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25

MANOMETER

It shows the water pressure inside the
heating circuit, whose value, in cold
condition,should not be lower than 0,8/1 bar.

Note that if the pressure decreases below
0,4/0,6 bar the boiler goes into lockout, not
allowing the ignition of the burner.
In this case reinstate the minimum required
filling pressure (0,8/1 bar)following the
instructions given on

 figure 12.

POWER ON SIGNAL LAMP

The function of this GREEN lamp is to show
that the power to the boiler is ON; to get the
boiler ON, position the "A" switch on 

"

I

"

position.

.

BURNER IN OPERATION
SIGNAL LAMP

The function of this GREEN lamp is to show
the proper operation of the burner

FAULT INDICATION LAMPE

The function of this RED lamp is to show an
operation fault.
By depressing on the RESET button (N) it is
possible to see the error code given by the
combination od the flashing leds. See
paragrapf  2.8 "FAULT FINDING AND
REPARATIONS".

BURNER LOCKOUT
 WARNING LAMP

La fonction de ce témoin (ROUGE) est de
signaler l’intervention du dispositif de mise
en sécurité du brûleur.

MANUAL RESET BUTTON

This button allows the re-establishment of
the boiler operation after a lockout of the
burner control and to know the error code
given by the combination of the flashing leds
(burner lockout warning lamp). (témoin de
défaut allumé).

SPECIAL FUNCTIONS BUTTON
(FOR SERVICE PURPOSES)

This button allows the activation of the
SERVICE mode.  (see paragraphe 2.6
"Burner adjustment). To reset this mode
before the expiring time depress on the
manual reset button.

WARNING! 

OPÉRATIONS RÉSERVÉD

ONLY TO SERVICE 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 between 

-20°C

(completely counterclockwise

) and 

 10°C

(

completely clockwise)

.

If the outer temperature is equal or lower
than the one selected by the selector "Q"
the boiler temperature will be the one adjusted
on the  "C" button.
If the outer temperature is higher than the
one selected by the selector "Q"the boiler
temperature will decrease linearly,
independently from the one adjusted  on the
"C" button.

WARNING! 

OPÉRATIONS RÉSERVÉD

ONLY TO SERVICE TECHNICIANS.

MODULATING ROOM
THERMOSTAT

Warning:

 The mounting of a modulating

room thermostat imply the modification of
the functions of the heating temperature
adjuster (C) and D.H.W. temperature
adjuster (D).
Refer to the specific instructions supplied
with the modulating thermostat.

F

G

80°

60°

65°

70°

55°

60°

50°

50°

45°

40°

40°

30°

35°

20°

80°

60°

65°

70°

55°

60°

50°

50°

45°

40°

40°

30°

35°

20°

Through the thermometer scale of the panel
board it is possible to verify:

on the L.H. side scale

 the flow température

of the heating circuit, (

green led  ON); on

the following example the temperature will
be 80°C.

on the R.H. side scale

 the outlet

température of the D.H.W. (

green led  ON);

on the following example the temperature
will be 55°C.

On both cases, when two leds are ON the
temperature value will correspond  to the
half of temperature difference betwee the
two ON leds.

80°

60°

65°

70°

55°

60°

50°

50°

45°

40°

40°

30°

35°

20°

Manometer

THERMOMETER

          75°C

57,5°C

Содержание DUA plus 30 mtank

Страница 1: ...00333636 1st dition 09 2010 GB INSTALLATION AND USER INSTRUCTION MANUAL DUA plus 30 tank...

Страница 2: ...caused by incorrect installation or use 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 liab...

Страница 3: ...actor 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 2...

Страница 4: ...n efficiency measurement page 15 2 2 9 Gas supply line page 16 2 2 10 Hydraulic connections page 16 2 2 11 Electrical connections page 16 2 3 Electrical wirings page 17 2 3 1 Actual connection diagram...

Страница 5: ...ic ignition it is supplied only in room sealed forced draught version and with electrically operated diverting valve It is foreseen for heating and domestic hot water production purposes The nominal o...

Страница 6: ...ulation tank 4L 11 Micro accumulation temperature sensor 12 Extraction fan 13 Microswitch of the smoke pressurestat 14 Safety pressureswitch of smoke circuit 15 Air intake and smoke evacuation duct 16...

Страница 7: ...er supply Tension Frequency Supply fuse Maximum absorbed output Insulation degree Net weight dry l min bar bar l C C l l bar bar l min l min l min l min l min l min l min C V Hz A F W IP kg Nominal ou...

Страница 8: ...ry resulting from unauthorised adjustment or manipulation of the system s control or regulating devices 2 2 INSTALLATION 2 2 1 PACKAGING The Dua plus 30 tank boiler is delivered packaged in a strong c...

Страница 9: ...when the boiler is in operation there are no special requirements to comply with NOTE Only if an air intake and smoke evacuation system with two separate ducts is used the smoke evacuation duct has t...

Страница 10: ...lding I 1000 From 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...

Страница 11: ...ucts The distance 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 co...

Страница 12: ...boiler see fig 5 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 m...

Страница 13: ...of evacuation system cannot be higher than the value stated on the installation examples shown on page 14 For installations with two separate ducts whose pressure drop is lower than 30 pa it is necess...

Страница 14: ...AND SMOKE EVACUATION fig 9 863 450 373 120 120 190 80 fig 16 Example N 1 _ 500 Hmin 150 mm Example N 1 Primary air intake from an outer wall and smoke evacuation through a roof terminal Maximum allowe...

Страница 15: ...smooth ducts In both of the following examples the hypotized compositions of the intake and evacuation ducts are possible because the total pressure loss is lower than 50 Pa which is the maximum allow...

Страница 16: ...seals must be checked before the pipes are covered The seal test must be conducted using air or nitrogen at a pressure of at least 100 mbar The commissioning of the boiler also includes the following...

Страница 17: ...eswitch SBM Micro accumulation temperature sensor SE Outer sensor SR Heating temperature sensor SS D H W temperature sensor T A Room thermostat option TL Safety thermostat V Fan VG Gas valve NA NC COM...

Страница 18: ...rd 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...

Страница 19: ...le 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 173...

Страница 20: ...er installation has been made in accordance with all the applicable regulations concerning water and gas installation smoke evacuation and electrical installation the flue gas exhaust duct and its ter...

Страница 21: ...hted When the burner is ON check that the MAXIMUM pressure value corresponds to that indicated on the table NOZZLES PRESSURES Correct eventually the value rotating the nut C with a 10 mm open wrench f...

Страница 22: ...ed 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...

Страница 23: ...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 positio...

Страница 24: ...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...

Страница 25: ...NICIANS 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 outpu...

Страница 26: ...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 m...

Страница 27: ...27...

Страница 28: ...g 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 ne...

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