Canatal M52 - Page 32

M52 Microprocessor User's Guide
M52UMCT Oct-03 32
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.
1
Boiler dirty T. Connected to the humidifier high water level sensor and delays boiler dirty alarm
to prevent nuisance alarms on humidifier start-up.
1
Boiler limit T. Not used with steam electrode humidifier. Activates a drain cycle to flush the
pan on IR humidifiers.
Sensor mode Enables or disables the units return air sensor from the averaging feature in a Co-
Work network during standby periods. Also used for M52 Demo controllers or
remote supervisory panels.
Temp. display
Sets temperature display on Status page 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
Page 3: Readings
Parameter Definition
Main temp. Calibration function used to fine tune the return air temperature sensor.
2
Temperature - 2 Calibration function used to fine-tune the spare temperature sensor.
2
(used only
in free cool units for monitoring glycol loop temperature)
Main humidity Calibration function used to fine-tune the return air humidity sensor.
2
Humidity - 2 Calibration function used to fine-tune the spare humidity sensor. 2 (not used)
Voltage Calibration function used to fine tune the voltage reading from the control
transformer.
2
Fan runtime Totals fan run time, 1 to 4 or 8
Comp. runtime Totals compressor run time, 1 to 8
Heater runtime Totals heater run time, 1 to 4, 8 or 12
Humid. runtime Totals humidifier run time, 1 to 4 or 8
Dehum. runtime Totals full cooling run time. Dehumidifier run time = compressor run time –
Dehum runtime, 1 to 4 or 8
Page 4: Control Parameter
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
Temp.2 Hi limit Maximum allowable spare temperature before activating alarm
1
Temp.2 Lo limit Minimum allowable spare temperature before activating alarm
1
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
Hum.2 Hi limit Maximum allowable spare humidity before activating alarm
1
Hum. 2 Lo limit Minimum allowable spare humidity before activating alarm
1
Volt. Hi limit Maximum allowable voltage before activating alarm
1
Volt. Lo limit Minimum allowable voltage before activating alarm 1
Prop.band Cool Temperature range over which all cooling stages are equally activated or
chilled water valve modulates to full open.
Prop.band Heat Temperature range over which all heater are modulated (Staged AP)
Prop.band humid Humidity range over which all humidifier stages are equally activated.
Prop.band Dehum Humidity range over which all dehumidification stages are equally activated or
chilled water valve modulates to full open.