Honeywell W7750A specifications Economizer Damper PWM Actuator Power Signal

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

ECONOMIZER

DAMPER

PWM ACTUATOR

4

POWER

SIGNAL

24V

COM

24V

SIG

+

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

ORKS-

DISCHARGE

W

LON

AIR TEMP

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											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
													2		BUS
1
															ORKS-
				DISCHARGE											LONW
								OUTDOOR
				AIR TEMP
								ENTHALPY			RETURN
											ENTHALPY

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)

1 EARTH 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.

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

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

4 FOR WIRING DETAILS FOR PWM DEVICES, REFER TO DOCUMENTATION

INCLUDED WITH PWM DEVICES.

M10080C

Fig. 32. W7750B,C Controller PWM damper actuator

wiring diagram. (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	WIRING DIAGRAM SHOWS JUMPER (FOR J2) IN FACTORY DEFAULT

HIGH-SIDE POSITION. M10079C

Fig. 33. W7750B,C wiring diagram with 4 to 20 mA enthalpy sensors and digital inputs. (For more information on note 2, refer to Fig. 25.)

41 74-2958— 1