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Unical DUA plus, Installation And User Instruction Manual

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Unical DUA plus Installation And User Instruction Manual Download Page 16

16

Installation info

Diaphragm

Neoprene
gasket

fig. 14

Deflector

EXAMPLE WITH THE AIR SUCTION DUCT ON THE L.H. SIDE

From 

ΔΔΔΔΔ

P=15 up to 

ΔΔΔΔΔ

P=30 Pa

2.2.8 - SMOKE EVACUATION

THROUGH TWO  SEPARATE
DUCTS Ø 80
(Type B accessories)

NB:

The maximum allowed pressure
drop, according to the installation
type, must be equal to the value
indicated in the installation
examples given on page 17.

For installations with smoke
evacuation through separate
ducts, whose pressure drop value
is between 15 Pa and 30 Pa, it is
necessary to fit a diaphragm,
supplied with the boiler, inside the
smoke outlet (see fig. 13 or fig. 14).

It is necessary to place the
eflctor inside the air suction duct.

Diaphragm

Neoprene
gasket

fig. 13

EXAMPLE WITH THE AIR SUCTION DUCT ON THE R.H. SIDE

Deflector

Diaphragm

From 

ΔΔΔΔΔ

P=15 up to 

ΔΔΔΔΔ

P=30 Pa

Summary of Contents for DUA plus

Page 1: ...DUA plus 00333638 1st edition 09 2010 INSTALLATION AND USER INSTRUCTION MANUAL ...

Page 2: ...and or damage and or injury due to non observance of the manufacturer s instructions shall relieve UNICAL from any and all contractual and extracontractual liability To guarantee efficiency and correct functioning of the equipment it is legally binding to service the boiler once a year according to the schedule indicated in the relative section of this manual In the event of long periods of inacti...

Page 3: ...factor N stars based on the quality of water declared EN 13203 1 19 PMW Max pressure D H W system 20 T max Max temperature D H W system C Electrical features 21 Electrical power supply 22 Consumption 23 Protection grade D Countries of destination 24 Direct and indirect country of destination 25 Gas family 26 Supply pressure E Factory setting 27 Adjusted for gas type X 28 Space for national brands ...

Page 4: ... ducs Ø80 mm pag 16 2 2 9 On site combustion efficiency measurement pag 18 2 2 10 Gas supply line pag 19 2 2 11 Hydraulic connections pag 19 2 2 12 Electrical connections pag 19 2 3 Electrical wirings pag 20 2 3 1 Actual connection diagram pag 20 2 3 2 Jumper position pag 22 2 4 Filling of the heating system pag 23 2 5 Burner adjustment pag 23 2 6 Burner adjustment pag 24 2 7 Adaptation to the use...

Page 5: ...lating pump with built in automatic air vent C H temperature adjuster 35 85 E 45 85 T D H W temperature adjuster 40 60 only for C version Patented thermostatic diverting valve T or electric motorized diverting valve E Limit thermostat 100 C Anti freezing protection Winter Summer Anti freezing selector Mounting jig for predisposition of hydraulic connections Electronic ignition Powder painted steel...

Page 6: ... F D C W inlet R Heating return 2 1 3 4 5 6 10 12 13 15 14 11 16 17 19 18 20 21 22 24 23 9 11 12 10 7 8 9 2 1 3 4 5 6 7 8 15 16 18 17 14 19 20 22 21 23 24 25 27 26 13 1 Thermostatic diverting valve T 2 Low water pressure switch 3 C H safety valve 4 Modulating gas valve 5 Burner injectors 6 Ignition electrode 7 D H W temperature sensor 8 Main heat exchanger 9 Room sealed combustion chamber 10 Extra...

Page 7: ... 1 3 4 5 6 10 12 13 15 14 11 16 17 19 18 20 21 22 24 23 9 11 12 10 7 8 9 2 1 3 4 5 6 7 8 15 16 18 17 14 19 20 22 21 23 24 25 27 26 13 1 Electric motorized diverting valve E 2 Low water pressure switch 3 C H safety valve 4 Modulating gas valve 5 Burner injectors 6 Ignition electrode 7 D H W temperature sensor 8 Main heat exchanger 9 Room sealed combustion chamber 10 Extraction fan 11 Microswitch of...

Page 8: ... 30 of nominal load Minimum water efficiency required at 30 of nominal load Star number according to Efficiency Directive 92 42 CE Combustion efficiency at 100 of nominal load Combustion efficiency at minimum load Heat losses through the casing min max Maximum net smoke température Ts Ta Massive smoke flow rate min max Air exces lambda CO2 NOx ponderal value according to EN 297 A3 EN 483 NOx class...

Page 9: ...m unauthorised adjustment or manipulation of the system s control or regulating devices 2 2 INSTALLATION 2 2 1 PACKAGING The Dua plus boiler is delivered packaged in a strong cardboard box After removal of the boiler fron the box make sure that it is not damaged The packaging materials are recyclable then send them to the appropriate selection zones The packaging may represent grave dangers for th...

Page 10: ...he boiler on the wall of avoiding to position the boiler above an equipment whose use could be prejudicial for the boiler stove with emission of greasy vapours washing machines etc The mounting jig allows the completion of all the connections and the making of the soundness test of the full installation without the boiler in place If the boiler is not put in place immediately protect the different...

Page 11: ...e different sec tions is not less than that really needed In case it is not possible to make a venti lation opening close to the floor it will be necessary to increase its usefull section of at least 50 If an open fire is present in the same room it needs an indipendent air supply other wise the installation of a type B appliance is not permitted If in the room there are other devices which need a...

Page 12: ... for non observance of the instructions provided by the manu facturer or applicable installation regulations Direct emission into the atmosphere Natural draught boilers can discharge combustion products directly into the atmo sphere using a duct which goes through the outside walls of the building connected to a flue exhaust terminal The exhaust duct must also comply with the following requirement...

Page 13: ...m the ground or from another floor L 1800 Between two vertical terminals M 1500 Between two horizontal terminals N 1000 NOTES 1 Terminals below a practicable balcony shall be arranged in such a way as to assure that the total run of smokes from their outlet from terminal up to outlet from balcony external perimeter including the height of protection baluster if any is not less than 2 m 2 Distances...

Page 14: ...tance between the air intake duct and the flue gas outlet duct must be at least 250 mm and both end sections must be located within a 500 mm square C42 Boiler designed for connection to collective chimneys including two ducts one for the suction of combustion air and the other for the exhaust of the combustion products through coaxial or dual ducts The chimney must comply with relevant applicable ...

Page 15: ...d 1 m it is necessary to place inside the fan outlet the diaphragm supplied with the boiler see fig 11 Type C32 The maximum allowed length of the coaxial vertical pipes is 5 meters included the roof terminal for each supplementary bend the maximum allowed length will be reduced by 1 meter For installations with coaxial ducts having a length between 1 2 and 2 5 m it is necessary to place inside the...

Page 16: ...be equal to the value indicated in the installation examples given on page 17 For installations with smoke evacuation through separate ducts whose pressure drop value is between 15 Pa and 30 Pa it is necessary to fit a diaphragm supplied with the boiler inside the smoke outlet see fig 13 or fig 14 It is necessary to place the eflctor inside the air suction duct Diaphragm Neoprene gasket fig 13 EXA...

Page 17: ...n 150 mm DIMENSIONS FOR CONNECTION THE AIR INTAKE AND THE FLUE GAS DISCHARGE WITH DUAL DUCTS CONFIGURATIONS FOR SEPARATE PIPES SUCTION AND OUTLET Ø 80 Example N 1 Primary air suction from perimeter wall and flue gas discharge on roof Maximum allowable pressure loss 46 Pa Example N 1 ...

Page 18: ...oss is lower than 50 Pa which is the maximum allowed pressure loss Example of check using wide radius bends 15 m duct Ø 80 x 2 30 Pa 2x90 Ø80 long radius bends 2x4 8 Pa horizontal Ø 80 air inlet terminal 3 Pa horizontal Ø 80 terminal 5 Pa Total pressure loss 46 Pa 135 45 250 min Example N 2 fig 18 2 2 9 ON SITE COMBUSTION EFFICIENCY MEASUREMENT Type A accessories Coaxial ducts To determine combust...

Page 19: ...The electrical connections of DUA plus 30 μtank are shown in the clause WIRING DIAGRAMS par 2 3 pag 17 The boiler must be connected to the mains supply at 230 V 50 Hz This connection is to be perfectly done as foreseen by the IEC and local rules and must be earthed This fundamental requirement for safety purposes must be checked in case of doubt ask for a professionally qualified technician to che...

Page 20: ...CB A8 6 5 4 3 2 1 6 5 4 3 2 1 YEL GREEN BLUE GREEN WHITE RED BROWN P DHW CH MVD YEL GREEN BLUE BROWN PR 3 E RIV WHITE ROD A6 V2 V1 VG honeywell BROWN BROWN BLUE BLUE SICUREZZA MODULAZIONE RED E ACC 1 YEL GREEN ALIMENTAZ TRASFORMATORE ACCENSIONE A9 BROWN V BLUE YEL GREEN 6 5 4 3 2 1 7 3 2 1 SR GREEN BROWN WHITE BLUE 8 7 6 5 4 3 2 1 A3 4 3 2 1 A1 7 6 5 4 3 2 1 5 4 3 2 1 A4 A2 SOLO VER C WHITE WHITE ...

Page 21: ...cord through the extractable cable gland E Pul out the terminal blockY2 and make the connections respecting the position and the colours The female faston of the earthing wire must be introduced on the tab GND 1 L1 phase brown terminal Y2 1 N neutral bleu terminal Y2 2 earth yellow green tab GND1 Room thermostat connection ROOM STAT Get access to the terminal block Y1 Remove the link between termi...

Page 22: ...ble Jumper on Standard supply position for a good working keep the jumper in this position T C 0 1 2 3 4 5 6 7 8 9 0 32755 31137 29607 28161 26795 25502 24278 23121 22025 20987 10 20003 19072 18189 17351 16557 15803 15088 14410 13765 13153 20 12571 12019 11493 10994 10519 10067 9636 9227 8837 8466 30 8112 7775 7454 7147 6855 6577 6311 6057 5815 5584 40 5363 5152 4951 4758 4574 4398 4230 4069 3915 ...

Page 23: ...pump could be blocked pump could be blocked Before switching on the boiler it is Before switching on the boiler it is Before switching on the boiler it is Before switching on the boiler it is Before switching on the boiler it is important to restart the pump as important to restart the pump as important to restart the pump as important to restart the pump as important to restart the pump as f o l ...

Page 24: ...ES PRESSURES Adjust eventually the value by keeping locked the B nut with a 5 mm open wrench and rotating the C nut with a 8 mm open wrench fig 27 by clockwise rotation the gas pressure increases by anticlockwise rotation the gas pressure decreases B Minimum output adjustment Operate the boiler in service mode at minimum output service mode led blinking When the burner is ON check that the MINIMUM...

Page 25: ...properly check that there are no gas leaks tighten and seal the plug A fig 27 of the modulating coil fig 27 when the conversion is completed fill in the label supplied with the kit with the information required and stick it onto the boiler alongside the data plate for conversion from LPG to natural gas remove the main burner disassemble the 13 injectors of the main burner and replace them with tho...

Page 26: ...mary heat exchanger temperature below 2 C detected by the SR or SS sensors POSSIBLESOLUTION Cut the power supply close the gas valve and call the After Sale Service BOILERSTATUS The boiler is in lockout position SIGNIFICATIONOFTHEERRORCODE Fault on the DHW temperature sensor SS POSSIBLESOLUTION Ascertain that the SS sensor has the right resistance values shown on the table of the resistance values...

Page 27: ...perature of 35 C is reached By rotating completely CLOCKWISE this knob a maximum temperature of 65 C is reached 3 1 PANEL BOARD 3 D H W only With the mode selector in this position the boiler works for D H W only HEATING TEMPÉRATURE ADJUSTING KNOB With this knob it is possible to set the maximum desired temperature in the heating circuit The setting range of this temperature is between a minimum o...

Page 28: ...VICE TECHNICIANS SPECIAL FUNCTIONS LAMP FOR SERVICE PURPOSES The function of this GREEN LAMP is to indicate the activation of the SERVICE mode Continuous ON led Max output for 15 min Flashing led Minimum output for 15 min OUTER TEMPERATURE SELECTOR OPERATIONAL ONLY IF OUTER SENSOR IS FITTED Si the kit outer sensor is fitted it is possible through this button to set an outer temperature value betwe...

Page 29: ...de D H W production only Select the SUMMER operation mode acting on the selector B Turn the temperature adjusting knob D on the desired value By CLOCKWISE rotation the maximum temperature is achieved WINTER mode Heating and D H W production Select the WINTER operation mode acting on the selector B Turn both the heating temperature adjusting knob C and the D H W temperature adjusting D on the desir...

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Page 32: ...ag info unical ag com The Unical declines every responsibility for the possible inaccuracies if owed to errors of transcript or press Also reserves the right to bring those changes that it will hold necessary to it own products or profits without jeopardizing its essential characteristics ...

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