Sunlight Supply Grozone Control SCC1 Temperature, Humidity and CO2 Controller Simple One Series - Manual (Page 6)

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Grozone SCC1 Advanced User Guide – March 2012 www.grozonecontrol.com
5- OUTPUT PRIORITIES AND FAIL STATES
Every CONTROL ACTION taken by the SCC1 is given a priority level. A higher priority action WILL ALWAYS
SUPERSEDE any lower priority action. Output Priorities can be modified with the Alternate Settings.
See Section 6- on next page.
SUMMARY OF CONTROL PRIORITIES AND RELATED ACTIONS (Factory Settings)
PRIORITY
LEVEL
ACTION
NAME
DESCRIPTION OF ACTION ON OUTPUTS
LOWEST
FAN,
HUMIDITY
and HEATER
OUTPUTS
CONTROLLING THE
TEMPERATURE and
HUMIDITY
IN YOUR ROOM
ALL OUTPUTS ARE AFFECTED:
FAN, HUMIDITY and HEATER Outputs are controlled according to Knob Settings.
MEDIUM
CO2 OUTPUT
GIVING CO2 OUTPUT
PRIORITY
OVER FAN OUTPUT
ONLY FAN OUTPUT IS AFFECTED:
The FAN Output is turned OFF when the CO2 Output is turned ON to avoid wasting CO2 outside.
FAN Output resumes operation after a 10-min delay following the CO2 enrichment (timer starts when CO2
Output is turned Off). This delay allows plants to absorb the injected CO2 before re-starting the cooling FAN.
IMPORTANT NOTICE: The CO2 Output priority is suspended while the Output Indicator is flashing during
2 conditions: 1- the High Temp limit has been reached, 2- the Empty tank condition has been met. Refer to
Section 2D of the Quick Start User Guide for further details.
HIGH
TEMPERATURE
LIMITS
LOW TEMPERATURE LIMIT
ONLY FAN OUTPUT IS AFFECTED:
The FAN Output is turned OFF in the “Cooling and Dehumidifying” mode when fan is unable to reach the
HUMIDITY SETPOINT while room temperature is getting too cold.
The Low Temperature Limit is set to 6°F below TEMPERATURE SETPOINT.
Using “Cooling and Dehumidifying” mode is NOT RECOMMENDED when outside air is cold and humid, so
cooling action is possible but dehumidifying action is impossible.
HIGH TEMPERATURE LIMIT
ONLY CO2 OUTPUT IS AFFECTED:
The CO2 Output is turned OFF whenever the temperature gets too high while using a burner that generates
excessive heat in the room. Since CO2 Output is given priority over the Fan Output, the fan will always be OFF
while the burner is ON. If your burner is oversized, high temperature condition (10°F above TEMPERATURE
SETPOINT) is likely to occur. If using a tank, the high temperature limit is not likely to be reached, UNLESS
YOUR TANK IS EMPTY.
TOP
SENSOR
FAILURES
TEMPERATURE SENSOR
FAILURE
FAN OUTPUT IS AFFECTED:
The FAN Output is maintained ON if a temperature sensor failure is detected (damaged, short-circuited or
disconnected). This ensures a proper ventilation at all times.
HEATER OUTPUT IS AFFECTED:
The HEATER Output is maintained OFF if a temperature sensor failure is detected (damaged, short-circuited or
disconnected).
CO2 OUTPUT IS AFFECTED:
The CO2 Output is maintained OFF if a temperature sensor failure is detected (damaged, short-circuited or
disconnected). (To enable CO2 Output while Temp Sensor Falure, use alternate setting)
HUMIDITY SENSOR
FAILURE
HUMIDITY OUTPUT IS AFFECTED:
The HUMIDITY Output is maintained OFF if a humidity sensor failure is detected (damaged, short-circuited or
disconnected).
FAN OUTPUT IS AFFECTED if Slide Switch set to “Cool & Dehumidify”:
The FAN Output will keep working in Cooling mode ONLY. This ensures a proper ventilation at all times.
CO2 SENSOR FAILURE
ONLY CO2 OUTPUT IS AFFECTED:
The CO2 Output is maintained OFF if a CO2 sensor failure is detected (sensor not responding or responds with
a value below 250 ppm). This is a factory setting.
Note: in case of a LIGHT SENSOR FAILURE, the SCC1 is likely to detect a NIGHT at all times, so DAY operation will be
disable.