Honeywell W7750A specifications W7750C Constant

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

WINDOWS CONTACTS (CONTACTS CLOSED EQUALS WINDOW CLOSED)

OCCUPANCY SENSOR (CONTACTS CLOSED EQUALS OCCUPIED)

														+
														24-VAC
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
DI-4	DI GROUND	DI-3	DI-2	DI GROUND	DI-1	24 VAC	VAC COM	OUT 1	OUT 2	OUT 3	OUT 4	OUT 5	OUT 6	OUT 7	OUT 8
							24
						3
								TRIAC EQUIVALENT CIRCUIT
W7750B CONSTANT
VOLUME AHU
CONTROLLER
	WALL MODULE						GROUND			GROUND		20 VDC OUT
EARTH GROUND	LED	BYPASS	SENSOR	GROUND	SET PT	AI-1 OHM		AI-2 OHM	AI-3 V/mA		AI-4 V/mA		LONWORKS	BUS	LON JACK
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	J3
													2		BUS
1							HUMIDITY
							(4 TO 20 MA)
															ORKS-
							C7600C		+
															W
									–						LON

TWO - OR

TWO - OR

ECONOMIZER

THREE-WAY

THREE-WAY

DAMPER

CHILLER

HOT WATER/

WATER VALVE

STEAM VALVE

FAN

SERIES 70

SERIES 70

VALVE

VALVE

ML7161

3

ACTUATOR

ACTUATOR

24

IN-

24

IN-

2-10

4-20

COM

24

V

+

mA

-

T2

Vac

Vac

COM

PUT

Vac

COM

PUT

+

T1

+

24 Vac

-

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
DI-4	DI GROUND	DI-3	DI-2	DI GROUND	DI-1	24 VAC	VAC COM	OUT 1	OUT 2	OUT 3	OUT 4	OUT 5	AO 1	AO 2	AO 3
							24
								TRIAC EQUIVALENT
W7750C CONSTANT									CIRCUIT
VOLUME AHU
CONTROLLER
	WALL MODULE											20 VDC OUT
EARTH GROUND	LED	BYPASS	SENSOR	AI GROUND	SET PT	AI-1 OHM	AI GROUND	AI-2 OHM	AI-3 V/mA	AI GROUND	AI-4 V/mA		LONWORKS	BUS	LON JACK
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	J3
								DISCHARGE					2		BUS
								AIR TEMP
															ORKS-
1
															LONW

9	8	7	6	5	4	3	2	2
								1
		LED	BYPASS	SET PT	SENSOR	GND	E-BUS	E-BUS
	T7770C
	WALL
	MODULE

JACK FOR

LONWORKS-BUS NETWORK ACCESS

9	8	7	6	5	4	3	2	2
								1
		LED	BYPASS	SET PT	SENSOR	GND	E-BUS	E-BUS
	T7770C
	WALL
	MODULE

JACK FOR

LONWORKS-BUS NETWORK ACCESS

1 EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2)

1EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.

USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

2TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

3WIRING DIAGRAM SHOWS JUMPER (FOR J2) IN FACTORY DEFAULT HIGH-SIDE POSITION.

M11619B

Fig. 34. W7750B,C wiring diagram with C7600C 4 to 20 mA solid state humidity sensor. (For more information on note 2, refer to Fig. 25.)

WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

2 TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

3 IF AN ANALOG OUTPUT DEVICE HAS A SIGNAL COM (-) TERMINAL, CONNECT IT TO THE 24 VAC COM TERMINAL NUMBER 24.

M16417B

Fig. 35. W7750C Controller with 4-to-20 mA heating, cooling and economizer wiring diagram. AOs must use terminals 16, 17 or 18. The AOs can be set to be reverse acting. (For more information on note 2, refer to Fig. 25.)

See Fig. 36 or 37 to wire a pneumatic transducer to a W7750B or W7750C.

74-2958— 1 42