Nova Florida Taurus Dual 70 Quick start guide

PRESSURISED STEEL
BOILER
INSTALLATION
USE AND MAINTENANCE
IST 04 C 235 - 03
TAURUS DUAL
TAURUS DUAL HR
EN

2
Dear Customer,
Thank you selecting our company and choosing to purchase our products. We invite you to carefully read these instructions for correct installation,
operation and maintenance of the above-mentioned products.
Important
In accordance with standard installation regulations, we inform the User that:







3
General information for installation and maintenance personnel and for the User
This instruction manual is an integral and essential part of the product and must be given by the installer to the User who must look after it for
future consultation.
This manual must accompany the product in the case it is sold or moved.


Installation must be performed in accordance with regulations in force and with the instructions of the manufacturer provided in the present
booklet:
Incorrect installation can cause damage to persons, animals and/or property. The manufacturer does not accept responsibility for such damage.




Furthermore, check the integrity of the product and that it has not been damaged during transport and moving. Do not install products which indicate
damage and/or faults.



Do not dispose of the packaging into the environment during installation. All materials are recyclable and must be placed at the appropriate
differentiated collection points.
Do not leave packaging within the reach of children since it can be, by its very nature, dangerous.
Do not dispose of the packaging into the environment during installation. All materials are recyclable and must be placed at the appropriate
differentiated collection points.
In the case of faults and/or defective functioning of the product, deactivate it and refrain from attempting to repair or intervene directly.
Contact only qualified personnel who meet the requirements established by Law, for maintenance service.
Any repair of the product must use original spare parts supplied by the manufacturer.
Failure to observe the above instructions can compromise the safety of the product and expose persons, animals and/or property to
danger.




Refer maintenance and repair operations exclusively to qualified personnel who meet the requirements established by legislation in force.
If the boiler is not used for long periods, disconnect the power supply and close the fuel supply.
Place some calcium carbonate inside the furnace to absorb moisture.
Should there be a risk of freezing, add anti-freeze in the heating system. Do not empty the system as this may damage the entire system.
Use specific anti-freeze products suitable for multi-metal heating systems.











4

Information2
 .............3
 .....................................................................................................................................................................................................................5
1.1. Control panel......................................................................................................................................................................................................................5
1.2. Boiler operation.................................................................................................................................................................................................................7
1.2.1. Switching on..............................................................................................................................................................................................................7
1.2.2. Boiler shutdown.......................................................................................................................................................................................................7
1.2.3. Shutdown due to overheating............................................................................................................................................................................7
1.3. Maintenance.......................................................................................................................................................................................................................7
1.4. Information for the User.................................................................................................................................................................................................7
...................................................................................................................................................................8
2.1. Technical characteristics.................................................................................................................................................................................................8
2.2. Dimensions .........................................................................................................................................................................................................................9
2.3. Technical data....................................................................................................................................................................................................................11
............................................................................................................................................................................................ 13
3.1. Installation regulations..................................................................................................................................................................................................13
3.2. Installation..........................................................................................................................................................................................................................13
3.2.1. Packaging ..................................................................................................................................................................................................................13
3.2.2. Choosing where to install the boiler................................................................................................................................................................13
3.2.3. Hydraulic connection............................................................................................................................................................................................14
3.2.3.1. Thermal hot water system with closed expansion vessel – Furnace output ≤ 300.000 kcal/h – pressure 6 bar..............14
3.2.3.2. Thermal hot water system with closed expansion vessel – Furnace output > 300.000 kcal/h – pressure 6 bar .............14
3.2.4. Air intake / flue gas systems................................................................................................................................................................................15
3.3. Electrical connection ......................................................................................................................................................................................................16
3.3.1. Wiring diagram ........................................................................................................................................................................................................16
3.3.2. Connection examples for Riello burners........................................................................................................................................................17
3.4. Door opening reversal procedure .............................................................................................................................................................................18
3.5. Burner connection...........................................................................................................................................................................................................18
 ................................................................................................................................................................................................................................. 19
4.1. Boiler housing panels for TAURUS DUAL and TAURUS DUAL HR 70÷400....................................................................................................19
4.2. Boiler housing panels for TAURUS DUAL and TAURUS DUAL HR 500÷1300 (fig. 10)) .............................................................................20
4.3. Boiler housing staves.......................................................................................................................................................................................................21
 ................................................................................................................................................................................................................................. 24
5.1. Preliminary checks...........................................................................................................................................................................................................24
5.2. Water treatment ...............................................................................................................................................................................................................24
5.3. Filling the system.............................................................................................................................................................................................................24
25
............................................................................................................................................................................................................................ 26
7.1. Ordinary maintenance...................................................................................................................................................................................................26
7.2. End-season maintenance or maintenance before long periods of inactivity............................................................................................27
7.3. Burner maintenance.......................................................................................................................................................................................................27
7.4. Checking boiler performance .....................................................................................................................................................................................27
 ................................................................................................................................................................................................ 28
32

5
 
 
9854
11 10
1 3
15 14 13 18

A thermoregulation control unit (optional) or a programming clock (optional) can be inserted here to programme the times for switching the boiler
on and off.

This indicator light indicates a DHW request (only if the boiler is connected to a DHW System).

This indicator light signals a heating request by the system.

This indicator light signals intervention of the safety thermostat with manual reset, due to an operational fault.
In order to re-set the boiler to normal operation, see Point 10 of this list.

This light indicates that the burner is receiving electrical power (request for heat).

The function of the thermometer is to indicate the flow water temperature.

After removing the black protection cover, it is possible to access the safety thermostat reset button.
Press the button to reset the safety thermostat and start-up the boiler (following shutdown due to overheating).

With the switch in position 0 the boiler is not electrically powered (boiler off ) and the switch is off.
With the switch in position I the boiler is electrically powered (boiler on) and the switch is lit up (green).

This switch turns the burner off.

This switch turns the CH pump(s) off.

This switch turns the DHW pump off (only if the boiler is connected to a DHW system).

This regulator allows the setting of the boiler water temperature, between a minimum value of 60ºC and a maximum value of 90ºC.
fig. 1

6
Correspondence of indicator lights with boiler status
Light 11 Light 3 Light 4 Light 5 Light 8
Switch 11 on „0” or loss of power OFF OFF OFF OFF OFF
Switch 11 on„I” GREEN n.a. n.a. n.a. n.a.
Burner powered GREEN n.a. n.a. OFF 
 GREEN  OFF OFF 
 GREEN OFF  OFF 

triggering GREEN n.a. n.a. RED OFF
Table 1
(1) Only if the boiler is connected to a DHW system. DHW mode always has priority over CH mode.
Legend:
OFF Light off
 Light permanently on (colour indicated)
 Light status not significant

7
 
Refer to Table 1 for boiler operation status indicators.
 
NOTE

• Check the value of the water pressure in the system:
- Maximum pressure 6 bar – 600kPa;
- Minimum pressure 0.8÷1 bar, 80-100 kPa;
• Open the fuel tap.
• Position the boiler main switch 11 in the I position (switch is lit up).
• Place the burner switch 13 in the ON position (up).
• By turning the heating water temperature regulator 18, set the value of the desired temperature for the water in the system.
• Set the value of the room temperature on the room thermostat (if present).
• When the system requires heat, the CH request light 4lights up.
• When the burner is in operation, the burner indicator light 8lights up.

 
When there is a system malfunction, the burner automatically shuts down and the shutdown light on the boiler comes on.
In this case, proceed as follows:
• First, check the fuel supply.
• Then restart the burner by pressing the reset button on the burner. If the boiler does not restart after three attempts, call authorised
personnel who satisfy the requirements of regulations in force, for maintenance service.
If the boiler shuts down frequently, indicating that there is a recurring fault, call qualified personnel who are able to meet the requirements
of regulations in force, for maintenance service.
 
If the red overheating light 10 lights up, indicating that the manual reset safety thermostat has activated due to a malfunction, contact
qualified personnel who satisfy the requirements of regulations in force, for maintenance service..
 

Correct maintenance ensures that the boiler and the burner operate in the best conditions, respecting the environment and in complete safety
for persons, animals and/or property.
It is compulsory to have maintenance and repair operations performed by qualified personnel who meet the requirements established by
legislation in force.
 










8
 
 
These boilers are steel, pressurised, horizontal cylindrical type, with flame reversing process in the furnace and a third combustion
flue pass.
They may be used for heating water to a temperature not exceeding boiling point under installation conditions.
The boilers meet the essential requirements of the relevant EC Directives, the laws and standards of the countries of destination
which are indicated on the technical data plate of the boiler.
Installation in any other country can present a danger to persons, animals and/or property.
The boiler is a single-body type, compatible with blown air burners that can work on gas or liquid fuels.
The following models are available:
70 - HR 70, heat output 70 kW
80 - HR 80, heat output 80 kW
90 - HR 90, heat output 90 kW
100 - HR 100, heat output 100 kW
120 - HR 120, heat output 120 kW
150 - HR 150, heat output 150 kW
200 - HR 200, heat output 200 kW
250 - HR 250, heat output 250 kW
300 - HR 300, heat output 300 kW
350 - HR 350, heat output 350 kW
400 - HR 400, heat output 400 kW
500 - HR 500, heat output 500 kW
620 - HR 620, heat output 620 kW
750 - HR 750, heat output 750 kW
850 - HR 850, heat output 850 kW
950 - HR 950, heat output 950 kW
1020 - HR 1020, heat output 1020 kW
1200 - HR 1200, heat output 1200 kW
1300 - HR 1300, heat output 1300 kW
1400 - HR 1400, heat output 1400 kW
1600 - HR 1600, heat output 1600 kW
1800 - HR 1800, heat output 1800 kW
2000 - HR 2000, heat output 2000 kW
2400 - HR 2400, heat output 2400 kW
3000 - HR 3000, heat output 3000 kW
3500 - HR 3500, heat output 3500 kW
The boilers are fitted with a right- or left-hinged door.
The outer casing is lined with a glass wool layer.
Hooks are fitted to the upper part of the casing for lifting the boiler.
The boilers are fitted with a blind cylindrical furnace in which the centre flame of the burner reverses peripherally forwards: from
there, the combustion gases enter the flue gas ducts. The flue gas is then collected in the smoke chamber at the extremity of the
ducts and sent to the chimney.
While the burner is operating, within the range of output of the boiler, the combustion chamber always remains under pressure.
The boilers are designed to operate either with an ON/OFF burner or with a two-stage or modulating burner, on condition that the
minimum heat output is not lower than the value indicated on the technical data plate for the type of fuel used.
The control panel is designed for managing the CH mode only and it includes:
• Main back-lighted switch
• Burner switch
• CH pump switch
• DHW pump switch
• Indicator lights for:
- Power on
- Heating on
- DHW mode
- Burner on
- Shutdown due to overheating
• Two-stage boiler water temperature regulator (60/90°C) with 8°C dierence between 1st and 2nd stage
• Safety thermostat (100°C)
• Minimum thermostat (45°C)
• Thermometer
For DHW management, the control panel can be fitted with the following optional equipment:
• an additional CH pump and a DHW pump
• a water storage heater priority thermostat
• a thermoregulation control unit
• a board for controlling three dierent CH zones

9
 
Ø b
ØØ c
241
MODEL H H1 H2 H4 H6 H10 L L2 P P2 P3 P4 P5 P6 Øb Øc N1 N2 N3 N4 N5 N6 N8
mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm DN/in DN/in DN/in DN/in DN/in in in
70 - HR 70
1030 855 415 911 415 54.5 750 700 994 630 413 240 402 200-250 130 200 50 50 1” 1” - 1/2” 1/2”
80 - HR 80 1030 855 415 911 415 54.5 750 700 994 630 413 240 402 200-250 130 200 50 50 1” 1” - 1/2” 1/2”
90 - HR 90 1030 855 415 911 415 54.5 750 700 1119 755 513 265 417 200-250 130 200 50 50 1” 1” - 1/2” 1/2”
100 - HR 100 1030 855 415 911 415 54.5 750 700 1119 755 513 265 417 200-250 130 200 50 50 1” 1” - 1/2” 1/2”
120 - HR 120 1030 855 415 911 415 54.5 750 700 1119 755 513 265 417 200-250 130 200 50 50 1” 1” - 1/2” 1/2”
150 - HR 150 1080 905 440 961 440 54.5 800 750 1364 1000 513 475 452 200-250 160 250 50 50 1” 1” - 1/2” 1/2”
200 - HR 200 1080 905 440 961 440 54.5 800 750 1364 1000 513 475 452 200-250 160 250 50 50 1” 1” - 1/2” 1/2”
250 - HR 250 1080 905 440 961 440 54.5 800 750 1614 1250 513 725 376 200-250 160 250 50 50 1” 1” - 1/2” 1/2”
300 - HR 300 1180 1005 490 1061 490 54.5 900 850 1614 1295 523 700 467 200-250 180 250 65 65 1” 1” - 1/2” 1/2”
350 - HR 350 1180 1005 490 1061 490 54.5 900 850 1864 1500 523 980 437 200-250 180 250 65 65 1” 1” - 1/2” 1/2”
400 - HR 400 1190 1015 500 1095 500 50 940 890 1872 1502 600 850 422 230-280 225 250 80 80 1” 1” 1”1/4
(1)
1/2” 1/2”
500 - HR 500 1380 1205 610 1285 610 60 1160 1110 1946 1502 663 850 437 270-320 225 300 80 80 1” 1”1/4 1”1/4 1/2” 1/2”
620 - HR 620 1380 1205 610 1285 610 60 1160 1110 2235 1792 663 1150 427 270-320 225 300 80 80 1” 1”1/4 1”1/4 1/2” 1/2”
750 - HR 750 1510 1335 675 1417 675 60 1290 1240 2247 1753 704 1100 451 270-320 280 350 100 100 1” 1”1/4 1”1/2 1/2” 1/2”
850 - HR 850 1510 1335 675 1417 675 60 1290 1240 2247 1753 704 1100 451 270-320 280 350 100 100 1” 1”1/4 1”1/2 1/2” 1/2”
950 - HR 950 1510 1335 675 1417 675 60 1290 1240 2497 2003 704 1200 596 270-320 280 350 100 100 1” 1”1/4 1”1/2 1/2” 1/2”
1020 - HR 1020 1660 1485 750 1568 750 60 1440 1390 2477 2003 704 1200 596 270-320 280 400 125 125 1” 1”1/4 1”1/2 1/2” 1/2”
1200 - HR 1200 1660 1485 750 1568 750 60 1440 1390 2477 2003 704 1200 596 270-320 280 400 125 125 1” 1”1/4 1”1/2 1/2” 1/2”
1300 - HR 1300 1660 1485 750 1568 750 60 1440 1390 2477 2003 704 1200 596 270-320 280 400 125 125 1” 1”1/4 1”1/2 1/2” 1/2”
(1) Single connection
N1 Boiler flow
N2 Boiler return
N3 Connection to additional equipment
N4 Connection to system loading/unloading
N5 Safety valve(s) connection
N6 Bulb holder
N8 Inspection holder
fig. 2


10
Ø cØ c
ØØ
b

MODEL H H1 H2 H6 H10 L L2 P P2 P3 P4 P5 P6 Øb Øc N1 N2 N3 N4 N5 N6 N8
mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm DN/in DN/in DN/in DN/in DN/in in in
1400 - HR 1400
1746 1630 880 880 150 1470 1270 2886 2300 831 1300 755 350-400 320 400 150 150 1” 1”1/4 1”1/2 1/2” 1/2”
1600 - HR 1600 1746 1630 880 880 150 1470 1270 2886 2300 831 1300 755 350-400 320 400 150 150 1” 1”1/4 1”1/2 1/2” 1/2”
1800 - HR 1800 1746 1630 880 880 150 1470 1270 3096 2510 771 1850 475 450-500 320 400 150 150 1” 1”1/4 1”1/2 1/2” 1/2”
2000 - HR 2000 1876 1760 945 945 150 1600 1400 3220 2510 903 1550 767 450-500 360 500 200 200 1” 1”1/4 2” 1/2” 1/2”
2400 - HR 2400 1876 1760 945 945 150 1600 1400 3480 2770 903 1950 627 450-500 360 500 200 200 1” 1”1/4 2” 1/2” 1/2”
3000 - HR 3000 2146 2030 1080 1080 150 1870 1670 3480 2770 903 2050 527 450-500 400 550 200 200 1” 1”1/4 2” 1/2” 1/2”
3500 - HR 3500 2146 2030 1080 1080 150 1870 1670 3935 3225 903 2050 982 450-500 400 550 200 200 1” 1”1/4 2” 1/2” 1/2”
N1 Boiler flow
N2 Boiler return
N3 Connection to additional equipment
N4 Connection to system loading/unloading
N5 Safety valve(s) connection
N6 Bulb holder
N8 Inspection holder
fig. 3

11
 
MODEL
Heat
output
Heat
input
Effi-
ciency at
100%
load
Efficiency
class
Max. G20
gas con-
sumption
Max. G30
gas con-
sumption
Max. G31
gas con-
sumption
Max. flue
gas
capacity
Min.
heat
output
Min. heat
input
Efficiency
at 30%
load
Min. G20
gas con-
sumption
Min. G30
gas con-
sumption
Min. G31
gas con-
sumption
Min. flue
gas
capacity
Load loss
on flue
side
kW kW % % m³/h kg/h kg/h kg/h kW kW % m³/h kg/h kg/h kg/h mbar
70 70 76 92.11 ** 8.04 5.97 5.90 119.83 35 38.8 90.18 4.11 3.05 3.02 61.20 0.8
80 80 87 91.95 ** 9.21 6.83 6.76 137.17 40 44.3 90.23 4.69 3.48 3.44 69.89 1.0
90 90 98 91.84 ** 10.37 7.70 7.61 154.52 45 49.8 90.30 5.27 3.91 3.87 78.58 0.8
100 100 109 91.74 ** 11.53 8.56 8.47 171.86 50 55.3 90.40 5.85 4.34 4.30 87.21 1.0
120 120 131 91.60 ** 13.86 10.29 10.18 206.55 60 66.3 90.45 7.02 5.21 5.15 104.60 1.1
150 150 163 92.02 ** 17.25 12.80 12.66 257.01 75 82.3 91.15 8.71 6.46 6.39 129.73 1.2
200 200 218 91.74 ** 23.07 17.12 16.94 343.72 100 109.5 91.36 11.58 8.60 8.50 172.58 1.9
250 250 272 91.91 ** 28.78 21.36 21.13 428.87 125 138.3 90.40 14.63 10.86 10.74 218.03 2.0
300 300 325 92.31 ** 34.39 25.53 25.25 512.43 150 165.5 90.62 17.52 13.00 12.86 260.98 2.0
350 350 380 92.11 ** 40.21 29.84 29.52 599.15 175 193.1 90.64 20.43 15.16 15.00 304.42 2.9
400 400 433 92.38 ** 45.82 34.01 33.64 682.72 200 220.2 90.81 23.31 17.30 17.11 347.26 4.1
500 500 542 92.25 - 57.35 42.57 42.11 854.58 250 275.6 90.71 29.16 21.65 21.41 434.55 4.2
620 620 672 92.26 - 71.11 52.78 52.21 1059.56 310 341.9 90.68 36.18 26.85 26.56 539.02 6.4
750 750 813 92.25 - 86.03 63.85 63.16 1281.87 375 413.9 90.60 43.80 32.51 32.16 652.62 5.2
850 850 921 92.29 - 97.46 72.33 71.55 1452.16 425 468.4 90.73 49.57 36.79 36.39 738.56 7.2
950 950 1030 92.23 - 108.99 80.89 80.02 1624.02 475 523.7 90.70 55.42 41.13 40.69 825.74 5.2
1020 1020 1106 92.22 - 117.04 86.86 85.92 1743.85 510 562.6 90.65 59.53 44.19 43.71 887.07 4.0
1200 1200 1301 92.24 - 137.67 102.18 101.07 2051.31 600 661.7 90.67 70.03 51.97 51.41 1043.39 5.5
1300 1300 1409 92.26 - 149.10 110.66 109.46 2221.60 650 717.4 90.61 75.91 56.34 55.73 1131.08 6.5
1400 1400 1517 92.29 - 160.53 119.14 117.85 2391.88 700 774.7 90.36 81.98 60.84 60.18 1221.44 6.0
1600 1600 1733 92.33 - 183.39 136.11 134.63 2732.46 800 884.9 90.41 93.64 69.50 68.74 1395.18 6.5
1800 1800 1950 92.31 - 206.35 153.15 151.49 3074.60 900 994.5 90.50 105.24 78.11 77.26 1568.01 7.0
2000 2000 2167 92.29 - 229.31 170.19 168.35 3416.75 1000 1.107.4 90.30 117.19 86.98 86.03 1746.09 6.0
2400 2400 2600 92.31 - 275.13 204.20 201.99 4099.47 1200 1.324.5 90.60 140.16 104.02 102.90 2088.37 7.5
3000 3000 3250 92.31 - 343.92 255.25 252.48 5124.34 1500 1.656.5 90.55 175.30 130.10 128.69 2611.91 8.0
3500 3500 3792 92.30 - 401.27 297.82 294.59 5978.92 1750 1.940.1 90.20 205.30 152.38 150.72 3059.04 9.0
MODEL
Max
chimney
Casing
losses
Losses
with
burner off
Flue gas temperature CO2
Pressure
loss on
water side
Nom.
pres-
sure
Water
test
pres-
sure
Max.
temper.
Total
water
content
Heat
exchange
surface
Furnace
volume
Total
weight
%%%°C °C °C % % % mbar bar bar °C l m² m3 kg
gas diesel-oil naphta gas diesel-oil naphta (ΔT=12°C)
70 7.09 0.80 0.10 188 191 191 10.5 13.5 14.0 9 5 7.5 90 105 2.24 0.067 216
80 7.25 0.80 0.10 192 195 194 10.5 13.5 14.0 9 5 7.5 90 105 2.24 0.067 216
90 7.36 0.80 0.10 194 197 197 10.5 13.5 14.0 10 5 7.5 90 123 2.90 0.080 258
100 7.46 0.80 0.10 197 199 199 10.5 13.5 14.0 12 5 7.5 90 123 2.90 0.080 258
120 7.60 0.80 0.10 200 203 202 10.5 13.5 14.0 13 5 7.5 90 123 2.90 0.080 258
150 7.18 0.80 0.10 190 193 193 10.5 13.5 14.0 14 5 7.5 90 172 4.70 0.135 346
200 7.46 0.80 0.10 197 199 199 10.5 13.5 14.0 15 5 7.5 90 172 4.70 0.135 346
250 7.29 0.80 0.10 193 196 195 10.5 13.5 14.0 15 5 7.5 90 220 5.72 0.162 431
300 6.89 0.80 0.10 184 186 186 10.5 13.5 14.0 16 5 7.5 90 300 7.10 0.209 475
350 7.09 0.80 0.10 188 191 191 10.5 13.5 14.0 18 5 7.5 90 356 8.40 0.256 542
400 6.82 0.80 0.10 182 185 184 10.5 13.5 14.0 20 5 7.5 90 360 8.90 0.307 584
500 6.95 0.80 0.10 185 188 187 10.5 13.5 14.0 22 5 7.5 90 540 10.90 0.412 853
620 6.94 0.80 0.10 185 188 187 10.5 13.5 14.0 27 5 7.5 90 645 12.80 0.515 963
750 6.95 0.80 0.10 185 188 187 10.5 13.5 14.0 25 5 7.5 90 855 16.70 0.593 1205
850 6.91 0.80 0.10 184 187 187 10.5 13.5 14.0 27 5 7.5 90 855 16.70 0.593 1205
950 6.97 0.80 0.10 185 188 188 10.5 13.5 14.0 32 5 7.5 90 950 21.00 0.679 1417
1020 6.98 0.80 0.10 186 189 188 10.5 13.5 14.0 26 5 7.5 90 1200 26.20 0.897 1843
1200 6.96 0.80 0.10 185 188 188 10.5 13.5 14.0 30 5 7.5 90 1200 26.20 0.897 1843
1300 6.94 0.80 0.10 185 188 187 10.5 13.5 14.0 32 5 7.5 90 1200 26.20 0.897 1843
1400 6.91 0.80 0.10 184 187 187 10.5 13.5 14.0 28 5 7.5 90 1500 32.00 1.163 2600
1600 6.87 0.80 0.10 183 186 186 10.5 13.5 14.0 32 5 7.5 90 1500 36.00 1.163 2600
1800 6.89 0.80 0.10 184 186 186 10.5 13.5 14.0 37 5 7.5 90 1650 36.00 1.275 2750
2000 6.91 0.80 0.10 184 187 187 10.5 13.5 14.0 35 5 7.5 90 2000 43.00 1.454 3650
2400 6.89 0.80 0.10 184 186 186 10.5 13.5 14.0 40 5 7.5 90 2300 48.00 1.606 3900
3000 6.89 0.80 0.10 184 186 186 10.5 13.5 14.0 49 5 7.5 90 3150 62.50 2.337 5200
3500 6.90 0.80 0.10 184 187 186 10.5 13.5 14.0 60 5 7.5 90 3650 72.00 2.724 5700

12
MODEL
Heat
output
Heat
input
Effi-
ciency at
100%
load
Efficiency
class
Max. G20
gas con-
sumption
Max. G30
gas con-
sumption
Max. G31
gas con-
sumption
Max. flue
gas
capacity
Min.
heat
output
Min. heat
input
Efficiency
at 30%
load
Min. G20
gas con-
sumption
Min. G30
gas con-
sumption
Min. G31
gas con-
sumption
Min. flue
gas
capacity
Load loss
on flue
side
kW kW % % m³/h kg/h kg/h kg/h kW kW % m³/h kg/h kg/h kg/h mbar
HR 70 70 74.2 94.34 *** 7.85 5.83 5.76 116.97 35 36.9 94.80 3.91 2.90 2.87 58.21 0.9
HR 80 80 84.7 94.45 *** 8.96 6.65 6.58 133.50 40 42.2 94.70 4.47 3.32 3.28 66.61 1.1
HR 90 90 95.2 94.54 *** 10.07 7.48 7.40 150.04 45 47.4 95.00 5.01 3.72 3.68 74.69 0.9
HR 100 100 105.6 94.7 *** 11.17 8.29 8.20 166.43 50 52.7 94.80 5.58 4.14 4.10 83.16 1.1
HR 120 120 126.5 94.86 *** 13.39 9.94 9.83 199.51 60 63.1 95.10 6.68 4.96 4.90 99.48 1.3
HR 150 150 157.8 95.06 *** 16.70 12.39 12.26 248.83 75 78.4 95.70 8.29 6.16 6.09 123.57 1.3
HR 200 200 210 95.24 *** 22.22 16.49 16.31 331.08 100 104.9 95.30 11.10 8.24 8.15 165.45 2.2
HR 250 250 263.5 94.88 *** 27.88 20.69 20.47 415.41 125 131.1 95.38 13.87 10.29 10.18 206.64 2.4
HR 300 300 315.5 95.09 *** 33.39 24.78 24.51 497.51 150 156.9 95.59 16.61 12.32 12.19 247.42 2.4
HR 350 350 367 95.37 *** 38.84 28.82 28.51 578.72 175 183.1 95.60 19.37 14.38 14.22 288.63 3.4
HR 400 400 420 95.24 *** 44.44 32.99 32.63 662.16 200 209.6 95.40 22.18 16.46 16.29 330.54 4.7
HR 500 500 524 95.42 - 55.45 41.15 40.71 826.21 250 261.2 95.70 27.64 20.52 20.29 411.89 4.8
HR 620 620 649 95.53 - 68.68 50.97 50.42 1023.33 310 323.3 95.90 34.21 25.39 25.11 509.68 7.3
HR 750 750 786 95.42 - 83.17 61.73 61.06 1239.23 375 391.0 95.92 41.37 30.71 30.37 616.42 5.8
HR 850 850 891 95.4 - 94.29 69.98 69.22 1404.92 425 443.6 95.80 46.94 34.84 34.46 699.48 8.0
HR 950 950 997 95.29 - 105.50 78.30 77.45 1571.95 475 495.9 95.79 52.47 38.95 38.52 781.85 5.9
HR 1020 1020 1069 95.42 - 113.12 83.96 83.05 1685.49 510 532.4 95.80 56.33 41.81 41.36 839.38 4.5
HR 1200 1200 1259 95.31 - 133.23 98.88 97.81 1985.13 600 626.2 95.81 66.27 49.18 48.65 987.41 6.2
HR 1300 1300 1364 95.31 - 144.34 107.13 105.97 2150.67 650 679.2 95.70 71.87 53.34 52.77 1070.92 7.3
HR 1400 1400 1468 95.37 - 155.34 115.29 114.05 2314.57 700 730.2 95.87 77.26 57.35 56.72 1151.24 6.6
HR 1600 1600 1675 95.52 - 177.25 131.55 130.13 2641.03 800 835.1 95.80 88.37 65.59 64.87 1316.67 7.1
HR 1800 1800 1885 95.49 - 199.47 148.05 146.44 2972.10 900 940.4 95.70 99.52 73.86 73.06 1482.81 7.6
HR 2000 2000 2094 95.51 - 221.59 164.46 162.68 3301.69 1000 1043.8 95.80 110.46 81.98 81.09 1645.84 6.6
HR 2400 2400 2518 95.31 - 266.46 197.76 195.62 3970.25 1200 1257.9 95.40 133.11 98.79 97.72 1983.29 8.1
HR 3000 3000 3142 95.48 - 332.49 246.77 244.09 4954.10 1500 1569.0 95.60 166.04 123.23 121.89 2473.93 8.6
HR 3500 3500 3670 95.37 - 388.36 288.24 285.11 5786.56 1750 1825.4 95.87 193.16 143.36 141.81 2878.12 9.6
MODEL
Max
chimney
losses
Casing losses Losses with
burner off
Flue gas
temperature CO2
Pressure loss
on water
side
Nom.
pressure
Water
test
pressure
Max.
temper.
Total
water
content
Heat
exchange
surface
Furnace
volume
Total
weight
%%% °C % mbar bar bar °C l m² m3 kg
GAZ GAZ (ΔT=12°C)
HR 70 5.16 0.50 0.10 148 11.0 9 5 7.5 90 105 2.24 0.067 222.0
HR 80 5.05 0.50 0.10 146 11.0 9 5 7.5 90 105 2.24 0.067 222.0
HR 90 4.96 0.50 0.10 143 11.0 10 5 7.5 90 123 2.90 0.080 266.0
HR 100 4.80 0.50 0.10 140 11.0 12 5 7.5 90 123 2.90 0.080 266.0
HR 120 4.64 0.50 0.10 136 11.0 13 5 7.5 90 123 2.90 0.080 266.0
HR 150 4.44 0.50 0.10 131 11.0 14 5 7.5 90 172 4.70 0.135 356.5
HR 200 4.26 0.50 0.10 127 11.0 15 5 7.5 90 172 4.70 0.135 356.5
HR 250 4.62 0.50 0.10 135 11.0 15 5 7.5 90 220 5.72 0.162 442.0
HR 300 4.41 0.50 0.10 130 11.0 16 5 7.5 90 300 7.10 0.209 488.5
HR 350 4.13 0.50 0.10 124 11.0 18 5 7.5 90 356 8.40 0.256 558.0
HR 400 4.26 0.50 0.10 127 11.0 20 5 7.5 90 360 8.90 0.307 599.5
HR 500 4.08 0.50 0.10 122 11.0 22 5 7.5 90 540 10.90 0.412 870.5
HR 620 3.97 0.50 0.10 120 11.0 27 5 7.5 90 645 12.80 0.515 980.5
HR 750 4.08 0.50 0.10 122 11.0 25 5 7.5 90 855 16.70 0.593 1229.5
HR 850 4.10 0.50 0.10 123 11.0 27 5 7.5 90 855 16.70 0.593 1229.5
HR 950 4.21 0.50 0.10 126 11.0 32 5 7.5 90 950 21.00 0.679 1445.5
HR 1020 4.08 0.50 0.10 122 11.0 26 5 7.5 90 1200 26.20 0.897 1880.0
HR 1200 4.19 0.50 0.10 125 11.0 30 5 7.5 90 1200 26.20 0.897 1880.0
HR 1300 4.19 0.50 0.10 125 11.0 32 5 7.5 90 1200 26.20 0.897 1880.0
HR 1400 4.13 0.50 0.10 124 11.0 28 5 7.5 90 1500 32.00 1.163 2665.0
HR 1600 3.98 0.50 0.10 120 11.0 32 5 7.5 90 1500 36.00 1.163 2665.0
HR 1800 4.01 0.50 0.10 121 11.0 37 5 7.5 90 1650 36.00 1.275 2815.0
HR 2000 3.99 0.50 0.10 120 11.0 35 5 7.5 90 2000 43.00 1.454 3730.0
HR 2400 4.19 0.50 0.10 125 11.0 40 5 7.5 90 2300 48.00 1.606 3980.0
HR 3000 4.02 0.50 0.10 121 11.0 49 5 7.5 90 3150 62.50 2.337 5306.0
HR 3500 4.13 0.50 0.10 124 11.0 60 5 7.5 90 3650 72.00 2.724 5806.0

13
 
 
The boiler is designed in compliance with rules and regulations enforced in the country indicated on the technical data plate. The
installation in a different country may be a source of danger for people, animals and property.
 



 
The boilers are supplied with the door and smoke chamber already assembled, but the boiler housing or staves with the insulation
are supplied in separate cardboard packaging.
The models with heat output between 70 kW and 400 kW are supplied with staves under boiler body, while coating load-bearing
structure and insulation are placed at the boiler side.
The models with heat output between 500 kW and 1300 kW are supplied with staves and insulation inside boiler furnace, while
frame is placed on top of the boiler.
The models with heat output above 1300 kW are supplied with pre-installed embossed aluminium shell protective insulation.

After having removed the packaging of the boiler and accessories, ensure that these are in perfect condition.
The packaging materials are recyclable. Gather them in the appropriate collection points.
Do not leave packaging within the reach of children since it can be, by its very nature, dangerous.
The manufacturer declines any responsibility for damage to people, animals and property due to failure to observe the above.
Before commencing installation, check that the length and width of the body of the boiler delivered correspond to the dimensions
of the boiler ordered, as shown on the technical data tables, and that the cardboard boxes containing the casing are marked with
the same model.
Before connecting the boiler, perform the following operations:
• Thoroughly wash all tubing of the system in order to remove any residues which may compromise the functioning of the boiler.
• Check that the chimney has sucient suction, that it does not have any bottlenecks and is free of slag; that it is free of discharges
from other devices (unless this duct has been specially designed to support other systems).
Ensure that all the current regulations relative to chimneys are observed.
 
In determining the location for installing the boiler, take into consideration the instructions provided in Point 3.2.4“Air intake/flue
gas system” and sub-paragraphs.
Installation must observe the regulations and laws in force.
It is advisable to install the boiler in a well-ventilated place and where ordinary and extraordinary maintenance can be easily
performed.

14
 
 
 

a - Safety valve
Expansion vessel (connected with a ≥ 18 mm
diam. duct)
c - Regulation thermostats
d - Safety thermostat
e - Locking pressure switch
f - Regulation thermometer holder
g - Manometer with flange for control manometer
h - Thermal discharge valve or fuel valve
N1 - Flow
N2 - Return
N3 - Connection for additional equipment
N4 - Lower connections:
 Expansion vessel connection
N4c - Loading / unloading
N6 - Bulb holder (thermometer, regulation
thermostat, safety thermostat, pump consent
thermostat).
N2
N1
ha ge
f
b
N4c
N4bN4
cd
N6
N3
cd
N2
N1 i
a
f
h
g
N6
N5
N3
b
N4c
N4b
N4
 
 
The generator must be equipped with:
a– 1 safety valve
2 safety valves if P > 500.000 kcal/h
- Expansion vessel
c– Regulation thermostats
d– 1st safety thermostat
f– Locking pressure switch
g– Regulation thermometer holder
h– Manometer with flange for control manometer
i– Thermal discharge valve or fuel valve
N1 – Flow
N2 – Return
N3 – Connection for additional equipment
N4 – Lower connections:
 – Expansion vessel connection
N4c – Loading / unloading
N5 – Safety valves connection
N6 – Bulb holder (thermometer, regulation thermostat,
safety thermostat, pump consent thermostat).
• Ensure that the hydraulic pressure measured after the reduction valve on the ow duct is not higher than the operating pressure
indicated on the plate of the component (boiler, external water heater, etc.).
• Since the water pressure in the heating system increases during operation, ensure that the maximum value does not exceed the
maximum hydraulic pressure shown on the component’s plate (6 bar).
• Check that the boiler and water heater safety valve discharges are connected to a discharge hopper so as to avoid that the valves,
as a result of a malfunction, flood the area during operation.
• Check that the hydraulic and heating system piping is no used for earthing the electrical system. Should this be the case, in a short
time serious damage may be caused to the piping, boiler, water heater and radiator.
• Once the heating system is lled with water, it is advisable to close the supply tap and keep it in this position. Any leakages from
the system will, therefore, be noticed by a drop in the hydraulic pressure shown on the manometer.
fig. 4
fig. 5

15
 
The boilers are built with an open combustion chamber and are designed to be attached to a chimney. 

The burner needs air for the combustion of solid or liquid fuel. Therefore, it is necessary to provide openings for the entry of air into
the boiler room. Ensure that these openings are never obstructed.
It is mandatory to install the boiler in a room complying with the prescriptions of the regulations in force, which should be
considered as a full integral part of this manual.
The boiler has a flue discharge connection suited to be connected to a flue duct with a diameter as indicated in figures 2, 3, 4, 5, 6
(“Øc”parameter).
With regard to flue discharge into the atmosphere, follow the regulations in force which should be considered as a full integral part
of this manual.
The flue ducts coming from the boiler must be connected to a chimney made in compliance with the applicable regulations, which
should be considered as a full integral part of this manual.

Since it is a high performance boiler, the flue gas temperature is low.
Therefore condensate may appear inside the chimney pipe, especially if the boiler is operating with a two-stage burner.
The chimney must, therefore, comply with the following requirements:
• The diameter must not be less than the diameter of the boiler discharge pipe.
• It must be made of impermeable material, resistant to ue temperature and acid condensate.
• Low thermal conductivity, sucient mechanical resistance, perfect seal, correctly calculated height and cross-section.
• Vertically positioned with a constant cross-section, without any bottlenecks.
• The end section must ensure constant, ecient discharge of ue in any atmospheric conditions.
During installation a special fitting must be installed allowing for flue gas sampling and subsequent burner regulation and the
measurement of the boiler efficiency.



16
 
The electrical connections of a thermal system designed only for the heating of buildings is subject to numerous legal regulations of
a general and specific nature for the individual types of applications or fuel. It is therefore necessary to comply with local standards.
 
L
N
T
FIG
1
4
5
3
2
15
TA1
Re2
Re2
Re3
Re3
Re4
Re4
Re2Re3Re4
TA2TA3
16 14 12
P3 P2 P1
6
39
CZ1
42
TTT
31
1
79
86
18 30
39
17 28
27
25 26
10
11
TS L5
2
22 24
21
h1 h2
12 14
11
C
24
MN
2
L3
PC PS BR
IBR
BR - 2° STADIO
PR
TA
IPC IPS
S
L7
2120
L4
19 22 23 12 13 14
16
R1
17 18
37
38 36
15
R2 L6
L1 N T1 T2 S3 B4 B5 T7T8 T6
32 33 35
31 34
13 11
CENTRALINA
Lon
fig. 6

Power supply: 230 VAC + 10% - 15%
Frequency: 50 Hz
Maximum total current: 4 A
if the sum of all connected power loads exceed 4 A (inductive), supply one or more of the power supplies via a
relevant contactor.

IG: Main switch
 CH pump switch
IPS: DHW pump switch
IBR: Burner switch
L3: Main pump light
L4: Burner ON light
L5: Safety thermostat light
L6: Burner shutdown light (not supplied)
L7: DHW re-circulation pump light
TA: Room thermostat
R1: CH thermostat: 1st contact
R2: CH thermostat: 2nd contact
TS: Safety thermostat
F: F4A 250V fuse
BR: Burner
BR - 2° stadio: burner 2nd stage control
 CH pump
PS: DHW re-circulating pump
PR: Boiler re-circulating pump
P1: Zone 1 pump
P2: Zone 2 pump
P3: Zone 3 pump
TA1: Zone 1 room thermostat
TA2: Zone 2 room thermostat
TA3: Zone 3 room thermostat
S: DHW priority thermostat (not supplied)
h1: Burner 1st stage hour counter (not supplied)
h2: Burner 2nd stage hour counter (not supplied)
* Thermoregulation control unit and contacts (not
supplied)
** Zone pump module (only for version P control
panels)
Thermoregulation
control unit

17
 
IB R
BRBR
PR
BR
IB R
BR
PR
BRBR
IB R
BR
PR
BR
PR
IB R
fig. 7
12
34
Type of burners listed:
1 - Gas burners RS70, RS100, RS130
2 - Gas burners GAS P/M, GAS 9 P/M, GAS 10 P/ M
3 - Diesel oil burners RL70, RL100, RL130
4 - Diesel oil burners P 140 T/G, T P200/G, P 300 T/G, P 450 T/ G

18
 
Should it be necessary to reverse the door opening direction, proceed as follows:
1. Exchange the external nut (or bush) of a hinge with the diametrically opposite closing bush. Then secure the cone on the hinge
side to
the door with the internal nut.
2. Repeat the operation for the other hinge.
3. Use the appropriate nuts of the hinges to make any adjustments.
 
It must be remembered that the electrical board of the boiler supports a two-stage burner.
Before installing, it is advisable to thoroughly clean the inside of all fuel supply pipes in order to remove any residues which may
compromise the proper functioning of the boiler.
Check the maximum pressure value in the furnace indicated in the technical data tables. The value measured can increase by 20% if
the fuel used is naphta rather than gas or diesel-oil. In addition, perform the following checks:
a) Check internal and external sealing of the fuel supply system.
b) Regulate the fuel supply rate according to the capacity required by the boiler.
c) Check that the boiler is supplied with the type of fuel for which it is pre-adjusted.
d) Check that the fuel supply pressure is within the values indicated on the burner plate.
e) Check that the fuel supply system is sized for the maximum capacity needed by the boiler and is equipped with all the safety and
regulating devices required by the regulations mentioned above.
f ) Ensure that the ventilation of the area is sufficient to guarantee air flow as required by law and so as to achieve perfect
combustion.
In particular, when using gas it is necessary to:
g) Check that the supply line and gas train comply with the relevant regulations in force.
h) Ensure that all gas connections are sealed.
i) Ensure that the gas pipes are not used to earth electrical devices




P6
4
1
3
2
See Point 2.2: Dimensions for nozzle length (P6), diameter of burner hole (Øb) and the pressure value.
fig. 8
Legend
1 Burner
2 Door
3 Thermoinsulating material
4 Flange
Øb

19
 
 
a) Wrap the glass wool around the boiler body, ensuring that the bulb-carrying holders (P) located on the right-hand side remain
visible.
b) Lead the burner-control panel connection cables through the holes present on the lower part of panels (1S) and (1D) according to
the opening direction of the door.
c) Mount panel (1S) by hooking the upper fold onto the square pipe and the lower fold to the boiler side member.
d) Mount the upper panel (2S) on the boiler and position on it the control panel. Unravel the wires of the thermostats and
thermometer and insert the bulbs in the holders.
e) Mount panel (1D) as described in point (b) and then panel (2D), checking that the wires are inserted in the slot provided. Finally fix
the control panel.
f ) Fix the upper panels with the screws and close the guide holes with the plugs provided (see figure).

g) Mount panels (3) and (4) by fixing them to the side panels.
TM
TR2
TR1
TS
TMC
2S
2D
1S
3
1D
4
P
Legend
P Bulb holders
TR1-TR2 Boiler regulating thermostats
TS Safety thermostat
 Pump consent thermostat
 Boiler thermometer
fig. 9

20
 
a) Wrap the glass wool around the boiler body, ensuring that the bulb-carrying holders located on the right-hand side remain visible.
b) Lead the burner/control panel connection cables through the holes present on the lower part of panels (1S) and (1D) according to
the opening direction of the door.
c) Mount the lower panel (1S) by hooking the fold onto the square pipe and following the same procedure with the upper panel (2S).
d) Mount the upper panel (3S) onto the boiler. Position the control panel onto 3S panel; unravel the wires of the thermometer and
thermostats and insert the bulbs into the holders (P).
e) Mount panels (1D), (2D) and (3D) taking care that the wires are inserted into the slot provided in panel (3D). Finally fix the control
panel.

f) Mount panels (5S) and (5D) by securing them onto the side panels of the boiler with the brackets provided. Mount the front panels
(4B) and (4A) by securing these to panels (5S) and (5D). Close the door casing with the upper panel (6), securing it with the screws
and closing the holes with the plugs provided.
g) Mount panels (8S) and (8D) by securing them to the side panels of the boiler with the brackets provided. Mount the back panels
(9B) and (9A) by securing these to panels (8S) and (8D). Close the casing of the flue chamber with the upper panel (10), securing it
with the screws and closing the holes with the plugs provided.
Legend
P Bulb holders
TR1-TR2 Boiler regulating thermostats
TS Safety thermostat
 Pump consent thermostat
 Boiler thermometer
fig. 10