Honeywell W7750A specifications Wall

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

				HEAT	HEAT
	COOL	COOL	COOL COOL STAGE 2		STAGE 1
FAN STAGE 4		STAGE 3	STAGE 2 STAGE 1

				4
																+
																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						AI GROUND					20 VDC OUT
EARTH GROUND	LED	BYPASS	SENSOR	AI GROUND	SET PT	AI-1 OHM		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-
																LONW

TWO - OR THREE-WAY	TWO - OR THREE-WAY	ECONOMIZER
CHILLER WATER VALVE	HOT WATER/STEAM VALVE	DAMPER
SERIES 60	SERIES 60
VALVE ACTUATOR	VALVE ACTUATOR

STEM

STEM

STEM

STEM

SERIES 60

UP

COM

DOWN

UP

COM

DOWN

ACTUATOR

CW

COM

CCW

+

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

AI GROUND

AI GROUND

20 VDC OUT

EARTH GROUND

LED

BYPASS

SENSOR

AI 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-

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

DISCHARGE	W
AIR TEMP	ON
	L

9	8	7	6	5	4	3	2	1	2
									JACK FOR
		LED	BYPASS	SET PT	SENSOR
						GND	E-BUS	E-BUS	LONWORKS-BUS
									NETWORK
									ACCESS

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.

4ISOLATING RELAYS MUST BE USED WHEN CONNECTING TO STAGED HEAT/COOL EQUIPMENT.

M10082D

Fig. 30. Typical W7750B Controller with staged heating and cooling wiring diagram. (For more information on note 2, refer to Fig. 25.)

T7770C

WALL

MODULE

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. M10081C

Fig. 31. W7750B Controller with floating heating, cooling and economizer wiring diagram. (For more information on note 2, refer to Fig. 25.)

74-2958— 1 40