Advanced M52 Microprocessor User's Guide
ADVANCED M52UMCT2019 COLOR
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Page 3: Configuration 1
Parameter Definition
No Duty Units Units required to run together in a Co-Work network to satisfy the load.
Temp. setpoint Controls space temperature based on return or supply air temperature.
Humid. setpoint Controls space humidity based on return or supply air humidity
Ht/Dehum/Hum Fan Sets the fan speed when humidification/heating or dehum demand is
present.
Standby fan Sets the fan speed when the unit is in standby operation
Cooling Min fan
Sets the minimum fan speed when cooling demand is not present
Cooling Max fan
Sets the maximum fan speed when cooling demand is present
CW Valve Start - Pt Sets the minimum demand required for the CW valve to begin opening
Discharge Set - Pt Sets the fan speed based on static pressure
Discharge Dead Bd Tolerance for discharge fan speed pressure
Water Reg Min AO Minimum open setting for modulating water regulating valve
Page 4: Configuration 2
Parameter Definition
Baud rate Network communication speed
On/Off mode Sets unit to turn “ON” and “OFF” by local keypad, remote signal or timer
schedule.
Auto changeover Time interval after which duty and standby unit switch in a Co-Work network
Warm-up period Allows sensor reading to stabilize before tripping alarms
Fan purge delay Runs fan for minimum time to dissipate heat in components before fan shuts down.
Comp. Min time Prevents compressors from running for less than this time
Comp. elapse Prevents compressors from restarting for minimum time after stopping
Pos.start delay By passes refrigerant low-pressure switch and alarm during compressor start-up to
prevent nuisance alarms in cold weather.
Humid. Fault
delay
Connected to the humidifier high water level sensor and delays boiler dirty alarm
to prevent nuisance alarms on humidifier start-up.
Liquid H/L Fault
delay
Time interval to activate alarm after fault has been detected.
Temp. unit
Sets ALL temperature display units to F or C
Sensor Display In a Co-Work network choose to display the individual unit sensor readings or the
average readings (SITE readings are the average of all sensor readings in a Co-
Work network)
Language Choose between English and Chinese
Control Sensor Enables the unit to be controlled by Supply or Return Air Sensor. Mix is Supply
Temperature and Return Humidity.
Page 5 Configuration 3
Parameter Definition
Temp. dead band Tolerance for return air, + or – ½ deadband. Range of temperature where
temperature control operation does not change
Relaxband Temp Used in the timer schedule allows an alternate deadband setting
Hum. dead band Tolerance for return air, + or – ½ deadband. Range of humidity where
humidity control operation does not changes
Relaxband Humid Used in the timer schedule allows an alternate deadband setting
Prop.band Cool Temperature range over which all cooling stages are equally activated or
chilled water valve modulates to full open.
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