W7340, W7345
Communicating Economizer Logic Modules
FOR VENTILATION CONTROL
PRODUCT DATA
FEATURES
•
•
•
Solid state control package provides accuracy,
reliability and stability.
Housed in high-impact, glass-fiber reinforced plastic
case.
W7340
Terminals included for connecting optional S963B1136
Remote Potentiometer for remote minimum damper
position control.
•
•
•
Communicates using a modified Modbus protocol.
Case matches the lines of the M7215 Damper Motor.
LED indicates the status of the device input.
W7345
W7340 Only
APPLICATION
•
Operates from the Modbus input, environmental
sensors, and a DCV sensor to provide a totally
integrated control system.
The W7340 Communicating Economizer Logic Module is a full
featured economizer that incorporates Demand Control
Ventilation (DCV) to provide free cooling and ventilation for
occupants in a space while saving energy.
•
Combines minimum damper position potentiometer
with solid state temperature (10K NTC) and humidity or
enthalpy changeover control to provide economizer
free cooling function; this control can be overridden
by input via Modbus or DCV sensor.
The W7345 Communicating Economizer Logic Module is a
dry bulb only economizer that does not incorporate Demand
Control Ventilation.
W7345 Only
The W7340 is used with both solid state temperature and
humidity or enthalpy sensors. The W7345 is used with solid
state temperature sensors only.
•
Operates from the Modbus input and mixed/discharge
air sensor to provide a temperature control system.
•
Combines the Modbus indoor and/or outdoor
temperature input with the mixed air input to provide
economizer dry bulb free cooling function.
Contents
Application.........................................................................1
Features ............................................................................1
Specifications ....................................................................2
Installation .........................................................................3
Wiring ................................................................................6
Operation...........................................................................7
Settings and Adjustment ...................................................7
Troubleshooting.................................................................11
63-2569—04
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
Table 1. Logic Module Inputs and Outputs.
W7340 W7345
Location and Mounting
Inputs
Communicating Economizer Logic Modules
When planning the installation, allow enough clearance for
maintenance and service. Mount the device in a location
protected from rain, snow, and direct sunlight. The logic
module mounts on the side of an M7215 Damper Motor or
a
Enthalpy
—
4-20 mA
yes
Modbus
yes
—
Return Sensor
Mixed/Discharge Air
optional
directly on a sheet metal duct or panel.
a
a
a
10K ohm
10K ohm
10K ohm
—
NOTE: Refer to Figures 4 and 5 for representative locations
of connected system devices.
Outdoor Sensor
Indoor DCV Sensor
0-10 Vdc control signal
optional
—
Remote Minimum
optional
Position Potentiometer
CAUTION
Mounting screws longer than 5/8 in. can damage
internal motor components.
When mounting the module to an M7215 use only the
included #6 5/8 in. thread-forming screw.
Equipment Damage Hazard.
Motor Feedback
Outputs
2-10 Vdc
—
Modbus
yes
yes
—
Exhaust
One set of 24 Vac
contacts (spst)
MOUNTING DIRECTLY TO THE MOTOR
1. Mount the motor.
Motor Output Signal
2-10 Vdc
—
a
2. Secure the W7340 or W7345 to the motor using the
2-wire (18, 20, 22 AWG) connection.
supplied mounting screw (See Fig. 2).
MOUNTING SEPARATE FROM THE MOTOR
Secure the device to the sheet metal using appropriate
fasteners (not supplied)(See Fig. 3).
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
5/8 INCH SCREW INCLUDED
WITH LOGIC MODULE.
ECONOMIZER
LOGIC MODULE
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
IMPORTANT
All wiring must agree with applicable codes,
ordinances and regulations.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
M7215
DAMPER
MOTOR
M17550B
Fig. 2. Mounting Economizer Logic Module on Damper
Motor.
3
63-2569—04
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
IMPORTANT
•
Ensure proper polarity of sensor connections.
Incorrect polarity negates the sensor signal.
W7340B: The W7340B DCV economizer logic modules
incorporate a minimum position setting that defaults to 20%,
but can be overridden using the Modbus communication link.
The W7340B DCV maximum position sets the damper position
to a position that the damper goes to if the CO sensor fails. If
2
the minimum position set point is higher than the DCV
maximum position, on sensor failure, the damper goes to the
higher of the two DCV maximum and minimum position setting.
There is no limit on the damper position on a call from the CO
2
sensor (DCV); the damper can go 100% open.
W7340C: The W7340C DCV economizer logic module has the
ability to set DCV minimum damper position and minimum
position. The DCV minimum position is set to ventilate the
building contaminants and the minimum position is set to
ventilate for the building contaminants and the building
occupants. The installer sets the damper DCV minimum
position and the minimum position based on the design
occupancy and CFM of outdoor air requirements for the space.
The damper will modulate open between the DCV minimum
damper position and the minimum position based on input
M17638
from a CO sensor. The damper will not drive 100% open on a
2
call for ventilation, but can drive 100% open on a call for
Fig. 3. Mounting to a Duct or Panel.
cooling. If the CO sensor fails the damper will drive to the
2
minimum position ventilating for building contaminants and
the building occupants. If the DCV minimum position has not
been set using the following procedure, the default setting will
be 50% of the minimum position setting.
Enthalpy Sensor (W7340 only)
To measure enthalpy, the logic module accepts signals from
either:
— C7600C Humidity and 10K NTC temperature sensors.
— or a C7400 Enthalpy Sensor.
DCV Min and Min Position Damper Set Up
Set up instructions for W7340C DCV damper positions:
IMPORTANT
1. Remove RAT sensor from RAT terminals.
•
When using C7400 Enthalpy Sensors, connect the
enthalpy sensors to the humidity sensor terminals;
leave the temperature sensor terminals empty.
Use C7400A sensor with W7340A or W7340B.
Use C7400C sensor with W7340C.
2. Connect CO sensor to DCV terminals.
2
3. Apply power to economizer logic module.
4. Wait 10 to 15 seconds for the CO2 sensor to initialize.
Short RAT terminals.
•
•
5. Remove CO sensor from DCV terminals.
2
6. DCV LED will blink 2 times. If LED does not blink, cut
power to economizer logic and repeat steps 1-5.
7. Set DCV minimum position using MIN POS/DCV MIN
potentiometer.
8. Remove RAT short.
9. DCV minimum position is saved to memory and DCV
LED blinks 5 times.
10. Turn off power to economizer logic module.
11. Connect RAT sensor.
12. Turn power on to economizer logic module.
13. Set minimum position using MIN POS/DCV MIN
potentiometer.
OUTDOOR AIR SENSING
1. Mount each sensor in any orientation that exposes it to
freely circulating air and protects it from rain, snow, and
direct sunlight.
2. Connect it to the logic module.
RETURN AIR SENSING
1. For differential enthalpy or temperature control mount a
second sensor in the return air duct.
2. Connect it to the logic module.
Demand Control Ventilation (DCV) Sensor Input
IMPORTANT
(W7340 only)
The DCV sensor can be any sensor that provides a 0-10 Vdc
Steps 3-8 must be completed within 3 minutes after
power up otherwise the configuration process will be
terminated, no changes will be saved and you will
need to repeat steps 1-13.
output over a range of 0 to 2000 ppm of CO . The DCV signal
2
modulates the outdoor damper to provide ventilation based on
occupancy. Mount the sensor according to the manufacturer
specifications. If not available, mount the sensor in an area
with unobstructed air circulation.
63-2569—04
4
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
10K NTC
DISCHARGE
AIR SENSOR
INDOOR
MODBUS
C7232
AIR CO2
2
SENSOR
DIRECT
EXPANSION
COIL
MIXED AIR
10K
NTC
SENSOR
2
1
3
C7400
INDOOR
FAN
ENTHALPY
SENSOR
DISCHARGE
AIR
OUTDOOR
AIR
M7215 MOTOR
WITH W7340
ECONOMIZER
LOGIC MODULE
1
3
C7400
1
FOR DIFFERENTIAL ENTHALPY, THE TWO C7400 ENTHALPY SENSORS
ARE CONNECTED TO THE ECONOMIZER MODULE—ONE IS MOUNTED
IN THE RETURN AIR DUCT, AND THE OTHER IS MOUNTED IN THE
OUTDOOR AIR DUCT. DIFFERENTIAL ENTHALPY CONTROL PROVIDES
GREATER ENERGY SAVINGS THAN SINGLE ENTHALPY CONTROL.
ENTHALPY
SENSOR
EXHAUST
FAN
2
3
USE EITHER MIXED AIR SENSOR OR DISCHARGE AIR SENSOR, NOT BOTH.
EXHAUST AIR
M22814
A C7600 HUMIDITY SENSOR, USED IN CONJUNCTION WITH A 10K NTC
TEMPERATURE SENSOR CAN BE USED INSTEAD OF A C7400 ENTHALPY SENSOR.
FOR DRY BULB CONTROL, USE ONLY A 10K NTC TEMPERATURE SENSOR.
RETURN AIR
Fig. 4. Representative Locations of Connected W7340 Economizer System Devices.
10K NTC
DISCHARGE
AIR SENSOR
1
MODBUS
DIRECT
EXPANSION
COIL
MIXED AIR
SENSOR
10K
NTC
1
INDOOR
FAN
DISCHARGE
AIR
1
OUTDOOR
AIR
M7215 MOTOR
WITH W7345
ECONOMIZER
LOGIC MODULE
EXHAUST
FAN
EXHAUST AIR
M22822
RETURN AIR
1
USE EITHER MIXED AIR SENSOR OR DISCHARGE AIR SENSOR, NOT BOTH.
Fig. 5. Representative Locations of Connected W7345 Economizer System Devices.
5
63-2569—04
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
IMPORTANT
WIRING
1. All wiring must comply with applicable local codes,
ordinances and regulations.
2. Refer to Figures 6 and 7 for typical wiring diagrams.
3. All inputs and outputs to the device must be 24 Vac
Class 2.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
4. Ensure proper polarity of sensor connections.
Incorrect polarity negates the sensor signal.
Disconnect power supply before installation.
NOTE: All connections with label designation ending in 1
(examples: TR1, P1) are ac/dc common connections.
MOD BUS –
MOD BUS +
2-10 Vdc
2-10 Vdc
M7215
W7340
24 VAC
TR1 TR
FEEDBACK
OUTPUT
CONTROL
SIGNAL INPUT
MOD
BUS
–
L1
L2
1
24 VAC
+
–
+
–
–
+
2-10 Vdc
CONTROL
SIGNAL
2-10 Vdc
FEEDBACK
INPUT
OUTPUT
C
B
A
D
E
MIN POS/
DCV MIN
DCV
SETPOINT
3
3
+
–
+
–
+
–
POWER
C7600C
OUTDOOR
AIR
RETURN
AIR TEMP
SENSOR
10K NTC
DCV
EXHAUST
SENSOR
CONTACTOR
(0-10 Vdc)
2
S963B
HUMIDITY
R
3
CW
CCW
MIXED
OUTDOOR
AIR TEMP
SENSOR
10K NTC
C7600C
RETURN
AIR
CLOSE
OPEN
AIR TEMP
SENSOR
10K NTC
B
W
3
HUMIDITY
1
2
3
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
OPTIONAL REMOTE MINIMUM POSITION POTENTIOMETER.
WHEN USING C7400 ENTHALPY SENSORS, CONNECT THE ENTHALPY SENSOR TO THE
HUMIDITY SENSOR TERMINALS. LEAVE THE TEMPERATURE SENSOR TERMINALS EMPTY.
M23875
Fig. 6. W7340 Typical Wiring.
63-2569—04
6
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
MOD BUS –
MOD BUS +
M7215
W7345
24 VAC
TR1 TR
MOD
BUS
–
L1
L2
1
24 VAC
–
+
C
B
A
D
E
MINIMUM
POSITION
2
S963B
R
CW
CCW
MIXED
CLOSE
W
OPEN
AIR TEMP
SENSOR
10K NTC
B
1
2
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
OPTIONAL REMOTE MINIMUM POSITION POTENTIOMETER.
M23876
Fig. 7. W7345 Typical Wiring.
OPERATION
SETTINGS AND ADJUSTMENT
The purpose of the economizer logic modules are to use
outdoor air for cooling, whenever possible, to reduce
compressor operation.
W7345
Potentiometers with screwdriver adjustment slots, located on
the face of the device, provide adjustments for Minimum
Damper Position parameters (See Fig. 8 for locations on
device).
IMPORTANT
•
•
Use C7400A sensor with W7340A or W7340B.
Use C7400C with W7340C.
MINIMUM
DAMPER
POSITION
The W7340, when wired as shown in Fig. 6, responds to a
signal from the Modbus. This system uses C7400 Solid State
Enthalpy Changeover Sensor(s). The C7400 Enthalpy Sensors
respond to both dry bulb temperature and humidity, allowing
use of outdoor air at higher temperatures for free cooling when
humidity is low.
DRY BULB
CHANGEOVER
SETPOINT
-
MAT
OPEN
C
OAT
RAT
STATUS LED
MIN POS/
DVC MIN
The logic module functions as a first stage of cooling and
provides maximum fuel economy during the cooling cycle. The
logic module automatically locks out free cooling during
heating. It holds the outdoor air damper at the minimum
position setting.
B
A
D
E
MBUS-
MBUS+
P
P1
TR1 24V COM
TR 24V AC
The W7340 operates as a basic free cooling controller. Table 2
details the input/output (I/O) logic of the W7340. The logic
module energizes the Unit Control and Indoor Fan contacts,
and operates according to Table 2.
M23877
Fig. 8. Location of W7345 Potentiometers and LED.
7
63-2569—04
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
Table 2. W7340 Economizer I/O Logic.
W7340
Potentiometers with screwdriver adjustment slots, located on
the face of the device, provide adjustments for several
parameters (See Fig. 9 for locations on device):
— DCV minimum and minimum damper position.
— Enthalpy changeover.
INPUTS
OUTPUTS
Compressor
a
Enthalpy
b
b
DCV Outdoor Return Y1 Y2 Stage 1 Stage 2 Damper
Below High
set
Low
High
Low
High
On On On
On Off On
On On On
On Off Off
On On On
On Off On
On On On
On Off Off
On
Off
Off
Off
On
Off
Off
Off
Minimum
position
— DCV setpoint.
MIN POS/DCV
MIN DAMPER
POSITION
c
d
e
Low
Modulating
Modulating
Modulating
ExF
2-10 VDC
+
-
DAMPER
POSITION
2-10 VDC
DAMPER
ENTHALPY
CHANGEOVER
SETPOINT
Above High
set
MAT
+
-
+
POSITION
OVERRIDE
OAH
OAT
RAT
_
OPEN
Low
STATUS LED
MIN POS/
DCV MIN
DEMAND
C
B
D
+
_
CONTROL
VENTILATION
SETPOINT
a
b
RAH
For single enthalpy control, the module compares outdoor
enthalpy to the ABCDE setpoint.
A
E
DCV
DCV
SETPOINT
500 1500
MBUS-
If both stages of cooling are off, the system is off and the
damper is:
P
P1
MBUS+
TR1 24V COM
TR 24V AC
•
At DCV minimum position if DCV is below setpoint.
•
Modulating if DCV is above setpoint.
M23878
c
d
e
Modulation based on mixed air sensor signal, modulating
between DCV minimum position and 100% open.
Fig. 9. Location of W7340 potentiometers and LED.
IMPORTANT
Modulation based on DCV signal, limited by minimum
position.
Modulation based on the greater of the DCV and mixed air
sensor signals.
Before powering the device read the following Enthalpy
changeover setpoint guidelines:
1. Using the Enthalpy changeover setpoint, the setpoint
can be adjusted until three minutes after powering the
device. until three minutes after powering the device.
2. Through the Modbus, the Enthalpy changeover
setpoint can be modified at any time.
Adjusting Minimum Damper Position
The minimum position potentiometer maintains the minimum
outdoor air flow into the building during occupied period.
3. If the Enthalpy changeover potentiometer is changed
after the three minute power-up time, no change to
the Enthalpy changeover setpoint will occur unless
power is removed from the device then reapplied.
NOTE: If the mixed air temperature drops to 45° F (7° C), the
mixed air sensor overrides the DCV sensor and
closes the damper to DCV minimum position to
protect the hot or chilled water coils from freezing.
When the mixed air temperature rises to 48° F (9° C),
control reverts to normal operation.
NOTES:
—
The DCV setpoint can be changed at anytime by
adjusting the pot.
For detailed assistance in minimum position selection,
reference the Economizer Application Guide (form 63-8594)
Ventilation section. The following provides basic guidelines for
minimum position selection and adjustment:
—
—
—
For Enthalpy changeover setpoint see comments
above.
MIN POS can be changed anytime by adjusting
the pot.
DCV Min can be changed by procedure on page 4.
IMPORTANT
1. Adjust the minimum position potentiometer to allow
the amount of outdoor air, as required by local codes,
to enter the building for building contaminants and the
maximum building occupants.
2. This procedure requires use of a quality thermometer
capable of reading to 0.5° F (0.-17.5° C).
Demand Control Ventilation (DCV) Setpoint
The logic module modulates the outdoor damper to provide
ventilation based on the 2-10 Vdc DCV sensor. With no cooling
signal, DCV overrides the DCV minimum damper position
when ventilation requires outdoor air.
NOTE: Make minimum position adjustments with at least a
10° F (-12° C) temperature difference between
outdoor and return air.
See section on DCV setpoint set up on page 4.
63-2569—04
8
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
Limit On Minimum Damper Position
Differential Enthalpy Changeover Setting
On the W7340A and B models, the logic module as shipped
from the factory, limits the minimum position setpoint to 50%.
The logic module will not allow a minimum position greater
than 50% open (from fully closed).
Differential enthalpy control uses:
— W7340A and B use two C7400A Enthalpy Sensors
connected to one logic module, or
— Two 10K NTC temperature sensors and two C7600C
Humidity Sensors connected to one logic module.
— W7340C uses C7400C Enthalpy Sensor(s) or
— Two 10K NTC temperature sensors and two C7600C
Humidity Sensors connected to one logic module.
NOTE: This setpoint limit can only be changed using a
Modbus command.
Equation 1. Formula to aid in minimum position adjustment.
With outdoor and return air sensors, the logic module
compares outdoor air to return air instead of to a setpoint as it
does for single enthalpy. The logic module selects the lower
enthalpy air (return or outdoor) for cooling; for example, when
outdoor air has lower enthalpy than return air, the outdoor air
damper opens to bring in outdoor air for free cooling.
(TO × OA) + (TR × RA) = TM or
(TO – TR) × OA + TR = TM
Where:
TO = Outdoor air temperature
OA = Percent of outdoor air
TR = Return air temperature
RA = Percent of return air
TM = Resulting mixed air temperature
NOTE: When using the W7340 for differential enthalpy, keep
the setpoint potentiometer set at D.
Exhaust Setpoint (W7340 only)
The exhaust setpoint determines when the exhaust fan will run
based on the damper position.
NOTE: The following sample calculation uses only
Fahrenheit temperature.
The logic module, as shipped from the factory, uses an
exhaust setpoint of 25%. When the damper position is greater
than 25% open (from fully closed), relay contact for the
exhaust fan is closed. When the damper position is below 22%
open, the relay is de-energized.
EXAMPLE: Assume local codes require 10% outdoor air
during occupied conditions, outdoor air is 60° F
and return air is 75° F. Under these conditions,
what is the temperature of the mixed air?
(0.1x6° F) + (0.9x75° F) = 6.0° F + 67.5° F = 73.5° F or
(60° F – 75° F) × 0.1 + 75° F = – 1.5 + 75° F = 73.5° F
Control Configuration (W7340 only)
The W7340 can be configured for humidity or enthalpy
sensors. Configuration can be performed manually or over the
Modbus.
Mixed air will be 73.5° F when OA is 60° F and RA is 75° F with
10 percent outdoor air entering the building.
IMPORTANT
NOTE: The W7340C model min position and DCV min must
be set in the field by the installer. See Section DCV
Min and Min Position Damper Set up.
If only a temperature sensor is connected to the
W7340, the device will operate using dry bulb
changeover control.
To configure the W7340 manually:
Enthalpy Changeover (W7340 only)
1. Within the first three minutes after powering the device,
short the external minimum damper position terminals
(P-P1).
Outdoor Enthalpy Changeover Setpoint (Single
Enthalpy Changeover)
The outdoor enthalpy changeover setpoint returns the outdoor
air damper to minimum position when enthalpy rises above its
setpoint. Enthalpy setpoint scale markings, located on the
device, are A, B, C, D and E. See Fig. 10 for the corresponding
control point.
NOTE: The LED will go solid within five seconds of
shorting these terminals.
2. Maintaining the short for another five seconds causes
the LED to flash quick pulses (between off periods)
indicating the sensor configuration type:
a. Two quick pulses: Humidity.
b. Three quick pulses: Enthalpy.
3. To toggle the sensor configuration type:
a. Remove the short until the LED goes solid again.
b. Reapply the short for another five seconds.
NOTE: Once the short is removed for over 10 seconds,
the device saves the most recent configuration.
9
63-2569—04
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
85
90
95 100 105 110
(29) (32) (35) (38) (41) (43)
CONTROL CONTROL POINT
CURVE
APPROX. °F (°C)
AT 50% RH
80
(27)
A
B
C
D
E
73 (23)
70 (21)
67 (19)
63 (17)
55 (13)
75
(24)
70
(21)
65
(18)
60
60
(16)
A
55
(13)
B
50
(10)
C
45
(7)
D
40
(4)
E
35
(2)
1
A
B
C
D
E
35
(2)
40
45
50
55
60
65
70
75
80
85
90
95 100 105 110
(4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)
APPROXIMATE DRY BULB TEMPERATURE— °F (°C)
HIGH LIMIT CURVE FOR W7210D, W7212, W7213, W7214, W7340B.
M23879
1
Fig. 10. W7340 Performance Characteristics for Enthalpy Changeover Settings.
Table 3. W7345 Performance Characteristics
for Temperature Changeover Settings.
Approximate Control Point
Temperature
Changeover Setting
°F
73
70
67
63
55
°C
23
21
19
17
13
A
B
C
D
E
63-2569—04
10
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
Table 4. W7340 Economizer Checkout.
TROUBLESHOOTING
Pulse
count
Diagnostic
bit
Description
The status LED is visible through a hole in the device cover. A
priority-based LED flash sequence indicates a detected fault.
0.25 seconds elapses between each pulse, a higher pulse
count indicates higher priority. A two-second on period
precedes each repeated sequence.
Booting (0-3 min. after power-up)
Mixed air temperature sensor fault
Outdoor air temperature sensor fault
Outdoor air humidity sensor fault
Return air temperature sensor fault
Return air humidity sensor fault
Indoor air quality sensor fault
Actuator fault
NA
8
12
7
7
6
6
5
The diagnostic bit position corresponds to the Modbus
diagnostic register. The diagnostic bit resets when the
respective fault is present. To read all active faults, read the
diagnostic register via Modbus function code 8 (no flash
priority needed).
4
3
3
2
2
1
1
0
NOTES:
Proper operation (outdoor air
appropriate for free cooling)
Solid
ON
—
All pulse counts (Table 4) are based on the
number of times the light pulses off.
In the event of a Communications Failure, the LED
NA
NA
Proper operation (NO free cooling) 2 Hz flash
—
pulses on for 0.25 seconds every 2 seconds.
Communications failure
1 (pulses
on)
NA
11
63-2569—04
W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
63-2569—04 J.I. Rev. 06-07
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