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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
13 74-2958—1
Fig. 4. W7750A construction in in. (mm).
PERFORMANCE SPECIFICATIONS
Power:
24 Vac with a minimum of 20 Vac and a maximum of 30 Vac at
either 50 or 60 Hz. The W7750A power consumption is 6 VA
maximum at 50 or 60 Hz. The W7750B,C power consumption
is 12 VA maximum at 50 or 60 Hz.The W7750A,B,C is a NEC
Class 2 rated device. This listin
g
imposes limits on the amount
of power the product can consume or directl
y
control to a total
of 100 VA.
Special Note for the W7750B,C Unit:
The individual Triac outputs incorporate an internal common
connection with the input power transformer. The Triacs
provide a switched path from the hot side
(
R
)
of the
transformer throu
g
h the load to the common of the
transformer. The W7750B,C Controller desi
g
n
must
use the
same power transformer for an
y
loads connected to that
controller; see Fi
g
. 30.
Each individual Triac is rated 1A at 30 Vac maximum. Under
all operatin
g
conditions, the maximum load/source power
bud
g
et for the W7750B,C Controller is 100 VA. Actual
allowable Triac current is 500 mA MAX.
123456789101112131415J3
E
GND
LED BYPASS SNSR GND SET PT AI-1
OHM
GND DI-1 GND GND DI-2 NOT
USED
L
ON
W
ORKS
BUS
LON
JACK
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
WI W2 Y1 Y2 G
NEYWORK
DO
Rc Rh
24
VAC
5-3/16 (132)
5-5/8
(143)
3-1/16
(77)
2-1/8
(54)
6 (152)
M10098B
24
VAC
COM
NOT
USED
NOT
USED
NOT
USED
NOT
USED
NOT
USED