Unical IVEN B60 TFS 24 Quick start guide

IVEN B60 TFS 24
00334052 - 1st edition - 03/2011
INSTALLATION USE
AND MAINTENANCE
IVEN B60 TN 24

2
General info
IMPORTANT
This INSTRUCTION MANUAL, which is an integral and indispensable part of the product, must be handed over to the user by the plumbers and
must be kept in a safe place for future reference. The manual must be handed over with the boiler should it be sold or transferred.
This boiler must be used for the purposes for which it has been designed. Any other use shall be considered incorrect and therefore
dangerous.
The boiler must be installed in compliance with applicable laws and standards and according to the manufacturer’s instructions given in this
manual. Incorrect installation may cause injury to persons and/or animals and damage to property.The manufacturer shall not be held liable for any
such injury and/or damage.
Damage and/or injury 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 liability.
Before installing the boiler, check that the technical data corresponds to requirements for its correct use in the system.
Check that the boiler is intact and that it has not been damaged during transport and handling. Do not install equipment which is patently damaged
and/or faulty.
Do not obstruct the air suction and/or heat dissipation grates.
Only original accessories must be used for all boilers supplied with optionals or kits (including electrical ones).
Dispose of the packaging with care as all the materials can be recycled. The packaging must therefore be sent to specific waste management
sites.
Keep the packaging out of the reach of children as it may represent a choking and suffocation hazard.
In the event of failure and/or faulty functioning, switch off the boiler. Do not attempt to make repairs: contact qualified technicians.
Original parts must be used for all repairs to the boiler.
Non-observance of the above requirement may jeopardize the safety of the boilers and expose people, animals and property to danger.
To guarantee efficiency and correct functioning of the equipment it is legally binding to service the boilers once a year according to the
schedule indicated in the relative section of this manual.
In the event of long periods of inactivity of the boiler, disconnect it from the power mains and close the gas tap (Warning! In this case the boiler’s
electronic anti-freeze function will not be operative).
Should there be a risk of freezing, add anti-freeze: it is not advisable to empty the system as this may result in damage; use specific anti-freeze
products suitable for multi-metal heating systems.
N.B.
For boilers which use gaseous fuel, if you smell gas:
- do not turn on or off electrical switches and do not turn on electrical appliances;
- do not ignite flames and do not smoke;
- close the main gas tap;
- open doors and windows;
- contact a Service Centre, qualified installer or the gas supply company.
Never use flames to detect gas leaks.
WARNING
This boiler has been built for installation in the country indicated on the technical data plate: installation in any other country may be a source
of danger for people, animals and property.
Read the warranty conditions and clauses on the warranty certificate attached to the boiler with care.
‘’WATER TREATMENT IN C.H. SYSTEM FOR CIVIL USE’’
NOTE FOR INSTALLER AND USER
1) The frequency of the cleaning of the D.H.W. heat exchanger is related to the hardness of the feeding water.
2) With a water hardness higher than 28°f (16°d) the use of antiscaling devices, whose choice will be made on the base of water characteristics, is
suggested.
3) To increase the resistance to the scaling, a D.H.W. temperature adjustment very close to that one of the actual use, is suggested.
4) The adoption of a modulating room thermostat reduces the scaling danger.
5) We advise you to verify the state of cleaness of the D.H.W. heat exchanger at the end of the first year and subsequently every two years.

3
General info
TECHNICALFEATURES
ANDDIMENSIONS........................................................... pag. 4
1.1 Technical features.................................................................... pag. 4
1.2 Dimensions .............................................................................. pag. 4
1.3 Hydraulic circuits ..................................................................... pag. 5
1.4 Operatingdata ......................................................................... pag. 6
1.5 General features ...................................................................... pag. 6
DIRECTIONS FOR
INSTALLERS......................................................................... pag. 7
2.1 Installations rules .................................................................... pag. 7
2.2 Installation ............................................................................... pag. 7
2.2.1 Packing....................................................................... pag. 7
2.2.2 Positioning the boiler .................................................. pag. 8
2.2.3 Assembling the boiler ................................................. pag. 8
2.2.4 Ventilation ................................................................... pag. 9
2.2.5 Flue gas discharge system ........................................ pag. 9
2.2.6 Position of terminals for Type C boilers ...................... pag. 11
2.2.7 Discharge and suction pipe configuration .................. pag. 12
2.2.8 Discharge of flue gas into coaxial pipes with a
diameter of 100/60 mm (TypeA accessories) ............ pag. 13
2.2.9 Flue gas discharge and air suction with separate
pipes with 80 mm diameter ........................................ pag. 14
2.2.10 Measurements of combustion efficiency .................... pag. 16
2.2.11 Connection to the gas mains...................................... pag. 16
2.2.12 Hydraulicconnection .................................................. pag. 17
2.2.13 Connection to the power mains.................................. pag. 17
2.3 Wiringdiagram ........................................................................ pag. 18
2.4 Filling the system .................................................................... pag. 20
2.5 Starting the boiler .................................................................... pag. 21
2.6 Adjustingthe burner ................................................................ pag. 21
2.7 Modification of other gases ..................................................... pag. 22
2.8 Adapting thermal power to the heating system ...................... pag. 23
USERS' INSTRUCTION ............................................... pag. 24
3.1 Controlpanel ........................................................................... pag. 24
3.2 Switchting ................................................................................ pag. 25
3.3 Maintenance ............................................................................ pag. 25
1
2
3

4
fig. 1
1.2 - DIMENSIONS
600 476
855
493
General info
1
Directive Gas 90/396/EEC dated 29 June
1990;
Yield Directive 92/42 EEC dated 21 May 1992;
EMC Directive 89/336/EEC dated 3 May 1989
amended by Directive 92/31/EEC dated 28
April 1992;
European Community’s Low Voltage Directive
73/23/EEC dated 19 February 1973 amended
by Directive 93/68/EEC dated 22 July 1993;
and is supplied with all safety features pur-
suant to relative applicable laws.
The main technical features of the IVEN B
boilers are summarised below.
• High-performance copper heat exhanger
• 60-litre enamelled upright storage tank
with a helical steel heat exchanger
• Magnesium anode
• Electronic ignition;
• Electronic flame modulation;
• Minimum thermal power control;
• Electronic control of ignition ramp;
• Anti-freeze function;
• D.H.W. precedence thermostat
• Pump anti-blocking function;
• Pump over run function;
• Safety limit thermostat (85°C);
• Three-way motorised valve;
• Three-speed circulation pump with auto-
matic air vent
• Manual air vent for system filling
• 7,5 litre expansion vessel;
• System water inlet tap;
• Safety pressure switch for low water level;
• Control panel with IP44 class protection;
• Temperature and pressure gauge;
• Warning light for: presence of power, re-
quest for heating, burner in function, cut
off;
• D.H.W. temperature selector (45/65°C);
• Heating temperature selector (35/85°C).
• Reset button;
• Summer / Off / Winter / Anti-freeze selecto
• Assembly template for connection layout.
IVEN B60 is a gas boiler with atmospheric
gas burner; and 60-litre storage tank; it is
available in the following versions:
TN with natural draught open chamber;
TFS with forced draught Sealed
combustion chamber;
All versions have electronic ignition.
Models in the IVEN series:
IVEN B60 TN 24:
open boiler with electronic ignition;
IVEN B60 TFS 24:
forced draught sealed boiler with electronic
ignition;
The IVEN B60 boilers comply with the fun-
damental requirements of the following EEC
directives:
TECHNICAL FEATURES
AND SIZES
1.1 - TECHNICAL
FEATURES

5
1.3 - HYDRAULIC CIRCUIT
IVEN B60 TN 24
fig. 3
fig. 2
IVEN B60 TFS 24
1- 3 bar safety valve
2- 3-way valve
3- Water pressure switch
4- Pump with automatic air vent
5- Ignition card
6- Gas valve
7- Ignition electrode
8- Burner
9- Ionisation electrode
10 - Overheating safety device
11 - Heat exchanger
12 - Temperature probe
13 - Flue gas thermostat
14 - Manual air vent
15 - Heating expansion vessel
16 - Storage tank
17 - D.H.W. expansion vessel (optional)
18 - Storage tank thermostat
19 - Magnesium anode
20 - Boiler drain tap
21 - Filling system
22 - 7 bar safety valve
M- Heating system flow
C- D.H.W. outlet
G- Gas inlet
F- D.C.W. inlet
R- Return from system
1- 3 bar safety valve
2- 3-way valve
3- Water pressure switch
4- Pump with automatic air vent
5- Ignition card
6- Gas valve
7- Ignition electrode
8- Burner
9- Ionisation electrode
10 - Overheating safety device
11 - Heat exchanger
12 - Temperature probe
13 - Flue gas circuit safety pressure switch
14 - Manual air vent
15 - Heating expansion vessel
16 - Storage tank
17 - D.H.W. expansion vessel (optional)
18 - Storage tank thermostat
19 - Magnesium anode
20 - Boiler drain tap
21 - Filling system
22 - 7 bar safety valve
23 - Flue gas fan
M- Heating system flow
C- D.H.W. outlet
G- Gas inlet
F- D.C.W. inlet
R- Return from system
1
5
11
1
G
2
3
4
5
6
7
9
10
11
12
13
22
21
20
18
17
19
16
15
14
8
RMCF
11
1
2
3
4
5
6
7
9
10
11
12
23
22
21
20
18
17
19
16
15
14
8
13
GR M CF
General info

6
General info
1.4 - OPERATING DATA
The pressures at the burner indicated in the following table must be checked after the boiler has been operating for 3 minutes.
OUTPUT INPUT BURNER PRESSURE
FUNCTION POWER CAPACITY (mbar)
(kW) (kW) Natural gas Butane gas Propane gas
IVEN B60 TN 24 23.8 12.5 - 26.5 2.9 - 12.3 5.3 - 23.5 7.1 - 30.3
IVEN B60 TFS 24 24.0 12.5 - 26.5 3.2 - 13.2 5.8 - 25.1 7.6 - 32.2
Production of D.H.W. with 45°C delta T delta T di 45K = 7.2 l/min.
Production of D.H.W. with 45°C delta T delta T di 40K = 8.1 l/min.
Production of D.H.W. with 45°C delta T delta T di 35K = 9.3 l/min.
Production of D.H.W. with 45°C delta T delta T di 30K = 10.8 l/min.
Quantity of D.H.W. available at 45°C in the first ten minutes of use with storage tank water at 60°C and cold water at 10°C = 121.7 litres.
II2H3+
13
7,5
0,5
3
0,5
7
60
230/50
4
110
165
72,5
78
min. 1,32 - max. 2,80
min. 0,98 - max. 2,09
min. 0,97 - max. 2,05
90
65
7,5
138
n°
l/min
bar
bar
bar
bar
l
V-Hz
A (F)
W
W
kg
kg
m³/h
kg/h
kg/h
°C
°C
l
l
Equipment category
Burner nozzles
Minimum rate of the heating circuit
Minimum pressure of the heating circuit
Maximum pressure of the heating circuit
Minimum pressure of the D.H.W. circuit
Maximum pressure of the D.H.W. circuit
Storage tank capacity
Power supply Voltage/Frequency
Fuse on the supply mains
Maximum absorbed power TN 24
Maximum absorbed power TFS 24
Net weight TN 24
Net weight TFS 24
Consumption of natural gas TN 24\TFS 24 (*)
Consumption of butane gas TN 24\TFS 24
Consumption of propane gas TN 24\TFS 24
Maximum operating temperature of the heating circuit
Maximum operating temperature of D.H.W. circuit
Total capacity of the expansion vessel
Max water content (**)
(*) Value refers to 15°C - 1013 mbar (**) Calculated for a maximum temperature of 90°C
1.5 - GENERAL FEATURES
Pmax. Pmin. 30% red. load
3.0 4.54
7.2 9.5
19.8 18.1
86.9
4.9
89.81 88.78
1.85 1.09
7.7 11.1
16.5 17.7
108.8
5.9
90.45 88.36
%
%
g/s
°C
%
%
%
%
g/s
°C
%
%
IVEN B60 TN 24
Jacket heat dispersion
Chimney loss with burner functioning
Mass rate of flue gas
T flue – T air
CO2value
Usefulthermalefficiency
IVEN B60 TFS 24
Jacket heat dispersion
Chimney loss with burner functioning
Mass rate of flue gas
T flue – T air
CO2value
Usefulthermalefficiency

7
fig. 4
650
650
960
Installation info
2
2.1 - INSTALLATION
REGULATION
IVEN B60 is an II2H3+ class boiler which
must be installed pursuant to applicable
standards and laws.
DIRECTIONS
FOR INSTALLERS
2.2 - INSTALLATION
2.2.1 - PACKING
IVEN B60 is packed and delivered in a strong
cardboard box. Once the boiler has been
unpacked check that it is intact. The packa-
ging material can be recycled and it must be
disposed of accordingly.
Keep the packaging out of the reach of chil-
dren as it represents a choking and suffoca-
tion hazard.
UNICAL waives all liability for injury to per-
sons and animals or damage to property
resulting from non-observance of the abo-
ve.
The packaging contains:
- the copper pipe kit for hydraulic connec-
tion of the boiler to the heating and water
system and to the gas mains;
- a bag with:
a) installation, use and maintenance hand-
book,
b) template for fixing the boiler to the wall,
c) 4 screws with dowels to fix the boiler to
the wall,
d) for models TFS, a diaphragm for flue gas
exhaust.

8
165
135
160
50
290
65
880
780
RGMCF
140,5 68 59
117
199 190
175
23,5
35
600
SSS
90
Ø 100 (only for version IVEN B60 TFS 24)
147,568
MOUNTING JIGS FOR BOILER
CONNECTIONS
(code 00211067)
fig. 5
2.2.2 - POSITIONING THE BOILER
When choosing the position of the boiler:
- refer to the indications given in the section
“Flue gas exhaust system “.
- remember that it is advisable to leave a
space of 50 mm on each side of the boiler
to facilitate maintenance operations.
- check that the walls are suitable.
- avoid fixing the boiler to thin partitions.
- avoid installing the boiler above applian-
ces which might affect operation when in
use (cookers which produce greasy ste-
am, washing machines etc.)
- avoid installing natural draught boilers in
corrosive or very dusty atmospheres such
as hairdressers’, laundrettes etc. as the life
of the boiler components could be signifi-
cantly shortened.
- 350 mm free space must be left between
the top of the boiler and the ceiling to allow
replacement of the magnesium anode.This
condition is met when there is a space of
436 mm between the axis of the holes in
the boiler bracket and the ceiling.
C = D.H.W. outlet 1/2"
F = D.C.W. inlet 1/2"
G = Gas inlet 3/4"
M = Heating system flow 3/4"
R = Return from system 3/4"
2.2.3 - ASSEMBLING THE BOILER
Before connecting the boiler to the D.H.W. and
heating system pipes, carefully clean the pi-
pes to remove all traces of metal resulting from
processing and welding operations as well as
any oil and grease which could damage the
boiler or jeopardize its operation.
NB: Do not use solvents which could damage
the components.
Unical declines all liability for injury to per-
sons and animals or damage to property
resulting from non-observance of the abo-
ve.
To install the boiler:
- fix the template to the wall;
- make four, Ø 10 holes in the wall for the
dowels and insert the hooks;
Warning! Rispect the minimum distan-
ce between hook and ceiling (436 mm).
- position the junction points for the connec-
tion of the gas supply pipe, cold water sup-
ply pipe, D.H.W. outlet, CH flow and return
by using the mounting jigs (lower part);
- fit the boiler onto the support hooks;
- join the boiler and supply pipes using the
pipe kit supplied;
- connect the boiler to the intake and outlet
system;
- connect to the power mains.
Installation info

9
2.2.4 - VENTILATION
Boiler model IVEN B60 TN 24 have an open
combustion chamber and have been desi-
gned for connection to a chimney: the com-
bustion air is taken directly from the room
in which the boiler is installed.
The boiler must be installed in a suitable room
pursuant to applicable standards and laws
which shall be considered as having been
transcribed in full in this manual.
2.2.5 - FLUE GAS DISCHARGE
SYSTEM
NATURAL DRAUGHT BOILER
Connection to the chimney
The chimney is indispensable for the correct
functioning of the boiler; it must therefore con-
form with the following requirements:
- it must be made from waterproof material
and be resistant at the temperature of the
flue gas and relative condensate;
- it must have sufficient mechanical stren-
gth and low thermal conductivity;
- it must be perfectly sealed to prevent co-
oling due to parasite air inlets;
- it must be as vertical as possible and the
end section must have a chimney cap whi-
ch guarantees efficient and constant remo-
val of the combustion products;
- the chimney must have a larger diameter
than that of the boiler’s draught stop; for
chimneys with a square or rectangular sec-
tion, the internal section must be 10% lar-
ger than the section of the connection duct
to the draught stop;
- starting from the draught stop, the duct fit-
ting must have a vertical section of more
than twice the diameter before joining the
chimney.
Direct emission into the atmosphere
Natural draught boilers can discharge combu-
stion products directly into the atmosphere
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 requirements:
- the sub-horizontal part inside the building
must be as short as possible (no more than
1.000 mm);
- for boiler with vertical discharge, such as
boiler IVEN B60 TN 24, there must be no
more than 2 direction changes;
- it must receive the discharge from a single
boiler;
- the part going through the wall must be pro-
tected by a sheath duct; the part of the
sheath duct facing the inside of the buil-
ding must be closed and the part facing
outwards must be open;
- the final section, on which the draught ou-
tlet will be fixed, must protrude from the
wall of the building for a length of a least
twice the diameter of the duct;
- the draught outlet must overlap the con-
nection to the boiler exhaust duct connec-
tion by at least 1.5 metres (see fig. 6)
Installation info
Boiler model IVEN B60 TFS 24 have a sea-
led combustion chamber with reference to
the environment in which it is installed, so no
special measures need be taken as regar-
ds ventilation for the combustion air.
This is valid also for the room the boiler will
be installed in.
The boiler must be installed in a suitable room
pursuant to applicable standards and laws
which shall be considered as having been
incorporated in full in this manual.

10
fig. 6
fig. 7
fig. 8
2 Ø min. 2 Ø min.
Ø
1,5 m min.
Ø
2 Ø
1 m max. 1 m max.
> 3 Ø> 3 Ø
1,5 m min.
2 Ø
Inclination
min. 3%
Inclination
min. 3%
246
135
Ø 130
600 476
855
Installation info
DIMENSIONAL HEIGHTS FOR CONNECTING THE
FLUE GAS EXHAUST DUCTS
WARNING:
The boiler is fitted with an automatic safety
reset device as protection against leakage of
combustion products inside the building (fig.8).
After 15 minutes the boiler will automatically
reset.
It is absolutely forbidden to tamper with
and/or exclude the safety device.
If the boiler cuts off regularly, check the flue
gas exhaust duct.This duct may be obstructed
or may be unsuitable for the discharge of flue
gas into the atmosphere.
UNICAL waives all liability for damage cau-
sed as a result of incorrect installation, use,
modification of the boilers or for non-ob-
servance of the instructions provided by
the manufacturer or applicable installation
standards for the product in question.

11
Installation info
fig. 9
Pursuant to the directives of regulations in
force, discharge of forced draught boilers can
2.2.6 - POSITIONING OF TERMI
NALS FOR TYPE ‘’C’’
BOILERS
either take place through the roof or directly
outwards the room they are installed in. The
following distances shall be considered for
terminals proper positioning:
POSITIONING OFTERMINALS FOR "FORCED DRAUGHT" BOILERS
Min.
POSITIONING OF THE TERMINAL distances in mm.
Under a window A 600
Under a ventilation opening B 600
Under a gutter C 300
Under a balcony (1) D 300
From an adjancent window E 400
From an adjacent ventilation opening F 600
From vertical or horizontal air pipes or drains (2) G 300
From an external corner of the building H 300
From an internal corner of the building I 300
From the ground or from another floor L 2500
Between two vertical terminals M 1500
Between two horizontal terminals N 1000
From a facing front surface without opening or teminals within a radius
of 3 mt. from smoke outlet point O 2000
As above, but with openings or terminals within a radius of 3 mt. from
smoke outlet point P 3000
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 of not less than 500 mm shall be adopted in placing the terminals, due to the proximity to materials subject to the action of
products of combustion such as plastic gutters or waterspouts, wooden jetties, etc.) unless adequate screeening measures are taken for
the said materials.
FLUE TERMINAL POSITIONING
FORCED DRAUGHT BOILER
The distances specified in appliance standar-
ds and laws must be complied with when po-
sitioning the boiler vent terminals on walls.

12
2.2.7 - SMOKE DISCARGE AND
AIR SUCTION DUCT
CONFIGURATION
C12, C32, C42, C52, C62,
C82 - B22
type
C12
type
C32
type
C52
type C82
type
C62
type
C42
C12 Boiler designed for connection to hori-
zontal exhaust and suction terminals
directly into the atmosphere
using coaxial or dual ducts.The distan-
ce 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.
C32 Boiler designed for connection to verti-
cal discharge and suction outlets directly
into the atmosphere
using coaxial or dual ducts.The distan-
ce 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 col-
lective chimneys including two ducts,
one for the suction of com-
bustion air and the other for the exhaust
of the combustion products,
through coaxial or dual ducts.
The chimney must comply with rele-
vant applicable law provisions.
C52 Boiler with separate combustion air
suction and combustion product
exhaust ducts.
These ducts can discharge into are-
as with different pressure.
The dual ducts must not be located
on two opposite walls.
C62 Boiler that has to be connected to a
system of air supply and smoke of ap-
proved type and sold apart.
C82 Boiler designed for connection to an air
supply terminal and fitted to an indivi-
dual or shared chimney.
The chimney must comply with rele-
vant applicable law provisions.
Note: type B22
is not approved by
Turkish market.
Installation info

13
600 476
880 95
182
Ø 100
165
fig. 11
To 1,5 m
fig. 10
Diaphragm
DIMENSIONAL HEIGHTS FOR CONNECTION OF THE FLUE GAS DISCHARGE
TO COAXIAL DUCTS
Neoprene
seal
EXAMPLE WITH COAXIAL PIPES
2.2.8 Discharge of flue gas into
coaxial ducts with a diameter
of 100/60 mm (Type A acces-
sories)
Type C12
The minimum lenght of horizontal coaxial
ducts is 0.5 metres.The maximum allowa-
ble length of horizontal coaxial ducts is 3
metres; for each additional bend the maxi-
mum allowable length must be reduced by
1 metre. Moreover, the duct must have a
downward dip of 1% towards the outlet point
to prevent rain water from getting into the
duct.
Type C32
The minimum lenght of vertical coaxial
ducts is 0.5 metres.The maximum allowa-
ble length of vertical coaxial ducts is 4 me-
tres including the stack; for each additio-
nal bend the maximum allowable length
must be reduced by 1 metre.
The diaphragm supplied with the boiler
must be inserted in the flue gas exhaust
pipe as shown in figure 10 for installa-
tions with a coaxial pipe of 0.5 m to 1,5
m.
Installation info
Diaphragm

14
fig. 13
fig. 12
Installation info
Diaphragm
EXAMPLEWITH DUAL DUCT
Up to ΔΔ
ΔΔ
ΔP = 40 Pa
Neoprene seal
2.2.9 Flue gas exhaust and air
suction with dual ducts with 80
mm diameter (type B acces-
sories)
N.B. The maximum allowable load loss
must be the same as the values
shown in the following examples,
depending on the type of installation.
For all installations with a load loss
of less than or equal to 40 Pa, it is
necessary the fit the diaphragm pro-
vided inside the flue gas discharge
duct (see fig. 12).
Important
If the flue gas discharge duct has to run
through walls and/or infrastructures or if it
is easily accessible, it must be properly
insulated as it can reach very high tempe-
ratures – over 120°C.
Diaphragm
DIMENSIONAL HEIGHTS FOR CONNECTION OF FLUE GAS DISCHARGE WITH
DUAL DUCTS
600 476
880
Ø 80
182
120
165

15
fig. 15
>500
_
Installation info
Example No. 1
Primary air suction from perimeter wall and flue
gas discharge on roof.
Maximum allowable load loss:
65 Pa

16
Example No. 2
Primary air suction from perimeter wall and
flue gas discharge from the same outside pe-
rimeter wall.
Maximum allowable load loss:
80 Pa
fig. 16
45
Hmin. = 165 mm
135
Min
200 mm
fig. 17
A
2
1
B
1
2
Installation info
CALCULATION OF PRESSURE LOSSES
FOR DISCHARGE AND SUCTION DUCTS
Bear in mind the following parameters when
calculating pressure losses:
- for each metre of duct with Ø 80 (both
suction and discharge) the pressure loss
is 2 Pa;
- for each 90° Ø 80 (R=D) bend with long
radius, the pressure loss is 2 Pa;
- for each 90° Ø 80 (R=½ D) bend with
short radius, the pressure loss is 6 Pa in
suction and 8 Pa in discharge;
- for the Ø 80 L = 0.5 m horizontal air inlet
terminal, the pressure loss is 3 Pa;
- for the Ø 80 L = 0.6 m horizontal
discharge end section, the pressure loss
is 5 Pa;
- 2 short radius 90° Ø 80 curves + 1
adapter Ø 80, the pressure loss is 14
Pa. Example of check using wide radius
bends:
- 2 Ø 80 long radius 90° bends +1 adapter
Ø 80 = (14 Pa)
- 29 mt duct Ø 80 x 2 = (58 Pa)
NB: These values refer to di-
scharges through original UNI-
CAL non-flexible and smooth
ducts.
- horizontal Ø 80 air inlet terminal = 3 Pa
- horizontal Ø 80 terminal = 5 Pa
Tot. pressure loss = 80 Pa
2.2.10 - MEASUREMENTS OF
COMBUSTION EFFICIENCY
(Type A accessories)
Coaxial ducts
To determine combustion efficiency the fol-
lowing measurements must be made:
- the combustion air measured in hole 2(see
fig. 17).
- the flue gas temperature and CO2 measu-
red in hole 1 (see fig. 17).
(Type B accessories)
Dual ducts
To determine the combustion efficiency the
following measurements must be made:
- the combustion air measured in 2(see
fig. 17).
- the flue gas temperature and CO2 measu-
red in hole 1(see fig. 17).
Make these measurements with the boiler
running.
Smoke
Air
Analyser
probe
Analyser
probe
Analyser
probe
2.2.11 - CONNECTION TO THE
GAS MAINS
The supply pipe must have a section which is
the same as or greater than the one used in
the boiler.
Comply with the applicable installation
standards which shall be considered as
The seal test must be conducted using fuel
gas: use air or nitrogen.
When gas is flowing in the pipes, remem-
ber never to look for gas leaks using a
naked flame.
Use specific products found on the market
for the purpose.
having been incorporated in full in this
manual.
Before opening the internal gas distribu-
tion system; i.e. before connecting the gas
meter, all seals must be checked.
If any part of the system is concealed the
seals must be checked before the pipes are
covered.

17
Installation info
fig. 18
fig. 19
PRODUCTION OF D.H.W.
Drawing temperature °C
Flow rate (Q) l/h
Pressure available m.c.a.
DIAGRAMOFFLOW RATE/PRESSUREAVAILABLEFOR THEINSTALLATION
2.2.12 – HYDRAULIC CONNECTION
Before installing the boiler we recommend that
the system be cleaned to remove any impuri-
ties which could originate from components
and which could risk damaging the circulating
pump and exchanger.
HEATING
The heating flow and return must be connected
to the relative ¾” connections of the boiler M
and R(see fig. 5).
When determining the size of the heating cir-
cuit pipes it is essential to bear in mind the
load losses induced by radiators, any thermo-
static valves, radiator cut-off valves and the
configuration of the system.
We recommend that the discharge of the sa-
fety valve mounted in the boiler be conveyed
into the sewer.
If this precaution is not taken, activation of
the safety valve may result in flooding of the
room where the boiler is installed.
UNICAL shall not be held responsible for da-
mage caused by non-observance of this tech-
nical precaution.
UNICAL shall not be held responsible for
damage caused by non-observance of this
technical precaution.
D.H.W.
Outlet and inlet of D.H.W. must be connected
to the relative ½” connections of the boiler C
and F(see fig. 5).
The mains supply pressure must not exceed
7 bar. A pressure reducer and the sanitary
expension vessel kit must be installed if the
pressure is higher.
It is advisable to limit the pressure in the
D.H.W. system to 3 bar.
WARNING
Depending on the hardness of the supply
water, it is important to assess the conve-
nience of installing a domestic device to
dose products of food purity which can be
used to treat the drinking water.
It is always advisable to treat the water if
the supply water has a hardness value of
more than 20°F.
WARNING
Due to its pH value, water supplied from
normal water softeners may not be compa-
tible with some components of the heating
system.
IMPORTANT
The outlet of the safety valves in the boiler
should be connected to the drainage sy-
stem, otherwise
the room may get flooded if the safety val-
ves come into operation.
UNICAL shall not be held responsible for
danaged caused by non-observance of this
technical precaution.
2.2.13 - CONNECTION TO THE
POWER MAINS
The IVEN B60 boiler is supplied with a triple-
pole lead, already connected at one end to
the electronic board and protected against
tearing by a special cable clip.
The boiler must be connected to the power
mains at 230V-50Hz.
Make sure the poles correspond, correctly
connecting phase and neutral.
When installing the boiler comply with
applicable standards which shall be con-
sidered as having been incorporated in
full in this manual.
A bipolar switch must be installed upstream
of the boiler to enable all maintenance opera-
tions to be carried out safely.
The boiler mains supply must be protected by
a differential magnetothermal switch with ap-
propriate breaking power.
The mains power supply must be earthed.
This fundamental requirement for safety pur-
poses must be checked; in case of doubt,
ask for a professionally qualified technician
to check the electrical system.
UNICAL disclaims all liability for damage
on injury caused by failure to earth the sy-
stem properly.
Gas, domestic water and central heating pi-
pes are not suitable for earthing purposes.
ΔΔ
ΔΔ
Δt mean = 41,9°C
Quantity drawn at 10 litres/min

18
IVEN B60 TN/TFS 24
fig. 20
Installation info
2.3 - WIRING DIAGRAM
A1...A6 = Utilities connectors
AG = Antifrost
DK = Safety pressure switch against
Low water level
E/I = Summer/Winter switch
IG = Main switch
LL = Power light
MD = Coil modulating
MVD = Motore 3-way valve
P = Circulating pump
P1 = Temperature regulator (factory
setting)
SR = Heating detector
SS = D.H.W. detector
TA = Ambient thermostat (optional)
TF = Flue gas anti-overflow sensor
WHITE
GREEN
RED
BLUE
BROWN
D.H.W. C.H.
MVD
P
MODULATIN BOARD
ALIMENTATION 230 V- 50 Hz
BLUE
BROWN
BROWN
BLACK
IG
BROWN
BLUE
ALIMENTATION 230 V- 50 Hz
TA
BLACK
A3
A2
GND2 GND3
A1
Y2
Y1
LINE
21
GND1
ROOM
STAT
12
HTL
GND1
(2)
(5)
HIGH
A4
P3
A6
A5
(4)
(3)
SOFTL
P2
TA
PC
160
P1
CH-POWER
TMOD
(1)
A3
GND2
GND3
GND
LINE
NEUTRAL
Y2
Y1
ROOM STAT
MAIN SWITCH
A1
A2
(1)
(2)
TMOD
TAON/OFF
TA OMODULATING
HLT
SEEPER CONTACT (PT)
(3)
HIGH
BURNER LEVEL ‘’LOW’’
(4) (5)
SOFTL
BURNER LEVEL ‘’HIGH’’
NATURAL GAS
GPL
CONTINUES PUMP
PUMP POST CIRCULATION
TA
NIGHT
BURNER IGNITION OFF
BURNER IGNITION ON
PT
BLACK
A4
ORANGE
GREY
BLUE
WHITE
RED
E/I AG LL SS FR
BROWN
BLUE
A5
SR DK TF MD
WHITE
WHITE
WHITE
BROWN
BLUE
BLUE
GREEN
GREEN
A6
VERSION TN VERSIONTFS
GREEN
GREEN
WHITE
BROWN
WHITE
WHITE
MD
DK
SR

19
WIRING DIAGRAM - IGNITION CARD IVEN B60 TN/TFS 24
fig. 21
Installation info
BLACK
BLACK
BLEU
YELLOW/GREEN
BLEU
BROWN
BLACK
BLEU
BLACK
ORANGE
WHITE
RED
BLU
YELLOW/GREEN
TEFLON RED (E. ACC. 1)
TEFLON WHITE (E. RIV)
GREEN
ALIMENTAT.
230 V - 50 Hz
ALIMENTAT.
230 V - 50 Hz
ELECTRODE OUTLET CONNECTION
MODULATING
BOARD
MODULATING
BOARD
CONNECTION
BROWN
BLEU
YELLOW/GREEN
BROWN
BLEU
BLEU
BLEU
BLEU
BROWN
BLACK
ORANGE
BROWN
IVEN B60 TN 24 IVEN B60 TFS 24

20
Rubinetto di carico
impianto
fig. 22
Installation info
fig. 23
2.4 - FILLING THE SYSTEM
After completing all the connections of the
system the heating circuit can be filled.
This filling operation must be performed with
care as follows:
- open the air vents of the radiators and che-
ck that the automatic air vent in the boiler
is functioning;
- gradually open the special water inlet tap
and check operation of any automatic air
vents installed in the system;
- close the air vents on the radiators as soon
as water comes out;
- use the pressure gauge on the boiler to
check that the pressure has reached the
value of 0.8/1bar;
- close the water inlet tap and then release
the air again through the radiator air vents;
- after switching on the boiler and after the
system has reached the correct tempera-
ture, stop the pump and repeat the air re-
lief operations;
- let the system cool down and then adjust
the water pressure to 0.8/1 bar.
WARNING
To optimise the efficiency and safety of
heating systems used for domestic pur-
poses, to keep them in good working or-
der over time, to ensure long-lasting effi-
cient functioning also of ancillary equip-
ment and to minimise energy consump-
tion, thus complying with relative standar-
ds and laws, it is essential to treat the
water using specific products compatible
with multimetal systems.
WARNING
The low water level safety pressure switch
does not give electrical impulse to the burner
to ignite when the pressure is lower than 0.4/
0.6 bar. The pressure of the water in the hea-
ting system must not be lower than 0.8/1bar;
if this value is lower use the water inlet tap on
the boiler to adjust the pressure.
This must be performed when the system is
cold. Use the temperature and pressure gau-
ge on the boiler to read the pressure value of
the circuit.
NB: After a given period of inactivity
the pump could be blocked.
Before switching on the boiler it
is important to restart the pump
as follows: loosen the protection
screw in the centre of the pump en-
gine, in sert a screwdriver in the hole
and then manually rotate the pump
shaft clockwise.
Once the pump has been restarted
tighten the protection screw
and check that there are no water
leaks.
WARNING
Once the protection screw has been remo-
ved a little water may leak out. Before re-
placing the cover of the boiler dry any wet
surfaces.
Example: At 25°C, the nominal resistance is 10067 Ohm
At 90°C, the nominal resistance is 920 Ohm
Relationbetween thetemperature (°C)and nominalresistance (Ohm)
of the heating sensor SR and D.H.W. sensor SS
TABLE OF RESISTANCE VALUES AS A FUNCTION OF THE TEMPERATURE
OF THE HEATING SENSOR (SR) AND D.H.W. SENSOR (SS)
T°C0123456789
032755 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 3768
50 3627 3491 3362 3238 3119 3006 2897 2792 2692 2596
60 2504 2415 2330 2249 2171 2096 2023 1954 1888 1824
70 1762 1703 1646 1592 1539 1488 1440 1393 1348 1304
80 1263 1222 1183 1146 1110 1075 1042 1010 979 949
90 920 892 865 839 814 790 766 744 722 701