Fondital PANAREA COMPACT Installation, Use And Maintenance Manual

VELA
COMPACT
INSTALLATION
USE AND MAINTENANCE
EN
IST 04 C 399 - 01
Dear Customer,
Thank you for choosing and buying one of our boilers. Please read these instructions carefully in order to install, operate, and maintain
this equipment properly.
WARNING
• We inform users that:
• Boilers shall be installed by an authorised company under the requirements set forth by the prevailing rules, in full compliance with
the prevailing regulations and standards.
• Anyone entrusting installation to an unqualified installer will be subject to administrative sanctions.
Boilers must be maintained by qualified personnel only, under the requirements set forth by the prevailing rules.
WARNING
• In existing buildings, this natural draught boiler must be connected only to flue pipes shared by several houses to vent the
combustion residues outside the premises inside which boiler is installed.
• Boiler takes the air necessary to combustion directly from the installation premises and features a wind-proof flue.
• Due to a lower efficiency, any other use of this boiler must be avoided as it would result in a higher energy consumption and higher
operating costs.
We hereby inform you that certain models, versions and/or accessories relevant to the products this manual refers to, might not be
available in some countries.
Therefore, it is recommended to contact the manufacturer or the importer in order to get the necessary information about the actual
availability of such models, versions and/or accessories.
The manufacturer reserves the right to modify the products and/or its components as deemed necessary, in any moment and without
prior notice.
This instruction manual is available in two languages, Italian and English, without prejudice to the prevalence of Italian language in
case of differences in translation and/or dispute on construction of the text.
2
General information for fitters, maintenance technicians and users
This INSTRUCTION MANUAL, which is an integral and indispensable part of the product, must be handed over to the user by the installer and
must be kept in a safe place for future reference. The manual must accompany the boiler should it be sold or its possession transferred. Following the boiler installation, the fitter is to advise the user about boiler operation and its safety devices
This boiler must be used for the purposes for which it has been intended. Any other use shall be considered incorrect and therefore
dangerous.
The boiler must be installed by qualified personnel, 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 the manufacturer from any and all contractual and extra-contractual liability.
Before installing the boiler, check that the technical data correspond to the requirements for its correct use in the system.
Check that the boiler is intact and it has not been damaged during transport and handling. Do not install equipment which is damaged and/or
faulty.
Do not obstruct the air suction and/or heat dissipation openings.
Only manufacturer approved and supplied accessories or optional kits (including electric ones) are to be installed.
Properly dispose of the packaging 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.
Manufacturer approved and supplied parts must be used for all repairs to the boiler.
Non-observance of the above requirements may affect the safety of the boilers and endanger people, animals and property.
The manufacturer, in order to guarantee efficient and correct functioning of the equipment, recommends the boiler to be serviced
and repaired by an authorized Service Centre.
Routine boiler maintenance is to be performed according to the schedule indicated in the relevant section of this manual.
Appropriate boiler maintenance ensures efficient operation, environment preservation, and safety for people, animals and objects.
In the event of long periods of inactivity of the boiler, disconnect it from the power mains and close the gas tap.
Warning! Should power mains be disconnected, boiler electronic anti-freeze function will not be operative.
Should there be a risk of freezing, add antifreeze: 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.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their
safety.
Children should be supervised to ensure that they do not play with the appliance.
IMPORTANT
If you smell gas:
- do not turn on or off electric switches and do not turn on electric appliances;
- do not ignite flames and do not smoke;
- close the main gas tap;
- open doors and windows;
- contact a Service Centre, a qualified installer or the gas supply company.
Never use flames to detect gas leaks.
The boiler is designed 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.
3
CONTENTS
General information for the Installer, Maintenance Technician and User ............................................................................................................................ Page3
1. Instructions for the User .................................................................................................................................................................... Page 6
1.1 Control panel .............................................................................................................................................................................................................................. Page 6
1.2 Operating the boiler ................................................................................................................................................................................................................ Page 7
1.2.1 Switching on ................................................................................................................................................................................................................. Page 7
1.2.2 Operation ....................................................................................................................................................................................................................... Page 7
1.3 Boiler shut-down ....................................................................................................................................................................................................................... Page 8
1.3.1 Burner shut-down ....................................................................................................................................................................................................... Page 8 1.3.2 Shut-down due to overheating ............................................................................................................................................................................. Page 8
1.3.3 Shut-down due to low water pressure ................................................................................................................................................................ Page 8
1.3.4 Shut-down due to incorrect air/flue gas system draught............................................................................................................................. Page 8
1.3.5 Shut-down due to malfunction of temperature probes................................................................................................................................ Page 8
1.4 Maintenance .............................................................................................................................................................................................................................. Page 9
1.5 Notes for the User ...................................................................................................................................................................................................................... Page 9
2. Technical characteristics and dimensions ....................................................................................................................................... Page 10
2.1 Technical characteristics .......................................................................................................................................................................................................... Page 10
2.2 Dimensions .................................................................................................................................................................................................................................. Page 11
2.3 Hydraulic layout.......................................................................................................................................................................................................................... Page 12
2.4 Operating data ........................................................................................................................................................................................................................... Page 13
2.5 General characteristics............................................................................................................................................................................................................. Page 13
2.6 ERP and Labelling data ............................................................................................................................................................................................................ Page 14
3. Instructions for the Installer ............................................................................................................................................................. Page 15
3.1 Installation standards ............................................................................................................................................................................................................... Page 15
3.2 Installation .................................................................................................................................................................................................................................... Page 15
3.2.1 Packaging ....................................................................................................................................................................................................................... Page 15
3.2.2 Choosing where to install the boiler ....................................................................................................................................................................... Page 15
3.2.3 Positioning the boiler .................................................................................................................................................................................................... Page 16
3.2.4 Installing the boiler ........................................................................................................................................................................................................ Page 17
3.2.5 Air intake and flue gas discharge system ............................................................................................................................................................... Page 17
3.2.6 Checking combustion efficiency ........................................................................................................................................................................... Page 19
3.2.7 Gas mains connection................................................................................................................................................................................................ Page 19
3.2.8 Plumbing connections............................................................................................................................................................................................... Page 20
3.2.9 Power mains connection.............................................................................................................................................................................................. Page 20
3.2.10 Room thermostat connection (optional equipment)...................................................................................................................................... Page 20
3.3 Loading the system .................................................................................................................................................................................................................. Page 21
3.4. Available head ........................................................................................................................................................................................................................... pag. 3.5 Starting the boiler ..................................................................................................................................................................................................................... Page 22
21
3.5.1 Preliminary checks ...................................................................................................................................................................................................... Page 22
3.5.2 Switching on and switching off ............................................................................................................................................................................. Page 22
3.6 Wiring diagram............................................................................................................................................................................................................................ Page 23
3.7 Adaptation to other gas types and burner adjustment .............................................................................................................................................. Page 24
4. Testing the boiler ............................................................................................................................................................................... Page 26
4.1 Preliminary checks .................................................................................................................................................................................................................... Page 26
4.2 Switching on and switching off ............................................................................................................................................................................................ Page 26
5. Maintenance ....................................................................................................................................................................................... Page 27
5.1 Maintenance schedule ............................................................................................................................................................................................................ Page 27
5.2 Combustion analysis ................................................................................................................................................................................................................ Page 27
5.3 Decommissioning, disassembly and disposal ................................................................................................................................................................. Page 27
6. Troubleshooting ................................................................................................................................................................................ Page 28
7. Manufacturer’s compliance statement ............................................................................................................................................ Page 30
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PICTURE INDEX
Pic. 1 – Control panel...................................................................................................................................................................................................................................Page6
Pic. 2 – Loading tap.......................................................................................................................................................................................................................................Page 8
Pic. 3 – Dimensions.......................................................................................................................................................................................................................................Page 11
Pic. 4 – Hydraulic layout..............................................................................................................................................................................................................................Page 12
Pic. 5 – Installation template.....................................................................................................................................................................................................................Page 16
Pic. 6 – Connection to chimney system.................................................................................................................................................................................................Page 18
Pic. 7 – Dimensions for connection to the flue gas discharge duct............................................................................................................................................Page 18
Pic. 8 – Gas mains connection..................................................................................................................................................................................................................Page 19
Pic. 9 – Available head.................................................................................................................................................................................................................................Page 21
Pic. 10 – Wiring diagram.............................................................................................................................................................................................................................Page 23
Pic. 11 – Natural gas – Lpg selection jumper.......................................................................................................................................................................................Page 24
Pic. 12 – Gas valve adjustment SIEMENS VGU56................................................................................................................................................................................Page 25
Pic. 13 – Gas valve adjustment SIT 845..................................................................................................................................................................................................Page 25
Pic. 14 – Gas valve adjustment SIEMENS VGUS56.............................................................................................................................................................................Page 25
CHART INDEX
No. 1 chart – Led signaling – boiler operation status.......................................................................................................................................................................Page 6
No. 2 chart – Adjustment rates.................................................................................................................................................................................................................Page 13
No. 3 chart – General specifications.......................................................................................................................................................................................................Page 13
No. 4 chart – Combustion data CTN 24 model..................................................................................................................................................................................Page 13
No. 5 chart – ERP and Labelling data.....................................................................................................................................................................................................Page 14
No. 6 chart – “Temperature – nominal resistance” chart of temperature probes...................................................................................................................Page 24
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1. INSTRUCTIONS FOR THE USER
1.1 Control panel
1
2
4
3
5
Pic. 1 – Control panel
1. Boiler working mode led (multi-color)
See no. 1 chart at the bottom of the page for further details on color
displayed by led in relation to boiler working mode.
2. Boiler working mode led (multi-color)
See no. 1 chart at the bottom of the page for further details on color
displayed by led in relation to boiler working mode.
3. Water pressure gauge
The gauge shows water pressure in the CH system.
4. CH selector and adjusting knob
The knob activates or de-activates CH operation, and adjusts CH water
temperature between a minimum of 35°C and a maximum of 78°C.
When the knob is set to
(fully turned counter-clockwise), the boiler
is set to summer mode and CH operation is de-activated.
4. DHW selector and boiler shutdown reset
The knob sets the boiler to stand-by ( position, fully turned counterclockwise), and adjust DHW temperature between a minimum of 35°C
and a maximum of 58°C.
When the boiler has shut down is to be reset by turning the knob to
position.
WARNING
The boiler has a special built-in regulator limiting DHW flow up to 10
liter per minute. In addition to the setting of no. 5 selector,
the temperature of the DHW supplied also depends on the flow requested by the user and the temperature of the water mains supply.
LED 1
LED 2
Power connected to boiler
n/a
GREEN
Flame presence
n/a
YELLOW
Active CH mode
GREEN
n/a
OFF
RED
YELLOW
OFF
RED
OFF
Gas valve alarm
FLASHING GREEN
OFF
Water pressure switch alarm
FLASHING YELLOW
OFF
FLASHING RED
n/a
CH flow probe alarm
FLASHING YELLOW/RED
OFF
DHW probe alarm
FLASHING GREEN/RED
OFF
Shutdown due to flame absence
Flue gas thermostat shutdown
Safety thermostat shutdown
Flow water temperature alarm (>85°)
No. 1 chart – Color displayed by led in relation to boiler operation status
KEY CHART TO ACHRONYMS
OFF
LED off
RED
LED on, displaying the color stated in the chart
FLASHING RED
LED flashing, displaying the color stated in the chart
RED/GREEN
LED flashing, displaying in sequence the colors stated in the chart
n/a
LED status is not relevant
6
1.2 Operating the boiler
1.2.1 Switching on
The following procedures are to be implemented only after the boiler is installed, tested and its installation is certified by a qualified fitter.
• Open the gas stop cock.
• connect power mains to the boiler (no. 2 LED turns on displaying the green color);
• choose boiler mode by means of no. 4 selector (pic. 1);
• set the desired central heating water temperature by means of no. 4 adjusting knob (pic. 1);
• set the desired domestic hot water temperature by means of no. 5 adjusting knob (pic. 1);
• set room temperature by means of room thermostat (when available).
When CH is required, no. 1 LED turns on ( green ).
When flame is present no. 2 LED turns on ( yellow ).
Should the boiler be left inactive for a long time, particularly if boiler is lpg powered, ignition might be difficult.
Before starting the boiler switch on another gas powered device (e.g. kitchen range).
Beware that even by following that procedure, the boiler might still shut down once or twice.
Reset the boiler by turning no. 5 knob to
reset position for a few seconds.
1.2.2. Operation
To prevent frequent ignition and switching off in the heating mode, the boiler has a waiting time of 4 minutes between subsequent ignitions.
Should water temperature in the system fall below 40°C, the waiting time is disallowed and the boiler re-ignites.
Boiler electronics always gives priority to DHW over CH supply.
Temperature can be adjusted within a 35°C to 58°C range.
The boiler is fitted with a flow-limiting device that allows a maximum DHW flow of 10 liter per minute.
Available DHW liters per minute depend on boiler thermal output and water mains supply temperature, according to the following formula:
l = 318/Δt
where Δt = DHW temperature – water mains supply temperature
E.g. when water mains supply temperature is 8°C and DHW is required at 38°C, the value of Δt is:
Δt = 38 °C – 8 °C = 30 °C
and DHW liters per minute) obtainable at the required temperature of 38°C are:
l = 318/30 = 10.6 [liters per minute] (mixed water to the tap).
The boiler is equipped with an anti-frost protection system which is not active when the boiler is in stand-by mode.
When central heating water temperature sensor detects a water temperature of 5°C, the boiler switches on and stays on at its minimum heating
output until the temperature of central heating water reaches 30°C or 15 minutes have elapsed.
Should the boiler shut down, pump operation is in any case granted.
The anti-freeze function only protects the boiler and not the central heating system.
The central heating system must be protected by using an ambient thermostat, although it is disabled when
the selector is set to stand-by.
The heating system can be effectively protected against icing by using specific anti-freeze products that are suitable for multi-metal systems. Do
not use anti-freeze products for car engines, and check the effectiveness of the product used over time.
Where the boiler is left inactive and still connected to power the pump is activated for 30 seconds every 24 hours to prevent seizure.
7
1.3. Boiler shut-down
When any malfunction occurs, the boiler automatically shuts down.
Refer to no. 1 chart (on page 6) in order to detect the boiler operation status.
In order to identify plausible malfunction origin, see no. 6 paragraph “Troubleshooting” at the end of the manual.
In relation to the type of malfunction, proceed as described hereafter.
1.3.1. Burner shut-down
When the burner shuts down, no. 2 LED turns on (red). Should this happen proceed as follows:
- Check the gas stopcock to be open, and gas mains have gas in them e.g. by lighting a kitchen range burner;
- Once gas presence is verified, reset the burner by turning no. 5 selector (pic. 1) to its reset position
: if the equipment does not restart and
shuts down again, after performing two attempts, contact an authorized Service Centre or qualified personnel for service. Should the burner
shut down frequently, signaling a recurrent operation malfunction contact an authorized Service Centre or qualified personnel for service.
1.3.2. Shut-down due to overheating
When central heating flow overheats, no. 1 LED (pic. 1) flashes (red). Should that happen, contact an authorized Service Centre or qualified
personnel to carry out maintenance work.
1.3.3. Shut-down due to low water pressure
In case of shutdown due to water pressure switch intervention, no. 1 LED flashes (yellow).
Fill up the boiler by opening the loading tap A (pic. 2), located in the lower area of the boiler, next to the hydraulic connections.
Water pressure must be 1-1.3 bars while the boiler is cold.
In order to restore water pressure, proceed as follows:
- Turn the filling tap counter-clockwise to let water into the boiler and keep it open until no. 3 pressure gauge (pic. 1) shows that a pressure of
1-1,3 bars is reached; now close the tap by rotating it clockwise.
Should boiler shuts down frequently occur it means there is boiler malfunction in progress. Contact qualified personnel or an authorized Service
Centre for maintenance.
Once the system is filled, close the tap properly. If the tap is not properly closed, as pressure increases,
boiler safety valve may open and water flow out.
Loading tap
Pic. 2 - Loading tap
1.3.4 Shut-down due to flue system incorrect draught
Should the boiler shut down due to an anomaly in the air intake and/or flue gas discharge system, no. 1 LED (pic. 1) turns on ( yellow ). Should
that occur, contact an authorized Service Centre or qualified personnel for maintenance.
1.3.5 Shut-down due to malfunction of temperature probes
Should the burner shut down due to a malfunction of the temperature probes, no. 1 LED (pic. 1) flashes as follows:
- yellow/red for CH probe;
- red/green for DHW probe.
When that happens, contact an authorized Service Centre or qualified personnel to carry out maintenance.
8
1.4. Maintenance
Have routine boiler maintenance performed according to the schedule indicated in the relevant section of this manual.
Appropriate boiler maintenance ensures efficient operation, environment preservation, and safety for people, animals and objects.
Only qualified personnel are to service the boiler.
The manufacturer recommends Customers to contact authorized Service Centers for maintenance and repairs, they are best qualified for that
procedure.
The user may only clean the external casing of the boiler, employing common household products.
Do not use water!
1.5. Notes for the User
The user may only access boiler parts which can be reached without using technical equipment and/or tools: therefore the user is not authorized to remove the boiler casing and act upon inside components.
Nobody, including qualified personnel, is authorized to modify the boiler.
The manufacturer shall not be held responsible for damage to people, animals, or property due to tampering or improper intervention to the
boiler.
When the boiler remained inactive and disconnected from power mains supply for a long period of time, pump unblocking procedure may be
necessary.
The above mentioned procedure involves boiler casing removal in order to access the inside of the boiler and must therefore be implemented
by qualified personnel.
Pump blockage may be prevented by adding to the water in the CH system, specific protective, film-producing products, suitable for multimetal CH systems.
9
2. TECHNICAL CHARACTERISTICS AND DIMENSIONS
2.1. Technical characteristics
The boiler is equipped with an integrated gas atmospheric burner and the following version is available:
- CTN 24 AF: open chamber, natural draught boiler with electronic ignition and instantaneous DHW supply
Boilers are equipped with ionization flame detection device.
The boilers meet applicable requirements of laws enforced in the country of destination and shown in their data plate
Installation in a country other than specified might be source of hazard to people, animals and objects.
The principal technical characteristics of the boilers are listed below:
Construction Characteristics
- Bi-thermal, high performance, copper heat exchanger.
- CH pump with integrated air purging device.
- 6-litre expansion vessel.
- Safety pressure switch, preventing low water pressure operation.
- DHW priority flow switch.
- 10 liter/min DHW flow limiting device.
- Boiler loading and unloading taps.
- DHW and CH temperature probes.
- Safety limit thermostat.
- IPX4D electrically protected control panel.
- Integrated safety and modulation electronic board.
- Electronic ignition and ionization flame detection device.
- Flue gas thermostat.
- Twin shutter, modulating gas valve.
User Interface
- Central heating selector/adjusting knob (35°C/78°C range).
- Boiler shutdown reset/DHW adjusting knob ( 35°C/58°C range).
- System water pressure gauge.
- Light emitting indicators for:
• Power ON;
• CH supply;
• flame detection;
• burner shut-down;
• gas valve alarm;
• burner shut-down due to overheating;
• burner shut-down due to faulty chimney draught;
• insufficient water pressure in the system;
• malfunction of temperature probes.
Functional characteristics
- DHW priority function.
- Electronic flame modulation in CH mode, with timed rising ramp.
- Electronic flame modulation in DHW mode.
- Boiler anti-frost function (ON: 5°C, OFF: 30°C or after 15 minutes operation).
- Timer controlled ambient thermostat (240 seconds with CH flow temperature > 40°C).
- Post-circulation function of pump in CH and anti-frost modes (30 seconds).
- Post-circulation function of pump in DHW (6 seconds in winter mode, 1 second in summer mode).
- Pump anti-blocking function (30 seconds of pump operation each 24 hours of boiler inactivity).
10
2.2 Dimensions
M
C
G
top view
F
R
bottom view
G Gas inlet (1/2”)
M CH flow (3/4”)
C DHW flow (1/2”)
F Cold water inlet (1/2”)
R CH return (3/4”)
Dimensions for connection to base hydraulic kit (option)
Dimensions for connection to “plus” hydraulic kit (option)
Pic. 3 – Dimensions
11
2.3 Hydraulic layout
1. DHW temperature probe
2. Modulating gas valve
3. CH temperature probe
4. Burner nozzles
5. Burner
6. Ignition/flame sensing electrode
7. Safety thermostat
8. Bi-thermal heat exchanger
9. Flue gas hood
10. Flue gas thermostat
11. Expansion vessel
12. Air purging device
13. Pump
14. Water pressure switch
15. 3 bar safety valve
16. Loading tap
17. DHW flow limiting device – 10 liter per minute
18. Domestic cold water flow switch
19. Domestic cold water inlet filter
Pic. 4 – Hydraulic layout
12
M CH flow
C DHW flow
G Gas intake
F Water mains inlet
R CH return
2.4 Operating data
Below indicated burner pressures are to be checked after a three minute boiler operation.
CTN 24 AF
Max. heat
input
Max. heat
output
Min. heat
output
Gas mains inlet
pressure
Diameter of
nozzles
(kW)
(kW)
(kW)
(mbar)
(mm)
Methane Gas
G20
24.5
22.2
10.8
20
1.30
3.2
12.5
Butane Gas G30
24.5
22.2
10.8
29
0.78
6.6
27.5
Propane Gas
G31
24.5
22.2
10.8
37
0.78
8.5
35.5
Type of gas
Burner pressure
min
(mbar)
max
No. 2 chart – Adjustment data
Hot water supply ΔT 45°C = 7,1 l/min
Hot water supply ΔT 40°C = 8,0 l/min
Hot water supply ΔT 35°C = 9,1 l/min
Hot water supply ΔT 30°C = 10,6 l/min*
Hot water supply ΔT 25°C = 12,7 l/min*
*mixed water to the tap
2.5 General characteristics
CTN 24 AF
Equipment category
-
II2H3+
Number of burner nozzles installed
n°
11
Minimum CH flow rate
l/h
550
Minimum CH pressure
bar
0.5
Maximum CH pressure
bar
3
Minimum DHW pressure
bar
0.5
Maximum CH pressure
bar
8
DHW specific capacity (Δt 30 °C)
l/min
10.6
Electric power Supply – Voltage / Frequency
V - Hz
230-50
Power mains supply fuse
A
2
Maximum power consumption
W
61
Pump absorption
W
41
Electric protection rating
IP
X4D
Net weight
Kg
24.9
Methane gas consumption (*)
m3/h
2.59
Butane gas consumption
kg/h
1.93
Propane gas consumption
kg/h
1.90
Maximum CH working temperature
°C
83
Maximum DHW working temperature
°C
58
l
6
l
100
Total capacity of expansion vessel
Maximum recommended CH system capacity (**)
No. 3 chart – General characteristics
(*) Value related to 15°C – 1013 mbar condition
(**) Maximum water temperature of 83°C, vessel preloaded at 1 bar.
CTN 24 AF
Max. heat output
Min. heat output
30% load
Casing heat loss
%
3.57
4.85
-
Flue system heat loss with burner on
%
5.83
8.65
-
Flue system mass capacity (methane gas)
g/s
16.7
16.5
-
Flue temp.– air temp.
°C
85
66
-
CO2 (methane - propane - butane)
%
5.7 / 7.4 / 7.3
2.7 / 3.8 / 3.7
-
Boiler efficiency rating
%
90.6
90.0
90.0
Nox emission class
-
2
No. 4 chart – Combustion data CTN 24 AF model
13
2.6. ERP and Labelling data
Model(s): VELA COMPACT CTN 24 AF
Condensing boiler: no
Low-temperature (**) boiler: no
B1 boiler: yes
Cogeneration space heater: no
If yes, equipped with a supplementary heater: -
Combination heater: yes
Item
Rated heat output
Symbol
Value
Unit
Prated
22
kW
For boiler space heaters and boiler combination heaters:
Useful heat output
Item
Symbol
Value
Seasonal space heating energy
ηS
78
efficiency
For boiler space heaters and boiler combination heaters:
Useful efficiency
Unit
%
At rated heat output and hightemperature regime (*)
P4
22,2
kW
At rated heat output and hightemperature regime (*)
η4
81,6
%
At 30 % of rated heat output and lowtemperature regime (**)
P1
6,6
kW
At 30 % of rated heat output and lowtemperature regime (**)
η1
81,1
%
Auxiliary electricity consumption
Other items
At full load
elmax
0,012
kW
Standby heat loss
Pstby
0,103
kW
At part load
elmin
0,011
kW
Ignition burner power consumption
Pign
0,000
kW
PSB
0,002
kW
Annual energy consumption
QHE
82
GJ
Emissions of nitrogen oxides
NOx
141
mg/kWh
Sound power level, indoors
LWA
52
dbA
Water heating energy efficiency
ηwh
75
%
In standby mode
For combination heaters:
Declared load profile
XL
Daily electricity consumption
Qelec
0,038
kWh
Daily fuel consumption
Qfuel
25,370
kWh
Annual electricity consumption
AEC
8
kWh
Annual fuel consumption
AFC
19
GJ
Contact details: FONDITAL S.p.A. - Via Cerreto, 40 I-25079 VOBARNO (Brescia) Italia - Italy
(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
(**) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return temperature (at heater inlet).
Seasonal space heating energy efficiency class
C
Water heating energy efficiency class
B
No. 5 chart - ERP and Labelling data
14
3. INSTRUCTIONS FOR THE INSTALLER
3.1 Installation standards
The boiler is designed as II2H3+ category and is to be installed in compliance with laws and standards in force in the country of installation.
3.2. Installation
Installation and maintenance procedures are to be implemented employing exclusively accessories and spare parts which are approved and supplied by the manufacturer. Correct boiler operation is not guaranteed when using accessories and spare parts which are not manufacturer approved and supplied.
3.2.1. Packaging
The boiler is shipped in a sturdy cardboard box.
Remove boiler from cardboard box and check its integrity.
The packing materials can be recycled: disposal of must be managed via specific waste collection sites.
Keep packaging out of the reach of children, as it may be source of danger.
The manufacturer shall not be held responsible for damage to people, animals, or property due to failure in following the above mentioned
instructions.
Packaging includes one plastic bag containing:
a) installation, use and maintenance manual;
b) wall mounting template (pic. 5);
d) two screws and wall plugs in order to affix the boiler to the wall.
3.2.2. Choosing where to install the boiler
The following must be taken into account when choosing where to install the boiler:
- the indications given in … “Flue gas discharge system” paragraph;
- check the wall to be adequately well-built avoiding to fit the boiler on fragile walls;
- after the installation, check that 1 cm to the right and 1 cm to the left of the boiler was left for casing removal;
- Do not fit the boiler above any equipment that may prejudice proper operation (steam and grease vapor emitting kitchen appliances, washing
machines, etc.);
- Do not install boilers with a natural draught in rooms with a corrosive or very dusty atmosphere, such as hair salons, laundries, etc., as that may
greatly reduce boiler lifespan.
15
3.2.3. Positioning the Boiler
Each unit is supplied along with a paper template, in the
package, allowing positioning the pipes connecting CH
system, DHW system, gas supply, and air intake/flue gas
discharge ducts to the boiler before installing the boiler
itself.
The template is made of highly resistant paper and is
to be affixed to the wall on which the boiler is to be
mounted using a carpenter’s level. It provides all the
indication required in order to drill the holes for fixing the
boiler to the wall, the boiler is secured to the wall using
two screws and wall plugs.
The lower part of the template shows the areas to be
marked for the couplings positioning of boiler connection to the gas supply pipe, water mains supply pipe,
DHW flow pipe, CH flow and return pipes.
The upper part of the template shows the areas to be
marked for positioning of air intake and flue gas discharge ducts.
IT
ES
FR
PL
PT
RU
NL
1
Tiraggio
naturale
Tiro
natural
Tirage
naturel
iąg
naturalny
Tiragem
natural
Natuurlijke
trek
Schornsteinzug
Natural
draught
Φυσικός
ελκυσμός
Tiraj
natural
Přirozený tah
Kémény
Bacalı
2
Tiraggio
forzato
Tiro
forzado
Tirage
forcé
iąg
wymuszony
Tiragem
forçada
Geforceerde
trek
Raumluftunabhängig
Forced
draught
Αναγκαστικός
ελκυσμός
Tiraj forat
Nucený tah
Ventilátor
Hermetik fanlı
Výstup TPV
HMV
csatlakozás
Sıcak su
çıkı
C
Sortie eau Wyjście ciepłej Saída de
Uscita acqua Salida agua
sani- chaude saniwody
água quente
calda sanitaria caliente
taria
taire
użytkowej
sanitária
F
Ingresso
agua
acqua fredda Entrada
fría
sanitaria
Ritorno
impianto
R riscaldamento
Ingang koud
tapwater
KW
(Einlauf Kaltwasser)
Domestic
cold water
Είσοδος
ψυχρού νερού
Intrare apă
rece
Přívod
studené vody
Hidegvíz
csatlakozás
Soğuk
su giri
Retorno do
sistema de
aquecimento
Terugvoer
verwarmingsinstallatie
RL
(Rücklauf
Heizanlage)
CH return
Επιστροφή
εγκατάστασης
θέρμανσης
Retur
instalaie
încălzire
Vratné
potrubí ÚT
Fűtési
rendszer
visszatérő
csatlakozás
Kalorifer
dönü
Προσαγωγή
instalaie Průtok vody
εγκατάστασης Turîncălzire
θέρμανσης
Fűtési
rendszer
előremenő
csatlakozás
Kalorifer
gidi
Gázcsatalkozás
Gaz
Départ
installation
Zasilanie Ida do sistema
systemu
de
grzewczego aquecimento Entrée gaz
Wejście gazu Entrada de gás
0DIMACAR22
16
Entrada de
água
fria
Powrót
systemu
ogrzewania
Ida
instalación
calefacción
pic. 5 - Installation Template
Έξοδος
apă calθερμού νερού Ieire
dă menajeră
οικιακής
Wejście
wody zimnej
Entrada gas
In the case of proximity with flammable walls
and passages through walls, apply insulating
material between the wall and the flue gas
venting duct.
DHW
Eau froide
sanitaire
Ingresso
gas
DANGER
WW
Uitgang warm (Auslauf
Wartapwater
mwasser)
CZ HU TR
Retour installation
Mandata
impianto
M riscaldamento
G
Retorno
instalación
calefacción
DE GB GR RO
Toevoer
VL
verwarming- (Vorlauf Heisinstallatie
zanlage)
Gasingang
Gas
(Gaseinlass)
Gas inlet
Είσοδος
αερίου
Racord gaz
Přívod plynu
3.2.4. Installing the boiler
Before connecting the boiler to the CH and DHW pipe systems, clean the pipes carefully and eliminate
any metal left during manufacturing and welding process, any oil or grease that may be left and that could damage
the boiler or alter its operation if it reaches the boiler.
Do not use solvents as they could damage components.
Exclusively employ original and manufacturer supplied, air intake/flue gas discharge systems in order to ensure correct boiler operation
The manufacturer shall not be held responsible in case of damage to people, animals, or property due to failure
in following the above mentioned information.
In order to install the boiler, proceed as follows:
- affix the template to the wall;
- check that 1 cm to the right and 1 cm to the left of the boiler is left for casing removal;
- provide two 12 mm Ø holes in the wall for the boiler wall plugs, insert the wall plugs provided with the boiler and place in the screws;
- when necessary provide holes in the wall to allow air intake and/or flue gas discharge pipes to pass through it;
- Position the couplings for connection to the gas supply pipe (G), the cold domestic water supply pipe (F), the domestic cold water flow pipe (C), and the central heating flow (M) and return pipes (R), as shown on the template (lower area);
- Hook the boiler to the previously provided screws;
- Connect the boiler to the feed pipes;
- Connect the boiler to the air intake and flue gas discharge system (refer to paragraph 3.2.5);
- Connect power supply and ambient thermostat (when available).
3.2.5. Air intake and flue gas discharge system
The Manufacturer shall not be held liable for damage resulting in incorrect installation, use, modification of the
equipment or non-observance of instructions provided by the manufacturer or applicable installation standards for
the product.
In terms of the flue discharge into the atmosphere, comply with applicable laws and prescriptions in the country
of installation.
In existing buildings, this natural draught boiler must be connected only to flue pipes shared by several houses to vent the combustion
residues outside the premises inside which boiler is installed.
Boiler takes the air necessary to combustion directly from the installation premises and features a wind-proof flue.
Due to a lower efficiency, any other use of this boiler must be avoided as it would result in a higher energy consumption and higher
operating costs.
The boiler is equipped with a safety device which is oversees flue gas exhaustion.
In case of malfunction of the air intake/flue gas discharge system, the device shuts down the equipment and no. 1
LED turns on (yellow).
It is strictly forbidden to tamper or de-activate the safety device.
Should the boiler repeatedly shut down, it is necessary to have the boiler air intake/flue gas discharge ducts checked, they could be obstructed or incorrectly sized for flue gas exhaust into the atmosphere.
Damage and/or injury caused by incorrect installation and/or incorrect use and/or unauthorized changes to the boiler and/or nonobservance of the manufacturer’s instructions and/or of the relative standards/laws in force in the country of installation, shall release
the manufacturer from any and all liability.
Connecting to the chimney
The chimney is indispensable for correct boiler operation; it must therefore comply with the following requirements:
- it must be made of waterproof material and be resistant to flue gas temperature and related condensate;
- it must have appropriate mechanical characteristics and low thermal conductivity;
- it must be perfectly sealed;
- it must be as vertical as possible and the roof terminal is to have a removable cap for inspection and cleaning;
- the chimney diameter is not to be less wide than the boiler flue gas outlet diameter; squared or rectangular section chimneys must bear an
internal section, 10% larger than the section connected to the boiler anti-wind gust device;
- starting from the boiler, the duct connecting to the chimney is to follow a vertical direction and must be long not less than twice its diameter
before joining the chimney.
17
Direct emission into the atmosphere
Natural draught boilers can discharge flue gas directly into the atmosphere via a duct which goes through the outside walls of the building and
ends with an anti-wind gust device terminal.
The flue gas exhaust duct is to comply with the following requirements:
- its sub-horizontal part inside the building must be as short as possible (not longer than 1,000 mm);
- it is not to have more than 2 direction changes;
- it can host only one single boiler flue gas exhaust system;
- its section, which is passing through the wall is to be protected by a sheath duct; the part of the sheath duct facing the inside of the building is to
be sealed, while the part facing outwards is to be left open;
- its end section, on which the terminal is to installed, is to protrude from the wall of the building for a length of a
least twice the diameter of the duct;
- the terminal is to be positioned no less than 1.5 meters higher than the flue gas exhaust duct from the boiler (see pic. 6).
2
1
0
3
bar
Ø
2Ø
1 m max.
4
5
6
2
1
0
3
bar
4
5
6
Pic. 6 – Connection to the chimney
121
Ø 130,8
200
700
200
400
Pic. 7 – Dimensions for connection to the chimney
18
> 3%
250
>3Ø
1,5 m min.
> 3%
1 m max.
2Ø
1,5 m min.
Ø
2 Ø min.
>3Ø
2 Ø min.
3.2.6 Checking combustion efficiency
In order to check combustion efficiency, turn no. 5 knob fully clockwise and completely open one or two domestic hot water taps so that the
boiler will operate at max. output.
In order to verify combustion efficiency the following measurements must be implemented:
• assess combustion air from the boiler installation room;
• assess flue gas temperature and CO2 from the special sampling port passing through the flue gas venting duct.
If sampling port is not present, it must be provided by the boiler operation and maintenance manager in compliance with the prevailing
regulations and standards.
Sampling port must be equipped with a special sealing and must be correctly closed after each reading.
Perform measurements while the boiler is operating at working temperature.
Once the above procedure is completed, close the domestic hot water taps and position no. 5 knob (pic. 1) to the desired setting.
3.2.7. Gas mains connection
Cross-section of gas supply pipe must be equal or greater than the boiler one. Cross-section size depends on its length, layout pattern, gas flow
rate. It is therefore to be sized accordingly.
Comply with installation standards enforced in the installation country. They are considered as an integral part of this booklet.
Remember that before operate an internal gas distribution system and before connecting it to a meter, it must be checked for leaks.
In order to perform a leak test, operate according to the following indication:
- The leak test is to be carried out before the pipes are covered. The leak test must not be carried out using flammable gas: use air or nitrogen
for this purpose.
- Once gas is in the pipes, leak test by a naked flame is forbidden. Use specific products available on the market.
When connecting a boiler to gas supply network the use of an appropriately sized and made gasket (pic. 8).
The boiler gas inlet thread configuration is not suitable for hemp, plastic tape or similarly made gaskets.
GASKET
Pic. 8 – Gas main connection
19
3.2.8. Plumbing connections
Prior to installing the boiler, the hydraulic system should be cleaned in order to remove impurities; they might be present in system components
and damage the pump or the heat exchanger.
CENTRAL HEATING
CH flow pipe and CH return pipe must be connected to their relevant 3/4” coupling on the boiler (see pic. 5).
When sizing CH system pipes, bear in mind load losses caused by radiators, thermostatic valves, radiator gate valves, and the configuration of
the system itself.
It is advisable to convey the discharge flow of boiler safety valve to the sewer system. Should that not be performed, and the safety valve be activated, flooding of the room in which the boiler is installed may occur.
The manufacturer shall not be held responsible for any damage resulting from failure in observing the above mentioned technical
provision.
DOMESTIC HOT WATER
DHW flow pipe and water mains pipe must be connected to their relevant 1/2” couplings C and F on the boiler (pic. 5).
Hardness of water supplied to the boiler may increase heat exchanger cleaning and /or replacement frequency.
WARNING
Depending on hardness level of the water supplied, it might be necessary installing a suitable water treatment device for domestic use
and in compliance with applicable laws and standards.
Water treatment is always advisable when water supplied to the boiler is more than 20°F hard.
Water supplied by commonly marketed water softeners, due to PH level induced in water, may not be compatible with some components in system.
3.2.9. Power mains connections
The boiler is supplied with a three-poled power cable, already connected to the electronic board and it is provided with an anti-rupture firming
clamp.
The boiler is to be connected to a 230V-50Hz electric power supply.
Comply with phase / neutral polarity sequence when power connecting the boiler.
Installation standards must be complied with and they are considered as an integral part of this booklet.
An easily accessible two-poled switch, with a minimum 3 mm distance between contacts, is to be installed outside of the boiler. The switch is to
allow power supply cut-off in order to safely perform maintenance and service procedures.
Power supply to the boiler must be fitted with a differential magnetic-thermal automatic switch of suitable disconnection capacity.
Electric power supply must be properly earthed.
The above mentioned safety measure must be verified. If in doubt, ask a qualified technician to thoroughly check the power network.
WARNING
The manufacturer shall not be held responsible for any damage due to failure in grounding the system: gas, hydraulic, or CH
system pipes are not suitable for grounding power networks.
3.2.10. Room thermostat connection (optional equipment)
The boiler is designed to be connected to an ambient thermostat (not supplied with the boiler).
Room thermostat contacts must be properly sized in compliance with a load of 5 mA load at 24 Vdc.
Ambient thermostat wiring must be connected to the relevant terminal board (see electric layout), after removing the
jumper supplied as standard with the boiler.
The ambient thermostat wirings are NOT to be grouped together with power mains supply cables.
20
3.3. Loading the system
Once all boiler connections have been completed, CH system can be filled.
The procedure is to be cautiously carried out, following each step:
- open the air purging valves on all radiators and verify the boiler automatic valve operation;
- gradually open the relevant loading tap (pic. 2), checking all automatic air purging valves installed in the system properly work;
- close all radiator air purging valves as soon as water starts coming out;
- check boiler water pressure gauge not to exceed 1 / 1.3 bars reading;
- shut the loading tap and bleed any air out again, by opening the air bleeding valves on radiators;
- start the boiler and bring the system to working temperature, stop the boiler and wait for the pump to stop, then repeat the air bleeding procedures;
- allow the system to cool and restore water pressure to 1 / 1.3 bars.
WARNING
As far as domestic heating systems treatment of water is concerned, in order to optimize performance and safety, to
preserve these conditions over time, to ensure long-lasting regular operation of auxiliary equipment as well, and to minimize
energy consumption, thereby integrating current local laws and standards it is advisable to use specific products that are suitable for
multi-metal plants.
WARNING
The safety low water pressure switch will not give electric consensus to the burner turn on procedure when water pressure is below
0,4/0,6 bar. CH water pressure is not to be less than 0,8/1 bar. Restore proper value as needed, via the loading tap which is provided as
standard with the boiler (pic. 2). The procedure is to be followed while the system is cold. The pressure gauge fitted on the boiler control panel indicates the pressure in the CH system.
3.4. Available head
The boiler is equipped with a high-efficiency circulation pump.
Circulation pump operating speed is set during production and cannot be changed.
700
600
500
400
H
100%
300
200
100
0
fig. 9
0
200
400
600
800
Q
1000
1200
1400
1600
Q Flow rate (l/h)
H Available head (mbar)
21
3.5 Starting the boiler
3.5.1 Preliminary checks
Before starting the boiler it is necessary to perform the following checks:
- flue gas discharge pipe and its terminal are installed in accordance to the instructions: when the boiler is running no products
generated by combustion are to leak from any gasket;
- power supplied to the boiler is 230 V – 50 Hz;
- the system is correctly loaded with water (water pressure gauge reading is 1 / 1,3 bars);
- all system pipes stopcocks are open;
- the gas supplied to the boiler corresponds to that for which the boiler is manufactured: convert the boiler to the available gas when necessary ( see section 3.7. “Adaptation to other gases and burner adjustment”. The procedure is to be carried out by qualified
technical personnel;
- the gas supply stopcock is open;
- there are no gas leaks;
- the main switch external to the boiler is set to on;
- the 3 bar safety valve is not blocked;
- there are no water leaks.
3.5.2. Switching on and switching off
In switching on and switching off the boiler, follow the “Instructions for the user”.
22
3.6. Wiring diagram
SS
FL
TA
SR
F
230Vac
50Hz
17
18
19
20
21
22
M6
M9
26
25
M11
1
2
M1
23
24
M1
M10
1
2
PF1
17
18
19
20
21
22
26
25
28
27
M12 M11
M4
2AF
M16
M15
M9
RLVE1
M8
6
7
7
8
8
P
VG
9
M7
M3
M14
4 5
N
CTFS
GPL
23
24
1 2
CM2
A---B
5
6
M5
M6
M4
M5
P2
CTN
CH4
RLGA1
4
5
M10
M13
3
4
N
10
11
12
13
14
15
16
M2
3
N
RLPO1
P1
M2
CM1
E
DK
P
C
M8
NC
NO
TF
DK
SR
SS
FL
VG
TL
E
P
TA
TF
CM1-CM2
TL
10
11
12
13
14
15
16
Low water pressure switch
NTC CH probe 10 Ohm at 25°C B = 3435
NTC DHW probe 10 Ohm at 25°C B = 3435
Flow sensor
Gas valve
Limit thermostat
Detection/ignition electrode
Circulation pump
Ambient thermostat (option)
Flue gas thermostat
Boiler type and gas type selection jumpers
Pic. 10 – Wiring diagram
23
Relation between temperature (°C) and nominal resistance (Ohm) of CH probe SR and DHW probe SS.
T (°C)
0
2
4
6
8
0
27203
24979
22959
21122
19451
10
17928
16539
15271
14113
13054
20
12084
11196
10382
9634
8948
30
8317
7736
7202
6709
6254
40
5835
5448
5090
4758
4452
50
4168
3904
3660
3433
3222
60
3026
2844
2674
2516
2369
70
2232
2104
1984
1872
1767
80
1670
1578
1492
1412
1336
90
1266
1199
1137
1079
1023
No. 6 chart – “Temperature - Nominal resistance” relation of temperature probes
3.7 Adaptation to other gas types and burner adjustment
The boilers are manufactured for the gas specified upon order.
After sale transformation is to be exclusively implemented by qualified personnel, employing manufacturer designed accessories and following
the procedure and adjustment instructions for an accurate boiler setting-up.
Adapting the boiler from METHANE to LPG
- Remove the main burner;
- remove nozzles from main burner replacing them by new gas type correct diameter ones; WARNING! It is mandatory to install the copper
gaskets;
- re-install the main burner;
- on the electronic board, switch CM1 CH4-GPL jumper to GPL position (pic. 11).
Adapting the boiler from LPG to METHANE
- Remove the main burner;
- remove nozzles from main burner replacing them by new gas type correct diameter ones; WARNING! It is mandatory to install the copper
gaskets;
- re-install the main burner;
- on the electronic board, switch CM1 CH4-GPL jumper to CH4 position (pic. 11).
SS
FL
TA
SR
F
230Vac
50Hz
17
18
19
20
21
22
M6
M9
26
25
M11
1
2
M1
23
24
M1
M10
1
2
PF1
26
25
28
M12 M11
17
18
19
20
21
22
27
M16
M15
M4
2AF
M9
RLVE1
RLGA1
3
4
4
5
5
6
6
7
7
8
8
P
M5
M10
M8
M2
3
N
10
11
12
13
14
15
16
M13
M2
N
RLPO1
P1
23
24
1
M7
M3
M14
VG
4 5
CTFS
GPL
A---B
9
N
CM2
CTN
CH4
2
M6
M4
M5
P2
CM1
E
DK
P
C
M8
NC
NO
Pic. 11 – Methane – LPG selecting jumper
TF
TL
10
11
12
13
14
15
16
A) Maximum heat output adjustment
- Check gas mains supply and burner pressure (see no. 2 chart).
- remove plastic cap A (pic. 12, pic. 13 or pic. 14), positioned on top on the coil of the modulating device, and protecting the screws of the pressure adjusting device;
- connect a manometer to IN check (pic. 12, pic. 13 or pic. 14), in order to verify the entering pressure and to the OUT check (pic. 20, pic. 21 or pic. 22) in order to verify the exiting pressure;
- fully turn clockwise no. 5 knob on the control panel (pic. 1), and open one or two domestic hot water taps for the boiler to operate at max. output;
- turn CLOCKWISE the brass nut B for max. output adjustment (pic. 12, pic. 13 or pic. 14) in order to increase nozzle pressure, and COUNTER-CLOCKWISE in order to decrease nozzle pressure;
- for LPG operation, turn brass nut B fully CLOCKWISE.
24
SIEMENS VGU56
SIT 845
D
A
D
OUT
A
C
B
C
B
OUT
IN
Pic. 12 – Gas valve adjustment - SIEMENS VGU56
Pic. 13 – Gas valve adjustment - SIT 845
IN
SIEMENS VGUS56
A
D
OUT
C
B
IN
Pic. 14 – Gas valve adjustment - SIEMENS VGUS56
B) Minimum heat output adjustment
- Disconnect electric wiring from D modulation coil (pic. 12, pic. 13 or pic. 14);
- turn the burner on and check minimum pressure value according to table no. 2;
- in order to adjust pressure, hold nut B still by means of a 100 mm tool, and turn plastic screw C CLOCKWISE to increase and COUNTERCLOCKWISE to decrease gas pressure;
- re-connect electric wiring to modulation coil.
C) Final settings
- Turn the boiler on and check its correct operation;
- check again for correct minimum and maximum gas valve pressure of gas valve;
- adjust as necessary;
- install protective plastic cap A;
- close gas pressure checks;
- check for gas leaks.
25
4. TESTING THE BOILER
4.1 Preliminary checks
Before testing the boiler, it is recommended to carry out the following checks:
- flue gas evacuation ducts and terminal are implemented according to instruction: when the boiler is running
products generated by combustion are not to leak from gaskets;
- power mains supply to boiler is 230 V – 50 Hz;
- the system is correctly loaded (water pressure on gauge 1 / 1,3 bars);
- all stopcocks in the system piping are open;
- the gas type supplied to the boiler is in compliance with boiler specifications In contrast, modify the boiler for the gas type available (see no.
3.7 section “ADAPTATION TO OTHER GAS TYPES AND BURNER ADJUSTMENT”);
- the gas supply stopcock is open;
- no gas leaks are detected;
- the power switch, external to the boiler, is on;
- the boiler 3 bar safety valve is not blocked;
Should the boiler not be installed in compliance with current laws and standards, notify the system supervisor
and do not test the boiler.
4.2.Switching on and switching off
For boiler starting up and switching off procedure follow the “Instructions for the User”.
26
5. MAINTENANCE
Routine boiler maintenance is to be scheduled according to current laws and regulations.
Appropriate boiler maintenance ensures efficient operation, environment preservation, and safety for people, animals and objects.
All maintenance and repair procedures are to be carried out by qualified personnel.
The manufacturer recommends Customers to contact an Service Centre for all maintenance and repair procedure as they are best trained for the
purpose.
Before implementing any maintenance procedure, involving replacement of components and/or cleaning inside parts of
boiler, disconnect electric power supply.
5.1 Maintenance schedule
Routine maintenance schedule are to include the following:
- check general integrity of the boiler;
- check boiler and network gas supply for leakage;
- check gas supply pressure to boiler;
- check minimum and maximum gas pressures to boiler nozzles;
- check boiler ignition sequence;
- check boiler combustion parameters by way of flue gas analysis;
- check flue gas system for integrity, good state of preservation, and leakage;
- check draught stop device for good state of preservation;
- check absence of flue gas reflux in the room and correct flue gas discharge;
- check operation of safety thermostat installed on the draught stop;
- check integrity of safety devices of the boiler in general;
- check water leaks and oxidized areas on the boiler’s couplings;
- check efficiency of the system safety valve;
- check expansion vessel loading pressure;
- check water pressure switch efficiency.
The following cleaning is to be done:
- cleaning of boiler internal areas;
- cleaning of gas nozzles;
- cleaning of draught stop device;
- cleaning of ventilation grille in the boiler room;
- cleaning of flue gas side of the heat exchanger.
When checking the boiler for the very first time, also verify:
- boiler room suitability;
- air vents in the boiler room;
- diameter and length of flue gas system ducts;
- boiler installation in accordance to this “Installation use and maintenance” manual instructions;
Should the boiler not correctly operate, while not posing danger to people, animals or property, notify the
system supervisor both verbally and in writing.
5.2. Combustion analysis
The combustion parameters of the boiler, which have to be checked in order to determine efficiency and emissions, must be measured in
compliance with applicable legislation and standards.
5.3.
Decommissioning, disassembly and disposal
If you decide to definitively decommission the boiler, have decommissioning, disassembly and disposal procedures carried
out by qualified personnel, only.
The user is not authorised to carry out such operations
Decommissioning, disassembly and disposal operations must be performed with boiler cold and disconnected from gas and power mains.
The materials the boiler is made of can all be recycled.
Once disassembled, boiler must be disposed of in accordance with the national prevailing regulations.
27
6. TROUBLESHOOTING
BOILER STATUS
MALFUNCTION
PROBABLE CAUSE
SOLUTION
Gas supply failure
Check gas pressure
Check gas network stopcock or gas
network safety valve intervention
Gas valve has disconnected
Reconnect it
Gas valve is faulty
Replace it
PCB is faulty
Replace it
Ignition/flame sensing electrode is
faulty
Replace the electrode
PCB does not ignite: it is faulty
Replace PCB
PCB does not detect flame: inverted
phase and neutral
Verify correct neutral and phase connection sequence
Ignition/flame detection electrode
wire is interrupted
Connect flame detection electrode
wire or replace it
Ignition/flame detection electrode is
faulty
Replace electrode
PCB does not detect flame, it is faulty
Replace PCB
Ignition heat input setting is too low
Increase it
Minimum heat input in not set
correctly
Check burner setting
Burner does not ignite
The boiler has shut down, and no. 2
led is on in red.
Turn no. 5 knob to reset position in
order to resume boiler operation.
Burner does not ignite: there is no
spark
Burner ignites for a few seconds and
goes off
Check air intake or flue gas discharge
Air intake or flue gas discharge system
system and vent grilles in the boiler
is weak
room
The boiler has shut down and no. 1 led
is on in yellow.
Flue gas thermostat has shut the
Turn no. 5 knob to reset position in
boiler down
order to resume boiler operation.
The boiler has shut down and no. 1 led
is on in red.
The safety thermostat has shut boiler
The boiler will automatically resume
down
operation after 10 seconds or turning
no. 5 knob to reset position.
No. 1 led is on in red.
The boiler will resume operation as
soon as the malfunction is corrected.
Replace it
CH water does not flow in the system:
pipes might be clogged, thermostatic valves might have shut, system
stopcocks might be closed
Check CH system
Pump is blocked or faulty
Check the pump
Check the pump
CH water flow temperature exceeded
85°C
Water flow in the system is not adequate
Check CH system
No. 1 led is on in yellow.
The boiler will automatically resume
operation as soon as the malfunction
is corrected.
CH system water pressure is low
No. 1 led is flashing yellow and red.
The boiler will automatically resume
operation as soon as the malfunction
is corrected.
CH flow is not working
28
Flue gas thermostat is faulty
The system is leaking
Check CH system
Water pressure switch is disconnected
Reconnect it
Water pressure switch is not operating:
Replace it
it is faulty
CH probe is disconnected
Reconnect it
CH probe is faulty
Replace it
BOILER STATUS
No. 1 led is flashing green and red.
The boiler will automatically resume
operation as soon as the malfunction
is corrected.
MALFUNCTION
PROBABLE CAUSE
DHW probe is disconnected
Reconnect it
DHW probe is faulty
Replace it
DHW probe is not working
System insufficient pressure or flow
rate
Boiler is not supplying DHW
No. 1 led is flashing green.
The boiler will automatically resume
operation as soon as the malfunction
is corrected.
SOLUTION
DHW flow meter is not working
Gas valve modulation coil is not
working
Check DHW system
Check DHW flow meter filter
DHW flow meter sensor is faulty or
disconnected
Replace or reconnect it
DHW flow meter sensor is blocked
Replace it
PCB and gas valve link is disconnected
Check connection to the gas valve
or faulty
Gas valve modulation coil is faulty
Replace gas valve modulation coil
29
7. 30
MANUFACTURER’S DECLARATION OF CONFORMITY
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31
Uff. Pubblicità Fondital IST 04 C 399 - 01 Luglio 2015 (07/2015)
0LIBMEEN02
Fondital S.p.A.
Via Cerreto, 40
25079 VOBARNO (Brescia) Italy
Tel. +39 0365 878.31
Fax. +39 0365 878.304
e mail: [email protected]
www.novaflorida.com
The manufacturer reserves the right to implement any necessary and/or useful
variation to products, without modifying fundamental characteristics.