Honeywell W6215 Series, Данные о продукции, Страница: 5 / 28

W6215, W7215, W7460 ECONOMIZER LOGIC MODULES
5 63-2544—3
Table 2. Applicable Wiring Diagrams.
OPERATION
The purpose of the economizer is to use outdoor air for
cooling, whenever possible, to reduce compressor operation.
When wired as shown in Fig. 6 through 25, the logic module
responds to the cooling thermostat signal. This system
uses C7400 Solid State Enthalpy Changeover Sensor(s) or
C7650 Dry Bulb Temperature Sensor(s). The C7400 responds
to both dry bulb temperature and humidity, allowing use of
outdoor air at higher temperatures for free cooling when
humidity is low. The C7650 responds only to dry bulb
temperature; use only in dry, arid climates.
The logic module functions as a true first stage of cooling
providing maximum fuel economy during the cooling cycle.
It automatically locks out free cooling during heating; holding
the outdoor air damper at the minimum position setting.
The logic module can operate as either a basic free cooling
controller, or it can incorporate additional functions. Tables 3
and 5 detail the input/output (I/O) logic of the module. Certain
functions—Purge, Shutdown, and Air Change—override
others, see Table 3. When these functions are all off, the logic
module energizes the Unit Control and Indoor Fan contacts,
operating according to Table 5.
Purge (W6215A, W7215A, and W7460A only )
When terminals PG and PG1 connect through relay contacts
or a jumper:
1. Outdoor damper drives fully closed.
2. Exhaust fan turns on.
Fig. 4. S963B1128 Remote Potentiometer used with
W6215, W7215, W7460 for remote damper control.
Logic Module Actuator Enthalpy Changeover Figure Comments
W6215A Honeywell Series 62 Single 8 Single-stage cooling system.
Single or Differential 9 Two-stage cooling system.
W7215A Honeywell Series 72 Single 10 Single-stage cooling system.
Single or Differential 11 Two-stage cooling system.
12 T775 controller.
Honeywell Series 90 n/a 6 Add Q7230 Interface Module.
W7215B Honeywell Series 72 Single 13 Single-stage cooling system.
Single or Differential 14 Two-stage cooling system.
15 T775 controller.
W7460A Honeywell M7415 Single 16 Single-stage cooling system.
Single or Differential 17 Two-stage cooling system.
W7460B Honeywell M7415 Single 18 Single-stage cooling system.
Single or Differential 19 Two-stage cooling system.
ALL n/a n/a 20 W7100 controller.
25 W973 Logic Panel.
4 S963 remote damper control.
Parallel Wiring
W6215 Honeywell Series 62 Single or Differential 21 Honeywell Series 62 Direct Coupled Actuators.
W7215A Honeywell Series 72 22 Honeywell Series 72 Direct Coupled Actuators.
23 Honeywell Series 72 Modutrol Motors.
Honeywell M7415 24 M7415 Motors.
M11796A
P1
P
W6215/W7215/W7460 ECONOMIZER
R
MINIMUM
POSITION
ADJUSTMENT
W B
CW
CLOSE CCW
OPEN
S963B1128 REMOTE
POTENTIOMETER
135 OHM
OPEN
CW
R
MAXIMUM
POSITION
ADJUSTMENT
W B
CW
CLOSE CCW
OPEN
S963B1128 REMOTE
POTENTIOMETER
135 OHM
CW
Q
Q1