EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
39 74-2958—1
Fig. 29. W7750A Controller floating economizer damper
wiring diagram. (For more information on note 2, refer to
Fig. 25.)
NOTE: Di
ital outputs are confi
urable. The terminal
locations for each function are user-selectable. The
Network DO is confi
ured to be economizer float
close in this fi
ure and W2 is confi
ured to be
economizer float open. Ph
sical output terminal
features are done in E-Vision b
the custom wirin
function.
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W7750A
CONSTANT
VOLUME AHU
CONTROLLER
1
2
2
1
2
3
EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.
USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM
2
)
WITH A MINIMUM OF 18 AWG (1.O MM
2
), FOR EARTH GROUND WIRE.
TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED
TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.
LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 22.
LONWORKS-BUS
EARTH
GROUND
JACK FOR
L
ONWORKS-BUS
NETWORK
ACCESS
7 69 8 54321
T7770C
WALL
MODULE
SET PT
GND
SENSOR
BYPASS
LED
E-BUS
E-BUS
9 101112 14 J315
31 30 29 28 27 26 25 24 23 22 21 20
WALL MODULE
SET PT
SENSOR
BYPASS
LED
NOT USED
19 18 17 16
AI-1 OHM
DI- 1
DI- 2
13
TIME CLOCK
M10083C
DISCHARGE
AIR TEMP
24 VAC
24 VAC COM
Rc
Rh
NETWORK
DO
W1
W2
Y1
Y2
G
24 VAC
+
-
3
LOAD AND
CONTROLLER
POWER
NOT USED
ML6161 FLOATING
ACTUATOR
CW COM CCW
HEAT 1
AI
GROUND
AI
GROUND
DI
GROUND
DI
GROUND
LON
JACK
L
ONWORKS
BUS
