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Summary of Contents for Galletti FLAT MICRONET
- Page 1 FLAT MICRONET MICROPROCESSOR CONTROL SOLUTION...
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Page 2: Table Of Contents
General characteristics ....................3 Main functions and features: ..................4 Function selector ..............................5 Fan control in AUTO mode (heating and cooling) ..................... 5 LED indications..............................6 Identifying the operating mode when the unit is disabled ..................6 Instructions for installing Micronet ................7 Setting the function dipswitches: ...................... -
Page 3: General Characteristics
General characteristics Micronet is a Microprocessor control panel designed to govern the operation of indoor units installed as part of the ERGO system, Large or Small version. The controllable units include FLAT fan coil units. The LARGE solution provides for all controllers (up to 126) to be connected to the supervisor software via an RS485 connection bus with Modbus protocol integrated in each controller. -
Page 4: Main Functions And Features
In the LARGE version, the supervisor software can ascribe 4 degrees of autonomy to the MICRONET controller, depending on the level of remote control that has been assigned via the software: LOCAL: all functions may be accessed from the local control panel, including speed and temperature selection and setting of the cooling or heating mode. -
Page 5: Function Selector
Selector of operation LED indicating cooling mode Button for selecting Cooling/Heating SUPERVISOR NETWORK LED Thermostat LED indicating heating mode Function selector The function selector enables the user to select the desired function and fan speed of the unit. Specifically, the following options are available: OFF: to shut down the unit AUTO: automatic selection of fan speed according to the difference between the... -
Page 6: Led Indications
Temperature scales The serigraphic pattern around the thermostat selector represents a temperature scale which ranges from a minimum to comfort to maximum setting. Depending on the operating mode - cooling or heating - the scale will correspond to different temperatures as shown in figure 2. Temperature scales Cooling Heating... -
Page 7: Instructions For Installing Micronet
Instructions for installing Micronet Important: The Micronet controller has been designed for fan coil units belonging to the FLAT series; should you wish to use it to control other types of units, you must make sure that the operating limits are complied with (see relevant section herein). - Page 8 The table below shows the configuration of address dipswitches Configuration of address dipsw. Configuration of address dipsw. Address Address FC66002179 – Rev.00...
- Page 9 Configuration of address dipsw. Configuration of address dipsw. Address Address FC66002179 – Rev.00...
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Page 10: Setting The Function Dipswitches
Setting the function dipswitches: 1. Take off the controller cover by removing the screw at the bottom. Important: to make subsequent assembly easier, be careful not to change the position of the two rotary controls (function selector and thermostat) and their respective potentiometers on the electronic card. 2. -
Page 11: Room Thermostat With Control Over Air Temperature
Description of functions Room thermostat with control over air temperature: Fan speed is automatically adjusted based on the difference between 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. - Page 12 Timing Available only for Micronet panels installed directly on fan coil units, this function starts up the fan at regular intervals (every 10 min.) and runs it at medium speed for 2 min. once the temperature inside the room has reached the level set on the thermostat.
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Page 13: Technical Data And Operating Limits
Diagrams illustrating how operation is enabled according to water temperature Standby Heating Cooling COOL HEAT hysteresis hysteresis Enabling 37° 30° 22° 17° T water (°C) Technical data and operating limits: Storage temperature: from -40°C to +85°C Operating temperature: from 0°C to 40°C Sensor precision: ±... -
Page 14: Controller Installation Configuration
The following pages provide an illustration of all possible Micronet configurations, along with the respective dipswitch sequences, any special operating features and specific notes. Choose the configuration that is best suited to your installation’s requirements and apply it as described. Controller installation configuration Depending on where you plan to install the MICRONET panel, you must first set dipswitch 8 as shown below Position of dipswitch 8 for configuration 5:... -
Page 15: C3: Two Pipes, One Valve
C3: two pipes, one valve System characteristics Number of pipes: Valve: Heating element: List of functions activated in configuration 3: • Room thermostat with control of ON OFF valve for two-pipe systems • Local manual Cooling/Heating changeover • On / off according to water temperature Position of dipswitches for configuration 3: C5: four pipes, two valves System characteristics... -
Page 16: C7: Four Pipes
C7: four pipes System characteristics Number of pipes: Valve: Heating element: List of functions activated in configuration 7: Room thermostat with control over air temperature: • Local manual Cooling/Heating changeover • On / off according to water temperature • • Timing (not available for wall-mounted Micronet controller): Position of dipswitches for configuration 7: C13: two pipes, automatic changeover water side... -
Page 17: C14: Two Pipes, One Valve, Automatic Changeover Water Side - Refer To Diagram 2
C14: two pipes, one valve, automatic changeover water side - refer to diagram 2 System characteristics Number of pipes: Valve: Heating element: List of functions activated in configuration 14: Room thermostat with control of ON OFF valve for two-pipe systems •... -
Page 18: Instructions For Installing Micronet
Instructions for installing Micronet Connection to the RS485 communication network The communication network relies on a simple shielded 2-conductor cable, directly connected to the RS485 serial ports of the controllers (terminals A, B and GND). "Use AWG24 cable (diameter 0,5mm) to realize the network"... -
Page 19: Small" Solution
“LARGE” Solution (RS232-RS485 or USB-RS485 converter supplied with the software) Activate only the termination resistor on the last controller in the network (Jumper J5) Note: “LARGE” Solution (serial converter without pull-up/pull-down and termination resistors) Activate the pull-up/pull-down and termination resistors (jumpers J3, J4 and J5) on the controller near the converter and, as in the previous case, only the termination resistor on the last controller in the network (Jumper “SMALL”... - Page 20 Converter RS232-RS4854 (USB-RS485) chiller FC66002179 – Rev.00...
- Page 21 Suggested layout for the network implementation Main Branch ( L<1000 m ) Terminal N3 Secondary branch (L < 20m) Terminal NN RS232-RS4854 Converter or USB- RS485 converter Terminal N2 Terminal N1 Warning: The main branch length must be less than 1000 m The length of each secondary branch must be less than 20 m ATTENZIONE: Always use shielded cable AWG24...
- Page 22 When more than one level has to be connected, is strongly recommended to implement ONLY ONE “main branch”, as shown in the picture below: main branch 2nd level; L<1000m Terminal Nn+1 (L < 20m) Terminal NN 2nd level Terminal N4 Terminal N3 main branch at 1...
- Page 23 Instructions for wall mounting 1. Remove the fastening screw of the controller (fig. 5). Fig.5 Fig.6 2. Make sure the speed selector is positioned on OFF and the temperature control is set in the comfort position; then remove the top part of the controller (fig. 6). 3.
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Page 24: Installation On The Support And Fan Coil Unit
Installation on the support and fan coil unit The Micronet controller can be installed on either side of the fan coil unit using a support or thanks to an on-board installation kit (code FYKMB) composed of: Remote air temperature sensor (cable length 1.5 m) •... - Page 25 5. Fit the controller-support assembly to the fan coil unit using the bayonet couplings (Fig.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...
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Page 26: Self-Diagnosis Procedure
Self-diagnosis procedure To check the efficiency of the Micronet controller at the time of installation or in order to locate a fault, it is possible to manually actuate all of the outputs provided (fan, valves, heating element) thanks to the self-diagnosis function. -
Page 27: Position Of The Air Temperature Probe (Black) For The Flat Unit
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 FC66002179 – Rev.00... -
Page 28: Positioning Of Water Temperature Sensor (White) For Flat Unit
Positioning of water temperature sensor (white) for FLAT unit Use the special copper holder for the water sensor and position it as described below, depending on the type of installation. Note: the water temperature sensor is an optional accessory for the Micronet wall-mounted controller. For fan coil units for valveless two-pipe systems, the water sensor must be positioned on the exchanger •... -
Page 29: Wiring Diagram For Micronet
Fig.17 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). Key to symbols used in wiring diagram: Minimum speed Fuse (not supplied) Medium speed Line switch (not supplied) -
Page 30: Wiring Diagram For Micronet
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). FC66002179 – Rev.00... - Page 31 FC66002179 – Rev.00...
- Page 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. FC66002179 – Rev.00...
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