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SYSTEM ENGINEERING
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® U.S. Re
g
istered Trademark
Cop
y
ri
g
ht © 2000 Hone
y
well Inc. • All Ri
g
hts Reserved
Excel 10
W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
Contents
Introduction .................................................................................................................................. 6
Description of Devices.......................................................................................... 6
Control Application ............................................................................................... 7
Control Provided................................................................................................... 7
Products Covered................................................................................................. 8
Or
g
anization of Manual ........................................................................................ 8
Applicable Literature............................................................................................. 8
Product Names..................................................................................................... 9
A
g
enc
y
Listin
g
s .................................................................................................... 9
Abbreviations and Definitions............................................................................... 10
Construction ......................................................................................................... 11
Controllers ...................................................................................................... 11
PERFORMANCE SPECIFICATIONS ......................................................... 13
L
ON
M
ARK
® Functional Profile ..................................................................... 17
Inputs/Outputs: ............................................................................................... 18
ANALOG INPUTS:...................................................................................... 18
DIGITAL INPUTS:....................................................................................... 19
TRIAC OUTPUTS ON THE
(
W7750B,C MODELS ONLY
)
:........................ 19
DIGITAL OUTPUTS:................................................................................... 19
Wall Modules .................................................................................................. 20
Duct Sensor .................................................................................................... 20
Confi
g
urations ...................................................................................................... 22
General ........................................................................................................... 22
Allowable Heatin
g
and Coolin
g
E
q
uipment Confi
g
urations ............................ 24
STAGED HEATING/COOLING CONTROL ................................................ 24
MODULATING HEATING/COOLING CONTROL ....................................... 24
HEAT PUMP CONTROL............................................................................. 24
ECONOMIZER CONTROL......................................................................... 25
PNEUMATIC ACTUATOR CONTROL........................................................ 25
MIXED-OUTPUT-TYPE CONTROL ........................................................... 26
Occupanc
y
Sensor ......................................................................................... 26
Window Open/Closed Di
g
ital Input ................................................................. 26
Wall Module Options ....................................................................................... 26
Dirt
y
Filter Monitor .......................................................................................... 27
Indoor Air Qualit
y
(
IAQ
)
Override ................................................................... 27
Smoke Control ................................................................................................ 27
Freeze Stat ..................................................................................................... 27
Modes of Operation.............................................................................................. 27
Application Steps .................................................................................................................................. 29
Overview .............................................................................................................. 29
Step 1. Plan the S
y
stem....................................................................................... 29
Step 2. Determine Other Bus Devices Re
q
uired.................................................. 29
Step 3. La
y
Out Communications and Power Wirin
g
........................................... 30
L
ON
W
ORKS
® Bus La
y
out ................................................................................ 30
Power Wirin
g
.................................................................................................. 32
POWER BUDGET CALCULATION EXAMPLE .......................................... 32
LINE LOSS ................................................................................................. 33
Step 4. Prepare Wirin
g
Dia
g
rams......................................................................... 35