SYSTEM ENGINEERING
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istered Trademark
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ht © 2000 Hone
y
well Inc. • All Ri
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hts Reserved
Excel 10W7750A,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
LONMARK® 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
LONWORKS® 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