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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
53 74-2958—1
Common Operations
The Excel 10 W7750 Controller applications have man
y
common operations that are applicable re
g
ardless of the t
y
pe
of heatin
g
, coolin
g
, or economizer e
q
uipment confi
g
uration.
These operations are available to the W7750A and the
W7750B,C Versions of the CVAHU Controller, and the I/O and
network confi
g
urations for them are summarized in Table 14.
Available input options are from the wall module and the
hard-wired analo
g
and di
g
ital inputs. Each application can
have onl
y
a subset of these devices confi
g
ured based on the
number of ph
y
sical I/O points available. However, some of the
inputs are available over the L
ON
W
ORKS
Bus network.
NOTE: Each W7750 Controller
must
have a space
temperature sensor input either wired directl
y
to the
controller, or shared from another L
ON
W
ORKS
Bus
device, and must have a di
g
ital output confi
g
ured for
controllin
g
the suppl
y
fan. In addition, if modulatin
g
economizer control is desired, a dischar
g
e air
temperature sensor
must
be ph
y
sicall
y
connected to
the Excel 10 W7750 Controller. A dischar
g
e
temperature si
g
nal
cannot
be brou
g
ht into the
controller throu
g
h the L
ON
W
ORKS
Bus network.
Table 14. Common Configuration Options Summary For W7750A,B,C Controllers.
Option Possible Configurations Common To All W7750 Models
Supply Fan
1. Mandator
y
Di
g
ital Output.
Type of Air Handler
1. Conventional.
2. Heat Pump.
Occupancy Sensor
1. None.
2. Connected: Contacts closed e
q
uals Occupied.
3. Network
(
Occ/Unocc si
g
nal received via the L
ON
W
ORKS
Bus network
)
.
Window Sensor
1. None.
2. Ph
y
sicall
y
Connected: Contacts closed e
q
uals window closed.
3. Network
(
Window Open/Closed si
g
nal received via the L
ON
W
ORKS
Bus
)
.
Wall Module Option
1. Local
(
direct wired to the controller
)
.
(
The T77560A,B has no L
ON
W
ORKS
Bus access
)
2. Network
(
sensor value received via the L
ON
W
ORKS
Bus
)
.
Wall Module Type
1. Sensor onl
y
.
(
All wall modules have a L
ON
W
ORKS
Bus access 2. Sensor and Setpoint ad
j
ust.
j
ack except T7560A,B
)
3. Sensor, Setpoint ad
j
ust and B
y
pass.
4. Sensor and B
y
pass.
Smoke Emergency
Initiation
1. None.
2. Ph
y
sicall
y
Connected: Contacts closed e
q
uals smoke detected.
3. Network
(
Emer
g
enc
y
/Normal si
g
nal received via the L
ON
W
ORKS
Bus
)
.