Unical EVE 05 RTN 24 Quick start guide

EVE 05
RTN 24 - RTFS 24
CTN 24 F - CTFS 24 F
CTN 24 - CTFS 24
00332243 - 3rd edition - 10/2010
INSTALLATION USE
AND MAINTENANCE
English

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 correspond 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.
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 14°f 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
Users easy guide
REMEMBER:
• Periodically check the water pressure into the boiler.
• Ascertain to be able to turn OFF the appliance in case of emergency (power, gas and water
supply).
• Make sure to be familiar with the switching ON and OFF and with the temperature adjusting
knobs.
• The user is not allowed to remove the casing and get access to the internal parts of the boiler.
• Don’t hang dresses, …..etc. to the boiler.
• Don’tforgettoplantheannualmaintenance
INFORMATION FOR YOUR SAFETY
• GAS LEAK
Don’t switch on the appliance if there is a suspicion of gas leak.
Contact IMMEDIATELYthe technical personnel.
DON’T SEEK GAS LEAKS WITH NAKED FLAMES!!
• LACK OF WATER
If the pressure decreases repeatedly below the minimum operational pressure it means that
there is a lack of water in the heating circuit. Contact the technical personnel for an
inspection to the system.
°C
Toputagaintheboiler inoperation,it willbeneces-
sary to press the button.
In case the boiler goes frequently into lockout po-
sition,contact the service technician.
Reset
push
button
Display
• LOCKOUT
The function of this symbol is to indicate that the burner is in lockout position, due to a lack
of gas (check if the gas cock is open) or to a non detected ignition.
GAS VALVE LABEL
00331980

4
Users easy guide
Reset
push button Central heating
temperature adjusting
knob
Domestic Hot Water
temperature adjusting
knob
Manometer
CONTROLS
HOW TO START THE BOILER
- Swicth ON the boiler through the external switch.
- Check if a room thermostat or a chronothermostat is fitted and set it on heat request.
MAX
M
I
N
MAXMIN
Set the Central
Heating tempera-
ture knob into the
range shown in
the figure
Set the Domestic
Hot Water tempera-
ture knob into the
range shown in the
figure
By adjusting the Domestic Hot Water
temperature to the real required tem-
perature, you will avoid to mix hot wa-
ter with cold water, in this way reduc-
ingboththeboileroperationcostsand
the scaling formation.
Winter operation
(Central Heating + Domestic Hot Water) for C models
(Central Heating only) for R models
Summer operation
(Domestic Hot Water only) for models C
MAX
M
I
N
Set the Central
Heating tempera-
ture knob to the
symbol
MAXMIN
Set the Domestic
Hot Water tempera-
ture knob into the
range shown in the
figure
°C
°C
The display indicates that the boiler
is in Central Heating mode and the
flow temperature is 63°C.
The display indicates that the boiler
is in Domestic Hot Water mode and
the water temperature is 38°C.
HOW TO ADJUST THE BOILER
MAX
M
I
N
MAXMIN
°C
®
MAX MAXMIN
M
I
N
EVE
05
Display

5
Users easy guide
HOW TO SET THE WATER PRESSURE INTO THE SYSTEM
The water pressure into the system has to be checked periodically, in order to be sure of the boiler
correct operation. The manometer arrow has to be above 0.8/1 bar when the boiler is switched off
or in stand-by position. The boiler lock-out due to lack of water is displayed with the failure code
(low Pressure). In order to see this code, once the boiler is in lock-out and the symbol
appears, push the reset push-button.
Inorder toincreasethe water pressureintothe system,openthe fillingvalve(black) undertheboiler;
when the pressure indicated on the manometer is between 0.8 and 1 bar, close the filling valve.
CLEANING
For the simple cleaning use a dry cloth. To remove hard blots, clean with a wet cloth and wipe with
a dry cloth. DO NOT USE abrasive products.
ANTIFROST PROTECTION
The boiler is equipped with an antifrost system that operates au-
tomatically when the boiler water temperature decreases under
6°C:the burner andthepump are automaticallyputinto operation
until the Central Heating system water temperature reaches
16°C.This protection is active only if the boiler is electrically
feeded.
BC
MAX
M
I
N
MAXMIN
HOW TO SWITCH-OFF THE BOILER
For short periods: Rotate the knob “B” in position
For long periods: Cut off the electrical and gas supply.
°C
Position during
water pressure
setting
Standard posi-
tion during
operation
Set the Central Heating and
Domestic Hot Water temperature
knobs to the symbol shown in the
figure. For R version boilers only knob
B is there.

6
General info
DATA PLATE
LEGEND:
1 = CE Surveillance notify body
2=Boiler type
3=Boiler model
4=Number of stars (Directive 92/42/CEE)
5=(S.N°) Serial number
6=P.I.N. code
7=Approved fluing configurations
8=(N0x) N0x class
A = Central Heating circuit features
9=(Pn) Nominal output
10 = (Pcond) Condensing nominal output
11 = (Qmax) Nominal heat input
12 = (Adjusted Qn)Adjusted for nominal Heat input
13 = (PMS) Max. pressure C.H. system
14 = (T max) Max. C.H. temperature
B = Domestic Hot Water circuit features
15 = (Qnw) Nominal heat input in D.H.W. mode (if different from Qn)
16 = (D) Specific D.H.W. flow rate according to EN 625 - EN 13203-1
17 = (R factor) N° taps based on the quantity of water declared EN
13203-1
18 = (F factor) N°stars based on the quality of water declared
EN 13203-1
19 = (PMW) Max. pressure D.H.W. system
20 = (T max) Max. temperature D.H.W system
C = Electrical features
21 = Electrical power supply
22 = Consumption
23 = Protection grade
D = Countries of destination
24 = Direct and indirect country of destination
25 = Gasfamily
26 = Supply pressure
E = Factory setting
27 = Adjusted for gas type X
28 = Space for national brands
CEMarking
- TheCEmarkingdocumentsthattheboilerssatisfy:
- TheessentialrequirementsoftheDirectiveregardinggasappliances(Directive
90/396/CEE)
- TheessentialrequirementsoftheDirectiveregardingelectromagneticcompatibility
(Directive89/336/CEE)
- TheessentialrequirementsoftheEfficiencyDirective(Directive92/42/CEE)
- TheessentialrequirementsofthelowvoltageDirective(Directive73/23/CEE)
®
1
2
3
5
7 8
6
4
9
11
13
10
12
14
15
17
19
16
18
20
28
A
B
21 22
23
24 25 26
27
C D
E

7
General info
1
2
3
For your own safety, observe these safety instructions.:
PLEASE NOTE:
User tip for the optimum utilisation
and setting of the control(s) plus
usefulinformation.
WARNING
from risk of electric shock.
WARNING
Identifies potentially dangerous
situations.
User easy guide ................................................................ pag. 4-6
TECHNICAL FEATURES
AND DIMENSIONS ........................................................... pag. 8
1.1 Technical features ................................................................... pag. 8
1.2 Dimensions .............................................................................. pag. 8
1.3 Hydraulic circuits ..................................................................... pag. 9
1.4 Technical data ......................................................................... pag. 12
1.5 Main characteristics ................................................................ pag. 12
DIRECTIONS FOR
INSTALLERS......................................................................... pag. 13
2.1 Installations rules .................................................................... pag. 13
2.2 Installation ............................................................................... pag. 13
2.2.1 Packing ....................................................................... pag. 13
2.2.2 Positioning the boiler .................................................. pag. 14
2.2.3 Assembling the boiler ................................................. pag. 15
2.2.4 Ventilation ................................................................... pag. 15
2.2.5 Flue gas discharge system ........................................ pag. 15
2.2.6 Discharge and suction pipe configuration .................. pag. 17
2.2.7 Positioning of terminals for type C boilers .................. pag. 18
2.2.8 Smoke evacuation Ø80 air suction flange .................. pag. 19
2.2.9 Discharge of flue gas into coaxial ducts with a
diameter of 100/60 mm (Type A accessories) ........... pag. 20
2.2.10 Flue gas discharge and air suction with separate
pipes with 80 mm diameter ........................................ pag. 21
2.2.11 Measurements of combustion efficiency ................... pag. 23
2.2.12 Connection to the gas mains ...................................... pag. 24
2.2.13 Hydraulic connection .................................................. pag. 24
2.2.14 Electrical connection ................................................. pag. 26
2.2.15 Jumper location ......................................................... pag. 26
2.3 Wiring diagram ........................................................................ pag. 27
2.3.1 Pratical connection diagram ..................................... pag. 27
2.4 Filling the system ................................................................... pag. 28
2.5 Starting the boiler ................................................................... pag. 28
2.6 Adjusting the burner ............................................................... pag. 29
2.7 Modification of other gases ................................................... pag. 30
2.8 Failure code ............................................................................ pag. 31
USERS' INSTRUCTION ............................................... pag. 33
3.1 Control panel ........................................................................... pag. 33
3.2 Switching on/off ....................................................................... pag. 34
3.3 Antifrost protection .................................................................. pag. 35
3.4 Important suggestion and notes ............................................. pag. 35

8
Installation info
1TECHNICAL FEATURES AND DIMENSIONS
•Pump anti-jamming function;
•Pump over run function;
•High limit thermostat (95°C);
•Three-speed circulating pump;
•Expansion vessel;
•Automatic air vent;
•C.H. system water filling valve;
•Safety pressure switch for low water level;
•Priority flow switch for D.H.W.;
•Tap water flow rate restrictor set at 12
litres/min.
•Control panel with IP X4D insulation pro-
tection
•Manometer;
•Warning light for: presence of power, re-
quest for heating, burner in operation, lock
out, by the display
•D.H.W. temperature selector (35/57°C) for
EVE 05 CTN 24 F - CTFS 24 F - CTFS 24
CTN 24 ;
•C.H. temperature selector (45/78°C) + sum-
mer/winter position.
•Reset push button / Chimney sweeper but-
ton / Error codes visualization / Thermo-
meter
•Paper mounting jig for connections predi-
sposition
•Mounting jig opt.
•Flue gas antispillage thermostat (EVE 05
TN)
1.1 -TECHNICAL FEATURES
EVE 05 is a wall hung gas boiler with built-in
atmospheric gas burner; it is available in the
following versions:
24 with 24 kW output;
Cwith instantaneous D.H.W.
production;
Rfor heating only;
TN with natural draught open chamber;
TFS with forced draught room sealed
combustion chamber;
All versions have electronic ignition.
Models in the EVE 05 series are the following:
EVE 05 CTN 24 F open boiler, with electronic
ignition and instantaneous D.H.W. produc-
tion;
EVE 05 RTN 24 open boiler, with electronic
ignition, for heating only;
EVE 05 CTFS 24 F forced draught room se-
aled boiler, with electronic ignition and in-
stantaneous D.H.W. production;
EVE 05 RTFS 24 forced draught room sea-
led boiler, with electronic ignition for heating
only;
EVE 05 CTN 24 open boiler, with electronic
ignition and instantaneous D.H.W. produc-
tion with DHW plates heat exchanger
EVE 05 CTFS 24 forced draught room sea-
led boiler with electronic ignition and instan-
taneous D.H.W production with DHW plates
heat exchanger
EVE 05 is supplied with all control and safety
devices according to the latest laws in for-
ce.
The main technical features of the EVE 05
boilers are summarised below.
•Bithermal, copper, high performance heat
exchanger (CTN 24F - CTFS24F);
• Plates heat exchanger for the DHW pro-
duction (CTN 24 – CTFS 24)
•Electronic ignition;
•Electronic flame modulation;
•Minimum output control;
•Electronic control of ignition ramp;
•Anti-freeze function;
fig. 1
1.2 - DIMENSIONS
420
700
123 87 120 90
152
85
107
43 56 60 70 61131
CFGRM
Rc
V
s
Si
M C.H. system flow
C D.H.W. outlet
G Gas inlet
F D.C.W. inlet
R C.H. system return
Rc Filling valve
VS Heating circuit safety valve
Si Boiler drain cock
view from above
view from below
310

9
Installation info
fig. 3
EVE 05 CTN 24 F
EVE 05 CTFS 24 F
fig. 2
CF G R
1
M
3
4
2
5
6
7
9
10 11
8
12
13
14
15
16
17
18
19
20
21
1
3
4
2
5
6
7
8
9
10
11
12
13
CF G
14
15
16
17
18
19
20
21
22
23 RM
1.3 - HYDRAULIC CIRCUIT
1 Flow switch - Cold water filter
2 D.H.W. flow restrictor
3 Gas valve
4 D.H.W. temperature sensor
5 Burner nozzles
6 Ionisation/Ignition electrode
7 Burner
8 Bithermal heat exchanger
9 H.L. thermostat
10 Flue gas manifold/down-draught
diverter
11 Flue gas anti-spillage thermostat
12 Expansion vessel inflating valve
13 Expansion vessel
14 Automatic air vent
15 Circulating pump
16 C.H. temperature sensor
17 Minimum water pressure switch
18 By-pass (unadjustable)
19 Boiler drain cock
20 Heating circuit safety valve
21 Filling valve
C D.H.W. outlet
F D.C.W. inlet
G Gas inlet
R C.H. system return
M C.H. system flow
1 Flow switch - Cold water filter
2 D.H.W. flow restrictor
3 Gas valve
4 D.H.W. temperature sensor
5 Burner nozzles
6 Ionisation/Ignition electrode
7 Burner
8 Bithermal heat exchanger
9 H.L. thermostat
10 Flue gas extractor fan
11 Air/flue coaxial duct
12 Micro-switch on flue gas pressure
switch
13 Flue gas pressure switch
14 Expansion vessel inflating valve
15 Expansion vessel
16 Automatic air vent
17 Circulating pump
18 C.H. temperature sensor
19 Minimum water pressure switch
20 By-pass (unadjustable)
21 Boiler drain cock
22 Heating circuit safety valve
23 Filling valve
C D.H.W. outlet
F D.C.W. inlet
G Gas inlet
R C.H. system return
M C.H. system flow

10
General info
fig. 5
EVE 05 RTFS 24
fig. 4
EVE 05 RTN 24
FG RM
1
2
3
4
67
5
9
10
11
12
13
14
15
16
17
18
8
1 Gas valve
2 Burner nozzles
3 Ionisation/Ignition electrode
4 Burner
5 Monotermal heat exchanger
6 Flue gas manifold/down-draught
diverter
7 Flue gas anti-spillage thermostat
8 H.L. thermostat
9 Expansion vessel inflating valve
10 Expansion vessel
11 Automatic air vent
12 Circulating pump
13 C.H. temperature sensor
14 Minimum water pressure switch
15 By-pass
16 Boiler drain cock
17 Heating circuit safety valve
18 Filling valve
F D.C.W. inlet
G Gas inlet
R C.H. system return
M C.H. system flow
1 Gas valve
2 Burner nozzles
3 Ionisation/Ignition electrode
4 Burner
5 Monotermal heat exchanger
6 Air/flue coaxial duct
7 Flue gas extractor fan
8 Micro-switch on flue gas pressure
switch
9 Flue gas pressure switch
10 H.L. thermostat
11 Expansion vessel inflating valve
12 Expansion vessel
13 Automatic air vent
14 Circulating pump
15 C.H. temperature sensor
16 Minimum water pressure switch
17 By-pass
18 Boiler drain cock
19 Heating circuit safety valve
20 Filling valve
F D.C.W. inlet
G Gas inlet
R C.H. system return
M C.H. system flow
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
10
FG RM