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FC66002179 – Rev.00

Fig.17

Wiring diagram for Micronet

For every fan coil unit you must provide a switch (

) with

opening contacts with a distance of at least 3mm

and a suitable fuse (

Key to symbols used in wiring diagram:

Minimum speed

Fuse (not supplied)

Medium speed

Line switch (not supplied)

Maximum speed

economy Contacts powered at 230V = economy mode enabled

(LARGE solution)

Phase

ON-OFF Contacts powered at 230V = remote OFF (LARGE and

SMALL solution)

PE Ground

Electric

fan

Neutral

VHC

Water valve 230V on-off

Valve for additional heat

exchanger

Water valve 230V on-off cooling

Valve for standard heat

exchanger

Water valve 230V on-off heating

Economy contact

White common motor

Remote ON/OFF contact

Black maximum speed

Water sensor

Blue medium speed

Air sensor

Red Minimum speed

MS Flap

microswitch

……

Electrical connections to be made by installer

Содержание FLAT MICRONET

Страница 1: ...FLAT MICRONET MICROPROCESSOR CONTROL SOLUTION ...

Страница 2: ...o water temperature 11 Technical data and operating limits 13 Controller installation configuration 14 Function configuration 14 C1 Standard two pipes 14 C3 two pipes one valve 15 C5 four pipes two valves 15 C7 four pipes 16 C13 two pipes automatic changeover water side 16 C14 two pipes one valve automatic changeover water side refer to diagram 2 17 Instructions for installing Micronet 18 Connecti...

Страница 3: ...ach controller The chiller or heat pump may also be connected to the supervision system and the software program analyses system data to adapt operation to the actual conditions The Small solution sets up a Master Slave system up to 126 slave terminals in which one of the Microprocessor controllers plays the role of Master and controls all of the other slave elements In this case as well the conne...

Страница 4: ...ambient temperature set point Each of the slaves maintains the management of the fan speed and the ambient temperature regulation is permitted with a delta of 2 C around the set point value sent by the master The yellow led if on indicates the presence of the communication over the serial line the Master is identified by the flashing yellow light Main functions and features Regulation of air tempe...

Страница 5: ...e measured by the sensor The operation of the controller in the above described modes is illustrated in the appended diagrams Fan control in AUTO mode heating and cooling In operation with a constant fan speed selector on V1 V2 or V3 the ON OFF hysteresis of the fan is 0 5 C around the setpoint 0 5 C 1 5 C 2 C 2 5 C 3 C 0 5 C 1 5 C 2 C 2 5 C 3 C Fan speed V3 V2 V1 TSET C TAIR C HEAT COOL Button fo...

Страница 6: ...the unit is currently set in the cooling mode the fan coil unit may actually be running or standing by for a call from the thermostat o RED LED ON the unit is currently set in the heating mode the fan coil unit may actually be running or standing by for a call from the thermostat o BLUE AND RED LEDS ON fan coil unit operation is not enabled the water temperature permits neither heating nor cooling...

Страница 7: ...talled on an FLAT fan coil unit the incorporated air temperature sensor will have to be replaced with a sensor for on board installation provided with an extension cord included in the on board installation kit code FYKMB ADDRESS DIPSWITCHES Group of 7 dipswitches whose configuration serves to ascribe a network address to the controller based on the conversion table included in the Installation bo...

Страница 8: ... ON off 19 off off ON off off ON ON 59 off ON ON ON off ON ON 20 off off ON off ON off off 60 off ON ON ON ON off off 21 off off ON off ON off ON 61 off ON ON ON ON off ON 22 off off ON off ON ON off 62 off ON ON ON ON ON off 23 off off ON off ON ON ON 63 off ON ON ON ON ON ON 24 off off ON ON off off off 64 ON off off off off off off 25 off off ON ON off off ON 65 ON off off off off off ON 26 off...

Страница 9: ...N off ON ON off ON ON 115 ON ON ON off off ON ON 92 ON off ON ON ON off off 116 ON ON ON off ON off off 93 ON off ON ON ON off ON 117 ON ON ON off ON off ON 94 ON off ON ON ON ON off 118 ON ON ON off ON ON off 95 ON off ON ON ON ON ON 119 ON ON ON off ON ON ON 96 ON ON off off off off off 120 ON ON ON ON off off off 97 ON ON off off off off ON 121 ON ON ON ON off off ON 98 ON ON off off off ON off...

Страница 10: ... this manual Fig 5 List of dipswitches and respective functions Dipswitch N Function Position OFF ON 1 Cooling heating changeover Local Remote 2 Cooling heating changeover Manual Automatic 3 Automatic cooling heating changeover according to temperature of Air not available Water 4 Neutral zone for automatic cooling heating changeover according to air temperature 5 C 2 C 5 Presence of valve in wate...

Страница 11: ...ween the temperature set on the thermostat and the actual room temperature This function is turned on by setting the speed selector on Auto In the other positions the fan will simply be switched on and off After the set temperature has been reached the water valve will close In the cooling mode the fan will continue running at minimum speed even after the cooling circuit valve has closed In the he...

Страница 12: ... time or when the power supply is restored after being interrupted Note While the timing function is active the thermostat and function selector will be disabled The timing function is available only for valveless units and only during summertime operation The timing function is not available for wall mounted Micronet controllers On off according to water temperature According to the water tempera...

Страница 13: ... data and operating limits Storage temperature from 40 C to 85 C Operating temperature from 0 C to 40 C Sensor precision 0 2 C Max current on terminals V1 V2 V3 fan speed 1 1 A Max current on terminals R and V Valve 0 15 A 17 22 30 37 T water C HEAT COOL Standby Heating hysteresis Cooling hysteresis Enabling ...

Страница 14: ...On Off On Off Function configuration The Micronet controller can be configured in different ways among the various functions available you can enable the ones you wish specifically to implement The various configurations are set by positioning the dipswitches on the electronic card accordingly C1 Standard two pipes System characteristics Number of pipes 2 Valve NO Heating element NO List of functi...

Страница 15: ...ater temperature Position of dipswitches for configuration 3 1 2 3 4 5 6 7 Off Off Off Off On Off Off On Off C5 four pipes two valves System characteristics Number of pipes 4 Valve YES Heating element NO List of functions activated in configuration 5 Room thermostat con with control of ON OFF valve for four pipe systems Local manual Cooling Heating changeover On off according to water temperature ...

Страница 16: ...troller Position of dipswitches for configuration 7 1 2 3 4 5 6 7 Off Off Off Off Off Off On On Off C13 two pipes automatic changeover water side System characteristics Number of pipes 2 Valve NO Heating element NO List of functions activated in configuration 13 Room thermostat with control over air temperature Automatic Cooling Heating changeover according to water temperature Timing not availabl...

Страница 17: ... Number of pipes 2 Valve YES Heating element NO List of functions activated in configuration 14 Room thermostat with control of ON OFF valve for two pipe systems Automatic Cooling Heating changeover according to water temperature Position of dipswitches for configuration 14 1 2 3 4 5 6 7 Off On On Off On Off Off On Off ...

Страница 18: ...following general structure Pull up pull down and termination resistors are already present inside each MICRONET controller and may be activated via the jumpers provided The certainty of logic levels is obtained with the pull up and pull down resistors These resistors are also present in the RS232 RS485 serial converter supplied with the software In this case only the termination resistor on the l...

Страница 19: ... down and termination resistors jumpers J3 J4 and J5 on the master controllers and as in the previous case only the termination resistor on the last controller in the network Jumper J5 The network connection scheme entails a simple parallel connection which must 1 Comply with the polarity of the connection indicated with A and B 2 Avoid ground loops ground shield at one end only V1 Minimum speed V...

Страница 20: ...FC66002179 Rev 00 20 Converter RS232 RS4854 USB RS485 chiller ...

Страница 21: ...than 1000 m The length of each secondary branch must be less than 20 m ATTENZIONE Always use shielded cable AWG24 ATTENZIONE Suggested colors for network cables A Brown B yellow Terminal N2 Terminal N1 Terminal NN Terminal N3 RS232 RS4854 Converter or USB RS485 converter Main Branch L 1000 m Secondary branch L 20m ...

Страница 22: ... strongly recommended to implement ONLY ONE main branch as shown in the picture below Terminal Nn Terminal N1 Terminal N3 RS232 RS485 converter main branch at 1st level L 20m Terminal N4 2nd level Terminal NN Terminal Nn 1 main branch 2nd level L 1000m L 20m Terminal N2 ...

Страница 23: ...ing to the fastening slots 5 x 8 mm on the controller base fig 7 Fig 7 4 Make the electrical connections to the control terminal block 5 Fix the controller base with screws to the previously drilled wall 6 Fit the top part of the controller back on its base taking care to ensure that the selectors are in the same position as when the controller was disassembled see step 2 and reapply the screw 7 M...

Страница 24: ...ntroller to the support using the two screws provided Fig 9 Figure 9 shows how the controller and support should be assembled if the controller is installed on the right side of the fan coil unit if the controller is installed on the left side of the fan coil unit the support will have to be turned by 180 Fig 9 Important check that all of the terminals necessary for the electrical connections prov...

Страница 25: ...ig 10 6 Important position the air temperature sensor black and water sensor white Figs 12 to 17 following the directions provided in the relevant sections herein 7 Set the cabinet back on top of the fan coil unit securing it with the four screws fig 11 which have been previously unscrewed fig 8 Fig 10 Fig 11 ...

Страница 26: ...s switched into the self diagnosis mode Note if you allow more than 5 seconds to elapse you will automatically exit the self diagnosis mode 5 In the self diagnosis mode every position of the function selector corresponds to the simulation of an output namely Position Actuation Terminals AUTO Valve N V Minimum speed N V1 Medium speed N V2 Maximum speed N V3 O Second valve N RE By moving the functio...

Страница 27: ...66002179 Rev 00 27 Position of the air temperature probe black for the FLAT unit You have to position the air probe inside the plastic cochlea fig 12 Fig 12 Location for positioning air temperature probe ...

Страница 28: ...ems the water sensor must be positioned on the exchanger Figs 13 and 14 Fig 13 Fig 14 For fan coil units for valveless four pipe systems the water sensor must be positioned on the heating circuit exchanger Fig 15 Fig 15 For fan coil units for two pipe systems with valve the water sensor must be positioned at the valve inlet on the branch coming from the plumbing system Fig 16 Fig 16 For fan coil u...

Страница 29: ...30V economy mode enabled LARGE solution L Phase ON OFF Contacts powered at 230V remote OFF LARGE and SMALL solution PE Ground M Electric fan N Neutral VHC Water valve 230V on off RE Valve for additional heat exchanger VC Water valve 230V on off cooling V Valve for standard heat exchanger VH Water valve 230V on off heating RM Economy contact WH White common motor EX Remote ON OFF contact BK Black m...

Страница 30: ...FC66002179 Rev 00 30 Wiring diagram for Micronet For every fan coil unit you must provide a switch IL with opening contacts with a distance of at least 3mm and a suitable fuse F ...

Страница 31: ...FC66002179 Rev 00 31 ...

Страница 32: ...2179 Rev 00 32 Company UNI EN ISO 9001 and OHSAS 18001 certified Galletti S p A reserves the right to change the technical data contained in this document with the aim of upgrading the product when necessary ...

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