Magikal HYDRO GARDA 18 Techical Manual

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TECHINCAL MANUAL

 HYDRO GARDA 18

 HYDRO GARDA 21

 HYDRO GARDA 28

ENGLISH

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Page 1 TECHINCAL MANUAL  HYDRO GARDA 18  HYDRO GARDA 21  HYDRO GARDA 28 ENGLISH...
Page 3: Table Of Contents
UNI 10683 (Heat generators powered by wood or other solid fuels. Verification, installation, control and maintenance) The laws and regulations in force in the country of use of the Magikal product may provide for higher safety requirements or identify risks other than those listed in the manual.
Page 4: Technical Data
1. Technical data GARDA 18 Garda 21 Garda 23 TECHNICAL DATA Nominal Reduced Nominal Reduced Nominal Reduced Thermal input introduced kW 16.4 27.8 10.07 Rated thermal input kW 15.3 19.4 25.5 to clearance - kW to water - kW 17.6 Performance -% 94.3 91.8...
Page 5: Installation
Installation External air intake and fume exhaust For proper operation, the thermo-stove must be positioned in a place where the air necessary for combustion can flow. Air inflow must take place directly through permanent openings (according to UNI 10683) applied on outside-facing walls having the following features: ...
Page 6  These connections, provided for by the UNI 10683 standard, guarantee the discharge of combustion fumes even in the event of a temporary lack of electrical current. (Fig. 10). Combustion air inlet. “External” insulated double-wall flue pipe L. “Combustion air” input minimum section 100 Ø80 or Ø100 flue ducts min 1500mm cm².
Page 7: Water Connection
Water connection Available models:  Only residential heating system.  Heating system and domestic hot water production. (This version is only available in the Garda 21 and Garda 28 models). Model Components Heating only  High efficiency 2.5/7 Wilo circulator ...
Page 8 Below is the diagram for the hydraulic connection of the product: Coupling Garda 18 Garda 21 Garda 28 A - Hot water outlet * ½” - M B - Cold water inlet ½” - M C - System return ¾” - M D - System flow ¾”...
Page 9 within the heating unit to 70° (Th21 - Ih21) and combustion is regulated on the basis of this value. When there is no longer any request, the Sanitary Function ends at timer expiration (T68) set to 20sec by default, repositioning the heating unit thermostat to the original temperature. It is also advisable to use the sanitary function with heating unit temperatures not below 65°, in order to optimize production of hot water and avoid the risk of cold outflow.
Page 10 The operation of the Garda thermo-stove is a priority compared to the work of the combined boiler, since the most economical fuel is pellet-operated. The control unit is able to automatically manage the work between the two machines by connecting a 3- way motorized valve.
Page 11  Connect the terminals of the 3-way motorized valve P2 to the Aux1 output of the electronic control unit System heating logic: By setting parameter P26 = 2, you choose the configuration shown in the figure above. The circulator is active if the water temperature in the boiler (S1) exceeds the value of the Th19 thermostat. To avoid water freezing, the circulator is activated if water temperature in the boiler drops below 5°...
Page 12: Electronic Central Unit
System heating logic: If the temperature in boiler S1 is greater than the Pump activation thermostat equal to 50° (Th19), the system heats the water of the Puffer if the difference between S1 and S2 is greater than 5°C (Th57). If the water temperature in the boiler (S1) exceeds the 80°...
Page 13 Circuit diagram Display LCD RS485 24 F Thermocouple Motorized 23 F - 26 Valve Ambient probe - 22 N Thermostat GND 28 21 N.O. 20 N.C. GND 29 19 COM Flow switch Pump 1 18 F GND 31 Boiler Probe 17 N (Garda) +V 33...
Page 14: Ambient Probe - Ambient Thermostat
Ambient probe - Ambient thermostat To configure the work of the thermo-stove with an ambient probe or room thermostat, parameter A19 must be changed, if in clamps 27 and 28 of the printed circuit board is connected to: Ambient probe (as installed by the factory) set A19 = 1 (already set in Default). The supplied NTC 10K probe, the reading range is 0 ÷...
Page 15: Technical Parameters
Technical parameters The following are the default technical parameters already prepared in the printed circuit board. To make changes to parameters, access through the Display, select the System Menu and enter the password: 6593. Auger Garda Garda Garda Parameter Description Function Auger time ON at Ignition Auger time ON at Stabilization Auger time ON at Power 1...
Page 16 Heating fan (Optional) Garda Garda Garda Parameter Description Function Power 1 Volt Power 2 Volt Power 3 Volt Power 4 Volt Power 5 Volt Heating management: 1=Heating power as combustion power; 2=Heating power proportional to flue gas temperature; 3=Heating power proportional to room temperature Thermostats Garda...
Page 17 Shutoff Thermostats By setting the temperature value for each operating power, if the fume temperature falls below the value set for the corresponding power in operation, the system goes into Shutdown with Er03. Garda Garda Garda Parameter Function Description Th35 Shutoff at Power 1 °C Th36...
Page 18 Minimum duration of Standby phase Final brazier cleaning in Standby Run time before switching to Block 1200 1200 hours System running time before the message Cleaning appears hours Delay of restoration of original value of Boiler Thermostat in case of ceased domestic water request Delay in activation of maximum Heating Fan if fume temperature >...
Page 19 Output P/V3 for Pump 2 or solenoid valve Output P/V3 for Output under Thermostat 2 Output AUX1 Disabled Output AUX1 for Safety Valve/Auger2 Output AUX1 for Output under Thermostat Output AUX1 for Summer/Winter Valve AUX1 Output AUX1 for Pump 2 or solenoid valve Output AUX1 for Output under Thermostat 2 Output configurability legend: ...
Page 20 Switch-on command from Power-off sends to Check- Warm Air Fan stops if Ambient temperature > Ambient thermostat/sensor Warm air fan at Power 1 if Ambient temperature > Ambient thermostat/sensor For boiler temperature> Boiler thermostat, the system goes into Modulation For boiler temperature > Boiler thermostat, the system goes first to Modulation and then, if boiler temperature >...
Page 21 Delta-T Menu Garda Garda Garda Parameter Function Description Stabilization Delta °C Fume Delta-T for automatic calibration of Warm Air Fan °C Ambient Delta-T for automatic calibration of Warm Air Fan °C Water Delta-T for combustion automatic calibration °C Delta to be added to Boiler Thermostat to switch from °C Modulation to Standby at the end of T43 and if A13=1 or 2 Power-up Delta...
Page 22: Errors And Remedies
Errors and remedies Errors appear in the main screen of the display, at the top right: Mar 14:26 Service Power-up Er05 23° 65° P2 Auto Er01 Alarm PROBLEM Water temperature in the boiler reached 100°C and the manual reset safety thermostat was activated.
Page 23 Circulator defective. If the water temperature in the boiler is > 55°C, there is a voltage of 230Volt (VAC) between the two contacts N and L of the circulator terminal board. If this Voltage is not detected, make the same measurement directly on terminals 7 and 8 of the control unit to check if there is a problem on the external connection.
Page 24 Er03 Alarm PROBLEM The thermo-stove has switched off accidentally (the temperature has dropped below 45°C). REMEDY Unblock the boiler by pressing the on/off button on the control panel for a long time. CAUSES A. Pellet tank empty, re-load the pellet tank. Before starting the ignition again, fill the empty auger by means of the “Manual loading”...
Page 25 thermo-stove. D. Technical parameters incorrect. Check parameter P26 (hydraulic system configuration). It must be set up to reflect the installation of the product in question (See page 9). Boiler Probe defective. Take note of the indication of the water temperature in the boiler on the control display;...
Page 26 Er07 Alarm PROBLEM The electronic control unit of the thermo-heater does not detect the signal of the smoke extractor Encoder (smoke extractor speed in rpm). REMEDY After allowing the boiler to cool down, release the boiler by pressing the on/off button on the control panel for a long time.
Page 27 Er09 Alarm PROBLEM The water pressure in the boiler is lower than the value set in technical parameter SP01 (300mbar). REMEDY Once the correct pressure has been restored, release the thermo-stove by long pressing the on/off button on the control panel. CAUSES A.
Page 28 D. Pressure transducer not working. Measure the supply voltage of the pressure transducer on contacts 37 and 39 of the electronic control unit. If the Voltage is different from 5 Volt (VDC), replace the electronic control unit that does not supply the pressure transducer. Otherwise, measure the voltage of the pressure transducer signal on contacts 38 (+) and 39 (-) of the electronic control unit.
Page 29 control unit. The glow plug resistance should be about 150 Ὠ (150 Ohm) +/- 5%. If the measured value is very different from the value displayed or is= ∞ (infinite), the glowplug is to be replaced because it is damaged or even interrupted. If the brazier is empty: A.
Page 30 NOTES If the interruption of the power supply is less than 1 minute, the boiler returns to the previous operating state when it was interrupted. If the interruption of the power supply is between 1 and 50 minutes, when power is restored, the boiler defaults to Power Recovery state, by performing the shutdown phase and then automatically turning on again.
Page 31 REVISION: 03 11/07/2018...

This manual is also suitable for:

Hydro garda 21 Hydro garda 28