Crestron electronic 2.5, 3.5, 1.5 service manual Field, Wiring

38

Figure 7-3 Low Voltage

7 Field

BUILDING MANAGEMENT

SYSTEM

TANK THERMOSTAT

ENABLING

DEVICE

LOUVER

PROVING

SWITCH

LOUVER

RELAY

AUX

SWITCH 1

AUX

SWITCH 2

				B
				A
				SHIELD
		40	SHIELD
		39	B	CASCADE
		38	A
		37	SHIELD
1	ALARM	36	- SYSTEM PUMP
2	CONTACTS	35	+	IN
3	RUN TIME	34	-	BMS
4	CONTACTS	33	+	IN
5	TANK	32		OUTDOOR
6	THERMOSTAT	31		SENSOR
7	ENABLE	30		TANK
8		29		SENSOR
9	LOUVER	28 SYSTEM SUPPLY
10	PROVING	27		SENSOR
11	LOUVER	26 SYSTEM RETURN
12	RELAY	25		SENSOR
13	AUX	24	- BOILER PUMP
14	SWITCH 1	23	+	OUT
15	AUX	22	-	RATE
16	SWITCH 2	21	+	OUT
		20	SHIELD
		19	B	MODBUS
		18	A
		17	SHIELD

SHIELD

A FROM PREVIOUS BOILER

B

B

A TO NEXT BOILER

SHIELD

0-10V INPUT SYSTEM PUMP

OUTDOOR SENSOR

TANK SENSOR

SYSTEM SUPPLY SENSOR

SYSTEM RETURN SENSOR

0-10V OUTPUT BOILER PUMP

B MODBUS

A

SHIELD COMMUNICATION BUS

Field Wiring Connections

wiring

Installation & Operation Manual