20120704

User manual for control unit mC2 Microchiller:

CELESTOXFORDUMBRA & UMBRA MAXMAROON & MAROON MAX ETON CRIMSON & CRIMSON MAXSIGMA 2002BETA

Control unit mC2

Swegon reserves the right to alter specifications2 www.swegon.com

SE.mC2 microschiller_user 120704

Source language of document is italian

Symbols on the display

Symbol ColourMeaning Reference refrige-

rant circuitLED on LED flashing1;2 Yellow Compressor 1 and/or 2 on Start demand 1

3;4 Yellow Compressor 3 and/or 4 on Start demand 2

Yellow At least one compressor on 1 and/or 2

Yellow Pump/fan on Start demand

Yellow Condensor fan on

Yellow Defrost active Defrost demand 1 and/or 2

Yellow Heater on

Red Alarm active

Yellow Heat pump mode (P6=0) Start demand 1 and 2

Yellow Chiller mode (P6=0) Start demand

Swegon reserves the right to alter specifications www.swegon.com 3

SE.mC2 microschiller_user 120704

Key Button Unit status Button press modeLoading default values Press at power onGo up a sub-group inside the programming area, until exiting (saving changes to E2PROM)

Press once

In the event of alarms, mute the buzzer (if present) and deactivate the alarm relay Press onceAccess the direct parameters Press for 5 sSelect item inside the programming area and display value of direct parameters / con-firmthe changes to the parameter

Press once

+

Program parameters after entering password Press for 5 s

Select top item inside the programming area Press once or press and holdIncrease value Press once or press and hold

Switch from standby to chiller mode (P6=0) and vice-versa Press for 5 s

Select bottom item inside the programming area Press once or press and holdDecrease value Press for 5 s

Switch from standby to heat pump mode (P6=0) and vice-versa Press for 5 s

+

Manual alarm reset Press for 5 s

Immediately reset the hour counter (inside the programming area) Press for 5 s

+

Force manual defrost on both circuits Press for 5 s

Keys and functions

Parameters The parameters are divided into 4 different types, according to their level of access by the user (password) and their fun-ction.

The calibration parameters are set in the factory and there is no need to modify them. If it proves necessary to alter settings, contact the approved service organisation. The warranty will be imme-diately terminated if the calibration parameters are arbitrarily modified.

Display indication

Parameter and description

b01 Value read by probe B1b02 Value read by probe B2b03 Value read by probe B3b04 Value read by probe B4b05 Value read by probe B5b06 Value read by probe B6b07 Value read by probe B7b08 Value read by probe B8b09 Driver 1 evaporator temperatureb10 Driver 1 evaporator pressureb11 Driver 1 superheatingb12 Driver 1 saturation temperatureb13 Driver 1 valve positionb14 Driver 2 evaporator temperatureb15 Driver 2 evaporator pressureb16 Driver 2 superheatingb17 Driver 2 saturation temperatureb18 Driver 2 valve positionb19 Temp. probe at the outlet of the external coil c1b20 Temp. probe at the outlet of the external coil c12

Display indication

Parameter and description

c10 Compressor 1 timer c11 Compressor 2 timer c12 Compressor 3 timer c13 Compressor 4 timer c14 Operation timer thresholdc15 Hour counter evaporator pump/fan 1c16 Hour counter condenser backup pump/fan 2

r01 Cooling set pointr02 Cooling differential r03 Heating set point r04 Heating differential r21 Second cooling set point from external contactr22 Second heating set point from external contact

H06 Cooling/Heating digital inputH07 ON/OFF digital input H96 Software version Driver 2H97 Software version Driver 1H98 Expansion software version

H99Software version (to be displayed after instrument start-up)

Swegon reserves the right to alter specifications4 www.swegon.com

SE.mC2 microschiller_user 120704

Remote On-Off and Summer-Winter enabling

Procedure to enable the input on the control:

1 Press for 5 sec. the key

2

eller

Select the parameters “H” using the keys or

3 Confirm the selection pressing the key

4

eller

Select the parameter “H07” for ON-OFF and/or ”H06” for SUMMER-WINTER

5 Confirm the selection pressing the key

6

eller

Modify the value from “00” to “01” using the keys or

7 Confirm the selection pressing the key

8 Return to main screen pressing three times the key

Enabling “ON-OFF remote” and/or ”SUMMER-WINTER remote” it is not possible to change the operating mode of unit if the digital input is open.

Common alarm contactsThe common alarm contacts are indicated in the wiring diagram with the terminals “100-101” or “90-91” and are normally open contacts which changes the status when any alarm occurs in the unit.

The potential free contact for “remote ON-OFF ” and/or SUMMER- winter must be connected to the terminals shown on the wiring diagram with “IE” or “IE1” and on the control the input must be enabled.

Larm When an alarm occurs, the control acts as follows: – enables the buzzer (if available) – enables the alarm relay – the temperature flashes – displays alternatively the alarm code and the temperature

If alarms other than those described below are displayed, contact the approved service orga-nisation.

Alarm dis-played

Alarm type Compressor Pump Fan Heater Alarm

HP1 High pressure OFF Compressor circuit1-2 - ON(60”) - ONHP2 High pressure OFF Compressor circuit3-4 - ON(60”) - ONLP1 Low pressure OFF Compressor circuit1-2 - OFF 1 - ONLP2 Low pressure OFF Compressor circuit3-4 - OFF 2 - ONTP General overload OFF OFF OFF - ONtC1 Circuit 1 overload OFF Compressor circuit1-2 - OFF 1 - ONtC2 Circuit 2 overload OFF Compressor circuit3-4 - OFF 2 - ONFL Flow controller alarm OFF OFF OFF - ON E1 Probe B1 alarm OFF OFF OFF OFF ONE2 Probe B2 alarm OFF OFF OFF OFF ON E3* Probe B3 alarm OFF OFF OFF OFF ONE4* Probe B4 alarm OFF OFF OFF OFF ON E5 Probe B5 alarm OFF OFF OFF OFF ONE6 Probe B6 alarm OFF OFF OFF OFF ON E7* Probe B7 alarm OFF OFF OFF OFF ON E8* Probe B8 alarm OFF OFF OFF OFF ON A1 Frost alarm circuit 1 OFF Compressor circuit1-2 - OFF 1 - ON A2 Frost alarm circuit 2 OFF Compressor circuit3-4 - OFF 2 - ON