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Checkout Tests
Use the Checkout menu (refer to Table 11) to test the damper op-
eration 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
button to select the item.
3.
RUN? appears.
4.
Press the
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 damage to equip-
ment.
Be sure to allow enough time for compressor startup and shut-
down between checkout tests. Do not short-cycle the compres-
sors.
SETUP AND CONFIGURATION
W7220 Economizer Module Wiring
See Fig. 38 and Tables 12 and 13 to locate the wiring terminals for
the economizer module.
NOTE: The four terminal blocks are removable. Slide out each
terminal block, wire it, and then slide it back into place.
MAT
MAT
OAT
OAT
S-BUS
S-BUS
IAQ 2-10
IAQ COM
IAQ 24V
ACT 2-10
ACT COM
ACT 24V
50040839-001
Rev. G
Fig. 38 — W7220 Economizer Module Terminal
Connection Labels
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
25
NA
MA
AUX2-
NA
MA
A2
OCC
OA
OCC
OA
E-GND
EXH1
EX
SB
SB
A1
AUX1-O
SB
SB
Cert
Product
California Title 24, Part 6
SB
HJW10
SB
www.energy.ca.gov
V
Y2I
Y2-
C
R
Y2O
Y2-O
Y1I
V
Y1-
Y1O
C
R
C
Y1-O
NA
R
C
R
50048848-002
Rev. A
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
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