EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

HEAT 1

HEAT 2

COMP 1

 

COMP2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD AND

 

 

 

 

 

 

 

 

 

 

 

 

3

CONTROLLER

 

 

 

 

FAN

 

 

 

 

 

 

POWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24-VAC

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

W1

W2

Y1

Y2

G

NETWORK DO

Rc

Rh

24 VAC

24 VAC COM

 

NOT USED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W7750A

 

 

 

 

 

 

 

 

 

 

 

 

CONSTANT

 

 

 

 

 

 

 

 

 

 

 

VOLUME AHU

 

 

 

 

 

 

 

 

 

 

CONTROLLER

 

 

WALL MODULE

 

 

 

 

DI GROUND

DI GROUND

 

 

 

 

 

EARTH GROUND

LED

BYPASS

SENSOR

AI GROUND

SET PT

AI-1 OHM

AI GROUND

DI- 1

DI- 2

NOT USED

LONWORKS

BUS

LON JACK

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

J3

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

BUS

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TIME CLOCK

 

 

ORKS-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISCHARGE

 

 

 

 

 

LONW

 

 

 

 

 

 

 

AIR TEMP

 

 

 

 

 

 

9

8

7

6

5

4

3

2

1

2

JACK FOR

 

 

LED

BYPASS

SETPT

SENSOR

GND

BUS-E

BUS-E

 

 

LONWORKS-BUS

 

 

 

 

 

 

 

 

 

NETWORK

 

 

 

 

 

 

 

 

 

ACCESS

 

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.

3 LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 22.

M10085C

Fig. 27. Typical W7750A Controller AHU application wiring diagram. (For more information on note 2, refer to Fig. 25.)

HEAT 1

HEAT 2

COMP 1 COMP2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD POWER

 

 

 

 

 

 

 

FAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

24 VAC

 

LINE AC

 

 

 

 

 

 

 

 

 

 

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROLLER POWER

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24-VAC

 

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

W1

W2

Y1

Y2

G

NETWORK DO

Rc

Rh

24 VAC

24 VAC COM

 

NOT USED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W7750A

 

 

 

 

 

 

 

 

 

 

 

 

CONSTANT

 

 

 

 

 

 

 

 

 

 

VOLUME AHU

 

 

 

 

 

 

 

 

 

 

CONTROLLER

 

WALL MODULE

 

 

 

 

DI GROUND

DI GROUND

 

 

 

 

 

EARTH GROUND

LED

BYPASS

SENSOR

AI GROUND

SET PT

AI-1 OHM

AI GROUND

DI- 1

DI- 2

NOT USED

LONWORKS

BUS

LON JACK

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

J3

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

1

 

 

 

 

 

 

 

 

 

TIME CLOCK

 

 

BUS

 

 

 

 

 

 

 

 

 

 

 

 

ORKS-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISCHARGE

 

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

 

 

LON

 

 

 

 

 

 

 

AIR TEMP

 

 

 

 

 

9

8

7

6

5

4

3

2

1

2

JACK FOR

 

 

LED

BYPASS

SETPT

SENSOR

GND

BUS-E

BUS-E

 

 

LONWORKS-BUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NETWORK

 

 

 

 

 

 

 

 

 

ACCESS

 

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.

M10084C

Fig. 28. Typical W7750A Controller with separate

transformer application wiring diagram.

(For more information on note 2, refer to Fig. 25.)

74-2958— 1

38

Page 38
Image 38
Honeywell W7750A specifications Constant Volume AHU Controller