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Document No. 125-1902
User Guide
June 26, 2018
LVC2, 135 Ohm for POL220.10 and POL220.15
The LVC2 Control Board can be used to remotely
set the minimum damper position and connect the
RP and COM terminals of the device.
Figure 11. RP and OCC Terminals.
This input offsets the damper minimum position
setting (MIN POS).
LED Fault Detection and Diagnostics
Status
Commissioning mode
Power-Start-up
MA/OA Sensor failure in SNGL mode
MA/OA/RA Sensor failure in DIFF mode
MIN POS potentiometer Failure
CO2 Sensor failure when DCV is enabled
DCV SET/DCT ACT potentiometer failure
DCV SET position is inappropriate
Brownout
Failure to detect valid FC Sensor mix during
initialization
Application
Figure 12. Connected Economizer System Components Location Example.
Page 8 of 16
When the remote potentiometer is installed, set the
MIN POS potentiometer to 0%; the damper position
will receive positioning signals from the LVC2
Control Board.
Occupancy Input
The Economizer Controller can input an occupancy
signal from the commercial thermostat on inputs
OCC and COM. If an occupancy signal is not
available, order Jumper Accessory 985-960, and
connect to these inputs to default the occupancy
status to ON.
When OFF, the minimum damper position is 0%.
Table 5. LED Pattern Summary.
Free Cooling
LED
Red Blinking
Orange
Red On
Red On
Red On
̶
̶
̶
Red On
Red On
Demand Control
Exhaust Fan
Ventilation LED
Red Blinking
Orange
̶
̶
̶
Red On
Red On
Fast Red Blinking
Red On
̶
Siemens Industry, Inc.
LED
̶
Green
̶
̶
̶
̶
̶
̶
̶
̶
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