSOR	NOTES
Space Temperature Sensor	Field Installed (Must be used with
(SPT)	WSHP Open controller.)
Outdoor Air	Network Sensor
Temperature Sensor
Indoor Air Quality Sensor	Required only for demand
(Separate Sensor)	control ventilation.
Space Relative	Separate Sensor
Humidity Sensor

NOTE: BACview6 Handheld or Virtual BACview can be used as the user interface.

For specific details about sensors, refer to the literature sup- plied with the sensor.

Wiring a SPT Sensor — A WSHP Open controller is connect- ed to a wall-mounted space temperature (SPT) sensor to moni- tor room temperature using a Molex plug.

The WSHP Open system offers the following SPT sensors. See Table 8.

Table 8 — SPT Sensors

SENSOR	PART	FEATURES
	NUMBER
SPT	SPS	• Local access port
Standard		• No operator control
		• Slide potentiometer to adjust set point
SPT Plus	SPPL	• Manual on button to override schedule
		• LED to show occupied status
		• Local access port
		• LCD display
		• Manual on button to override schedule
SPT Pro		• Warmer and cooler buttons to adjust set point
	SPP	• Info button to cycle through zone and outside
		air temperatures, set points, and local override
		time
		• Local access port
		• LCD display
		• Manual on button to override schedule
SPT Pro		• Warmer and cooler buttons to adjust set point
	SPPF	• Info button to cycle through zone and outside
Plus		air temperatures, set points, and local override
		time
		• Local access port
		• Fan speed*

*The SPT Pro Plus fan speed adjustment has no effect in this application.

Wire SPT sensors to the WSHP Open controller’s Rnet port. An Rnetbus can consist of any of the following combinations of devices wired in a daisy-chain configuration:

•1 SPT Plus, SPT Pro, or SPT Pro Plus sensor

•1 to 4 SPT Standard sensors

•1 to 4 SPT Standard sensors and 1 SPT Plus, SPT Pro, or SPT Pro Plus sensor

•Any of the above combinations, plus up to 2 BACview6 Handheld but no more than 6 total devices

NOTE: If the Rnetbus has multiple SPT Standard sensors, each sensor must be given a unique address on the Rnetbus. See the Carrier Open Sensor Installation Guide.

Use the specified type of wire and cable for maximum signal integrity. See Table 9.

Table 9 — Rnet Wiring Specifications

RNET WIRING SPECIFICATIONS

	Description	4 conductor, unshielded, CMP,
		plenum rated cable
	Conductor	18 AWG
	Maximum Length	500 ft
	Recommended Coloring	Jacket: white
		Wiring: black, white, green, red
	UL Temperature	32 to 167 F
	Voltage	300-vac, power limited
	Listing	UL: NEC CL2P, or better
	LEGEND
AWG — American Wire Gage
CMP	— Communications Plenum Cable
NEC	— National Electrical Code
UL	— Underwriters Laboratories

To wire the SPT sensor to the controller:

1.Partially cut , then bend and pull off the outer jacket of the Rnet cable(s), being careful not to nick the inner insulation.

2.Strip about 1/4 in. of the inner insulation from each wire. See Fig. 32.

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