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Checkout Tests
Use the Checkout menu (see Table 11) to test the damper
operation and any configured outputs. Only items that are
configured are shown in the Checkout menu.
NOTE: See User Interface for information about menu navigation
and use of the keypad.
To perform a Checkout test:
1.
Scroll to the desired test in the Checkout menu using the ▲
and ▼ buttons.
2.
Press the
(Enter) button to select the item.
3.
RUN? appears.
4.
Press the
(Enter) button to start the test.
5.
The unit pauses and then displays IN PROGRESS.
6.
When the test is complete, DONE appears.
7.
When all desired parameters have been tested, press
the
(Menu up) button to end the test.
Checkout test can be performed at any time during the operation
of the system as a test that the system is operable.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
Be sure to allow enough time for compressor start-up and
shutdown between checkout tests so that you do not short-
cycle the compressors.
W7220 Economizer Module Wiring
Use Fig. 42 and Tables 12 and 13 to locate the wiring terminals for
the economizer module.
MAT
MA
MAT
MA
OAT
OA
OAT
OA
S-BUS
SB
SB
S-BUS
SB
SB
SB
SB
V
IAQ 2-10
C
R
IAQCOM
IAQ 24V
V
C
ACT 2-10
R
NA
ACT COM
ACT 24V
50040839-001
Rev. G
Fig. 42 — W7220 Wiring Terminals
NA
AUX2-
NA
OCC
A2
OCC
E-GND
EXH1
EX
A1
AUX1-O
Certified FDD Product
California Title 24, Part 6
HJW10
www.energy.ca.gov
Y2-
Y2I
Y2O
Y2-O
Y1I
Y1-
Y1O
Y1-O
C
R
C
R
50048848-002
Rev. A
d
Table 12 — Economizer Module — Left Hand
Terminal Blocks
LABEL
TYPE
Top Left Terminal Block
MAT
20k NTC
MAT
and COM
OAT
20k NTC
OAT
and COM
S-BUS
S-BUS
S-BUS
(Sylk
Bus)
*
Bottom Left Terminal Block
IAQ 2-10
2-10 vdc
IAQ COM
COM
IAQ 24V
24 vac
ACT 2-10
2-10 vdc
ACT COM
COM
ACT 24V
24 vac
*
Sylk is a trademark of Honeywell International Inc.
Table 13 — Economizer Module — Right Hand
Terminal Blocks
LABEL
TYPE
Top Right Terminal Block
—
n/a
AUX2 I
24 vac IN
OCC
24 vac IN
E - GND
E-GND
EXH1
24 vac OUT Exhaust Fan 1 Output
AUX1 O
24 vac OUT
Bottom Right Terminal Block
Y2-1
24 vac IN
24 vac OUT Y2 out - Cooling Stage 2 Output to stage 2
Y2-O
Y1-I
24 vac IN
24 vac OUT Y1 out - Cooling Stage 2 Output to stage 2
Y1-O
C
COM
R
24 vac
TIME-OUT AND SCREEN SAVER
When no buttons have been pressed for 10 minutes, the LCD
displays a screen saver, which cycles through the Status items.
Each Status item displays in turn and cycles to the next item after
5 seconds.
24
DESCRIPTION
Mixed Air Temperature Sensor
(Polarity insensitive connections)
Outdoor Air Temperature Sensor
(Polarity insensitive connection)
Enthalpy Control Sensor
(Polarity insensitive connection)
Air Quality Sensor Input
(e.g. CO
sensor)
2
Air Quality Sensor Common
Air Quality Sensor 24 vac Source
Damper Actuator Output (2-10 vdc)
Damper Actuator Output Common
Damper Actuator 24 vac Source
DESCRIPTION
The first terminal is not used
Shut Down (SD) or Heat (W)
Conventional only
and
Heat Pump Changeover (O/B) in Heat
Pump mode.
Occupied / Unoccupied Input
Earth Ground - System Required
Programmable:
Exhaust fan 2 output
or
ERV
or
System alarm output
Y2 in - Cooling Stage 2 Input from space
thermostat
mechanical cooling
Y1 in - Cooling Stage 2 Input from space
thermostat
mechanical cooling
24 vac Common
24 vac Power (Hot)
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