7
Checkout Tests
Use the Checkout menu (see Table 2 on page 6) to test
the damper operation and any configured outputs. Only
items that are configured are shown in the Checkout
menu.
NOTE
: See User Interface on page 3 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 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 tests can be performed at ay time during the
operation of the system as a test that the system is operable.
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
Be sure to allow enough time for compressor startup
and shutdown between checkout tests so that you do
not short--cycle the compressors.
CAUTION
!
SETUP AND CONFIGURATION
W7220 Economizer Module Wiring
Use Fig. 3 and Tables 3 and 4 to locate the wiring
terminals for the Economizer module.
NOTE
: The four terminal blocks are removable. You can
slide out each terminal block, wire it, and then slide it back
into place.
W7220 Controller
Left Terminal
Block Label
Right Terminal
Block Label
C12014
Fig. 3 -- W7220 Economizer Module Terminal
Connection Labels
Table 3 – Economizer Module --
Left Hand Terminal Blocks
Label
Type
Description
Top Left Terminal Block
MAT
MAT
20k NTC
and
COM
Mixed Air Temperature Sensor
(polarity insensitive connection)
OAT
OAT
20k NTC
and
COM
Outdoor Air Temperature Sensor
(polarity insensitive connection)
S---BUS
S---BUS
S---Bus
(Sylk Bus)
Enthalpy Control Sensor
(polarity insensitive connection)
Bottom Left Terminal Block
IAQ 2---10
2---10 Vdc
Air Quality Sensor Input
(e.g. CO
2
sensor)
IAQ COM
COM
Air Quality Sensor Common
IAQ 24V
24 Vac
Air Quality Sensor 24 Vac Source
ACT 2---10
2---10 Vdc
Damper Actuator Output (2---10 Vdc)
ACT COM
COM
Damper Actuator Output Common
ACT 24V
24 Vac
Damper Actuator 24 Vac Source
Table 4 – Economizer Module --
Right Hand Terminal Blocks
Label
Type
Description
Top Right Terminal Block
n/a
The first terminal is not used
AUX2 I
24 Vac IN
Shut Down (SD) or Heat (W)
Conventional only
or
Heat Pump Changeover (O?B) in
Heat Pump mode.
OCC
24 Vac IN
Occupied / Unoccupied Input
E---GND
E---GND
Earth Ground --- System Required
EXH1
24 Vac OUT Exhaust Fan 1 Output
AUX1 O
24 Vac OUT Programmable:
Exhaust fan 2 output
or
Erv
or
System Alarm output
Bottom Right Terminal Block
Y2---I
24 Vac IN
Y2 in --- Cooling Stage 2 Input from
space thermostat
Y2---O
24 Vac OUT Y2 out --- Cooling Stage 2 Output to
stage 2 mechanical cooling
Y1---I
24 Vac IN
Y1 in --- Cooling Stage 2 Input from
space thermostat
Y1---O
24 Vac OUT Y1 out --- Cooling Stage 2 Output to
stage 2 mechanical cooling
C
COM
24 Vac Common
R
24 Vac
24 Vac Power (Hot)
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.
LLECO
N
--
01
S
I
