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Wall mounted air heaters

with premixed gas burner

MEC MIX C

condensation and modulation

MEC MIX F

fixed power

TECHNICAL INFORMA

TION

Summary of Contents for MEC MIX C

Page 1: ...1 Wall mounted air heaters with premixed gas burner MEC MIX C condensation and modulation MEC MIX F fixed power TECHNICAL INFORMATION...

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Page 3: ...2 WARNING Advises the reader that the next given information is extremely important and must be followed exactly Otherwise proper function of the unit and safety might be jeopardised Paragraphs writt...

Page 4: ...C MIX C 20 70 20 90 axial 11 3 10 Dimensions MEC MIX F 70 100 axial 11 3 11 Electrical wiring 12 4 CONTROL AND SAFETY 13 4 1 Description 13 4 2 General features 13 4 3 Technical data logical board 13...

Page 5: ...flow rate the gas supply pressure is within the range shown on the unit s label 2 4 GAS LEAK In case of smell of gas do not operate mobile phone switch or any device that could cause sparking immediat...

Page 6: ...qualified operator who first shall identify the mode and cause of failure The premix blower is placed in front of the burner and ensure the proper air gas ratio at any condition Iftheairintakeductort...

Page 7: ...7 3 3 TABLE OF TECHNICAL DATA MEC MIX C CONDENSATION AXIAL 3 4 TABLE OF TECHNICAL DATA MEC MIX F AXIAL...

Page 8: ...8 3 5 TABLE OF TECHNICAL DATA MEC MIX C CONDENSATION CENTRUFUGE 3 6 TABLE OF TECHNICAL DATA MEC MIX F CENTRUFUGE...

Page 9: ...nly in the Model MEC MIX C 747 120 3 7 DIMENSIONS Serie MEC MIX C condensation model 20 35 20 45 centrifuge fans Serie MEC MIX F model 35 50 centrifuge fans Values in mm gas connection air inlet exhau...

Page 10: ...MIX C condensation model 20 35 20 45 axial fans Serie MEC MIX F model 35 50 axial fans The condensate drain is present only in the Model MEC MIX C Values in mm TOP VIEW gas connection exhaust outlet...

Page 11: ...Dimensions Serie MEC MIX C condensation model 20 70 20 90 centrifuge Serie MEC MIX F model 70 100 centrifuge Values in mm gas connection gas connection air inlet air inlet exhaust outlet exhaust outl...

Page 12: ...12 3 10 Dimensions Serie MEC MIX C condensation model 20 70 20 90 axial Serie MEC MIX F model 70 100 axial Values in mm gas connection gas connection air inlet air inlet exhaust outlet exhaust outlet...

Page 13: ...on electrode EF Premix blower EV1 First stage valve EX Cascade unit connection F1 Fuse 1 6 3A F2 Fuse 2 6 3A FAN1 Air motor fan 1 FAN2 Air motor fan 2 GA1 Chrono thermostat ION Detecting electrode M1...

Page 14: ...ermostatGA1 air delivery temperature and safety control by means of a double NTC ST16 temperature probe air delivery temperature control by means of a double NTC ST08 temperature probe possibility of...

Page 15: ...out Before starting the unit check the followings the combustion chamber is free from gas if ignition cycle is simulated without gas check the unit lockout occurs after the safety time if gas supply i...

Page 16: ...esameprocedure for setting T1 Note that anyway T2 shall be higher than T1 Which shall be higher thanT0 otherwise a beep sound advises that the value is not allowed However each temperature shall be wi...

Page 17: ...parameters Then press PROG to return to the selection of the day of the week By holding pressed the OK button the lighted day programme will be copied to the next day of the week Press AUTO to leave...

Page 18: ...n via Open Therm it is possible to visualize the value closed to indicator tou By which the set point Tset can be loaded and the outdoor temperature displayed The Tset value is used to calculate the h...

Page 19: ...bles connection then put the terminal back into the slot The communication protocol allows of 50 m maximum cable length and Ohm resistance of each cable shall not exceed 5 Ohm In case of proximity to...

Page 20: ...hermostat ENCRONO type GA1 EF Fan motor of the burner FAN Fan motor of treated air ACC1 Auxiliary ignition transformer EV1 First stage valve SR Temperature control sensor STF Fire damper SA Room tempe...

Page 21: ...WIRING DIAGRAM FOR CASCADES CONNECTIONS OF MULTIPLE DEVICES VIA OPEN THERM Fig 13 NOTE 1 The cascade connection is possible with a chrono thermostat too This configuration is not used in the versions...

Page 22: ...e MOLEX 2478 J9 Modulator power supply MOD Connector 2 poles type LUMBERG 3114 terminals type LUMBERG 3111 01 L J10 Room temperature SR and air temperature SA probes 9 poles connector type LUMBERG 311...

Page 23: ...r forming near the window and the cold air entering the room through the door while open Do not install the MEC MIX COND in humid environment like in greenhouse because they aren t protected against h...

Page 24: ...g 15 A A B A E C D A min 200 cm B min 250 cm max 350 cm C min 40 cm D min 50 cm E min 33 cm A min 200 cm B min 250 cm max 350 cm C min 40 cm D min 50 cm E min 33 cm OBJECT DISTANCES MEC MIX C CENTRIFU...

Page 25: ...ducts These tabs can be used as reference for air duct and exhaust flue design The following tabs show the maximum ducts length acceptable be advised that bends or any other accessory fixed to the duc...

Page 26: ...m The maximal length of the piping model 35 type C13 is 20m If the total length exceeds 20 m the way should be modified or using the pipes of bigger diameter 80 mm which can reach 40 m of length The...

Page 27: ...ve mentioned length shall be considered for straight duct Otherwise the pressure drop shall be calculated INSTALLATION TYPE C13 WALL CROSS COAXIAL DUCT 60 100 Fig 20 MAXIMUM LENGHT ALLOWED m Mod 35 45...

Page 28: ...Mod 35 45 AIR DUCT 34 34 EXHAUST FLUE 34 34 WARNING the above mentioned length shall be considered for straight duct Otherwise the pressure drop shall be calculated MAXIMUM LENGHT ALLOWED m Mod 35 45...

Page 29: ...ight duct Otherwise the pressure drop shall be calculated WARNING the above mentioned length shall be considered for straight duct Otherwise the pressure drop shall be calculated WARNING the above men...

Page 30: ...ation The pipe used shall be suitable for connection to the heater considering that heat chemicals and vibration can stress the pipe Avoid the use of copper or iron if not stainless steel which may ru...

Page 31: ...used for control panel connection to the unit shall be protected against electromagnetic interference by using shielded cables or fixing the control cables far from power cables 7 2 INSTALLATION OF TH...

Page 32: ...lied the operator shall first replacethegasnozzlewiththeproperonefollowing the procedure described in chapters 8 2 8 2 HOW TO ADJUST THE GAS VALVE or the combustion s parameters Gas valve function The...

Page 33: ...set the heater at the maximum heat output 6 checktheCO2valueisstillwithintherequiredrange if not adjust the regulator n 8 which refers to the maximum output 7 repeat from step 3 till the CO2 value is...

Page 34: ...n accordance to the local regulation about gas fired heating system However it is recommended to perform the unit maintenance and general cleaning of the unit exhaust test heat exchanger and air blowe...

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Page 36: ...36 A2B Accorroni E G s r l Via d Ancona 37 60027 Osimo An Tel 071 723991 r a Fax 071 7133153 web site www accorroni it e mail a2b accorroni it...

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