Справочник Пользователя для Honeywell W7750A
EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
74-2958—1
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Table 15. Configuration Options Summary For W7750A,B,C Controllers.
ROOM TEMPERATURE SENSOR (RmTemp)
This is the room space temperature sensor. This sensor is the
T7770 or the T7560A,B Wall Module. When it is configured, it
provides the temperature input for the W7750 temperature
control loop. If it is not configured, it is required that a room
temperature sensor value be transmitted from another
T7770 or the T7560A,B Wall Module. When it is configured, it
provides the temperature input for the W7750 temperature
control loop. If it is not configured, it is required that a room
temperature sensor value be transmitted from another
L
ON
W
ORKS
Bus device. If no valid room temperature value is
available to the W7750 Controller, the temperature control
algorithm in the controller is disabled, causing the heating,
cooling, and economizer control outputs to be turned off. If the
W7750 Controller is configured for Continuous Fan (rather
algorithm in the controller is disabled, causing the heating,
cooling, and economizer control outputs to be turned off. If the
W7750 Controller is configured for Continuous Fan (rather
Option
Possible Configurations for the
W7750A Model
Possible Configurations for the W7750B,C Models
Type of
1. One stage.
1. One stage.
Heating
2. Two stages.
2. Two stages.
3. Three stages.
3. Three stages.
4. Four stages.
4. Four stages.
5. None.
5. Series 60 Modulating electric valve, or pneumatic via transducer.
6. Pulse Width Modulating electric valve, or pneumatic via transducer.
7. None.
Type of
1. One stage.
1. One stage.
Cooling
2. Two stages.
2. Two stages.
3. Three stages.
3. Three stages.
4. Four stages.
4. Four stages.
5. None.
5. Series 60 Modulating electric valve, or pneumatic via transducer.
6. Pulse Width Modulating electric valve, or pneumatic via transducer.
7. None.
Type of
Economizer
Economizer
1. Digital Output Enable/Disable
signal for controlling an external
economizer package.
economizer package.
1. Digital Output Enable/Disable signal for controlling an external
economizer package.
2. Series 60 Modulating electric
damper motor, or pneumatic via
transducer.
transducer.
2. Series 60 Modulating electric damper motor, or pneumatic via
transducer.
3. None.
3. Pulse Width Modulating electric damper motor, or pneumatic via
transducer.
4. None.
IAQ Option
1. None.
1. None.
2. Local IAQ Digital Input—directly
wired to the controller. (Contacts
closed means poor IAQ is
detected.)
closed means poor IAQ is
detected.)
2. Local IAQ Digital Input—directly wired to the controller. (Contacts
closed means poor IAQ is detected.)
3. Network (IAQ Override signal
received via the L
ON
W
ORKS
Bus).
3. Network (IAQ Override signal received via the L
ON
W
ORKS
Bus).
4. Local CO
2
Analog Input—directly wired to the controller. (The sensor
must be a 0 to 10V device representing 0 to 2000 PPM CO
2
.)
Coil Freeze
1. None.
1. None.
Stat Option
2. Local Coil Freeze Stat Digital
Input—directly wired to the controller.
(Contacts closed means that coil
freeze condition is sensed.)
Input—directly wired to the controller.
(Contacts closed means that coil
freeze condition is sensed.)
2. Local Coil Freeze Stat Digital Input—directly wired to the controller.
(Contacts closed means that coil freeze condition is sensed.)
(Contacts closed means that coil freeze condition is sensed.)
Filter Monitor
1. None.
1. None.
Option
2. Local Dirty Filter Digital
Input—directly wired to the
controller. (Contacts closed means
that the filter is dirty.)
controller. (Contacts closed means
that the filter is dirty.)
2. Local Dirty Filter Digital Input—directly wired to the controller.
(Contacts closed means that the filter is dirty.)
3. Local Analog Input for Differential Pressure across the Filter (directly
wired to the controller). The sensor must be a 2 to 10V device
representing 0 to 5 inw (1.25 kPa).
representing 0 to 5 inw (1.25 kPa).