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VISION PLUS
High efficiency combi boiler
Users Instructions
Installation &
Servicing
Instructions
VISION PLUS 25 C G.C
. N° 47-364-52
VISION PLUS
30 C G.C. N° 47-364-53
THESE INSTRUCTIONS
TO BE RETAINED
BY USER
Vokèra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK.
1a
THINGS YOU SHOULD KNOW
1.1A GAS APPLIANCES
1.2A ELECTRICAL SUPPLY
1.3A WARRANTY REGISTRATION
1.4A APPLIANCE COMMISSIONING CHECKLIST (UK ONLY)
1.5A HOW DOES IT WORK?
1.6A DIMENSIONS 3
1.7A CLEARANCES REQUIRED
1.8A FROST PROTECTION SYSTEM
1.9A CONTROL PANEL
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2a GETTING STARTED
2.1A PARAMETERS ACCESS
2.2A PROGRAMMING THE BOILER
2.3A OPERATING MODE
2.4A OTBus REMOTE CONTROL CONNECTION
2.5A BOILER FAULT CODES
2.6A INFO MENU
3a HOW TO...
3.1A HOW TO TOP-UP THE SYSTEM PRESSURE
3.2A HOW TO RESET THE APPLIANCE 9
3.3A HOW TO SHUT DOWN THE SYSTEM FOR SHORT PERIODS 9
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3.4A HOW TO SHUT DOWN THE SYSTEM FOR LONG PERIODS 9
3.5A HOW TO CARE FOR THE APPLIANCE
3.6A KEYBOARD LOCKOUT FUNCTION
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4a WHAT IF...
4.1A WHAT IF I SUSPECT A GAS LEAK
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4.2A WHAT IF I HAVE FREQUENTLY TO TOP-UP THE SYSTEM 10
4.3A WHAT IF THE APPLIANCE IS DUE ITS ANNUAL SERVICE 10
4.4A WHAT IF I NEED TO CALL AN ENGINEER
3.7A INTERFACE STAND BY
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1 INTRODUCTION
2 DESIGN PRINCIPLES AND OPERATING SEQUENCE
2.1 PRINCIPLE COMPONENTS
2.2 MODE OF OPERATION (AT REST)
2.3 MODE OF OPERATION (HEATING)
2.4 MODE OF OPERATION (HOT WATER)
2.5 SAFETY DEVICES
2.6 TECHNICAL DATA
2.7 VARIABLE SPEED CIRCULATOR
2.8 HOW TO FREE THE PUMP
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3 GENERAL REQUIREMENTS (UK)
3.1 RELATED DOCUMENTS
3.2 LOCATION OF APPLIANCE
3.3 GAS SUPPLY
3.4 FLUE SYSTEM
3.5 AIR SUPPLY
3.6 WATER CIRCULATION
3.7 ELECTRICAL SUPPLY
3.8 MOUNTING ON A COMBUSTIBLE SURFACE
3.9 TIMBER FRAMED BUILDINGS
3.10 WATER TREATMENT
3.11 SHOWERS
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3E GENERAL REQUIREMENTS (EIRE)
3.1E RELATED DOCUMENTS
3.2E LOCATION OF APPLIANCE
3.3E GAS SUPPLY
3.4E FLUE SYSTEM
3.5E AIR SUPPLY
3.6E WATER CIRCULATION
3.7E ELECTRICAL SUPPLY
3.8E MOUNTING ON A COMBUSTIBLE SURFACE
3.9E TIMBER FRAMED BUILDINGS
3.10E WATER TREATMENT
3.11E SHOWERS
3.12E DECLARATION OF CONFORMITY
4 INSTALLATION
4.1 PREPARATION FOR MOUNTING THE APPLIANCE
4.2 FITTING THE FLUE
4.3 CONNECTING THE GAS AND WATER (FIG. 22)
4.4 ELECTRICAL CONNECTIONS
4.5 CASING REMOVAL
4.6 APPLIANCE TERMINAL BLOCK
4.7 CONNECTING THE MAINS (230V) INPUT
5 OPERATION
5.1 ACCESS TO THE PARAMETERS
5.2 CONTROL PANEL
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5.3 SETTINGS MENU TREE STRUCTURE
5.4 STARTING THE BOILER
5.5 BOILER CONFIGURATION
5.6 FIRST COMMISSIONING
5.7 VENT CYCLE
5.8 OPERATING STATUS
6 COMMISSIONING
6.1 GAS SUPPLY INSTALLATION
6.2 THE HEATING SYSTEM
6.3 HOW TO FILL THE CONDENSATE TRAP
6.4 INITIAL FILLING OF THE SYSTEM
6.5 INITIAL FLUSHING OF THE SYSTEM
6.6 PRE-OPERATION CHECKS
6.7 INITIAL LIGHTING
6.8 CHECKING GAS PRESSURE AND COMBUSTION ANALYSIS 31
6.9 FINAL FLUSHING OF THE HEATING SYSTEM
6.10 SETTING THE FLOW OUTLET TEMPERATURE
6.11 SETTING THE SYSTEM DESIGN PRESSURE
6.12 REGULATING THE CENTRAL HEATING SYSTEM
6.13 FINAL CHECKS
6.14 INSTRUCTING THE USER
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7 SERVICING INSTRUCTIONS
7.1 GENERAL
7.2 ROUTINE ANNUAL SERVICING
7.3 REPLACEMENT OF COMPONENTS
7.4 COMPONENT REMOVAL PROCEDURE
7.5 FRONT COVER REMOVAL
7.6 PUMP ASSEMBLY
7.7 SAFETY VALVE
(FIG. 27)
(FIG. 28)
7.8 LOWER AUTOMATIC AIR RELEASE VALVE
7.9 WATER PRESSURE TRANSDUCER
7.10 FLOW THERMISTOR
7.11 RETURN THERMISTOR
7.12 PRINTED CIRCUIT BOARD
7.13 GAS VALVE
7.14 ELECTRODES
7.15 FLUE FAN & MIXER
7.16 BURNER
(FIG. 29)
(FIG. 34)
7.17 MAIN HEAT EXCHANGER (FIG. 35)
7.18 AUTOMATIC BY-PASS & DHW NON-RETURN
7.19 EXPANSION VESSEL REMOVAL
7.20 CONDENSE TRAP REMOVAL
7.21 FLUE COLLECTOR REMOVAL
7.22 REPLACING INTERFACE
7.23 REPLACING PCB OR INTERFACE
(FIG. 28)
(FIG. 30)
(FIG. 4 - POS. 21)
(FIG. 4 - POS. 23)
(FIG. 31)
(FIG. 32)
(FIG. 33 - FIG. 34)
(FIG. 34 - FIG. 35)
(FIG. 37)
(FIG. 38)
(FIG. 39)
34
34
35
(FIG. 36) 35
33
33
34
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35
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36
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36
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8.1
8.2
CHECKS, ADJUSTMENTS AND FAULT FINDING
CHECKING APPLIANCE OPERATION
APPLIANCE MODES OF OPERATION
8.3 CHECKING THE CO
37
37
2
37
AND ADJUSTING THE GAS VALVE 37
8.4 CHECKING THE EXPANSION VESSEL
8.5 EXTERNAL FAULTS
8.6 ELECTRICAL CHECKS
8.7 FAULT FINDING
8.8 COMPONENT VALUES & CHARACTERISTICS
8.9 ADJUSTMENTS
8.10 GAS VALVE CALIBRATION
8.11 RANGE RATED
8.12 SETTING THE THERMOREGULATION
8.13 LIGHTS AND FAULTS
8.14 BOILER FAULT CODES
8.15 INFO MENU
8.16 EMBEDDED CLOCK
8.17 CLOCK FUNCTIONALITY
8.18 PROGRAMMING THE EMBEDDED CLOCK
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9 WIRING DIAGRAMS
9.1 EXTERNAL WIRING
9.2 OTHER DEVICES
9.3 OTBUS CONNECTION
10 LPG INSTRUCTIONS
10.1 RELATED DOCUMENTS
10.2 TECHNICAL DATA
10.3 GAS CONVERSION
10.4 COMPLETION
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USERS INSTRUCTIONS
INTRODUCTION
Dear Customer
Your Vokèra VISION PLUS boiler has been designed to meet and exceed the very latest standards in gas central heating technology, and if cared for, will give years of reliable use and efficiency.
Please therefore take some time to read these instructions carefully.
Do’s and Don’t’s
- Do ensure that the system pressure is periodically checked
- Do ensure that the boiler should not be used by children or unassisted disabled people
- Do ensure that you know how to isolate the appliance in an emergency
- Do ensure that you are familiar with the appliance controls
- Do ensure that your installer has completed the appliance log book section
- Do not attempt to remove the appliance casing or gain internal access
- Do not hang clothes etc. over the appliance
- Do not forget to have the appliance serviced annually.
This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the person responsible for the property in which the appliance is located/installed. A replacement copy can be obtained from the Vokera website.
At the end of its life, the product should be not be disposed of as solid urban waste, but rather it should be handed over to a differentiated waste collection centre.
1A THINGS YOU SHOULD KNOW
1.1A GAS APPLIANCES
Gas Safety (Installation and Use) Regulation (UK).
In the interests of your safety and that of others it is a legal requirement that all gas appliances are installed and correctly maintained by a competent person and in accordance with the latest regulations.
1.2A ELECTRICAL SUPPLY
Please ensure that this appliance has been properly connected to the electrical supply by means of a double pole isolator or un-switched socket, and that the correct size of fuse (3 AMP) has been fitted.
Warning: this appliance must be earthed!
1.3A WARRANTY REGISTRATION
The appliance warranty can be registered online or by contacting our warranty registration helpline using the contact number displayed on the registration label on the front of your appliance.
1.4A APPLIANCE COMMISSIONING CHECKLIST
(UK ONLY)
A checklist section can be found at the rear of the appliance installation booklet. This important document must be completed during the installation/commissioning of your boiler. All
GAS SAFE registered installers carry a GAS SAFE ID card, and have a registration number. These details should be recorded in the Benchmark commissioning checklist section within the installation booklet. You can check your installers details by calling GAS SAFE direct on 08004085500. Failure to install and commission the appliance in accordance with the manufacturers instructions will invalidate the warranty.
This does not affect your statutory rights.
1.5A HOW DOES IT WORK?
Your VISION PLUS boiler supplies heated water to your radiators and hot water to your hot water taps. The central heating is controlled via a time clock and any thermostats that your installer may have fitted. The boiler will light when it receives a request from the time clock via any thermostat that may be installed, or whenever a hot water outlet (tap) is opened. Your VISION
PLUS boiler lights electronically and does not have a pilot light.
In the unlikely event of a fault developing with your boiler, the supply of gas to the burner will be terminated automatically.
1.6A DIMENSIONS
VISION PLUS 25C - 30C
HEIGHT
WIDTH
DEPTH
715 mm
405 mm
248mm
1.7A CLEARANCES REQUIRED
ABOVE
BELOW
LEFT SIDE
RIGHT SIDE
FRONT
150 mm
150 mm
12 mm
12 mm
600 mm
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1.8A FROST PROTECTION SYSTEM
The VISION PLUS is equipped with a built-in frost protection system, this enables the boiler to over-ride the time controls
– even if switched off – and operate the burner and/or pump, should the temperature drop below 5 0 C for the main and for the
DHW line. In particular the burner will be in ON status until the main temperature reaches 35°C for CH appliance and 55°C for
DHW appliance.
Please note that the frost protection system is designed to protect the appliance only, should frost protection be required for the heating system, additional controls may be required.
NOTE
The frost protection system is reliant on the appliance having a permanent electrical supply, and being in a non-fault condition.
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1.9A CONTROL PANEL
Your boiler is equipped with a large LCD display that indicates the appliance operating status.
BB
Fig. 1
A
B
A+B
C
D
A+C
+
RESET MENU
+
It is normally used to raise the domestic hot water temperature, when the arrow is highlighted it has the confirm function
It is normally used to lower the domestic hot water temperature, when the arrow is highlighted it has the back/cancel function
Access to the domestic hot water comfort functions (see paragraph “2.3.9a DOMESTIC HOT
WATER COMFORT FUNCTION”)
It is normally used to raise the heating water temperature, when the arrow is highlighted you can move inside the P1 menu
It is normally used to lower the heating water temperature, when the arrow is highlighted you can move inside the P1 menu
Access to the menu for setting the clock (see paragraph “2.2a PROGRAMMING THE BOILER”)
1 Used to change the operating status of the boiler
(OFF, SUMMER and WINTER)
2
3
Used to reset the alarm status or to interrupt the vent cycle
Used to access the INFO and P1 menus. When the icon Enter is shown on the display, the key has the ENTER function and is used to confirm the value set during the programming of a technical parameter
1+3
Lock and unlock keys
2+3 When the boiler is set to OFF it is used to start the combustion analysis function (CO)
Indicates the connection to a remote device (OT or RS485)
Indicates the connection to a WIFI device
Reset
Enter
Indicates the presence of an outdoor temperature sensor
Indicates the activation of special domestic hot water functions or the presence of a system for managing the solar thermal array
Indicates the connection to a heat pump (not used on this model)
Displayed when a fault occurs and/or when there is an alarm
Fault and/or service indicator
Indicates the presence of a flame, in the event of a flame lockout the icon looks like
It comes on when there are alarms that require a manual reset by the user
It comes on when there is an operation confirma tion request
When the icon is active, it indicates that the
"confirm” function of button A is active
When the icon is active, it indicates that the
"back/cancel” function of button B is active
When the icon is active, it is possible to navigate the menu or raise the value of the selected parameter
When the icon is active, it is possible to navigate the menu or lower the value of the selected parameter
The icon comes on if central heating is active, it blinks if a heating request is in progress
The icon comes on if domestic hot water is active, it blinks if a domestic hot water request is in progress
They indicate the set point level set (1 bar minimum value, 4 bars maximum value)
1 2 3 4 5 6 7 Indicates the days of the week
AUTO
ON
Only if clock is enabled
MAN ON Only if clock is enabled
MAN OFF Only if clock is enabled
The user interface has the function of a machine interface, displaying the system settings and providing access to the parameters.
The display normally shows the temperature of the flow sensor unless there is a domestic hot water request in progress, then the domestic hot water probe temperature is displayed; if no key is touched within 10 sec the current time is displayed (backlight unlit).
The configuration MENU is organised with a multi-level tree structure. An access level has been fixed for each sub-menu: USER level always available; TECHNICAL level password protected.
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2A GETTING STARTED
2.1A PARAMETERS ACCESS
Pressing the MENU key for at least 2 sec provides access to the P1 menu, allowing the parameters to be programmed.
If the case the menu is empty, P8.04 is displayed, otherwise the first item in the menu appears.
2.2A PROGRAMMING THE BOILER
Ensure the gas and electrical supplies to the appliance are switched on.
With power on the backlight comes on, then all the icons and the segments come on for 1sec and in sequence the firmware revision is displayed for 3sec:
IMPORTANT
The parameters dedicated to the user are the following:
Menu Parameters
P1
P1.01
Scrolling message only if parameter
P1.05 = 1
SETTINGS
LANGUAGES
0 IT
1 RO
2 FR
3 EN
4 SR
5 HR
6 ES
7 EL
8 BG
9 PL
10 SL
P1.02
P1.03
P1.05
TIME
TIME PROGRAM
SCROLLING
USER
USER
Only if clock is enabled - see 8.16
0 / 1 USER
P1 (SETTINGS menu)
P1.01
Select the parameter to set the desired language (see above table).
P1.02
From this menu the time and the number of the day of the week can be adjusted.
P1.03
Available only if embedded clock has been enabled.
P1.05
This parameter allows you to enable scrolling text after the parameter code itself:
0= OFF
1= ON
Then the interface displays the status active at that moment.
If necessary, the interface automatically goes to the clock menu. On the main screen the icons , , and and
ENTER come on while 00:00 is displayed with the first two digits blinking with a frequency of 0.5 sec ON, 0.5 sec OFF.
To set the time and day proceed as follows:
set the hour with the and arrows, then confirm with
A
set the minutes with the and arrows, then confirm with A
set the day of the week with the and arrows. The segment of the day selected blinks, press MENU at the icon Enter per to confirm the time and day setting. The clock blinks for 4sec and then returns to the main screen
to exit the time programming without saving the modified values, just press .
NOTE: It is possible to change the TIME and DAY settings also later by accessing the P1.02 parameter in the P1 menu, or by pressing the A+C keys for at least 2sec.
A
+
RESET MENU
+
C
If you need to set the language , select the menu P1 and confirm your choice using .
Use the arrows to display parameter P1.01, then enter the submenu by pressing .
Use the and buttons to set the desired language
– see “ 2.1a PARAMETERS ACCESS” . To confirm your choice, press Enter .
5
Vent cycle
Whenever the electrical supply to the appliance has been disrupted (OFF) and then restored (ON), it will enter a 4-min vent cycle.
b
When the air purging cycle is in progress, all heat requests are inhibited except those for domestic hot water when the boiler is not set to OFF and -AIR is displayed on the interface screen.
In this status the boiler activates the traditional function of just domestic hot water, the interface normally displays the delivery temperature. In the event of a domestic hot water pick up, the display shows the temperature of the domestic hot water.
Domestic hot water REQUEST, t he tap icon blinks:
The display shows the message -AIR lighting up the icon
RESET. DAY
2.3.3A OFF
Set the boiler to the OFF status by pressing key 1 until the central segments are displayed.
The purge cycle can be interrupted early by keeping key 2
(the icon RESET comes on). The purge cycle can also be interrupted, if the boiler is not set to OFF, by a domestic hot water request.
Adjust the ambient temperature thermostat to the desired temperature (~20°C) or, if the system is equipped with a programmable thermostat or timer, ensure that the thermostat or timer is “active” and set correctly (~20°C)
Then set the boiler on WINTER or SUMMER depending on the type of operation desired.
The boiler will start up and continue working until the set temperatures are reached, after which it will then go back to standby.
2.3A OPERATING MODE
For changing the operating status from WINTER to SUMMER to OFF press key 1 until the icon for the desired function is displayed.
2.3.1A WINTER MODE
Set the boiler to the WINTER status by pressing key 1 until both the domestic hot water icon and the heating icon are displayed.
2.3.4A ADJUSTING THE HEATING WATER
TEMPERATURE WITHOUT AN OUTDOOR
TEMPERATURE SENSOR CONNECTED
If there is no outdoor temperature sensor the boiler operates at a fixed point, the HEATING setpoint in this case can be set on the main page of the screen.
The successive pressing of the key C or D on the main screen displays the current value of the heating setpoint; the value blinks with a frequency of 0.5 sec ON, 0.5 sec OFF and the icons and come on.
+ +
C
D
RESET MENU
The interface normally displays the delivery temperature unless there is a domestic hot water request in progress, in which case the domestic hot water temperature is displayed.
When there is a heat request and the burner is lit, the icon
appears on the display.
Heating REQUEST, the radiator icon blinks:
The successive pressing of the key C or D allows you to set the value of the heating setpoint within the preset range:
[40°C - 80.5°C] for high temperature systems
[20°C - 45 °C] for low temperature systems with steps of 0.5°C. The level bars beside the heating icon show the setpoint value set with respect to the operating range:
- four bars on = max setpoint
- one bar on = min setpoint
Bar
2.3.2A SUMMER MODE
Set the boiler to the SUMMER status by pressing key 1 until the domestic hot water icon is displayed.
Keeping one of the two keys C or D pressed for longer, the meter increases the speed of advancement modifying the set value. If no key is pressed for 5sec, the value set is taken as the new heating setpoint and the display returns to the main page.
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2.3.5A ADJUSTING THE HEATING WATER
TEMPERATURE WITH AN OUTDOOR
TEMPERATURE SENSOR CONNECTED
If an outdoor temperature sensor is installed and thermoregulation is enabled (parameter P4.18=1), the delivery temperature is automatically selected by the system, which quickly adjusts the ambient temperature according to the variations in the outdoor temperature.
If you want to change the temperature, raising it or lowering it with respect to that automatically calculated by the electronic board, it is possible to change the HEATING setpoint selecting the desired comfort level within the range (-5 - +5).
2.3.8A RESET FUNCTION
The “RESET” icon comes on when there is an alarm that requires a manual reset by the user (for example flame lockout). To reset the lockout press key 2 RESET.
DAY
RESET
If the reset attempts do not restart the boiler, contact you engineer or Vokera Ltd. for help or advice.
2.3.9A DOMESTIC HOT WATER COMFORT FUNCTION
Pressing the keys A+B for at least 2sec gives you access to the domestic hot water comfort functions. COFF is shown on the display and the icons , , and come on:
Note: if an outdoor temperature sensor is connected it is in any event possible to have the boiler operate at a fixed point by setting the parameter P4.18 = 0 (menu P4).
2.3.6A ADJUSTING THE DOMESTIC HOT WATER
TEMPERATURE
On the main screen, pressing the key the current domestic hot water setpoint, the value blinks with a frequency of 0.5 sec ON, 0.5 sec OFF and the icons
come on.
A
B
+
A
RESET MENU
rather than
+
B displays
and
The successive pressing of the keys A or B allows you to set the value of the domestic hot water setpoint raising or lowering the value within the preset range in steps of 0.5°C. The level bars beside the heating icon show the setpoint value set with respect to the operating range:
- four bars on = max setpoint
- one bar on = min setpoint
Using the keys , you can scroll through the options in sequence CSTD and then COFF again. Using the key activates the desired function and you exit the menu returning to the initial screen. A scrolling message appears on the display with the following mode:
Function
CSTD
COFF
Scrolling message
COMFORT STANDARD
COMFORT OFF
CSTD (PREHEATING function)
By setting CSTD, the domestic hot water preheating function of the boiler activates. This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made. When the preheating function is enabled the scrolling message PREHEATING FUNCTION
IN PROGRESS is displayed. To deactivate the preheating function set COFF. The function is not active when the boiler is OFF.
2.4A OTBus REMOTE CONTROL
CONNECTION
When an OTBus remote control is connected to the system, the boiler display shows the following screen:
2.3.7A SAFETY STOP
If there are ignition faults or boiler operation malfunctions, carry out a “SAFETY STOP”. On the display, in addition to the fault code, the icon is also displayed, which blinks with a frequency of 0.5sec ON and 0.5sec OFF.
The backlight blinks for 1min after which it switches off, while the icon continues blinking.
On the 4 digits a message scrolls containing the error code and its description.
DAY
In particular on the boiler display:
it is no longer possible to set the boiler OFF/WINTER/
SUMMER status (it is set by the OTBus remote control)
it is no longer possible to set the domestic hot water setpoint (it is set by the OTBus remote control)
the combination of the A+B keys remains active for the setting of the DOMESTIC HOT WATER COMFORT function
the domestic hot water setpoint is displayed in the INFO menu.
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E091
E099
<0,6 bar
>3,0 bar
COM
COMP
COM1
FWER
OBCD
OTER
2.5A BOILER FAULT CODES
ERROR
CODE
E010
E011
E020
E030
E040
E041
FAULT flame lockout/ condensate discharge blockage fumes discharge alarm/air intake obstructed extraneous flame limit thermostat fan fault pressure transducer – load system water transducer – load system
E042
E060
E070
E077
E080
E084
E086
E090 water transducer fault domestic hot water probe fault flow sensor fault flow sensor overtemperature flow/return sensor differential alarm water thermostat main zone or zone 1 (when enabled) return line probe fault return line probe overtemperature outlet/return line probe differential alarm delivery line probe fault - zone 1 delivery line probe fault - main zone flue gas probe fault flue gas probe overtemperature clean primary heat exchanger reset attempts exhausted, boiler blocked
Low water pressure check the HTG system
High water pressure check the HTG system lost communication with boiler board lost communication with main zone lost communication with zone 1
FW version not compatible damaged clock
OTBus configuration fault
For reset faults, except for E40-E041, call engineer.
DESCRIPTION OF ALARM
TYPE definitive transitional definitive definitive definitive transitional definitive transitional transitional definitive definitive transitional transitional definitive definitive transitional transitional transitional definitive transitional definitive, not resettable transitional transitional transitional definitive signalisation
2.6A INFO MENU
Pressing key 3 on the display screen displays a list of information regarding the operation of the boiler listed by parameter name and value. Passing from the display of one parameter to the next takes place by pressing respectively the keys and
. Pressing the key allows the selected parameter to be displayed; pressing the key returns you to the main screen:
I0.12
I0.13
I0.14
I0.15
I0.16
I0.17
I0.18
I0.30
I0.31
I0.33
I0.34
I0.35
8
Parameter name
I0.01
I0.02
I0.03
I0.04
I0.08
I0.09
I0.10
I0.11
Scrolling message only if parameter P1.05 = 1 Description
SCREED HEATING HOURS
CH PROBE
Number of hours passed with screed heater function
Boiler delivery sensor value
RETURN PROBE
DHW PROBE
EXHAUST PROBE
OUTDOOR TEMP PROBE
FILTERED OUTDOOR TEMP
DHW FLOW RATE
DHW SETPOINT
FAN SPEED
MAIN ZONE OUTLET
ZONE 1 OUTLET
EXHAUST PROBE HOURS
MAIN ZONE SET
ZONE 1 SET
WATER PRESSURE
COMFORT
SUN ON
PCB ID
PCB FW
INTERFACE FW
Boiler return sensor value
Domestic hot water probe value
Flue gas probe value
Outdoor temperature sensor instantaneous value
Outdoor temperature fi ltered value used in the thermoregulation algorithm for calculating the heating setpoint
For instantaneous boiler with fl owmeter
Only in case of OTBus connection
Number of turns of the fan (rpm)
Main zone fl ow sensor value (when P4.12 = 1)
Zone 1 fl ow sensor value (when P4.13 = 1)
Number of hours the heat exchanger has been operating in “condensing mode”
Main zone delivery setpoint
Zone 1 delivery setpoint (when P4.23 = 1)
System pressure
Domestic hot water comfort (COFF, CSTD)
Special functions active for high domestic hot water temperature inputs
Electronic board card identifi cation
Electronic board card fmw revision
Interface fmw
3A HOW TO...
3.1A HOW TO TOP-UP THE SYSTEM
PRESSURE
The system pressure must be checked periodically to ensure the correct operation of the boiler. Scroll the INFO menu to
10.18, the displayed pressure should be reading between 1 and
1.5 BAR when the boiler is in an off position and has cooled to room temperature. If the pressure requires ‘topping-up’ use the following instructions as a guide.
- Locate the filling valve connections (usually beneath the boiler, see Fig. 2).
- Attach the filling loop to both connections.
- Open the filling valve slowly until you hear water entering the system.
- Close the filling valve when the pressure is between 1 and
1.5 bar.
- Remove the filling loop from the connections.
Fig. 2
While the electrical supply and the fuel supply remain active, the boiler is protected by the systems:
- heating anti-freeze: this function is activated if the temperature measured by the flow sensor drops below 5°C. A heat request is generated in this phase with the ignition of the burner at minimum output, which is maintained until the outlet water temperature reaches 35° C;
- domestic hot water anti-freeze: this function is activated if the temperature measured by the domestic hot water probe drops below 5°C. A heat request is generated in this phase with the ignition of the burner at minimum output, which is maintained until the outlet water temperature reaches 55° C.
b
The operation of the ANTI-FREEZE function is indicated by a scrolling message on the interface display: AF1
(DHW antifreeze in progress) - AF2 (CH antifreeze in progress), as the case may be.
- circulator anti-locking: the circulator activates every 24 hours of stoppage for 30 seconds.
control valve control valve double check- valve flow pipe temporary connection supply pipe
If the house is to be left unoccupied for any length of time – especially during the winter – the system should be thoroughly drained of all water. The gas, water, and electricity supply to the house should also be turned off. For more detailed advice contact your installer.
3.2A HOW TO RESET THE APPLIANCE
When the fault code is displayed, the appliance will require to be reset manually. Before resetting the boiler, check what action is required to be taken, using the information on the fault code table.
RESET FUNCTION
Press the RESET button. At this point, if the correct operating conditions have been restored, the boiler will restart automatically. There are a maximum of 3 consecutive attempts.
In case of all the attempts are exhausted the definitive fault
E099 occurs on the display. To restore from an ‘E099’ fault code, it is necessary to momentarily switch off the electrical supply to the appliance and then restore the electrical supply to the appliance.
3.5A HOW TO CARE FOR THE APPLIANCE
To clean the outer casing use only a clean damp cloth. Do not use any scourers or abrasive cleaners.
3.6A KEYBOARD LOCKOUT FUNCTION
Pressing buttons 1+3 for at least 2sec activates the key lockout; pressing buttons 1+3 again for at least 2sec reactivates the key. The display will show LOCK.
+ +
1
RESET MENU
3
DAY DAY
IMPORTANT
If the appliance requires to be reset frequently, it may be indicative of a fault, please contact your installer or Vokèra Customer
Services for further advice.
The system and boiler can be shut down, in the event of temporary absences (weekends, short breaks, etc.) setting the boiler status to OFF .
Button ‘2’ (reset) remains active if there is a fault to allow the alarm to be reset.
9
3.7A INTERFACE STAND BY
Usually, when there are no faults or heat requests, the display always shows the temperature measured by the flow sensor.
If within 10 seconds there is no heat request without any key being pressed the interface goes into stand by. The display shows the current time, the two points separating the time from the minutes blink with a frequency of 0.5sec ON and
0.5sec OFF, while the status icons will be active if necessary:
In the case of stand by press any button to return to normal operating conditions.
4A WHAT IF...
4.1A WHAT IF I SUSPECT A GAS LEAK
If you suspect a gas leak, turn off the gas supply at the gas meter and contact your installer or local gas supplier. If you require further advice please contact your nearest Vokèra office.
4.2A WHAT IF I HAVE FREQUENTLY TO TOP-
UP THE SYSTEM
If the system regularly requires topping-up, it may be indicative of a leak. Please contact your installer and ask him to inspect the system.
Advice for tenants only
Your landlord should arrange for servicing.
Advice for homeowners
Please contact Vokèra Customer Service (0844 3910999 (UK) or 056 7755057 (ROI) if you would prefer a Vokèra service engineer or agent to service your appliance. Alternatively your local GAS SAFE registered engineer may be able to service the appliance for you.
4.4A WHAT IF I NEED TO CALL AN ENGINEER
If you think your boiler may have developed a fault, please contact your installer or Vokèra Customer Services (0844 3910999 (UK) or 056 7755057 (ROI) have all your details to hand including full address and postcode, relevant contact numbers, and your completed appliance log book.
10
INSTALLATION AND SERVICING INSTRUCTIONS
1 INTRODUCTION
All installers are asked to follow the Benchmark Scheme by adhering to the Code of Practise, which can be obtained from www.centralheating.co.uk.
The VISION PLUS is comprised of a 7-model range of high efficiency appliances, with outputs ranging from 20kW to 40kW.
These appliances – by design – incorporate electronic ignition, circulating pump, expansion vessel, safety valve, pressure transducer and automatic by-pass.
The VISION PLUS range is produced as room sealed, category
II2H3P appliances, suitable for internal wall mounting applications only. Each appliance is provided with a fan powered flue outlet with an annular co-axial combustion air intake that can be rotated – horizontally – through 360 degrees for various horizontal or vertical applications.
The VISION PLUS is approved for use with C13 & C33 type flue applications.
These appliances are designed for use with a sealed system only; consequently they are not intended for use on open vented systems.
This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the person responsible for the property in which the appliance is located/ installed. A replacement copy can be obtained from Vokèra customer services.
VISION PLUS boiler complies with basic requirements of the following Directives:
- Regulation (EU) 2016/426;
- Yield directive: Article 7(2) and Annex III of directive 92/42/
EEC;
- Electromagnetic compatibility directive 2014/30/EU;
- Low-voltage directive 2014/35/EU;
- Directive 2009/125/EC Ecodesign for energy-using appliances;
- Regulation (EU) No. 2017/1369 Energy Labelling;
- Delegated Regulation (EU) No. 811/2013;
- Delegated Regulation (EU) No. 813/2013;
- Delegated Regulation (EU) No. 814/2013.
At the end of its life, the product should be not be disposed of as solid urban waste, but rather it should be handed over to a differentiated waste collection centre.
Fig. 4
F O G I R
General layout
1 Domestic hot water heat exchanger
2 Drain valve
3 Condense trap
4 Safety valve
5 Pressure transducer
6 Gas valve
7 Gas injector
8 Main heat exchanger
9 Burner
10 Flues thermistor (NTC)
11 Fan assembly with mixer
12 Silencer
13 Flue gas analysis test point
14 Flue outlet & air intake
15 Atmospheric tube
16 Ignition transformer
17 Top AAV+De-aerator
18 Spark Electrode
19 Sensing Electrode
20 High limit thermostat
21 Flow thermistor (NTC)
22 Expansion vessel
23 Return thermistor (NTC)
24 Bottom auto air vent (AAV)
25 Pump
26 DHW flow switch
27 Three port valve actuator
R Heating return connection
F Heating flow connection
G Gas connection
O Hot water outlet
I Cold water inlet
11
2 DESIGN PRINCIPLES AND OPERATING SEQUENCE
2.1 PRINCIPLE COMPONENTS
• A fully integrated electronic control board featuring electronic temperature control, anti-cycle control, pump over-run, selfdiagnostic fault indicator, full air/gas modulation
• Aluminium heat exchanger
• Electronic ignition with flame supervision
• Integral high-head pump
• Fan
• Expansion vessel
• Water pressure transducer
• Flue sensor
• Safety valve
2.2 MODE OF OPERATION (AT REST)
When the appliance is at rest and there are no requests for heating or hot water, the following functions are active:
• frost-protection system: the frost-protection system protects the appliance against the risk of frost damage both for CH and DHW. For CH line, if the main temperature falls to 5°C, the appliance will function on minimum power until the temperature on main reaches 35°C.
Moreover if the DHW temperature falls to 5°C, the appliance will function on minimum power until the temperature on main reaches 55°C.
• anti-block function: the anti-block function enables the pump and diverter valve actuator to be energised for short periods, when the appliance has been inactive for more than 24-hours.
2.3 MODE OF OPERATION (HEATING)
When there is a request for heat via the time clock and/or any external control, the pump and fan are started, the fan speed will modulate until the correct signal voltage is received at the control PCB. At this point an ignition sequence is enabled.
Ignition is sensed by the electronic circuit to ensure flame stability at the burner. Once successful ignition has been achieved, the electronic circuitry increases the gas rate to 75% for a period of 15 minutes.
Top AAV High limit thermostat
Thereafter, the boiler’s output will either be increase to maximum or modulate to suit the set requirement. When the appliance reaches the desired temperature the burner will shut down and the boiler will perform a three-minute anti-cycle (timer delay).
When the request for heat has been satisfied the appliance pump and fan may continue to operate to dissipate any residual heat within the appliance.
2.4 MODE OF OPERATION (HOT WATER)
When there is a request for DHW via a hot water outlet or tap, the pump and fan are started, the fan speed will modulate until the correct signal voltage is received at the control PCB. At this point an ignition sequence is enabled.
Ignition is sensed by the electronic circuit to ensure flame stabil ity at the burner. Once successful ignition has been achieved, the electronic circuitry increases the gas rate to maximum or will modulate output to stabilise the temperature.
In the event of the appliance exceeding the desired temperature
(set point) the burner will shut down until the temperature drops.
When the request for DHW has been satisfied the appliance pump and fan may continue to operate to dissipate any residual heat within the appliance.
2.5 SAFETY DEVICES
When the appliance is in use, safe operation is ensured by:
• a water pressure transducer that monitors system water pressure and will de-activate the pump, fan, and burner should the system water pressure drop below the rated tolerance;
• fan speed sensor to ensure safe operation of the burner;
• a high limit thermostat that over-rides the temperature control circuit to prevent or interrupt the operation of the burner;
• flame sensor that will shut down the burner when no flame signal is detected;
• flue sensor;
• a safety valve which releases excess pressure from the primary circuit.
Main heat exchanger
Flow temperature sensor
Return temperature sensor
Expansion vessel
Bottom
AAV
Water transducer
DHW non return valve
DHW temperature sensor
DHW heat exchanger
Pump
12
Fig. 5
Automatic by-pass
Drain valve
CH flow
Safety valve
DHW outlet
DHW inlet
CH return
Diverter valve
Flow regulator
DHW flow switch
DHWFilter
2.6 TECHNICAL DATA
Central Heating
Heat input (kW)
Maximum heat output (kW) 60/80°C
Minimum heat output (kW) 60/80°C
Maximum heat output (kW) 30/50°C
Minimum heat output (kW) 30/50°C
Minimum working pressure
Maximum working pressure
Minimum flow rate
Domestic Hot Water
Heat input (kW)
Flow Rate: ΔT35°C
Maximum inlet pressure
Minimum inlet pressure
Minimum flow rate
Gas Pressures
Inlet pressure (G20)
Heating maximum gas rate (m 3 /hr)
DHW maximum gas rate (m3/hr)
Minimum gas rate (m 3 /hr)
Injector size (mm)
Silencer flange (ø mm) (fitted)
Fan speed (G20)
Slow ignition (rpm)
CH maximum number of fan rotation (rpm)
DHW maximum number of fan rotation (rpm)
Mimum number of fan rotation (rpm)
Expansion Vessel
Capacity
Maximum system volume
Pre-charge pressure
Dimensions
Height (mm)
Width (mm)
Depth (mm)
Dry weight (kg)
Clearances
Sides
Top
Bottom
Front
Connections
Flow & return
Gas
DHW hot & cold
Safety valve
Condense
Electrical
Power consumption (Watts) DHW
Power consumption (Watts) CH
Voltage (V/Hz)
Internal fuse
External fuse
Flue Details (concentric 60-100)
Maximum horizontal flue length (60/100mm)
Maximum vertical flue length (60/100mm)
Flue Details (concentric 80-125)
Maximum horizontal flue length (80/125mm)
Maximum vertical flue length (80/125mm)
Efficiency
SEDBUK 2005 (%)
Emissions
CO2 @ maximum output (%)
CO2 @ minimum output (%)
CO @ maximum output (ppm)
CO @ minimum output (ppm)
NOx rating
VISION PLUS 25C
20.00
19.50
4.91
20.84
5.36
VISION PLUS 30C
25.00
24.45
5.90
26.23
6.40
0.25-0.45 bar
2.5 bar
350 l/h
VISION PLUS 25C
25.00
10.20
VISION PLUS 30C
31.60
12.9
8 bar
0.15 bar
2 l/min
VISION PLUS 25C
20.0 mbar
2.12
2.64
0.53
4.8
31
VISION PLUS 25C
4.000
4.900
VISION PLUS 30C
20.0 mbar
2.64
3.34
0.63
5.1
-
VISION PLUS 30C
4.000
5.300
6.100
1.400
VISION PLUS 25C
8 litres
74 litres
1 bar
VISION PLUS 25C VISION PLUS 30C
715
405
248
27 29
VISION PLUS 25C VISION PLUS 30C
12mm
150mm from casing or 25mm above flue elbow (whichever is applicable)
150mm
600mm
VISION PLUS 25C VISION PLUS 30C
22mm
15mm
15mm
15mm
21mm
6.900
1.400
VISION PLUS 30C
VISION PLUS 25C
82
VISION PLUS 30C
99
68 77
230/50
3.15A T (for PCB) - 3.15A F (for connections block)
3A
VISION PLUS 25C
5.85m
VISION PLUS 30C
4.85m
6.85m
VISION PLUS 25C
15.3m
20.3m
VISION PLUS 25C
5.85m
VISION PLUS 30C
12.8m
17.8m
VISION PLUS 30C
90.03
VISION PLUS 25C
9.0
9.5
180
20 class 6
90.16
VISION PLUS 30C
9.0
9.5
160
20 class 6
13
VISION PLUS 25C
Seasonal space heating energy efficiency class
Parameter
Rated heat output
At 30% of rated heat output and low-temperature regime (**)
Auxiliary electricity consumption
At full load
At part load
In Stand-by mode
Symbol
Prated
For boiler space heaters and boiler combination heaters: useful heat output
At rated heat output and hightemperature regime (*)
P4
P1 elmax elmin
PSB
Value
20
19,5
6,5
29,0
10,8
3,0
A
Unit kW kW kW
W
W
W
Water heating energy efficiency class
Parameter
Seasonal space heating energy efficiency
Symbol
ηs
For boiler space heaters and boiler combination heaters: useful efficiency
At rated heat output and hightemperature regime (*)
η4
At 30% of rated heat output and low-temperature regime (**)
Other parameters
Stand-by heat loss
Pilot flame energy consumption
Annual energy consumption
Sound power level, indoors
η1
Pstby
Pign
QHE
LWA
Value
93
87,7
97,8
40,0
-
53
53
A
Unit
%
%
%
W
W
GJ dB
Emissions of nitrogen oxides NOx 30 mg/kWh
For combination heaters:
Declared load profile
Daily electricity consumption
Annual electricity consumption
Qelec
AEC
XL
0,134
29 kWh kWh
Water heating energy efficiency
Daily fuel consumption
Annual fuel consumption
ηwh
Qfuel
AFC
(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
85
23,024
17
% kWh
GJ
(**) 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).
VISION PLUS 30C
Seasonal space heating energy efficiency class
Parameter
Rated heat output
Symbol
Prated
For boiler space heaters and boiler combination heaters: useful heat output
At rated heat output and hightemperature regime (*)
P4
Value
24
24,5
A
Unit kW kW
Water heating energy efficiency class
Parameter
Seasonal space heating energy efficiency
Symbol
ηs
For boiler space heaters and boiler combination heaters: useful efficiency
At rated heat output and hightemperature regime (*)
η4
Value
93
87,6
A
Unit
%
%
At 30% of rated heat output and low-temperature regime (**)
Auxiliary electricity consumption
At full load
At part load
In Stand-by mode
P1 elmax elmin
PSB
8,1
38,0
13,5
3,0 kW
W
W
W
At 30% of rated heat output and low-temperature regime (**)
Other parameters
Stand-by heat loss
Pilot flame energy consumption
Annual energy consumption
Sound power level, indoors
Emissions of nitrogen oxides
η1
Pstby
Pign
QHE
LWA
NOx
For combination heaters:
Declared load profile
Daily electricity consumption
Annual electricity consumption
Qelec
AEC
XL
0,128
28 kWh kWh
Water heating energy efficiency
Daily fuel consumption
Annual fuel consumption
ηwh
Qfuel
AFC
(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
97,8
35,0
-
63
56
30
85
22,947
17
%
W
W
GJ dB mg/kWh
% kWh
GJ
(**) 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).
NOTE (if the outdoor temperature sensor or the control panel, or even both devices, are present in the boiler)
With reference to the Delegated Regulation (EU) No. 811/2013, the information in the table can be used for completing the product data sheet and the labelling for room heating appliances, for mixed heating appliances, for all those appliances for enclosed space heating, for temperature control devices and solar devices:
ADDED DEVICES
OUTDOOR TEMPERATURE SENSOR
CONTROL PANEL*
OUTDOOR TEMPERATURE SENSOR + CONTROL PANEL*
(*) Set as ambient regulator
14
V
VI
CLASS
II
BONUS
2%
3%
4%
2.7 VARIABLE SPEED CIRCULATOR
Fig. 6 shows the flow-rate available – after allowing for pressure loss through the appliance – for system requirements. When using this graph, apply only the pressure loss of the system.
600
550
Fig. 6
300
250
200
150
100
50
0
0
500
450
400
350
100 200 300 400 500 600
Flow rate (l/h)
700 800 900 1000 1100
2.8 HOW TO FREE THE PUMP
To “release” the seized rotator shaft:
- set boiler status to OFF by pressing button 1
- remove front cover as detailed in paragraph “7.5”
- remove the circulator cap
- with a slotted screwdriver, rotate the shaft being careful not to strain the seat (Fig. 7).
- To extract the connector holder, lever with a screwdriver as shown in Fig. 8.
- Refit the cap and press key 1 to select the type of operation desired.
Carry out the operation with extreme caution so as not to damage the components themselves.
Fig. 7
1
Fig. 8
Fig. 9 fig. 2
Key Location
I
J
K
L
M
N
P
Q
A
B
C
D
E
F
G
H
R
S
T
V
W
Below an opening (window, air-brick, etc.)
Above an opening (window, air-brick, etc.)
To the side of an opening (window, air-brick, etc.)
Below gutter, drain-pipe, etc.
Below eaves
Below balcony, car-port roof, etc.
To the side of a soil/drain-pipe, etc.
From internal/external corner
Above ground, roof, or balcony level
From a surface or boundary facing the terminal
From a terminal facing a terminal
From an opening in the car-port into the building
Vertically from a terminal on the same wall
Horizontally from a terminal on the same wall
From a structure to the side of the vertical terminal
From the top of the vertical terminal to the roof flashing
To the side of a boundary
To the side of an opening or window on a pitched roof
Below an opening or window on a pitched roof
From a vertical terminal to an adjacent opening (window, air-brick, etc.)
From a vertical terminal to an adjacent vertical terminal
Minimum distance
300 mm
300 mm
300 mm
25 mm
25 mm
25 mm
25 mm (60mm for 80/125 - 5” flue)
25 mm (60mm for 80/125 - 5” flue)
300 mm
600 mm
1200 mm
1200 mm
1500 mm
300 mm
300 mm
As determined by the fixed collar of the vertical terminal
300 mm
600 mm
2000 mm
(call Vokera technical for advice)
300 mm (only if both terminals are the same height)
15
3 GENERAL REQUIREMENTS (UK)
This appliance must be installed by a competent person in accordance with the Gas Safety (Installation & Use) Regulations.
3.1 RELATED DOCUMENTS
The installation of this boiler must be in accordance with the relevant requirements of the Gas Safety (Installation & Use)
Regulations, the local building regulations, the current I.E.E. wiring regulations, the bylaws of the local water authority, the
Building Standards (Scotland) Regulation and Building Standards (Northern Ireland) Regulations.
It should be in accordance also with any relevant requirements of the local authority and the relevant recommendations of the following British Standard Codes of Practice.
ATTENTION
The use of PPE (Personal Protective Equipment) such as but not limited to gloves, mask, safety glasses, etc. is strongly recommended whenever carrying out the installation, repair, or maintenance of this appliance – please pay particular attention to:
• Sharp edges that may be encountered when:- handling or lifting the appliance, removing parts, etc. during installation and maintenance
• Airborne particles that may be released and/or disturbed when cleaning or removing components during maintenance
• Water treatment chemicals that could have been added to the system water may spill from the appliance and or components during maintenance
Please refer to an appropriate Health and Safety document such as HSE L23 (UK) or S.I. 299 (Ireland), for more detailed advice on safe working practices and procedures.
If the gas supply serves more than one appliance, it must be ensured that an adequate supply is maintained to each appliance when they are in use at the same time.
NOTE
It is recognised that ‘pressure loss’ through the gas cock and gas valve may result in a pressure drop of approximately 2mbar between the gas meter and gas valve inlet test point; this will not impair the performance of the appliance, provided that a dynamic pressure of 18mbar is available at the appliance inlet.
3.4 FLUE SYSTEM
The terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and discoloration that may occur to building products located nearby. The terminal must not be located in a place where it is likely to cause a nuisance (see Fig. 9). In cold and/or humid weather, water vapour will condense on leaving the terminal; the effect of such pluming must be considered.
If installed less than 2m above a pavement or platform to which people have access (including balconies or flat roofs) the terminal must be protected by a guard of durable material.
The guard must be fitted centrally over the terminal. Refer to
BS 5440 Part 1, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves.
3.5 AIR SUPPLY
The following notes are intended for general guidance only.
This appliance is a room-sealed, fan-flued boiler, consequently it does not require a permanent air vent for combustion air supply. When installed in a cupboard or compartment, ventilation for cooling purposes is also not required.
BS 5440
BS 5440
BS 5449
BS 5546
BS 6798
BS 6891
BS 7074
PART 1
PART 2
PART 1
PART 1
FLUES
FLUES & VENTILATION
FORCED CIRCULATION HOT WATER SYSTEMS
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60kW
LOW PRESSURE INSTALLATION PIPES
APPLICATION, SELECTION, AND INSTALLTION OF EXPANSION VESSELS AND
ANCILLARY EQUIPMENT FOR SEALED WATER SYSTEMS
3.2 LOCATION OF APPLIANCE
The appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current I.E.E. wiring regulations, and in Scotland, the electrical provisions of the Building Regulations, with respect to the installation of the appliance in a room or internal space containing a bath or shower.
When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower. The location chosen for the appliance must permit the provision of a safe and satisfactory flue and termination.
The location must also permit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, BS 6798 gives detailed guidance on this aspect.
A compartment used to enclose the appliance must be designed and constructed specifically for this purpose. An existing com partment/cupboard may be utilised provided that it is modified to suit. Details of essential features of compartment/cupboard design including airing cupboard installations are given in BS
6798. This appliance is not suitable for external installation.
3.3 GAS SUPPLY
The gas meter – as supplied by the gas supplier – must be checked to ensure that it is of adequate size to deal with the maximum rated input of all the appliances that it serves. Installation pipes must be fitted in accordance with BS 6891.
Pipe work from the meter to the appliance must be of adequate size. Pipes of a smaller size than the appliance gas inlet connection must not be used. The installation must be tested for tightness in accordance with BS6891.
16
3.6 WATER CIRCULATION
Detailed recommendations are given in BS 5449 Part 1 and
BS 6798. The following notes are for general guidance only.
3.6.1 PIPEWORK
It is recommended that copper tubing to BS 2871 Part 1 is used in conjunction with soldered capillary joints. Where possible pipes should have a gradient to ensure air is carried naturally to air release points and that water flows naturally to drain cocks.
Except where providing useful heat, pipes should be insulated to avoid heat loss and in particular to avoid the possibility of freezing. Particular attention should be paid to pipes passing through ventilated areas such as under floors, loft space and void areas.
3.6.2 AUTOMATIC BY-PASS
The appliance has a built-in automatic by-pass, consequently there is no requirement for an external by-pass, however the design of the system should be such that it prevents boiler
‘cycling’.
3.6.3 DRAIN COCKS
These must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance. The drain cocks must be manufactured in accordance with BS 2879.
3.6.4 AIR RELEASE POINTS
These must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete filling of the system.
3.6.5 EXPANSION VESSEL
The appliance has an integral expansion vessel to accommodate the increased volume of water when the system is heated. It can accept up to 8 litres of expansion from within the system, generally this is sufficient, however if the system has an unusually high water content, it may be necessary to provide additional expansion capacity (see 7.19).
A method for initial filling of the system and replacing water lost during servicing etc. directly from the mains supply, is provided
(see Fig. 25). This method of filling complies with the current
Water Supply (Water Fittings) Regulations 1999 and Water
Bylaws 2000 (Scotland). If an alternative location is preferred, it should be connected as detailed in Fig. 10.
3.6.7 LOW PRESSURE SEALED SYSTEM
An alternative method of fillin g the system would be from an independent make-up vessel or tank mounted in a position at least 1 metre above the highest point in the system and at least
5 metres above the boiler (see Fig. 11).
The cold feed from the make-up vessel or tank must be fitted with an approved non-return valve and stopcock for isolation purposes. The feed pipe should be connected to the return pipe as close to the boiler as possible.
3.6.8 FREQUENT FILLING
Frequent filling or venting of the system may be indicative of a leak. Care should be taken during the installation of the appliance to ensure all aspects of the system are capable of withstanding pressures up to at least 3 bar.
3.7 ELECTRICAL SUPPLY
The appliance is supplied for operation on 230V @ 50Hz electrical supply; it must be protected with a 3-amp fuse. The method of connection to the mains electricity supply must allow for complete isolation from the supply. The preferred method is by using a double-pole switch fused spur with a contact separation of at least 3,5mm (3° high-voltage category). The switch must only supply the appliance and its corresponding controls, i.e. time clock, room thermostat, etc. Alternatively an un-switched shuttered socket with a fused 3-pin plug both complying with
BS 1363 is acceptable. NOTE
Note
Vokera Ltd. cannot guarantee the performance or reliability of the appliance if/when it is supplied via an invertor or generator; in particular those that incorporate a ‘floating’ earth or ‘modified’ sine wave.
Warning!
This appliance must be earthed.
3.8 MOUNTING ON A COMBUSTIBLE SURFACE
The appliance can be mounted on a wall of combustible material without any requirement to fit any additional protective
(fire-resistant) material.
3.9 TIMBER FRAMED BUILDINGS
If the appliance is to be fitted in a timber framed building, it should be fitted in accordance with the Institute of Gas Engineers publication (IGE/UP/7) ‘Guide for Gas Installations in Timber
Frame Buildings’.
3.10 WATER TREATMENT
Vokèra recommend that an inhibitor - suitable for use with aluminium heat exchangers - is used to protect the boiler and system from the effects of corrosion and/or electrolytic action.
The inhibitor must be administered in strict accordance with the manufacturers instructions*.
*Water treatment of the complete heating system - including the boiler - should be carried out in accordance with BS 7593 and the Domestic Water Treatment Association’s (DWTA) code of practice. Vokera recommend that water treatment be carried out in accordance with the Benchmark Guidance on water treatment in central heating systems. If water treatment products are to be used, then they must be entirely suitable for use with an aluminium heat exchanger. Any water treatment product, must be administered in strict accordance with the manufacturer’s instructions.
If the appliance is to be installed to an existing system; water treatment and flushing of the complete heating system should be carried out in accordance with BS 7593 and the Benchmark
Guidance on water treatment in central heating systems.
3.11 SHOWERS
If the appliance is intended for use with a shower, the shower must be thermostatically controlled and be suitable for use with a combination boiler.
control valve control valve double check- valve flow pipe
Fig. 10
Automatic air-vent
Fig. 11 temporary connection
Make-up vessel or tank
Non-return valve
Stopcock
Heating return supply pipe
3E GENERAL REQUIREMENTS (EIRE)
This appliance must be installed by a competent person in accordance with and defined by, the Standard Specification
(Domestic Gas Installations) Declaration (I.S. 813).
3.1E RELATED DOCUMENTS
relevant requirements of the local building regulations, the current ETCI National Rules for Electrical Installations and the bylaws of the local water undertaking.
It should be in accordance also with any relevant requirements of the local and/or district authority.
The use of PPE (Personal Protective Equipment) such as but not limited to gloves, mask, safety glasses, etc. is strongly recommended whenever carrying out the installation, repair, or maintenance of this appliance – please pay particular attention to:
• Sharp edges that may be encountered when:- handling or lifting the appliance, removing parts, etc. during installation and maintenance
• Airborne particles that may be released and/or disturbed when cleaning or removing components during maintenance
• Water treatment chemicals that could have been added to the system water may spill from the appliance and or components during maintenance
Please refer to an appropriate Health and Safety document such as HSE L23 (UK) or S.I. 299 (Ireland), for more detailed advice on safe working practices and procedures.
3.2E LOCATION OF APPLIANCE
The appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current ETCI National Rules for Electrical Installations, and
17
I.S. 813, Annex K.
When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower.
The location chosen for the appliance must permit the provision of a safe and satisfactory flue and termination. The location must also permit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, refer to I.S. 813 for detailed guidance on this aspect.
A compartment used to enclose the appliance must be designed and constructed specifically for this purpose. An exist ing compartment/cupboard may be utilised provided that it is modified to suit.
This appliance is not suitable for external installation.
3.3E GAS SUPPLY
checked to ensure that it is of adequate size to deal with the maximum rated input of all the appliances that it serves. Installation pipes must be fitted in accordance with I.S. 813.
Pipe work from the meter to the appliance must be of adequate size. Pipes of a smaller size than the appliance gas inlet connection must not be used. The installation must be tested for tightness in accordance with I.S. 813.
If the gas supply serves more than one appliance, it must be ensured that an adequate supply is maintained to each appliance when they are in use at the same time.
NOTE
It is recognised that ‘pressure loss’ through the gas cock and gas valve may result in a pressure drop of approximately 2mbar between the gas meter and gas valve inlet test point; this will not impair the performance of the appliance, provided that a dynamic pressure of 18mbar is available at the appliance inlet.
3.4E FLUE SYSTEM
The terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and discoloration that may occur to building products located nearby. The terminal must not be located in a place where it is likely to cause a nuisance (see I.S. 813). In cold and/or humid weather, water vapour will condense on leaving the terminal; the effect of such pluming must be considered.
If installed less than 2m above a pavement or platform to which people have access (including balconies or flat roofs) the terminal must be protected by a guard of durable material.
The guard must be fitted centrally over the terminal. Refer to
I.S. 813, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves.
3.5E AIR SUPPLY
This appliance is a room-sealed, fan-flued boiler, consequently it does not require a permanent air vent for combustion air supply.
When installed in a cupboard or compartment, ventilation for cooling purposes is also not required.
3.6E WATER CIRCULATION
Specific recommendations are given in I.S. 813. The following notes are for general guidance only.
3.6.1E PIPEWORK
It is recommended that copper tubing be used in conjunction with soldered capillary joints.
Where possible pipes should have a gradient to ensure air is carried naturally to air release points and that water flows naturally to drain cocks.
Except where providing useful heat, pipes should be insulated to avoid heat loss and in particular to avoid the possibility of freezing. Particular attention should be paid to pipes passing through ventilated areas such as under floors, loft space and void areas.
3.6.2E AUTOMATIC BY-PASS
The appliance has a built-in automatic by-pass, consequently there is no requirement for an external by-pass, however the design of the system should be such that it prevents boiler
‘cycling’.
These must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance.
3.6.4E AIR RELEASE POINTS
These must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete filling of the system.
18
3.6.5E EXPANSION VESSEL
The appliance has an integral expansion vessel to accommodate the increased volume of water when the system is heated.
Refer to the specification table for more detailed information.
3.6.6E FILLING POINT
A method for initial filling of the system and replacing water lost during servicing etc. directly from the mains supply, is provided
(see fig. Fig. 25). This method of filling complies with the cur rent Water Supply (Water Fittings) Regulations 1999 and Water
Bylaws 2000 (Scotland).
3.6.7E LOW PRESSURE SEALED SYSTEM
An alternative method of filling the system would be from an independent make-up vessel or tank mounted in a position at least 1 metre above the highest point in the system and at least
5 metres above the boiler (see Fig. 11). The cold feed from the make-up vessel or tank must be fitted with an approved nonreturn valve and stopcock for isolation purposes. The feed pipe should be connected to the return pipe as close to the boiler as possible.
3.6.8E FREQUENT FILLING
Frequent filling or venting of the system may be indicative of a leak. Care should be taken during the installation of the appliance to ensure all aspects of the system are capable of withstanding pressures up to at least 3 bar.
3.7E ELECTRICAL SUPPLY
The appliance is supplied for operation on 230V @ 50Hz electrical supply; it must be protected with a 3-amp fuse. The method of connection to the mains electricity supply must allow for complete isolation from the supply. The preferred method is by using a double-pole switch fuse spur with a contact separation of at least 3,5 mm (3° high-voltage category). The switch must only supply the appliance and its corresponding controls, i.e. time clock, room thermostat, etc.
NOTE
Vokera Ltd. cannot guarantee the performance or reliability of the appliance if/when it is supplied via an invertor or generator; in particular those that incorporate a ‘floating’ earth or ‘modified’ sine wave.
The appliance can be mounted on a wall of combustible material without any requirement to fit any additional protective
(fire-resistant) material.
3.9E TIMBER FRAMED BUILDINGS
If the appliance is to be fitted in a timber framed building, it should be fitted in accordance with I.S. 813 and local Building
Regulations.
The Institute of Gas Engineers publication (IGE/UP/7) ‘Guide for Gas Installations in Timber Frame Buildings’ gives specific advice on this type of installation.
3.10E WATER TREATMENT
Vokèra recommend that an inhibitor - suitable for use with aluminium heat exchangers - is used to protect the boiler and system from the effects of corrosion and/or electrolytic action.
The inhibitor must be administered in strict accordance with the manufacturers instructions*.
*Water treatment of the complete heating system - including the boiler - should be carried out in accordance with BS 7593 and the Domestic Water Treatment Association’s (DWTA) code of practice. Vokera recommend that water treatment be carried out in accordance with the Benchmark Guidance on water treatment in central heating systems. If water treatment products are to be used, then they must be entirely suitable for use with an aluminium heat exchanger. Any water treatment product, must be administered in strict accordance with the manufacturer’s instructions.
If the appliance is to be installed to an existing system; water treatment and flushing of the complete heating system should be carried out in accordance with BS 7593 and the Benchmark
Guidance on water treatment in central heating systems.
3.11E SHOWERS
must be thermostatically controlled and be suitable for use with a combination boiler.
3.12E DECLARATION OF CONFORMITY
A Declaration of Conformity (as defined in I.S. 813) must be provided on completion of the installation.
A copy of the declaration must be given to the responsible person and also to the gas supplier if required.
4 INSTALLATION
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
4.1 PREPARATION FOR MOUNTING THE
APPLIANCE
The appliance should be mounted on a smooth, vertical surface, which must be capable of supporting the full weight of the appliance. Care should be exercised when determining the position of the appliance with respect to hidden obstructions such as pipes, cables, etc.
When the position of the appliance has been decided – using the template supplied – carefully mark the position of the wall mounting bracket (see Fig. 12 ) and flue-hole (if applicable).
Fig. 12
A
Reduction for additional bends
Bend
45º bend
90º bend
Reduction in maximum flue length for each bend
1.0 metre
1.0 metre
Horizontal flue terminals and accessories
Part No.
Description
20122759 Standard horizontal flue Kit
20122761 Telescopic flue kit
20132059 90-degree bend
20132058 45-degree bend (2)
20132060 500mm extension
20132061 1000mm extension
20132062 2000mm extension
20131979 telescopic extension
522 plume management kit
20135587 100mm flue brackets (5)
Length
900mm
700mm
N/A
N/A
500mm
1000mm
2000mm
372/519mm
1370mm
N/A
Fig. 12 : Usin g the template ( A ) provided with the kit, mark and drill a 125mm hole for the passage of the flue pipe. The hole should be drilled to ensure any condense fluid that forms, is allowed to drain back to the appliance. The fixing holes for the wall-mounting bracket should now be drilled and plugged, an appropriate type and quantity of fixing should be used to ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.
NOTE PRE-FIXING JIG
A ‘Pre-fixing Jig’ is available as an accessory (code 20177531), should it be necessary to pre-fabricate the appliance pipework, i.e. first-fix, prior to installing the appliance.
4.2.2 FITTING THE TELESCOPIC HORIZONTAL FLUE
KIT
In some instances it may necessary to cut the inner 60mm pipe of the flue bend at the point indicated (Fig. 15 - pos. A ) to allow for easier insertion to the boiler flue spigot.
Outer clamps Terminal or extension
4.2 FITTING THE FLUE
This appliance incorporates a ‘click-fit’ flue connection at the top of the appliance, and also incorporates a rear-flue connection.
Should the rear-flue connection be preferred, the flue outlet will require to be re-configured from a top outlet to a rear outlet.
Please refer to section 4.6.1.2 and the instructions supplied with the rear-flue kit (code 29450133) on how to re-configure the flue outlet and how to install the rear-flue terminal.
4.2.1 CONCENTRIC HORIZONTAL FLUE
These instructions relate specifically to the installation of this appliance with the Vokera 60/100mm ‘X-type’ (click-fit) flue terminals accessories. For specific instructions on installing this appliance with an alternative Vokera flue system, e.g. 80/125mm; please refer to the instructions supplied with the specific flue system, or download the instructions from the Vokera website.
The appliance flue outlet elbow can be rotated through 360º on its vertical axis. In addition the flue may be extended from the outlet elbow in the horizontal plane. A reduction must also be made to the maximum length (see table below) when additional bends are used.
Fig. 13
4.2.3 FITTING THE HORIZONTAL FLUE KIT
Carefully measure the distance from the centre of the appliance flue outlet to the edge of the finished outside wall (dimension
X). Add 65mm to dimension X to give you Dimension Y (see
Fig. 14). Measure dimension Y from the terminal end of the concentric flue pipe and cut off the excess ensuring any burrs are removed. Pass the concentric flue pipe through the previously drilled hole. Fit the flue bend to the boiler flue outlet and insert the concentric flue pipe into the flue bend ensuring the correct seal is made.
NOTE (Fig. 22): The appliance incorporates a ‘click-fit’ flue connection. Ensure that both screws ‘C’ on the ‘click-fit’ have been slackened off. Ensure that the connector is correctly aligned with the ‘click-fit’ and insert it into the ‘click-fit’ until it clicks into position (this is when the tabs at points ‘A’ are located in the groove of the flue bend connector). Both screws (C) should now be tightened.
NOTE
Fit the internal (white) trim to the flue assembly prior to connecting the flue pipe to the bend.
You must ensure that the entire flue system is properly supported and connected. Seal the flue assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproofing. The exterior trim can now be fitted.
19
4.2.5 FITTING THE REAR FLUE (REAR FLUE OUTLET
ONLY)
Using the template provided, mark and drill a 125mm hole for the passage of the flue pipe. The hole should be drilled
LEVEL to ensure any condense fluid that forms, is allowed to drain back to the appliance. The fixing holes for the wallmounting bracket should now be drilled and plugged, an appropriate type and quantity of fixing should be used to ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, attach the rear flue terminal to the appliance (using the previously retained screws) and fix the telescopic terminal to the correct length (wall thickness) ensuring that the terminal will protrude through the wall by the correct distance. At this point, lift the appliance and carefully insert the terminal into and through the wall, ensuring that the holes in the appliance back frame are aligned with the studs on the wall bracket.
Fig. 14
A
Fig. 17
Fig. 15
4.2.4 EXTENDING THE FLUE
Connect the bend – supplied with the terminal kit – to the top of the boiler using clamp (supplied) see Fig. 16. The additional bends & extensions have push-fit connections, care should be taken to ensure that the correct seal is made when assembling the flue system. Connect the required number of flue extensions or bends (up to the maximum equivalent flue length) to the flue terminal (Fig. 16).
The flue system should have a 3º rise from the boiler to outside, to ensure any condense fluid that forms, is allowed to drain back to the appliance.
NOTE
When cutting an extension to the required length, you must ensure that the excess is cut from the plain end of the extension (Fig. 16). Remove any burrs, and check that all seals are located properly. You must ensure that the entire flue system is properly supported and connected. Seal the flue assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproofing. The interior and exterior trim can now be fitted.
Fig. 18
Fig. 19
Using the screws and washers provided, secure the appliance onto the wall bracket and tighten with a suitable spanner.
Seal the flue assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproofing. The exterior wall trim can now be fitted.
Part No.
29450133
Description
Rear flue terminal
Length
825mm
20
Fig. 16
4.5.2 CONCENTRIC VERTICAL FLUE
Using Fig. 21 as a reference, cut a 110mm diameter hole in the roof and/or ceiling to facilitate the route of the vertical flue system. NOTE: ensure that the top of the appliance - if already in position - is covered and protected from the possibility of any dust or debris falling or entering the appliance via the flue outlet.
Fit the appropriate flashing to the roof and insert the vertical flue terminal through the flashing from outside, ensuring that the collar of the terminal is located over the outlet of the flashing.
The fixing holes for the appliance wall mounting bracket should now be drilled and plugged. An appropriate type and quantity of fixing should be used to ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.
If the vertical flue system requires additional extensions or bends, connect these to the vertical terminal, ensuring the following:
- the maximum permitted flue length is not exceeded
- reductions to the maximum flue length have been made for any bends that are used on the vertical flue system
- any horizontal sections of the flue system, incorporate a
3-degree fallback to the appliance
- the entire flue system is fully supported and secured using the appropriate brackets
- if/when an extension is cut to a shorter length, ensure that the excess length is cut from the plain end of the extension, and that any burrs or rough edges are removed
- all seals are properly located before assembling or connecting the flue system.
IMPORTANT: The VX flue terminal is supplied with a sachet of silicone lubricant; smear a small amount of the lubricant around both inner and outer connections, at both ends of the vertical flue connector (supplied with the VX terminal).
NOTE (Fig. 20): The appliance incorporates a ‘click-fit’ flue connection. Ensure that both screws ‘ C ’ on the ‘click-fit’ have been slackened off. Ensure that the connector is correctly aligned with the ‘click-fit’ and insert it into the ‘click-fit’ until it clicks into position (this is when the tabs at points ‘ A ’ are located in the groove of the vertical flue connector). Both screws ( C ) should now be tightened.
NOTE: If more convenient, the vertical flue connector can be attached to the vertical flue terminal/extension before connecting it to the appliance.
Vertical Flue Terminals & Accessories
Code Description
20122763 Vertical Flue Kit
20132059 90-degree bend
20132058 45-degree bend (2)
20132060 500mm extension
20132061 1000mm extension
20132062 2000mm extension
20131979 telescopic extension
20135587 100mm flue brackets (5)
20132050 pitched roof flashing
20135582 flat roof flashing
Fig. 21
Length
1000mm
N/A
N/A
500mm
1000mm
2000mm
372/519mm
N/A
N/A
N/A
C vertical connection
A
Fig. 20
B
A
C flange installed as standard
NOTE
Additional bends and/or extensions can be connected to the terminal connector if desired, however if additional bends are fitted, a reduction must be made to the maximum flue length
(see table below).
Reduction for bends
Bend
45º bend
90º bend
Reduction in maximum flue length for each bend
1.0 metre
1.0 metre
IMPORTANT
The vertical flue terminal is 1.0 metre in length and cannot be cut; therefore it may be necessary to adjust the height of the appliance to suit or use a suitable extension.
4.3 CONNECTING THE GAS AND WATER (FIG. 25)
The appliance is supplied with an accessory pack that includes service valves. The service valves are of the compression type.
The accessory pack contains sealing washers’ etc, for use with the service valves. When connecting pipe work to the valves, tighten the compression end first then insert the sealing washers before tightening the valve to the appliance.
NOTE
It will be necessary to hold the valve with one spanner whilst tightening with another.
4.3.1 GAS
The appliance is supplied with a 15mm service valve, connect a
15mm pipe to the inlet of the valve and tighten both nuts.
NOTE
It will be necessary to calculate the diameter of the gas supply pipe to ensure the appliance has an adequate supply of gas.
4.3.2 FLOW & RETURN
The appliance is supplied with 22mm service valves for the flow and return connections, connect a 22mm pipe to the inlet of each valve and tighten both nuts.
NOTE
Depending on system requirements, it may necessary to increase the size of the flow & return pipe work after the service valve connections.
21
4.3.3 COLD WATER INLET
The appliance is supplied with a 15mm stopcock, connect a 15mm pipe to the inlet of the stopcock and tighten both nuts.
4.3.4 HOT WATER OUTLET
The appliance is supplied with a 15mm outlet connection, connect a 15mm pipe to the outlet connection and tighten both nuts.
4.3.5 SAFETY VALVE
Connect the safety valve connection pipe to the safety valve outlet and tighten. The discharge pipe must have a continuous fall away from the appliance to outside and allow any water to drain away thereby eliminating the possibility of freezing.
The discharge pipe must terminate in a position where any water
- possibly boiling - discharges safely without causing damage or injury, but is still visible.
Fig. 25
Safety valve outlet
Gas cock
Cold water inlet stopcock
C/H return valve
Hot water outlet
C/H flow valve
Filling loop
4.3.6 CONDENSE PIPE
This appliance will - under normal operating conditions - produce condensate fluid that will require to be disposed of via the dwelling’s waste water drainage system.
Vokera strongly recommends that the condensate pipe is connected to the internal waste water pipework in accordance with
BS6798. BS6798 provides comprehensive instruction and advice on all permissible condensate disposal methods; notwithstanding this, it is essential that the following is strictly adhered to:
Use only plastic drainage pipe (minimum OD of 21.5mm)
Horizontal runs must incorporate a minimum 45mm fall per metre, away from the appliance
External pipework and/or pipework in unheated areas, must have a minimum OD of 32mm and be insulated with Class-O pipe insulation
The route, type, and termination of the condensate disposal method, must not permit any spillage of condensate fluid, into the dwelling in the event of a blockage or freezing of the condensate pipework.
Should it not be possible to route and terminate the condensate pipework internally using ‘gravity discharge’; Vokera recommends that the Vokera condensate pump (code 404) be considered as an alternative solution.
Ensure that the end-user is aware of the effect/consequences of the condensate pipework becoming blocked or frozen.
4.3.7 CONNECTING THE CONDENSATE OUTLET
Connect the (supplied) grey flexible outlet pipe to the outlet of the condensate trap, care should be taken to ensure that the pipe connection to the trap remains secure. Connect a suitable plastic
(not copper) pipe (no less than 21mm diameter) to the outlet pipe and ensure it discharges in accordance with local building regulations or other rules in force.
4.4 ELECTRICAL CONNECTIONS
The boiler is supplied with a short fly-lead. This lead can be used for connection to the electrical supply. Connect the fly-lead to a fused plug or fused isolator in the following way:
• brown wire to LIVE supply
• blue wire to NEUTRAL supply
• green/yellow to EARTH connection.
Insert the supplied 3-AMP fuse into the fused isolator or fused plug.
Should the fly-lead be unsuitable, refer to 4.7 for details on how to connect the electrical supply directly to the boiler.
The electrical supply must be as specified in section 3/3E. A qualified electrician should connect the appliance to the electri cal supply. If controls - external to the appliance - are required, a competent person must undertake the design of any external electrical circuits, please refer to section 8 for detailed instructions.
ANY EXTERNAL CONTROL OR WIRING MUST BE SERVED
FROM THE SAME ISOLATOR AS THAT OF THE APPLIANCE.
The supply cable from the isolator to the appliance must be 3-core flexible seized 0.75mm to BS 6500 or equivalent. Wiring to the appliance must be rated for operation in contact with surfaces up to 90 ºC.
4.5 CASING REMOVAL
To gain internal access to the appliance you must first remove the casing, proceed as outlined below:
• locate and unscrew the 2-screws ( A - Fig. 26) that secure the outer casing to the appliance
• lift the casing upward to disengage it from the top locating hooks and then remove
• store the casing and screws safely until required. Re-fit in the reverse order
• remove the screw below the control fascia and gently lower it until it rests.
4.6 APPLIANCE TERMINAL BLOCK
The appliance terminal block is located on the rear of the control fascia. Remove the casing as described in 4.5. Gently pull the control panel forwards and down. Locate the terminal block cover and remove the 2-retaining screws (Fig. 27).
NOTE
The appliance comes with a factory fitted link (‘TA’) to allow basic operation of the boiler via the mode selector switch. If it is anticipated that external controls will be required please refer to the wiring diagrams in section 8 for more detailed information.
4.7 CONNECTING THE MAINS (230V) INPUT
Unhook and remove the terminal block cover (230V). Pass the cable through the cable anchorage point. Connect the supply cable wires (LIVE, NEUTRAL, & EARTH) to their corresponding terminals (L, N, & E) on the appliance – high voltage – terminal block. When connecting the EARTH wire, ensure that it’s left slightly longer that the others, this will prevent strain on the EARTH wire should the cable become taut. Do not remove the link wire unless additional external controls are to be fitted (see section 8) route the electrical supply via the cable entry/exit point and secure using the cable anchorage grip and screws.
NOTE
It is the installer’s responsibility to ensure that the appliance is properly Earthed. Vokèra Ltd. cannot be held responsible for any damages or injuries caused as a result of incorrect Earth wiring.
Fig. 27
22
5 OPERATION
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
Ensure that steps 6.1 through to 6.6 have been completed before supplying the gas and electrical supply to the appliance.
5.2 CONTROL PANEL
Your boiler is equipped with a large LCD display that indicates the appliance operating status.
+ +
5.1 ACCESS TO THE PARAMETERS
Pressing the MENU key for at least 2 sec provides access to the P1 menu, allowing the parameters to be programmed. If the menu is empty, P8.04 is displayed, otherwise the first item in the menu appears.
BB
RESET MENU
Access to the TECHNICAL parameters programming menu is password protected; pressing MENU a second time for at least 2sec, PWD is displayed blinking with a frequency of
0.5sec ON and 0.5sec OFF for 2sec.
Then <<0000>> is displayed blinking with a frequency of
0.5sec ON and 0.5sec OFF; the icons , , and come on to allow the password to be entered.
A
B
A+B
It is normally used to raise the domestic hot water temperature, when the arrow is highlighted it has the confirm function
It is normally used to lower the domestic hot water temperature, when the arrow is highlighted it has the back/cancel function
Access to the domestic hot water comfort functions (see para graph “5.8.9 Domestic hot water comfort function”)
C
D
It is normally used to raise the heating water temperature, when the arrow is highlighted you can move inside the
P1 menu
It is normally used to lower the heating water temperature, when the arrow is highlighted you can move inside the
P1 menu
A+C
1
Access to the menu for setting the clock (see paragraph “5.4
STARTING THE BOILER”)
Used to change the operating status of the boiler (OFF,
SUMMER and WINTER)
2
Used to reset the alarm status or to interrupt the vent cycle
3
Used to access the INFO and P1 menus. When the icon
Enter is shown on the display, the key has the ENTER func tion and is used to confirm the value set during the program ming of a technical parameter
1+3
Lock and unlock keys
2+3 When the boiler is set to OFF it is used to start the combustion analysis function (CO)
Indicates the connection to a remote device (OT or RS485)
Indicates the connection to a WIFI device
There are two levels of access to the parameters:
- INSTALLER
- SERVICE
(the user level does not require a password).
Set the password supplied by the manufacturer for the desired access level using the button at the , arrows to enter the value.
Press the key A at the arrow to confirm.
Pressing key B at the arrow returns you to the previous level, exiting the P1 menu.
It is now possible to navigate the menu using the C and D arrow keys, confirming access to the sub-menu with arrow key
A or else returning to the previous level using arrow key B .
Prolonged pressure at any point of the menu (>2sec) of the key returns you to the main page.
The interface also reverts automatically to the main screen if no key is pressed within 60sec.
Reset
Enter
Indicates the presence of an outdoor temperature sensor
Indicates the activation of special domestic hot water functions or the presence of a system for managing the solar thermal array
Indicates the connection to a heat pump (not used on this model)
Icon that lights up when there is an alarm
It comes on when there is a fault together with the icon , except for flame and water alarms
Indicates the presenc e of a flame, in the event of a flame lockout the icon looks like
It comes on when there are alarms that require a manual reset by the operator
It comes on when there is an operation confirmation request
When the icon is active, it indicates that the "confirm” function of button A is active
When the icon is active, it indicates that the "back/cancel” function of button B is active
23
When the icon is active, it is possible to navigate the menu or raise the value of the selected parameter
When the icon is active, it is possible to navigate the menu or lower the value of the selected parameter
The icon comes on if central heating is active, it blinks if a heating request is in progress
The icon comes on if domestic hot water is active, it blinks if a domestic hot water request is in progress
They indicate the set point level set (1 notch minimum value, 4 notches maximum value)
1 2 3 4 5 6 7 Indicates the days of the week
AUTO
ON
Only if clock has been enabled
MAN ON Only if clock has been enabled
MAN OFF Only if clock has been enabled
5.3 SETTINGS MENU TREE STRUCTURE
Below is a list of the parameters that can be programmed; if the adjustment board does not support the relative function, the interface returns an error message. Some of the information might not be available depending on the access level, the status of the machine or the system configuration.
Menu Parameters Value
P1
P3
P4
P1.01
P1.02
P1.03
P1.05
P3.01
P3.02
P3.03
P3.04
P3.05
P3.06
P3.07
P3.08
P3.09
P3.10
P3.11
P3.12
P4.01
P4.02
P4.03
P4.04
P4.05
P4.08
P4.09
P4.10
P4.11
P4.12
P4.13
P4.14
SETTINGS
LANGUAGES
TIME
TIME PROGRAMM
SCROLLING
CONFIGURATION
HYDRAULIC
CONFIGURATION
WATER PRESSURE
TRANSDUCER
AUTO FILL ENABLE
0 IT
1 RO
2 FR
3 EN
4 SR
5 HR
6 ES
7 EL
8 BG
9 PL
10 SL
ONLY IF CLOCK IN ENABLE
0 / 1
0 / 1 / 2 / 3 / 4
0 / 1
0 / 1
BEGIN SYSTEM FILLING NOT AVAILABLE ON THIS MODEL
AIR PURGING CYCLE 0 / 1
MIN FAN SPEED 1.200-3.600
MAX FAN SPEED
SOFT IGNITION
3.700-9.999
MIN - MAX
USER
USER
USER
INSTALLER
SERVICE
SERVICE
SERVICE
INSTALLER
INSTALLER
INSTALLER
MAX FAN SPEED HTG MIN - MAX INSTALLER
RANGE RATED MIN - MAX_CH INSTALLER
CONFIG AUX 1 0 / 1 / 2 INSTALLER
EXHAUST PROBE RESET 0 / 1
HEATING
HYST OFF HIGH TEMP
HYST ON HIGH TEMP
HYST OFF LOW TEMP
HYST ON LOW TEMP
PUMP CONTROL TYPE
OT CASCADE CONTROL
2 - 10
2 - 10
INSTALLER
SERVICE
SERVICE
2 - 10
2 - 10
NOT USED
NOT AVAILABLE ON THIS MODEL
SERVICE
SERVICE
SCREED FUNCTION 0 / 1
ANTI CYCLE FUNCTION 0 - 20min
RESET CH TIMERS
MAIN ZONE ACTUATION
TYPE
MAIN ZONE ADDRESS
MAIN ZONE HYDRAULIC
CONF
0 / 1
0 / 1
1 - 6
0 / 1
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
1
1
0
1 see technical data table see technical data table see technical data table see technical data table see technical data table
0
0
0
3min
0
0
3
0
3
3
5
5
24
Menu Parameters
P5
P7
P8
P4.15
P4.16
P4.17
P4.18
P4.19
P4.20
P4.21
P4.22
P4.23
P4.24
P4.25
P4.26
P4.27
P4.28
P4.29
P4.30
P4.31
P4.32
P5.11
P7.06
P7.07
P8.01
P8.03
Value
MAIN ZONE TYPE
MAX CH SET
MIN CH SET
0 / 1
AT: MIN CH SET - 80.5
BT: MIN CH SET - 45.0
AT: 40 - MAX CH SET
BT: 20 - MAX CH SET
WEATHER COMP ENABLE 0 / 1
WEATHER COMP CURVE
1.0-3.0
0.2-0,8
AT
BT
NIGHT COMPENSATION 0 / 1
CH CLOCK ENABLE 0 / 1
MODE SELECTION 0 / 1
ZONE1 ENABLE
ZONE1 ADDRESS
ZONE1 HYDRAULIC
CONFIG
ZONE1 TYPE
0 / 1
1 - 6
0 / 1
ZONE1 SET
ZONE1 MAX CH SET
ZONE1 MIN CH SET
0 / 1
ZONE1 MIN CH SET -
ZONE1 MAX CH SET
AT: ZONE1 MIN CH SET - 80,5
BT: ZONE1 MIN CH SET - 45,0
AT: 40 - ZONE1 MAX CH SET
BT: 20 - ZONE1 MAX CH SET
ZONE1 OTR
ZONE1 OTD CURVES
0 / 1
1.0-3.0
0.2-0.8
0 / 1
AT
BT
ZONE1 NIGHT COMP
DHW
DHW ENHANCED
FUNCTION
SERVICE
AUTOSTOP FUNCTION
SERVICE EXPIRY
CONNECTIVITY
BUS 485 CONFIG
OT CONFIG
0 / 3
0 / 1 / 2
0 / 1
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
USER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
INSTALLER
Refer to AUTOSTOP instructions
NOT AVAILABLE ON THIS MODEL
SERVICE
SERVICE
5.4 STARTING THE BOILER
Ensure that steps 6.1 through to 6.6 have been completed before supplying the gas and electrical supply to the appliance.
- Position the system’s master switch to the “on” position.
80.5
40
0
2.0
0 factory
0
80.5
40
0
2.0
0
0
0
0
0
0
1
40 - 80.5
0
0
1
0
52
to exit the time programming without saving the modified values just press .
NOTE: It is possible to change the TIME and DAY settings also later by accessing the P1.02 parameter in the P1 menu, or by pressing the A+C keys for at least 2sec.
A
+ +
C
If necessary, the interface automatically goes to the clock menu. On the main screen the icons , , and and
ENTER come on while 00:00 is displayed with the first two digits blinking with a frequency of 0.5 sec ON, 0.5 sec OFF.
RESET MENU
If you need to set the language, select the menu P1 and confirm your choice using .
Use the arrows to display parameter P1.01, then enter the submenu by pressing .
Use the and buttons to set the desired language
– see “ 5.3 SETTINGS MENU TREE STRUCTURE”. To confirm your choice, press
Enter
.
To set the time and day follow the following instructions:
set the hour with the and arrows, then confirm with A
set the minutes with the and arrows, then confirm with B
set the day of the week with the and arrows. The segment in line with the day selected blinks, press the
MENU key at the icon Enter to confirm the time and day setting. The clock blinks for 4sec and then returns to the main screen
25
Each time that the boiler is powered a vent cycle is carried out lasting 4 min. The display shows the message -AIR lighting up the icon RESET.
To interrupt the vent cycle press RESET.
Set the boiler to OFF by pressing .
5.5 BOILER CONFIGURATION
To access the boiler configuration menu, access the technical parameters menu, as indicated in the paragraph 5.1 Access to the parameters.
Use the and arrows to scroll through the parameters of the pre-selected sub-menu, confirming the selection with
A; change the value of the pre-selected parameter with C and
D confirming the selection with the key indicated by the icon
Enter .
Description of the settings menu
Some of the following functions might not be available depending on the access level and the type of machine.
P1 (SETTINGS menu)
P1.01
Select the parameter to set the desired language (see the tree-view menu in
“ 5.3 SETTINGS MENU TREE STRUCTURE”).
P1.02
From this menu the time and the number of the day of the week can be adjusted.
P1.03
This parameter allows you to set the time programm, only if the clock is enabled.
P1.05
This parameter allows you to enable scrolling text after the parameter code itself:
0= OFF
1= ON
P3 (CONFIGURATION menu)
P3.01
This parameter allows you to set the type of hydraulic configuration of the boiler:
0 = ONLY HEATING
1 = INSTANTANEOUS FLOWSWITCH
2 = INSTANTANEOUS FLOWMETER
3 = STORAGE CYLINDER WITH PROBE
4 = STORAGE CYLINDER WITH THERMOSTAT
The factory setting for this parameter is 1. When replacing the electronic board make sure that this parameter is set to 1.
P3.02
This parameter allows you to set the type of water pressure transducer:
0 = water pressure switch
1 = pressure transducer
The factory setting for this parameter is 1 do not change! When replacing the electronic board make sure that this parameter is set to 1.
P3.03
This parameter allows you to enable the “semi-automatic filling” function since the boilers have a pressure transducer and a filling solenoid valve installed. The factory setting for this parameter is 0, do not change! When replacing the electronic board make sure that this parameter is set to 0.
P3.04
This only appears if P3.03=1. NOT AVAILABLE ON THIS MODEL
P3.05
This parameter allows you to disable the vent cycle function; the factory setting is 1, set the parameter to 0 to disable the function.
P3.06
This parameter allows you to change the minimum number of the fan's rpm.
P3.07
This parameter allows you to change the maximum number of the fan's rpm.
P3.08
This parameter allows you to change the soft ignition value.
P3.09
This parameter allows you to change the maximum number of the fan's rpm in heating mode. Do not change!
P3.10
This parameter allows you to change the heat output in heating mode, the factory setting for this parameter is P3.09 and can be programmed within the
P3.06 - P3.09 range. For more information about the use of this parameter see “8.11 Range rated”.
P3.11
This parameter allows you to configure the operation of an additional relay
(only if the relay board is installed (not supplied as standard)) to bring a phase (230Vac) to a second heating pump (additional pump) or a zone valve. The factory setting for this parameter is 0 and can be set within the
0 - 2 range with the following meaning:
Pin 1 and 2 of X21
P3.11 = 0
P3.11 = 1
P3.11 = 2
Not present Jumpered additional pump management zone valve management zone valve management zone valve management additional pump management additional pump management
P3.12
This parameter allows operating hours meter to be reset in certain conditions
(see “8.13 Lights and faults” for more information, E091 faults). The factory setting for this parameter is 0, set to 1 to reset the flue gas probe hours meter after the primary heat exchanger has been cleaned. Once the reset procedure is finished, the parameter returns automatically to 0.
P4 (HEATING menu)
P4.01
For high temperature systems, this parameter allows you to set the hysteresis value used by the adjustment board for calculating the switching off delivery temperature of the burner:
SWITCHING OFF TEMPERATURE = HEATING SETPOINT + P4.01.
The factory setting for this parameter is 5°C, it can be changed within the
2 - 10°C range.
P4.02
For high temperature systems, this parameter allows you to set the hysteresis value used by the adjustment board for calculating the ignition delivery temperature of the burner:
IGNITION TEMPERATURE = HEATING SETPOINT - P4.02.
The factory setting for this parameter is 5°C, it can be changed within the
2 - 10°C range.
P4.03
For low temperature systems, this parameter allows you to set the hysteresis value used by the adjustment board for calculating the switching off delivery temperature of the burner:
SWITCHING OFF TEMPERATURE = HEATING SETPOINT + P4.03.
The factory setting for this parameter is 3°C, it can be changed within the
2 - 10°C range.
P4.04
For low temperature systems, this parameter allows you to set the hysteresis value used by the adjustment board for calculating the ignition delivery temperature of the burner:
IGNITION TEMPERATURE = HEATING SETPOINT - P4.04.
The factory setting for this parameter is 3°C, it can be changed within the
2 - 10°C range.
P4.05
Not used on this model.
P4.08
This parameter allows you to set the boiler for cascade applications via an
OTBus signal. Not applicable to this model of boiler.
P4.09
This parameter allows you to activate the screed heater function (see “5.8.11
Screed heating function” for more details). The factory setting is 0, with the boiler set to OFF, set to 1 to activate the screed heater function on the low temperature heating zones. The parameter automatically returns to 0 once the screed heater function is finished, it is possible to interrupt it earlier by setting the value to 0.
26
P4.10
This parameter allows you to change the FORCED HEATING TIMING OFF, regarding the delay time introduced for re-igniting the burner in the face of an off due to the heating temperature being reached. The factory setting for this parameter is 3 minutes and can be set to a value between 0 min and 20 min.
P4.11
This parameter allows you to cancel the ANTI CYCLE and REDUCED
HEATING MAXIMUM OUTPUT TIMING, lasting 15 min during which the speed of the fan is limited to 75% of the maximum heating output that has been set. The factory setting for this parameter is 0, set 1 to reset the timings.
P4.12
This parameter allows you to configure the system to manage a mixing valve and an additional pump on the main heating system (the use of the BE16 accessory board is required, not supplied as standard). The factory setting for this parameter is 0, set to 1 for the connection of a BE16 board.
Note: this parameter cannot be changed when an OTBus chronothermostat is connected.
P4.13
When P4.12 = 1, this parameter allows you to set the address of the BE16 board.
The factory setting for this parameter is 3 and can be set within the 1 - 6 range.
Note: see the instruction sheet of the BE16 accessory board for more information about the use of this parameter.
P4.14
When P4.12 = 1, this parameter allows you to set the hydraulic configuration of the main heating zone. The factory setting for this parameter is 0 and allows a direct zone to be managed, set the parameter to 1 for the management of a mixed zone.
Note: see the instruction sheet of the BE16 accessory board for more information about the use of this parameter.
P4.15
This parameter allows you to specify the type of zone to be heated, it is possible to choose from the following options:
0 = HIGH TEMPERATURE (factory setting)
1 = LOW TEMPERATURE
P4.16
This parameter allows you to specify the maxi heating setpoint that can be set:
- range 20°C - 80.5°C, default 80.5°C for high temperature systems
- range 20°C - 45°C, default 45°C for low temperature systems.
Note: the P4.16 value cannot be less than P4.17.
P4.17
This parameter allows you to specify the mini heating setpoint that can be set:
- range 20°C - 80.5°C, default 40°C for high temperature systems
- range 20°C - 45°C, default 20°C for low temperature systems.
Note: the P4.17 value cannot be greater than P4.16.
P4.18
This parameter allows you to activate the thermoregulation when the system has an outdoor temperature probe connected. The factory setting is 0, the boiler always operates at a fixed point. With the parameter on 1 and an outdoor temperature probe connected, the boiler operates in thermoregulation. With an outdoor temperature probe disconnected the boiler always operates at a fixed point.
See “8.12 Setting the thermoregulation” for more details.
P4.19
This parameter allows you to set the number of the compensation curve used by the boiler when in thermoregulation. The factory setting for this parameter is 2.0 for high temperature systems and 0.5 for low temperature ones. The parameter can be set with the range 1.0 - 3.0 for high temperature systems, 0.2 - 0.8 for low temperature ones. See “8.12 Setting the thermoregulation” for more details.
P4.20
With this parameter you activate the “night compensation” function. The default value is 0, set to 1 to activate the function. See “8.12 Setting the thermoregulation” for more details.
P4.21
Set to 1 to enable or 0 to disable (factory default setting is 0)
P4.22
Set to 1 to enable or 0 to disable (factory default setting is 0)
P4.23
This parameter allows you to activate the management of an additional heating zone (the use of the BE16 accessory board is required, not supplied as standard). The default value is 0, set to 1 to activate the function. Note: this parameter cannot be changed when an OTBus chronothermostat is connected.
P4.24
When P4.23 = 1, this parameter allows you to set the address of the BE16 board of zone 1. The factory setting is 1 and can be set within the 1 - 6 range.
Note: see the instruction sheet of the BE16 accessory board for more information about the use of this parameter.
P4.25
When P4.12 = 1, this parameter allows you to set the hydraulic configuration of heating zone 1. The factory setting for this parameter is 0 and allows you to manage a direct zone, set to 1 to manage a mixed zone.
Note: see the instruction sheet of the BE16 accessory board for more information about the use of this parameter.
P4.26
When P4.12 = 1 this parameter allows you to specify the type of zone to be heated. I t is possible to choose from the following options:
0 = HIGH TEMPERATURE (factory setting)
1 = LOW TEMPERATURE
P4.27
When P4.12 = 1, this parameter allows you to the setpoint value of heating zone 1. The factory setting for this parameter is P4.28 and can be programmed within the P4.29 and P4.28 range.
P4.28
This parameter allows you to specify the maximum heating setpoint that can be set for zone 1:
- range 20°C - 80.5°C, default 80.5°C for high temperature systems
- range 20°C - 45°C, default 45°C for low temperature systems.
Note: the P4.28 value cannot be less than P4.29.
P4.29
This parameter allows you to specify the minimum heating setpoint that can be set for zone 1:
- range 20°C - 80.5°C, default 40°C for high temperature systems
- range 20°C - 45°C, default 20°C for low temperature systems
Note: the P4.29 value cannot be greater than P4.28.
P4.30
This parameter allows you to activate thermoregulation mode for zone 1 when the system has an outdoor temperature sensor connected. The factory setting is
0, the boiler always operates for zone 1 at a fixed point; to have the boiler work in climate mode connect an outdoor temperature sensor and set the parameter to
1, connect an outdoor temperature sensor. With an outdoor temperature probe disconnected the boiler always operates at a fixed point.
See “8.12 Setting the thermoregulation” for more details.
P4.31
This parameter allows you to set the number of the compensation curve for zone 1 used by the boiler when in climatic mode. The factory setting for this parameter is 2.0 for high temperature systems and 0.5 for low temperature ones. The parameter can be set with the range 1.0 - 3.0 for high temperature systems, 0.2 - 0.8 for low temperature ones. See “8.12 Setting the thermoregulation” for more details.
P4.32
This parameter allows you to activate "night compensation" for zone 1.
The default value is 0, set to 1 to activate the function.
See “8.12 Setting the thermoregulation” for more details.
P5 (DHW menu)
P5.11
This parameter allows you to activate the following functions related to the operation of the boiler in domestic hot water mode:
0 = no function; the boiler in domestic hot water mode starts immediately and uses the related domestic hot water thermostats, i.e. it switches off at setpoint +5°C and switches back on at setpoint +4°C (factory setting)
3 = the boiler uses absolute domestic hot water thermostats, i.e. in domestic hot water mode it always switches off at 65°C and switches back on at
63°C, independently of the domestic hot water setpoint that has been set
P7 (SERVICE MENU)
P7.06
This parameter is factory set to 0. Contact Vokera Technical for further advice.
P7.07
Contact Vokera Technical for further advice.
P8 (CONNECTIVITY menu)
P8.01
This parameter is used to manage the boiler remotely. Three values are available for this parameter:
0 = FACTORY SET VALUE. The boiler interface is in function, the remote control via ModBus is enabled
1 = The boiler interface is in function, the remote control via ModBus is disabled
2 = The boiler interface isn't in function, the remote control via ModBus is enabled via REC10H. Only the MENU button is enable to modify
P8.01 parameter.
P8.03
This parameter is used to enable remote boiler management using an Open-
Term device:
0 = With the OT+ function disabled, you cannot control the boiler remotely using an OT+ device. If this parameter is set to 0, any OT+ connection is instantly interrupted, and the icon and “OTB” message on the display are switched off
1 = FACTORY-SET VALUE. With the OT+ function enabled, you can connect an OT+ device to control the boiler remotely. When you connect an OT+ device to the boiler, the icon lights up on the display and “OTB” appears.
27
5.6 FIRST COMMISSIONING
Ensure that steps 6.1 through to 6.6 have been completed before supplying the gas and electrical supply to the appliance.
Position the system’s master switch to the “on” position.
Open the gas tap to allow fuel to flow.
When there is a heat request and the boiler is igniting, the icon appears on the display.
Heating REQUEST, the radiator icon blinks:
Bar
With power on the backlight comes on, then all the icons and the segments come on for 1sec and in sequence the firmware revision is displayed for 3sec:
5.8.2 SUMMER MODE
Set the boiler to the SUMMER status by pressing key 1 until the domestic hot water icon is displayed.
Then the interface displays the status active at that moment.
5.7 VENT CYCLE
b
Each time that the boiler is powered, an automatic vent cycle is carried out lasting 4 min. When the air purging cycle is in progress all heat requests are inhibited except those for domestic hot water when the boiler is not set to OFF and -AIR is displayed on the interface screen.
In this status the boiler activates the traditional function of just domestic hot water, the interface normally displays the delivery temperature. In the event of a domestic hot water pick up, the display shows the temperature of the domestic hot water.
Domestic hot water REQUEST, the tap icon blinks:
DAY
The purge cycle can be interrupted early by keeping key 2
(the icon RESET comes on). The purge cycle can also be interrupted, if the boiler is not set to OFF, by a domestic hot water request.
Adjust the ambient temperature thermostat to the desired temperature (~20°C) or, if the system is equipped with a programmable thermostat or timer, ensure that the thermostat or timer is “active” and set correctly (~20°C).
Then set the boiler on WINTER or SUMMER depending on the type of operation desired.
The boiler will start up and continue working until the set temperatures are reached, after which it will then go back to standby.
5.8 OPERATING STATUS
For changing the operating status from WINTER to SUMMER to OFF press key 1 until the icon for the desired function is displayed.
5.8.1 WINTER MODE
Set the boiler to the WINTER status by pressing key 1 until both the domestic hot water icon and the heating icon are displayed.
5.8.3 OFF
Set the boiler to the OFF status by pressing key 1 until the central segments are displayed.
5.8.4 ADJUSTING THE HEATING WATER
TEMPERATURE WITHOUT AN OUTDOOR
TEMPERATURE SENSOR CONNECTED
If there is no outdoor temperature sensor the boiler operates at a fixed point, the HEATING setpoint in this case can be set on the main page of the screen. Pressing the key C or D displays the current heating setpoint; the value blinks with a frequency of 0.5 sec ON, 0.5 sec OFF and the icons and
come on.
+ +
C
D
RESET MENU
The interface normally displays the delivery temperature unless there is a domestic hot water request in progress, in which case the domestic hot water temperature is displayed.
28
The successive pressing of the key C or D allows you to set the value of the heating setpoint within the preset range:
[40°C - 80.5°C] for high temperature systems
[20°C - 45 °C] for low temperature systems with steps of 0.5°C.
The level bars beside the heating icon show the setpoint value set with respect to the operating range:
- four bars on = max setpoint
- one bar on = min setpoint
5.8.7 SAFETY STOP
If there are ignition faults or boiler operation malfunctions, carry out a “SAFETY STOP”. On the display, in addition to the fault code, the icon is also displayed, which blinks with a frequency of 0.5sec ON and 0.5sec OFF.
The backlight blinks for 1min after which it switches off, while the icon continues blinking.
On the 4 digits a message scrolls containing the error code and its description.
Keeping one of the two keys C or B pressed for longer, the meter increases the speed of advancement modifying the set value. If no key is pressed for 5sec, the value set is taken as the new heating setpoint and the display returns to the main page.
DAY
5.8.5 ADJUSTING THE HEATING WATER
TEMPERATURE WITH AN OUTDOOR
TEMPERATURE SENSOR CONNECTED
If an outdoor temperature sensor is installed and thermoregulation is enabled (parameter P4.18 = 1), the delivery temperature is automatically selected by the system, which quickly adjusts the ambient temperature according to the variations in the outdoor temperature. If you want to change the temperature, raising it or lowering it with respect to the temperature automatically calculated by the electronic board, it is possible to change the HEATING setpoint as follows: press the keys C or D and select the desired level of comfort within the range (-5 - +5) (see paragraph 8.12).
5.8.8 RESET FUNCTION
The RESET icon comes on when there is an alarm that requires a manual reset by the user (for example flame lockout). To reset press key 2 RESET.
DAY
RESET
If the release attempts do not restart the boiler, contact your local Technical Assistance Centre.
5.8.9 DOMESTIC HOT WATER COMFORT FUNCTION
Pressing the keys A+B for at least 2sec gives you access to the domestic hot water comfort functions. COFF is shown on the display and the icons , , and com e on:
Note: if an outdoor temperature sensor is connected it is in any event possible to have the boiler operate at a fixed point by setting the parameter P4.18 = 0 (menu P4).
5.8.6 ADJUSTING THE DOMESTIC HOT WATER
TEMPERATU RE
On the main screen, pressing the key A rather than B displays the current domestic hot water setpoint, the value blinks with a frequency of 0.5 sec ON, 0.5 sec OFF and the icons and
come on.
A
B
+
RESET MENU
The successive pressing of the keys A or B allows you to set the value of the domestic hot water setpoint raising or lowering the value within the preset range in steps of 0.5°C.
The level bars beside the heating icon show the setpoint value set with respect to th e operating range:
- four bars on = max setpoint
- one bar on = min setpoint
+
Using the keys , you can scroll through the options in sequence CSTD and then COFF again. Using the key activates the desired function and you exit the menu returning to the initial screen. A scrolling message appears on the display with the following mode:
Function
CSTD
COFF
Scrolling message
COMFORT STANDARD
COMFORT OFF
CSTD (PREHEATING FUNCTION)
By setting CSTD, the domestic hot water preheating function of the boiler activates. This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made. When the preheating function is enabled the scrolling message PREHEATING FUNCTION
IN PROGRESS is displayed. To deactivate the preheating function set COFF. The function is not active when the boiler is OFF.
29
5.8.10 SPECIAL DOMESTIC HOT WATER FUNCTIONS
The boiler has special functions more a more efficient management of the domestic hot water when there a high domestic hot water temperature input. By programming the P5.11 parameter it is possible to activate the following function, for more information about setting the parameter see the relative paragraph “5.5 Boiler configuration”.
- Absolute thermostats domestic hot water function: normally the boiler in domestic hot water mode switches on and off based on thermostats related to the value of the domestic hot water setpoint (off at setpoint + 5°C and switching back on at setpoint + 4°C). Activating this function the boiler will switch on ad off based on thermostats independent of the domestic hot water setpoint (off at setpoint + 65°C and switching back on at 63°C).
5.8.11 SCREED HEATING FUNCTION
For a low temperature system the boiler has a “screed heating” function that can be activated in the following way:
set the boiler to OFF by pressing button 1
access the technical parameters menu, as indicated in the paragraph “ 5.1 Access to the parameters”
select the P4 menu and then P4.09 with the keys , , confirming the selection with .
(Note: SCREED HEATING is not available if the boiler is a status other than OFF).
To activate the function set the parameter to 1, to deactivate it set the parameter to 0.
The “SCREED HEATING” function lasts 168 hours (7 days) during which, in the zones configured as low temperature, a heating request is simulated with an initial zone outlet of 20°C, then increased in line with the table on the side.
Accessing the INFO menu from the main page of the interface it is possible to display the I0.01 value regarding the number of hours that have passed since the activation of the function.
Once activated, the function takes priority, if the machine is shut down by disconnecting the power supply, when it is restarted the function picks up from where it was interrupted.
The function can be interrupted before it has finished by setting the boiler to a status other than OFF or by selecting
P4.09 = 0 from the menu P4.
Note: The temperature and increase values can be set to different values only by qualified personnel, only if strictly necessary. The manufacturer declines all responsibility if the parameters are incorrectly set.
DAY
1
2
5
6
3
4
7
18
0
12
0
TIME
0
6
12
0
0
0
0
TEMPERATURE
20°C
22°C
24°C
26°C
28°C
30°C
32°C
35°C
35°C
30°C
25°C
30
6 COMMISSIONING
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
6.1 GAS SUPPLY INSTALLATION
Inspect the entire installation including the gas meter, test for tightness and purge. Refer to BS 6891 (I.S. 813 in ROI) for specific instruction.
6.2 THE HEATING SYSTEM
The appliance contains components that may become damaged or rendered inoperable by oils and/or debris that are residual from the installation of the system, consequently it is essential that the system be flushed in accordance with the following instructions.
6.3 HOW TO FILL THE CONDENSATE TRAP
The first time you turn the boiler on after a prolonged period of inactivity or for maintenance work, before using the appliance you must fill the siphon with water and make sure that the condensation is evacuated correctly.
Fill the condensation collection siphon pouring 1 litre of water into the boiler combustion-analysis outlet with the boiler off, and check that:
- the safety cut-off device is floating
- water is flowing correctly from the discharge pipe out of the boiler
- the condensate outlet connection line is watertight.
If the condensate outlet circuit (siphon and pipes) is working correctly, the condensation level will not exceed the maximum.
Filling the siphon before using the appliance, and the use of a safety cut-off device inside the siphon, prevent exhaust gases from being released into the environment.
Repeat during standard and non-standard maintenance work.
MAX
Fig. 28
6.4 INITIAL FILLING OF THE SYSTEM
Ensure both flow and return service valves are open, remove appliance casing as described in 4.5, identify the automatic air release valves (AAV) and loosen the dust cap/s by turning the cap anti-clockwise one full turn. Ensure all manual air release valves located on the heating system are closed. Connect the filling loop as shown in Fig. 10, slowly proceed to fill the system by firstly opening the inlet valve connected to the flow pipe, and then turning the lever on the fill valve, to the open position. As water enters the system the pressure will begin to rise. Once the gauge has reached 1 bar close both valves and begin venting all manual air release valves, starting at the lowest first. It may be necessary to go back and top-up the pressure until the entire system has been filled. Inspect the system for water tightness, rectifying any leaks.
6.4.1 AUTO AIR VENT (AAV)
When the boiler has been filled for the first time or the system has been drained and refilled, it will be necessary to release any air that may have become trapped within the appliance heat exchanger. Slacken the bleed screw until water is released and then close.
AIR
VENT
VALVE
6.5 INITIAL FLUSHING OF THE SYSTEM
The whole of the heating system must be flushed both cold and hot as detailed in 6.9. Open all radiator or heating valves and the appliance flow & return service valve. Drain the boiler and system from the lowest points. Open the drain valve full bore to remove any installation debris from the boiler prior to lighting. Refill the boiler and heating system as described in 6.4.
6.6 PRE-OPERATION CHECKS
Before attempting the initial lighting of the appliance, the following checks must b e carried out:
• ensure all gas service valves from the meter to the appliance are open and the supply pipe has been properly purged;
• ensure the proper electrical checks have been carried out, (see
8.6) particularly continuity, polarity and resistance to earth;
• ensure the 3 AMP fuse – supplied with the appliance – has been fitted;
• ensure the system has been filled, vented and the pressure set to 1 bar;
• ensure the flue system has been fitted properly and in accord ance with the instructions;
• ensure all appliance service valves are open.
6.7 INITIAL LIGHTING
Ensure the electrical supply to the appliance is switched on.
Ensure any external controls are switched to an ‘ON’ position and are calling for heat. Pressing button 1 the appliance will now operate as described in 2.2. Should the appliance fail to ignite, refer to 6.7 and/or section 8 (mode of operation & fault finding).
The appliance is factory set so should require no additional adjustment once installed. However to satisfy the requirements of GSIUR 26/9 (I.S. 813 ROI), it will be necessary to gas rate the appliance using the gas meter that serves the appliance and carry out a combustion analysis check in accordance with BS 7967 (UK) to ensure that correct combustion is occurring, see flow chart on page 47.
Additionally, if the gas valve has been adjusted, replaced, or the appliance has been converted for use with another gas type, then it becomes necessary to carry out a combustion analysis check to ensure that correct combustion is occurring.
If there are no means to carry out a combustion analysis check, then it will not be possible to complete the commissioning procedure.
Details on how to carry out the combustion analysis can be found in section 8.
IMPORTANT
It’s imperative that a sufficient dynamic – gas – pressure is maintained at all times. Should the dynamic gas pressure fall below an acceptable level, the appliance may malfunction or sustain damage.
6.9 FINAL FLUSHING OF THE HEATING
SYSTEM
The system shall be flushed in accordance with BS 7593 (I.S.
813 ROI). Should a cleanser be used, it must be suitable for
Aluminium heat exchangers. It shall be from a reputable manufacturer and shall be administered in strict accordance with the manufacturers’ instructions and the DWTA code of practice.
NOTE
Chemicals used to cleanse the system and/or inhibit corrosion must be pH neutral, i.e. they should ensure that the level of the pH in the system water remains neutral. Premature failure of certain components can occur if the level of pH in the system water is out-with normal levels.
6.9.1 INHIBITORS
See Section 3 GENERAL REQUIREMENTS (UK).
6.10 SETTING THE FLOW OUTLET TEMPERATURE
The flow outlet temperature can be adjusted between 40 °C - 80
°C for standard CH system by using the buttons C & D (Fig. 1).
Fig. 29
31
SETTING THE DHW OUTLET TEMPERATURE
The DHW outlet temperature can be adjusted between 37 °C
- 60 °C via the buttons A & B (Fig. 1).
6.11 SETTING THE SYSTEM DESIGN
PRESSURE
The design pressure should be a minimum of 0.5 bar and a maximum of 1.5 bar. The actual reading should ideally be 1bar plus the equivalent height in metres (0.1 bar = 1 metre) to the highest point in the system above the base of the appliance (up to the maximum of 1.5 bar total). N.B.
The safety valve is set to lift at 3 bar/30 metres/45 psig. To lower the system pressure to the required value, drain off some water from the appliance drain valve until the pressure is correct.
6.12 REGULATING THE CENTRAL HEATING
SYSTEM
Fully open all radiator and circuit valves and run the appliance for both heating and hot water until heated water is circulating.
If conditions are warm remove any thermostatic heads. Adjust radiator return valves and any branch circuit return valves until the individual return temperatures are correct and are approximately equal.
6.12.1 5.11.1 REGULATING THE DHW FLOW-RATE
The appliance is fitted with a flow rate restrictor that limits the maximum flow rate that can be drawn through the appliance.
The restrictor eliminates the need to manually adjust the DHW flow rate. However if it is felt necessary to further increase or decrease the available flow rate, spare restrictors are available from Vokèra spare parts.
The spare flow rate restrictors can be fitted to either increase or decrease the maximum flow rate.
6.12.2 FLOW-RATE RESTRICTOR
The boiler is supplied with the following flow restrictor.
VISION PLUS 25C: 8 - litres flow restrictor
VISION PLUS 30C: 11 - litres flow restrictor
6.13 FINAL CHECKS
• ENSURE ALL TEST NIPPLES ON THE APPLIANCE GAS
VALVE ARE TIGHT AND CHECKED FOR TIGHTNESS.
• ENSURE THE APPLIANCE FLUE SYSTEM IS FITTED
CORRECTLY AND IS PROPERLY SECURED.
• ENSURE ALL PIPE WORK IS RE-CHECKED FOR TIGHT-
NESS.
• RE-FIT APPLIANCE CASING.
• COMPLETE BENCHMARK CHECKLIST.
FOR UK ONLY
Complete details of the boiler, controls, installation and commissioning in the Benchmark checklist at the back of this book. It is important that the Benchmark checklist is correctly completed and handed to the user. Failure to install and commission the appliance to the manufacturers instructions will invalidate the warranty.
6.14 INSTRUCTING THE USER
Hand over all documentation supplied with this appliance – including these instructions – and explain the importance of keeping them in a safe place.
Explain to the user how to isolate the appliance from the gas, water and electricity supplies and the locations of all drain points. Show the user how to operate the appliance and any associated controls correctly.
Show the user the location of the filling valve and how to topup the system pressure correctly and show the location of all manual air release points.
Explain to the user how to turn off the appliance for both long and short periods and advise on the necessary precautions to prevent frost damage.
Explain to the user that for continued safe and efficient operation, the appliance must be serviced annually by a competent person.
IMPORTANT
To validate the appliance warranty, it’s necessary to register the appliance details with us. The warranty can be registered in several ways:
• online at: www.vokera.co.uk (UK) or www.vokera.ie (Ireland)
• for UK residents by calling: 0800 479 0754
• for ROI residents by calling: 056 7755 055
7 SERVICING INSTRUCTIONS
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
7.1 GENERAL
Once the appliance has been serviced, the benchmark Service
Record must be completed.
For UK only: It is important that the Benchmark Service Record is correctly completed and handed to the user. Failure to install and commission the appliance to the manufacturers instructions will invalidate the warranty.
To ensure the continued safe and efficient operation of the ap pliance, it is recommended that it is checked and serviced at regular intervals. To ensure correct and safe operation of the appliance, it is essential that any worn or failed component be replaced only with a genuine Vokèra spare part . It should be remembered that although certain generic components may look similar, they will be specific to an individual appliance or product range. Use of non-genuine Vokèra spare parts could invalidate your warranty and may pose a potential safety hazard. The frequency of servicing will depend upon the particular installation conditions, but in general, once per year should be sufficient. It is the law that any servicing work is carried out by competent person such as a Vokèra engineer, an approved service agent, British Gas, GAS SAFE registered personnel or other suitably qualified personnel. The following instruc tions apply to the appliance and its controls, but it should be remembered that the central heating and the domestic hot water systems would also require attention from time to time.
7.2 ROUTINE ANNUAL SERVICING
• Check the operation of the appliance and ensure it functions as described in section 8.
• Compare the performance of the appliance with its design specification. The cause of any noticeable deterioration should be identified and rectified without delay.
• Thoroughly inspect the appliance for signs of damage or deterioration especially the flue system and the electrical apparatus.
• Check and adjust – if necessary – all burner pressure settings
(see 8.3).
• Check and adjust – if necessary – the system design pressure (see 6.11).
• Carry out an analysis of the flue gases (see 8.3), and visually check the condition of the entire flue assembly.
• Compare the results with the appliance design specification.
Any deterioration in performance must be identified and recti fied without delay.
• Check that the main heat exchanger is clean and free from any debris or obstruction.
• Check and clean – if necessary – the condense trap to ensure correct operation.
The flame side of the burner is made of state-of-the-art material.
Being fragile:
- be particularly careful when handling, mounting or dismantling the burner and adjacent components (e.g. electrodes, insulation panelling etc.) aspirators, blowers, etc.).
This component does not need any maintenance, please do not remove it from its housing, except where the O-ring may have to be replaced.
The manufacturer declines all responsibility in cases of damages due to failing to observe the above.
32
7.3 REPLACEMENT OF COMPONENTS
Although it is anticipated that this appliance will give years of reliable, trouble free service, the life span of components will be determined by factors such as operating conditions and usage.
Should the appliance develop a fault, the fault finding section will assist in determining which component is malfunctioning.
7.4 COMPONENT REMOVAL PROCEDURE
To remove a component, access to the interior of the appliance is essential. Isolate the appliance from the electrical supply and remove the fuse. And when necessary, close all service valves on the appliance, remove the appliance casing as described in section 4.5 and drain the water content from the appliance via the drain valve. Ensure some water absorbent cloths are available to catch any residual water that may drip from the appliance or removed component. Undertake a complete commissioning check as detailed in section 6, after replacing any component. ALWAYS TEST FOR GAS TIGHTNESS IF ANY
GAS CARRYING COMPONENTS HAVE BEEN REMOVED
Fig. 30
7.5 FRONT COVER REMOVAL
(FIG. 30)
Locate the 4 screws and remove the front cover.
7.6 PUMP ASSEMBLY
(FIG. 31)
Carry out component removal procedure as described in 7.4.
Disconnect and remove the pump outlet pipe ( A ) from the pump assembly/combustion chamber connection.
Remove the expansion pipe locking pin ( B ) from the top of the pump assembly and withdraw the flexible pipe. Disconnect the electrical wiring from the pump’s electrical connection point ( D ).
Locate and remove the 2 securing screws ( pump assembly. Remove locking pin ( F
E ) at the rear of the
) from pump base and lift pump assembly clear of the hydraulic manifold. The pump assembly can now be removed from the appliance. Replace carefully in the reverse order.
7.7 SAFETY VALVE
(FIG. 32)
Carry out component removal procedure as described in 7.4.
Disconnect the outlet pipe ( H ) from the safety valve, remove safety valve locking pin ( G ) from the hydraulic manifold. Replace in the reverse order.
7.8 LOWER AUTOMATIC AIR RELEASE
(FIG. 31)
Carry out component removal procedure as described in 7.4.
Remove the expansion pipe locking pin ( B ) from the pump assembly and remove the expansion pipe. Locate and remove the AAV locking pin ( the AAV assembly ( J
) from the pump assembly and remove
). Replace in the reverse order.
7.9 WATER PRESSURE TRANSDUCER
(FIG.
33)
Carry out component removal procedure as described in 7.4.
Locate and remove the locking pin ( M ) from the water pressure transducer ( N ). Remove the wiring. Carefully withdraw the transducer. Replace in the reverse order.
7.10 FLOW THERMISTOR
(FIG. 4 - POS. 21)
Carry out component removal procedure as described in 7.4.
Unclip and remove the air chamber front cover. Unclip the flow thermistor from the flow outlet pipe. Disconnect thermistor electrical plug. Replace in the reverse order.
7.11 RETURN THERMISTOR
(FIG. 4 - POS. 23)
Carry out component removal procedure as described in 7.4.
Unclip the return thermistor from the return inlet pipe. Disconnect thermistor electrical plug. Replace in the reverse order.
7.12 PRINTED CIRCUIT BOARD
(FIG. 34)
Carry out component removal procedure as described in 7.4.
Pull the control fascia forward and lower it. Push the clips ( O ) which secure the PCB cover, remove cover, after carefully taking note of all wiring connections and jumper tag configuration.
Unhook and remove connection block ( P ). Disconnect all wiring
Fig. 31
Fig. 32
Fig. 33
Fig. 34
G
H
J2
I2
O
M
A
D
F
N
P
J
B
I
E
33
from the PCB, locate and remove the PCB securing screws, remove the required PCB.
Replace in the reverse order ensuring that the position of the
2 control knobs are correctly aligned with the respective potentiometers on the PCB.
Ensure that the correct jumper tag configuration has been re spected. It will be necessary to check the functioning of the PCB is set for the correct boiler type/application. Also refer to 7.23.
7.13 GAS VALVE
(FIG. 35)
Carry out component removal procedure as described in 7.4.
The gas valve must be changed as complete unit. Disconnect the electrical plug and leads from the gas valve, slacken and unscrew gas valve inlet and outlet connections. Please note, the sealing washers ( Q ) must be discarded and replaced with new sealing washers. Unscrew gas pipe connections ( S-T ), the gas valve can now be removed. Replace in the reverse order.
Check and adjust burner pressure settings.
WARNING, A GAS TIGHTNESS CHECK MUST BE CAR-
RIED OUT.
7.13.1 INJECTOR ( FIG. 35 )
Carry out component removal procedure as described in 7.4.
Unscrew and remove gas pipe connections ( S-T ). Locate and remove the injector ( U ) inside the valve. Replace in the reverse order. Check and adjust burner pressure settings.
WARNING, A GAS TIGHTNESS CHECK MUST BE CAR-
RIED OUT.
7.14 ELECTRODES
(FIG. 36 - FIG. 37)
Carry out component removal procedure as described in 7.4.
Remove the air chamber front cover. Disconnect the electrode leads and ancillary wiring from their respective connectors. Remove the retaining screws ( V ) for electrode. Remove the spark ignition electrode ( W ). Remove the flame sensor electrod ( Y ).
7.15 FLUE FAN & MIXER
(FIG. 37 - FIG. 38)
Carry out component removal procedure as described in 7.4.
Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( A1 ) and swing/rotate the gas pipe away from the fan assembly ( B1 ), (if necessary unscrew the gas pipe from the gas valve G1 ). Locate and slacken the silencer
( H1 ). Locate and remove the sense electrode. To remove the fan ( E1 ), disconnect the electrical connections attached to the fan, locate and remove the four screws ( F1 ). Gently ease the fan from its location. Replace in the reverse order. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.
7.16 BURNER
(FIG. 37)
Carry out component removal procedure as described in 7.4.
Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( A1 ) and swing/rotate the gas pipe away from the fan assembly ( B1 ), (if necessary unscrew the gas pipe from the gas valve G1 ). Locate and slacken the silencer
( H1 ), disconnect the electrical connections attached to the fan. Disconnect the electrode leads and ancillary wiring from their respective connectors. Locate and remove the screws
( I1 ) which secure the burner assembly in position to the heat exchanger ( J1 ). Gently ease the fan assembly out of its location. Once the assembly has been removed, the burner ( K1 ) can be withdrawn from the heat engine. Ensure the seals ( L1 )
Fig. 35
Fig. 36
I1
E1
J1
T
V
Y
W
H1
F1
W
L1
K1
L1
V
Y
S
Q
U
Q
Fig. 37
34
are in good condition, taking care to.
7.17 MAIN HEAT EXCHANGER
(FIG. 38)
Carry out component removal procedure as described in 7.4.
Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( A1 ) and swing/rotate the gas pipe away from the fan assembly ( B1 ), (if necessary unscrew the gas pipe from the gas valve G1 ). Disconnect the electrical connections attached to the fan. Disconnect the electrode leads and ancillary wiring from their respective connectors.
Disconnect the flow locking pin ( N1 ), return locking pin ( M1 ) on the heat exchanger. Locate and remove the 4-screws that secure the heat exchanger to the combustion chamber ( O1 ).
Move the heat exchanger and disconnect it from the flue collector
( P1 ). The heat exchanger can now be lifted up and withdrawn from the appliance.
Replace in the reverse order. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.
7.18 AUTOMATIC BY-PASS & DHW NON-
RETURN
(FIG. 39)
Carry out component removal procedure as described in 7.4.
Remove the locking pin ( Q1 ) that secures the cover ( R1 ) to the hydraulic manifold. Using a hooked piece of wire, carefully withdraw the by-pass cartridge ( S1 ) and/or DHW non-return cartridge ( T1 ). Ensure all seals are in good condition, taking care to ensure they are replaced correctly. Replace in the reverse order ensuring the cartridge is facing the correct way.
7.19 EXPANSION VESSEL REMOVAL
(FIG. 40)
Carry out component removal procedure as described in
7.4
. Disconnect the flexible expansion pipe from the vessel.
Unscrew the nut that secures the vessel to the lower frame.
Locate and remove the screw ( U1 ) that secures the vessel to the top. The expansion vessel can now be removed. Replace in the reverse order. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.
7.20 CONDENSE TRAP REMOVAL
(FIG. 41)
Carry out component removal procedure as described in 7.4.
Disconnect the the locking pin ( V1 ) that secures the trap to the air condense pipe. Disconnect the lower rubber condense pipe from the condense trap. Carefully remove the condense trap.
For cleaning unlock the upper and lower closing plug ( W1 ).
Replace in the reverse order.
NOTE
It is recommended that the syphon is primed with clean water after it has been removed for cleaning or before the appliance is commissioned. To prime the syphon, fill it to approximately
3/4 full before refitting it as detailed.
A1
B1
P1
Fig. 38
Q1
Fig. 39
Fig. 40
Warning: After maintenance work, fill the siphon, following the instructions in § 6.3 Fill the condensate trap.
G1
M1
J1
N1
S1
T1
R1
U1
O1
W1
V1
Fig. 41
35
7.21 FLUE COLLECTOR REMOVAL
(FIG. 42)
Carry out component removal procedure as described in 7.4.
Remove the air chamber front cover. Remove the heat exchanger as per 7.17. Locate and remove the screw ( Y1 ) that secures the flue gas analysis test point cover ( Z1 ). Disconnect the flues thermistor wiring connections. Locate and remove the 4 screws
( A2 ). Locate and remove the 2 screws ( A3 ). Gently ease the condensate collector ( A4 ) out off its location. Gently ease the flue collector out off its location. Replace in the reverse order.
7.21.1 DHW FLOW RESTRICTOR (FIG. 43)
Carry out the component removal procedure as described in 7.4.
Disconnect the cold water inlet pipe at the DHW flow switch
( B2 ). Using a small screwdriver, gently ease the flow restrictor
( C2 ) from its seating. Replace in the reverse order. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.
7.21.2 DHW FLOW SWITCH (FIG. 43)
Carry out component removal procedure as described in 7.4.
Remove the locking pin ( D2 ). Disconnect and remove the cold water inlet pipe from the DHW flow switch & DHW heat exchanger. Disconnect the wiring to the DHW flow switch.
Slacken and unscrew the inlet connection. Lift the DHW flow switch housing from its seating.
Replace in the reverse order ensuring that the housing is firmly inserted onto its seating. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.
7.21.3 VALVE ACTUATOR (FIG. 44)
Carry out component removal procedure as described in 7.4.
Disconnect the electrical plug from the actuator ( H2 ). Replace in the reverse order.
7.21.4 DHW THERMISTOR (FIG. 33)
Carry out component removal procedure as described in 7.4.
Locate and remove the thermistor locking pin ( I2 ). Gently ease the thermistor assembly ( J2 ) from the hydraulic manifold. Replace in the reverse order.
7.21.5 DIVERTER VALVE ASSEMBLY (FIG. 44)
Carry out component removal procedure as described in 7.4.
Remove the valve actuator as described in 7.21.3. Locate and remove the locking pin ( G2 ) that secures the valve housing cover to the hydraulic manifold. Gently prise the valve assembly from the manifold ( K2 ). Replace in the reverse order ensuring that the seating assembly is inserted properly. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.
7.22 REPLACING INTERFACE
Carry out component removal procedure as described in 7.4.
Remove the appliance PCB as detailed in 7.12. Locate and remove the securing screws that hold the interface to the control panel, and gently lift the interface away from the panel. Disconnect the 4-wire plug from the interface, noting it’s position.
Replace in the reverse order, ensuring that the interface is correctly located and engaged with the corresponding interface buttons (also refer to 7.23).
7.23 REPLACING PCB OR INTERFACE
When either the PCB or interface has been replaced, it may be necessary to re-programme the parameters of the appliance to suit the personalised settings, e.g. enable clock, appliance, type, etc. Check that the following parameters are matched to suit the needs of the specific installation/application.
P3.01
P3.02
P3.03
P3.06
P3.07
P3.08
P3.09
P3.10
Fig. 42
Fig. 43
Fig. 44
A3
A4
36
D2
K2
G2
Y1
Z1
H2
A2
C2
B2
8 CHECKS, ADJUSTMENTS AND FAULT FINDING
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
8.1 CHECKING APPLIANCE OPERATION
When carrying out any repairs or servicing to the appliance, the relevant commissioning procedure must be undertaken to ensure the continued safe operation of the appliance. Particular attention should be made to ensure gas tightness, water tightness and the electrical integrity of the appliance.
8.2 APPLIANCE MODES OF OPERATION
NOTE
There must be sufficient system water pressure (min. 0.5 bar) to ensure the water pressure switch is activated. If there is insufficient system pressure the pump and fan will be prevented from operating and the low-pressure fault code will be indicated.
8.2.1 MODE SELECTION IN THE OFF/RESET POSITION
When the mode selection is in the OFF/RESET position, the following functions are active.
Active functions :
• frost-protection system
• pump & actuator anti-block.
8.2.2 ON-BOARD FUNCTIONS
• CO FUNCTION: the CO function when activated, will allow the appliance to run at CH maximum, DHW maximum or minimum output whilst a combustion analysis check or a mechanical gas valve calibration is being carried out. Whilst the CO function is active, all other functions are disabled (minimum power operating period, anti-cycle, set-point, etc). Once enabled, the CO function will remain active for a 15-minute period, or until the function is manually deactivated
• FROST-PROTECTION: this function is only active when there are no requests for heating or HW. If the temperature drops below 5°C, the boiler will operate on minimum power until the temperature of the thermistors reaches 35°C for CH and 55°C for DHW. Thereafter the pump & fan will over-run for 30-seconds.
• ANTI-CYCLE FUNCTION: the anti-cycle function ensures the burner remains switched off for at least 3-minutes after the set-point hysterisis (set-point + 5-deg) for CH heat request.
• PUMP ANTI-BLOCK FUNCTION: when there has been no heating or HW request for 24-hours, the anti-block cycle is activated. The pump will be activated for a period of 30-seconds.
• ACTUATOR ANTI-BLOCK FUNCTION: when there has been no heating or HW request for 24-hours, the anti-block cycle is activated. The diverter valve actuator will motor briefly to the heating position, and then back to the DHW position. The pump will run briefly.
• DHW PRE-HEAT FUNCTION: when the DHW pre-heat function is enabled, the appliance will light periodically to maintain the temperature of the DHW heat exchanger. When the
DHW thermistor and the primary thermistor fall below 35°C and 55°C respectively, the boiler will fire on minimum +25% power until the primary thermistor exceeds 55°C. Thereafter the pump will over-run for a period of 30-seconds.
8.2.3 HEATING MODE
With the mode selection in the heating & hot water position and any additional controls (time clock, programmer, room thermostat, etc.) calling for heat, the appliance will operate in the heating mode. The pump and fan will be activated via the flow temperature sensor. When the fan is sensed to be operating correctly (tacho signal), the ignition sequence commences. Ignition is sensed by the electronic circuit to ensure flame stability at the burner. Once successful ignition has been achieved, the electronic circuitry increases the gas rate to 75% for a period of 15 minutes.
The speed of the fan and therefore the output of the boiler is determined by the temperature of the water sensed by the flow temperature sensor, consequently a high temperature at the flow sensor results in a lower fan speed.
As the water temperature increases, the temperature sensors
– located on the flow pipe of the boiler – reduce the fan speed via the electronic circuitry. Depending on the load, either the water temperature will continue to rise until the set point is achieved or the water temperature will fall whereby fan speed will increase relative to the output required. When the boiler has reached the set point (+ hysterisis), the burner will switch off. The built-in anti-cycle device prevents the burner from relighting for approximately 3-minutes. When the temperature of the flow sensor falls below the set point (- hysterisis), the burner will re-light.
NOTE
If the spark/sensing electrode does not sense ignition the appliance will re-attempt ignition a further 4-times then go to lockout.
When the set-point has been reached (the position of the heating temperature selector) as measured at the primary thermistor, the appliance will begin the modulation phase whereby the fan and gas valve will continuously modulate to maintain the set-point.
If the temperature continues to rise and exceeds the set-point by 5°C (hysterisis), the burner will shut down. A new ignition sequence will be enabled when the 3- minute anti-cycle has been performed and the temperature at the primary thermistor has dropped 5°C (hysterisis) below the set-point.
8.2.4 DHW MODE
With the selector switch in either the hot water only or heating
& hot water position, the appliance will operate in the hot water mode whenever a DHW outlet is opened. A flow rate exceeding
2-litres per minute will activate the DHW flow switch whereupon the pump and fan will be activated via the flow temperature sensor. When the fan is sensed to be operating correctly (tacho signal), the ignition sequence commences. Ignition is sensed by the electronic circuitry to ensure flame stability at the burner.
Once successful ignition has been achieved, the electronic circuit allows the gas rate to achieve the modulation value.
NOTE
When the request for heating and/or hot water has been satisfied, the appliance pump and fan may continue to circulate to dissipate any residual heat within the appliance.
ATTENTION
Gas type and appliance output must be set according to the specific appliance specification. Vokèra accepts no responsi bility if the gas type is not correctly adjusted according to the respective appliance specification as detailed on the appliance data badge.
8.3 CHECKING THE CO
THE GAS VALVE
2
AND ADJUSTING
THE GAS VALVE MUST BE SET-UP OR ADJUSTED WITH THE
AID OF A PROPERLY CALIBRATED FLUE GAS ANALYSER.
Isolate the appliance from the electrical supply and remove the appliance casing as described in 4.5.
Set the flue gas analyser to read CO2 and insert the probe into the flue analysis test point.
8.3.1 COMBUSTION CHECK
To carry out the combustion analysis, proceed as follows:
set the boiler to the OFF status by pressing button 1
Remove the screw and the cover on the air distribution box
( A-B, Fig. 45 ).
Insert the flue gases analysis probe.
37
Fig. 45
A
B
activate the combustion control function by pressing buttons 2+3 for at least 2sec
+ +
RESET MENU
2 3
the display shows the scrolling text CO and the icons ,
, and come on:
using the , keys it is possible to change the fan speed
set the max value (rpm) and confirm the choise with .
The display shows for 10 sec. the number of revs set, together with the rpm icon.
The boiler will function at max power.
Check on the analyser that the max CO 2 complies with what indicated in the table, if data are different proceed with the calibration of the gas valve - see paragraph “8.10
Gas valve calibration” .
CO 2 max
25 C
30 C
NATURAL GAS
(G20)
9,0
9,0
LPG
(G31)
10,5
10,5
%
%
Set the min value (rpm) and confirm the choise with .
The boiler will function at min power.
Check on the analyser that the min CO2 complies with what indicated in the table, if data are different proceed with the calibration of the gas valve - see paragraph “8.10
Gas valve calibration” .
CO 2 min
NATURAL GAS
(G20)
LPG
(G31)
25 C 9,5 10,5 %
30 C 9,5 10,5 %
By pressing button it is possible to stop function in advance.
When the checks are completed:
exit the function by pressing the button
remove the analyzer probe and close the combustion analysis sockets with the appropriate plugs and relative screw
replace and store the analysis probe adapter supplied with the boiler, in the documentation envelope
set the boiler in the desired operating mode according to the season
adjust the required temperature values according to customer requirements.
b
When the combustion analysis is in progress all heat requests are inhibited and a message is shown on the display.
IMPORTANT
The combustion analysis function is active for a maximum time of 15 minutes; the burner shuts down if an outlet temperature of 95° C is reached. It will ignite again when the temperature falls below 75° C.
b
With OTBus device connected it is not possible to activate the combustion control function. To perform flue gas analysis, disconnect the OTBus connection wires and wait 4 minutes, or disconnect the power supply and re-power the boiler.
b
The combustion analysis function is normally performed with the three-way valve positioned in heating mode. It is possible to switch the three ways to the DHW generating a request for domestic hot water at the maximum flow rate during the execution of the function itself. In this case, the domestic hot water temperature is limited to a maximum value of 65 ° C. Wait for the burner to ignite.
This procedure must be undertaken by qualified personnel.
8.4 CHECKING THE EXPANSION VESSEL
Carry out the component removal procedure as described in
7.4. You must ensure that the boiler is completely drained of water. Using a suitable pressure gauge, remove dust cap on expansion vessel and check the charge pressure. The correct charge pressure should be 1.0 bar ± 0.1 bar. If the charge pressure is less, use a suitable pump to increase the charge.
NOTE
You must ensure the drain valve is in the open position whilst re-charging takes place. Replace the dust cap and carry out the relevant commissioning procedure (section 6).
8.5 EXTERNAL FAULTS
Before carrying out any faultfinding or component replacement, ensure the fault is not attributable to any aspect of the installation.
8.5.1 INSTALLATION FAULTS
Symptom
No ignition
No hot water
No heating
Fault
Fault code
Possible cause
Check wiring/check electrical supply
Check pipe-work
Check external controls
Possible cause
Check gas supply, check flue system, check polarity
The display shows for 10 sec. the number of revs set, together with the rpm icon.
38
8.6 ELECTRICAL CHECKS
Any electrical checks must be carried out by a suitably qualified person.
8.6.1 EARTH CONTINUITY TEST
Isolate the appliance from the electrical supply, and using a suitable multi-meter carry out a resistance test. Connect test leads between an appliance earth point and the earth wire of the appliance supply cable. The resistance should be less than
1 OHM. If the resistance is greater than 1 OHM check all earth wires and connectors for continuity and integrity.
8.6.2 SHORT CIRCUIT CHECK
Isolate the appliance from the electrical supply, and using a suitable multi-meter, carry out a short circuit test between the
Live & Neutral connections at the appliance terminal strip.
Repeat above test on the Live & Earth connections at the appliance terminal strip.
NOTE
Should it be found that the fuse has failed but no fault is indicated, a detailed continuity check will be required to trace the fault. A visual inspection of components may also assist in locating the fault.
8.6.3 POLARITY CHECK
With the appliance connected to the electrical supply and using a suitable m ultimeter, carry out the following voltage tests:
• connect test leads between the Live & Neutral connections at the appliance terminal strip. The meter should read approximately
230V ac. If so proceed to next stage. If not, see 8.6.4.
• connect test leads between the Live & Earth connections at the appliance terminal strip. The meter should read approximately
230V ac. If so proceed to next stage. If not, see 8.6.4.
• connect test leads between the Neutral & Earth connections at the appliance terminal strip. The meter should read approximately 0 – 15Vac. If so polarity is correct. If not, see 8.6.4.
8.6.4 REVERSED POLARITY OR SUPPLY FAULT
Repeat the above tests at the appliance isolator, if testing reveals correct polarity and/or supply at the isolator, re-check wiring and connections between the isolator and the appliance. If tests on the isolator also reveal reversed polarity or a supply fault, consult the local electricity supplier for advice.
8.6.5 RESISTANCE TO EARTH CHECK
Isolate the appliance from the electrical supply, and using a suitable multi-meter carry out a resistance test. Connect test leads between the Live & Earth connections at the appliance terminal strip. If the meter reads other than infinity there is a fault that must be isolated, carry out a detailed continuity check to identify the location of the fault.
These series of checks must be carried out before attempting any faultfinding procedures on the appliance. On completion of any task that required the disconnection and re-connection of any electrical wiring or component, these checks must be repeated.
8.7 FAULT FINDING
Before attempting any fault finding, the electrical checks as detailed in 8.6 must be carried out. Isolate the appliance from the electrical supply.
Disconnect any external controls from terminal plug (CN5 - Fig.
48), and insert a link-wire between the two wires at the ‘TA’ connections.
NOTE
Restore the electrical supply to the boiler and turn the selector switch to the on position. The boiler should now function as described in section 8. Should the boiler fail to respond, the internal fuses and connectors should be checked to ensure integrity and continuity.
COMPONENT
Fan
Pump
Valve actuator
Ignition transformer
Gas valve
Room thermostat connection
NTC thermistor (dry contact)
NTC thermistor (wet contact)
FUNCTION
Standard Heating temperature range
(min – max °C)
DHW temperature range (min – max °C)
75% maximum CH time
Heating OFF hysterisis (°C)
Heating ON hysterisis (°C)
DHW OFF hysterisis (°C)
DHW ON hysterisis (°C)
Anti-cycle delay
Pump over-run
Low output (min. output + %)
CO function max temp. (°C)
CO re-light temp. (°C)
CO function time
Flow NTC max temp. (°C)
High limit thermostat (°C)
Flue NTC max temp. (°C)
Maximum differential (°C)
IGNITION CONTROL
Ignition attempts before L/O (lockout)
Re-ignition attempts after loss of flame signal
APPLIANCE STATUS AND FAULT CODES
When the boiler detects a temporary fault condition, the appropriate code is shown. If/when the fault is final a fault code will be displayed. See “8.13 Lights and faults”.
37 - 60
15 min
SP + 5
SP – 5
SP + 5
SP + 4
3-min
30-sec
Min+25
90
78
15-min
90
105
125
35
VALUE
5
5
VALUE
230Vac
230Vac
230Vac
230Vac
230Vac
24Vdc
10Kohm
10Kohm
VALUE
40 - 80
8.9 ADJUSTMENTS
The boiler has already been adjusted by the manufacturer, if, however, adjustments have to be made again, for example after extraordinary maintenance, after the gas valve has been replaced or after a gas conversion from natural gas to LPG, or vice versa, follow the procedures described in following.
The maximum and minimum power settings, maximum heating and slow ignition must be performed strictly in the sequence indicated and only by qualified personnel:
power the boiler
carry out the access procedure to the parameters as indicated in paragraph “5.1 Access to the parameters”
select menu P3 and confirm the selection with
display the desired parameter using the arrows - see table -
P3.06
min fan speed
P3.07
max fan speed
P3.08
soft ignition
P3.09
max CH fan speed
then enter the sub-menu by pressing
set the desired values with and , referring to the following tables table 1
MAX RPM FAN
SPEED
25C CH-DHW
30C CH-DHW
NATURAL GAS
(G20)
4.900 - 6.100
5.300 - 6.900
LPG
(G31)
4.900 - 6.100
5.200 - 6.700
rpm rpm
39
table 2
MIN RPM FAN
SPEED
25C
30C
NATURAL GAS
(G20)
1.400
1.400
LPG
(G31)
1.400
1.400
rpm rpm table 3
SOFT IGNITION
25C - 30C
NATURAL GAS
(G20)
4.000
LPG
(G31)
4.000
rpm
confirm values with Enter .
8.10 GAS VALVE CALIBRATION
Perform the CO2 verification procedure as indicated in paragraph “8.3.1 Combustion check”, if it is necessary to modify the values, proceed as follows:
turn clockwise on the maximum power adjustment screw to decrease the value
turn the minimum power adjustment screw clockwise to increase the value.
CO
2
+
Min power adjustment screw
CO
2
-
Max power adjustment screw
Fig. 46
After setting the desired output report the value in the table on the back cover of this manual, for future references.
HTG curve - VISION PLUS 25C
6400
Qm Qn
6000
5600
5200
4800
4400
4000
3600
3200
2800
2400
2000
1600
1200
4 5 6 7 8 9
RANGE RATED
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Portata termica (kW) heat output (kW)
Curva portata termica - giri ven � latore
HTG curve - VISION PLUS 30C
Qm Qn
4400
4000
3600
3200
2800
2400
2000
1600
1200
4
6400
6000
5600
5200
4800
5 6
RANGE RATED
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
8.11 RANGE RATED
This boiler can be adapted to the heating requirements of the system, in fact it is possible to set the maximum delivery for heating operation of the boiler itself:
power up the boiler
access the technical parameters menu, as indicated in the paragraph “ 5.1 Access to the parameters”
select the P3 menu and confirm the selection with
the display shows P3.10, enter the sub-menu by pressing
8.12 SETTING THE THERMOREGULATION
Enabling THERMOREGULATION occurs in the following way:
access the technical parameters menu, as indicated in the paragraph “ 5.1 Access to the parameters”
select the menu P4 and then P4.18 = 1.
set the maximum desired heating value (rpm) with the and keys, confirming the selection with Enter
once the required output has been set (maximum heating), put the value on the self-adhesive label on the back cover of this manual. For subsequent controls and adjustments, refer to the set value.
b
The calibration does not entail the ignition of the boiler.
The boiler is delivered with the adjustments shown in the technical data table.
Depending on plant engineering requirements or regional flue gas emission limits it is, however, possible to modify this value, referring to the following graphs.
40
Thermoregulation only works with the outdoor temperature sensor connected and active only for the HEATING function.
If P4.18 = 0 or outdoor temperature probe disconnected the boiler operates at a fixed point. The temperature measured by the outdoor temperature sensor is displayed in “8.15 INFO menu” under I0.09. The thermoregulation algorithm will not directly use the outdoor temperature, but rather a calculated outdoor temperature that takes into account the building’s insulation: in buildings that are well insulated, the outdoor temperature variations will have less impact than those that are poorly insulated by comparison.
REQUEST FROM OT CHRONOTHERMOSTAT
In this case the delivery setpoint is calculated by the chronothermostat according to the outdoor temperature value and the difference between the ambient temperature and the desired ambient temperature.
REQUEST FROM ROOM THERMOSTAT
In this case the delivery setpoint is calculated by the adjustment board according to the outdoor temperature value so as to obtain an estimated outdoor temperature of 20° (reference ambient temperature).
There are 2 parameters that compete to calculate the output setpoint:
slope of the compensation curve (KT)
offset on the reference ambient temperature.
SELECTING THE THERMOREGULATION CURVE (PARA-
METER P4.19)
The thermoregulation curve for heating maintains a theoretical temperature of 20°C indoors, when the outdoor temperature is between +20°C and -20°C. The choice of the curve depends on the minimum outdoor temperature envisaged (and therefore on the geographical location), and on the delivery temperature envisaged (and therefore on the type of system).
It is carefully calculated by the installer on the basis of the following formula:
KT = T. outlet envisaged - Tshift
20- min. design external T
Tshift = 30°C standard system
25°C floor installations
If the calculation produces an intermediate value between two curves, you are advised to choose the thermoregulation curve nearest the value obtained.
Example:
if the value obtained from the calculation is 1.3, this is between curve 1 and curve 1.5. Choose the nearest curve, i.e. 1.5.
The settable KT values are as follows:
standard system: 1.0-3.0
floor system 0.2-0.8.
Through the interface it is possible to access the menu P4 and the parameter P4.19 to set the pre-selected thermoregulation curve:
access the technical parameters menu, as indicated in the paragraph “ 5.1 Access to the parameters”
select the menu P4 and then P4.19
press the key t o confirm
set the desired climatic curve with the and arrow keys
confirm with
Enter
.
CURVE DI TERMOREGOLAZIONE
3,0 2,5 2,0
60
50
40
30
100
90
80
70
T80
T45
20
20 15 10 5 0 -5 -10 -15 -20
Temperatura esterna (°C)
T80 Maximum temperature heating setpoint for std systems
T45 Maximum temperature heating setpoint for floor systems
1,5
1,0
0,8
0,6
0,4
0,2
NIGHT COMPENSATION (PARAMETER P4.20)
If a ROOM THERMOSTAT is connected to a programming timer, from the menu P4 parameter P4.20 the night compensation can be enabled.
To set the night compensation:
access the technical parameters menu, as indicated in the paragraph “ 5.1 Access to the parameters”
select the menu P4 and then P4.20
press the key to confirm
set the parameter to 1 confirm with .
In this case, when the CONTACT is CLOSED, the heat request is made by the flow sensor, on the basis of the outdoor temperature, to obtain a nominal ambient temperature on DAY level (20°C). The opening of the contact does not produce a switch-off, but a reduction (parallel translation) of the climatic curve on NIGHT level (16°C). Also in this case, the user can indirectly modify the value of the HEATING setpoint inserting once again an offset on the reference DAY temperature
(20°C) rather than NIGHT (16°C) that can vary within the range [-5 - +5]. For correcting the offset see the paragraph
5.8.5 Adjusting the heating water temperature with an outdoor temperature sensor connected.
90
80
70
60
50
40
30
20
10
20 15 10 5 0 -5 -10 -15 -20
Temperatura esterna (°C)
8.13 LIGHTS AND FAULTS
When there is a fault the icon blinks with a frequency of
0.5sec ON and 0.5sec OFF, the backlight blinks for 1min with a frequency of 1sec ON and 1sec OFF after which it switches off; while the bell continues to flash.
On the 4 digits of the display a scrolling message that describes the error code is shown.
OFFSET ON THE REFERENCE AMBIENT TEMPERATURE
The user can, in any event, indirectly intervene on the value of the HEATING setpoint setting, with reference to the reference temperature (20°C), an offset within the range -5 - +5 (offset
0 = 20°C). For correcting the offset see the paragraph “5.8.5
Adjusting the heating water temperature with an outdoor temperature sensor connected”.
90
80
70
60
50
40
30
20
+5°C
10
30
0°C
-5°C
25 20 15 10 5 0 -5 -10 -15 -20
Temperatura esterna (°C)
-
When a fault occurs the following icons can appear: it comes on when there is a flame alarm (E010)
RESET comes on when there is an alarm that requires the manual reset by the user (flame lockout for example)
comes on together with the icon and water alarms.
, except for flame
RESET FUNCTION
In order to reset the boiler’s operation in the event of a fault, it is necessary to press the RESET button. At this point, if the correct operating conditions have been restored, the boiler will restart automatically. There are a maximum of 3 consecutive attempts.
DAY
DAY
DAY
41
b
If the reset attempts do not activate the boiler, contact your installer or Vokera Ltd.
FOR FAULT E041
If the pressure drops below the safety threshold of 0.3 bar the boiler displays the fault code E041 for a transitional time of 30sec.
The boiler is working normally, but does not provide any stability of the domestic hot water temperature that, in any event, is supplied at a temperature of around 50°C. The intervention of the Technical Assistance Service is required.
DAY
When the transitional time has finished, if the fault persists the fault code E040 is displayed.
The boiler has an auto-diagnostic system which, based on the total number of hours in certain operating conditions, can signal the need to clean the primary exchanger (alarm code
E091).
Once the cleaning operation (made with special kit supplied as an accessory) it is necessary to reset to zero the total hour meter following procedure indicated below:
access the technical parameters as explained in the section
“ 5.1 Access to the parameters”
select the P3 menu and then P3.12 with the keys and
set the parameter to 1 confirming the selection with Enter .
NOTE: The meter resetting procedure should be carried out after each in-depth cleaning of the primary exchanger or if this latter is replaced.
The total hours can be verified in the following way:
access the INFO menus as indicated in the paragraph
“8.15 INFO menu ” at I0.15 to display the value of the flue gases probe meter.
When the boiler has fault E040 it will be necessary to repressurise the system as indicated in section “4.2a WHAT IF I
HAVE FREQUENTLY TO TOP-UP THE SYSTEM”.
If the drop in pressure is very frequent, contact your installer or Vokera Ltd.
E091
E099
<0,6 bar
>3,0 bar
COM
COMP
COM1
FWER
OBCD
OTER
8.14 BOILER FAULT CODES
ERROR
CODE
E010
E011
E020
E030
E040
E041
E042
E060
E070
E077
E080
E084
E086
E090
FAULT flame lockout/ condensate discharge blockage fumes discharge alarm/air intake obstructed extraneous flame limit thermostat fan fault pressure transducer – load system water transducer – load system water transducer fault domestic hot water probe fault flow sensor fault flow sensor overtemperature flow/return sensor differential alarm water thermostat main zone or zone 1 (when enabled) return line probe fault return line probe overtemperature outlet/return line probe differential alarm delivery line probe fault - zone 1 delivery line probe fault - main zone flue gas probe fault flue gas probe overtemperature clean primary heat exchanger reset attempts exhausted, boiler blocked
Low water pressure check the HTG system
High water pressure check the HTG system lost communication with boiler board lost communication with main zone lost communication with zone 1
FW version not compatible damaged clock
OTBus configuration fault
For reset faults, except for E40-E041, call engineer.
42
DESCRIPTION OF ALARM
TYPE definitive transitional definitive definitive definitive transitional definitive transitional transitional definitive definitive transitional transitional definitive definitive transitional transitional transitional definitive transitional definitive, not resettable transitional transitional transitional definitive signalisation
8.15 INFO MENU
Pressing key 3 on the display screen displays a list of information regarding the operation of the boiler listed by parameter name and value. Passing from the display of one parameter to the next takes place by pressing respectively the keys and .
Pressing the key allows the selected parameter to be displayed; pressing the key returns you to the main screen:
I0.12
I0.13
I0.14
I0.15
I0.16
I0.17
I0.18
I0.30
I0.31
I0.33
I0.34
I0.35
Parameter name
I0.01
I0.02
I0.03
I0.04
I0.08
I0.09
I0.10
I0.11
Scrolling message only if parameter P1.05 = 1 Description
SCREED HEATING HOURS
CH PROBE
Number of hours passed with screed heater function
Boiler delivery sensor value
RETURN PROBE
DHW PROBE
EXHAUST PROBE
OUTDOOR TEMP PROBE
FILTERED OUTDOOR TEMP
DHW FLOW RATE
DHW SETPOINT
FAN SPEED
MAIN ZONE OUTLET
ZONE 1 OUTLET
EXHAUST PROBE HOURS
MAIN ZONE SET
ZONE 1 SET
WATER PRESSURE
COMFORT
SUN ON
PCB ID
PCB FW
INTERFACE FW
Boiler return sensor value
Domestic hot water probe value
Flue gas probe value
Outdoor temperature sensor instantaneous value
Outdoor temperature fi ltered value used in the thermoregulation algorithm for calculating the heating setpoint
For instantaneous boiler with fl owmeter
Only in case of OTBus connection
Number of turns of the fan (rpm)
Main zone fl ow sensor value (when P4.12 = 1)
Zone 1 fl ow sensor value (when P4.13 = 1)
Number of hours the heat exchanger has been operating in “condensing mode”
Main zone delivery setpoint
Zone 1 delivery setpoint (when P4.23 = 1)
System pressure
Domestic hot water comfort (COFF, CSTD)
Special functions active for high domestic hot water temperature inputs
Electronic board card identifi cation
Electronic board card fmw revision
Interface fmw
43
8.16 EMBEDDED CLOCK
The appliance incorporates an embedded clock that can be enabled and used to insert ON/OFF times for the heating.
NOTES
• It is necessary to insert the correct day and time before enabling/setting the embedded clock
• It is necessary enter parameter P4.21 in order to enable or disable the embedded clock (factory default is disabled).
• It is necessary to enter parameter P4.22 in order to enable or disable mode selection (factory default is disabled).
• Use pass-code ‘18’ in order to access the above parameters
8.17 CLOCK FUNCTIONALITY
The embedded clock has the following functionality:
• Up to 4 different ON/OFF periods (time bands) can be programmed independently for each day
• Weekdays (Mon-Fri) can be grouped
• Weekend (Sat & Sun) can be grouped
• Manual OFF (heating programme is suspended and boiler operates only for hot water
• Manual ON (heating programme is suspended and boiler operates continuously for heating)*
• AUTO (boiler operates heating according to the set schedule)*.
* a room thermostat – if fitted – will over-ride the operation of the heating
8.18 PROGRAMMING THE EMBEDDED
CLOCK
To access the programming timing menu press the keys B+D for at least 2 sec.
Setting the time bands
The display shows TIME ON, press to set the ignition time, with , change the time and confirm with .
The display shows TIME OFF, press to set the switching
OFF time, with , change the time and confirm with .
Time ON is displayed again, then the programming of the time bands is resumed up to the maximum of the programmable bands (four), or else Enter is pressed to confirm the bands set and you move on to the programming of the next day.
For each day of the week it is possible to program up to a maximum of 4 bads, each characterized by a start time and an end time.
Outside these time bands, heat requests from the room thermostat are ignored.
The central heating time bands enabled by default are:
07:30 ÷ 08:30/12:00 ÷ 13:30/18:00 ÷ 22:30 from MON to FRI
08:00 ÷ 22:30 from SAT to SUN.
When heating programming time is enabled, pressing the C +
D keys allows you to switch from AUTO time programming to
MAN ON or MAN OFF.
+
RESET MENU
+
C
D
+ +
B
RESET MENU
The display appears as in the following figure:
D
Using the , arrows select the day or the pre-selected group of days:
1-2-3-4-5-6-7 programming of the individual days
1-5 programming from Monday to Friday
6-7 programming from Saturday to Sunday
1-7 programming the whole week
With the key you confirm the selection made and you pass to the programming of the time bands. With the changes made.
Enter key you exit the programming timing menu and you confirm the
With the key you exit without saving the selections.
44
9 WIRING DIAGRAMS
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
9.1 EXTERNAL WIRING
The appliance comes with a factory fitted (TA) link to allow basic operation of the boiler via the mode selector switch. If external controls are to be added to the system, they must be connected to the appliance as shown in the following diagrams.
For advice on controls that are not featured in this book, please contact Vokèra technical on 0844 391 0999.
9.1.1 EXTERNAL WIRING LIMITATIONS
Low voltage and High voltage cables must be run separately.
Any external wiring must remain within the limits as detailed: room thermostat = 30-metres
9.1.2 OUTSIDE SENSOR
The outside sensor can be connected via a controls interface which enables a connection to be made directly on the PCB at plug CN6 (see Fig. 48).
9.2 OTHER DEVICES
Contact the controls manufacturer and/or Vokèra technical department should you require more specific information on the suitability of a particular control. Further guidance on the recommended practice for the installation of external controls, can be found in CHeSS – HC5/HC6 (www.energyefficiency.gov.uk).
IMPORTANT
• The boiler must always be supplied with a permanent 230V electrical supply.
• The room thermostat connection is low voltage (24 Vdc).
• Do not connect any controls or auxiliary equipment to the low-voltage terminal strip, other than that approved/supplied by Vokèra Ltd.
9.3 OTBUS CONNECTION
When an OTBus remote control is connected to the system, the boiler display shows the following screen:
Fig. 47
CN5
E.S.
-t°
CN6
In particular on the boiler display:
it is no longer possible to set the boiler OFF/WINTER/
SUMMER status (it is set by the OTBus remote control)
it is no longer possible to set the domestic hot water setpoint (it is set by the OTBus remote control)
the combination of the A+B keys remains active for the setting of the DOMESTIC HOT WATER COMFORT function
the domestic hot water setpoint is displayed in the INFO menu
the heating setpoint set on the boiler display is used only if there are heat requests from the TA and the OTBus remote control does not have a request if the parameter:
or
P3.11 = 1
P3.11 = 0 and the jumper on 1-2pin of X 21 is closed
to activate the COMBUSTION CHECK function with an
OTBus remote control connected, you must temporarily disable the connection by setting the parameter P8.03 = 0.
Remember to reset this parameter once the function has finished .
We can see that it is not possible, with the OTBus remote control connected, to change the values of the parameter
P4.12 and P4.23 from 0 to 1.
Fig. 48
45
FUNCTIONAL DIAGRAM
Fig. 49 white white red red grey grey black blue blue white blue brown blue brown blue blue brown brown blue brown
N
Heat
D.H.W.
3 1 blue (sign.) brown (-) black (alim.) black (D.H.W) brown (heat) blue grey (-) blue (HS) red (+) pink (PWM) blue brown violet violet red red
CN15
External sensor
Open therm arancione (A) giallo (B)
3 2 1 brown blue yellow/green giallo (B) rosso (+) nero (-) arancione (A)
46
10 LPG INSTRUCTIONS
10.1 RELATED DOCUMENTS
BS 5440
BS 5449
BS 5482
BS 5546
PARTS 1 & 2
PART 1
PART 1
FLUES & VENTILATION REQUIREMENTS
FORCED CIRCULATION OF HOT WATER SYSTEMS
DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMAMENT DWELLINGS
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
BS 6798 INSTALLATION OF BOILERS OF RATED NOT EXCEEDING 60kW
10.2 TECHNICAL DATA
Gas Pressures
Inlet pressure
Heating maximum gas rate (kg/hr)
DHW maximum gas rate (kg/hr)
Minimum gas rate (kg/hr)
Injector size
VISION PLUS 25C
37.0 mbar
1.55
1.94
0.39
3.8 mm
Silencer flange
CO2 @ maximum output (%)
CO2 @ minimum output (%)
CO @ maximum output (ppm)
CO @ minimum output (ppm)
Slow ignition (rpm)
CH maximum number of fan rotation (rpm)
27 mm (fitted)
10.5
10.5
190
20
4.000
4.900
DHW maximum number of fan rotation (rpm) 6.100
Mimum number of fan rotation (rpm) 1.400
VISION PLUS 30C
37.0 mbar
1.94
2.45
0.47
3.9 mm
29 mm
10.5
10.5
250
25
4.000
5.200
6.700
1.400
NOTE
Please refer to 3 - 3E and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
10.3 GAS CONVERSION
Conversion from a family gas to other family gas can be performed easily also when the boiler is installed.
This operation must be carried out by professionally qualified personnel.
The boiler is delivered to operate with methane gas ( G20 ).
To convert the boiler to propane gas ( G31 ) use the specific accessory kits.
For disassembly, refer to the instructions below:
- remove the power supply to the boiler and close the gas tap
- remove the casing as indicated in paragraph “4.5 CASING
REMOVAL”
- unhook and rotate the dashboard forward
- remove the gas valve ( A )
- remove the nozzle ( B ) contained in the gas valve and replace it with the one contained in the kit
Fig. 50
B
A
-
refit the gas valve
- remove the silencer from the mixer
- open the two half-shells by removing the 2 fixing screws ( C )
- replace the air diaphragm ( D ) contained in the silencer reassemble the previously removed components
- power the boiler and open the gas tap.
Adjust the boiler as described in the paragraph “8.9
Adjustments”.
b
The conversion must be carried out by qualified personnel.
b
After the conversion has been carried out, apply the new identification label contained in the documentation envelope.
10.4 COMPLETION
On completion of the combustion analysis check and/or any gas valve adjustment, refit the plug (see paragraph “8.3.1
Combustion check”). Remove the test probe from the test point and refit the sealing screw/s and/or cap.
IMPORTANT
A GAS TIGHTNESS CHECK MUST BE CARRIED OUT IF ANY
GAS CARRYING COMPONENTS HAVE BEEN REMOVED,
REPLACED OR DISTURBED.
ATTENTION
Gas type and appliance output must be set according to the specific appliance specification. Vokèra accepts no responsi bility if the gas type is not correctly adjusted according to the respective appliance specification as detailed on the appliance data badge.
D
C
Fig. 51
47
COMMISSIONING: CO AND COMBUSTION RATIO CHECK
BEFORE CO AND COMBUSTION RATIO CHECK
The installation instructions should have been followed, gas type verified and gas supply pressure/rate checked as required prior to commissioning.
As part of the installation process, ESPECIALLY WHERE A
FLUE HAS BEEN FITTED BY PERSONS OTHER THAN THE
BOILER INSTALLER , visually check the integrity of the whole flue system to confirm that all components are correctly assembled, fixed and supported. Check that the maximum flue lengths have not been exceeded and all guidance has been followed (e.g. Technical Bulletin 008).
The flue gas analyser should be of the correct type, as specified by BS 7967.
Before use, the flue gas analyser should have been maintained and calibrated as specified by the manufacturer. The installer must have the relevant competence for use of the analyser.
Check and zero the analyser IN FRESH AIR , as per analyser manufacturer’s instructions.
NOTE
The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. If any such adjustment is recommended and further checking of the boiler is required, the engineer must be competent to carry out this work and to use the flue gas analyser accordingly.
If the boiler requires conversion to operate with a different gas family (e.g., conversion from natural gas to LPG) separate guidance will be provided by the
Vokera technical help line and must be followed.
SET BOILER TO MAXIMUM RATE
In accordance with, section 7.3, set boiler to operate at maximum rate (full load condition). Allow sufficient time for combustion to stabilise. , insert analyser probe into air inlet sampling point.
Verify flue integrity
Analyser readings indicate that combustion products and inlet air are mixing.
Further investigation of the flue is therefore required.
Check that flue components are correctly assembled, fixed and supported as per boiler/flue instructions.
Check that flue and flue terminal are not obstructed.
Turn off appliance and call
Vokera’s technical helpline for advice.
The appliance must not be commissioned until problems are identified and resolved. If commissioning cannot be fully completed, the appliance must be disconnected from the gas supply in accordance with the GSIUR.
NOTE: Check and record CO and combustion ratio at both maximum AND minimum rate before contacting the Vokera
N O
Turn off appliance and call Vokera’s technical helpline for advice.
The appliance must not be commissioned until problems are identified and resolved.
NO
Is O2 ≥ 20.6% and CO2 < 0.2%?
Is O2 ≥20.6% and CO2 < 0.2%?
NO
NO
Is CO less than 350ppm
AND
CO/CO
2 ratio less than
0.004?
YES
YES
YES
Check all seals around the appliance burner, internal flue seals, door and case seals. Rectify where necessary.
IIss C O < d C O//C O pp
22 m rraattiioo lleessss tthhaann 00..000044 ??
YES
CHECK CO AND COMBUSTION
RATIO AT MINIMUM RATE
With boiler set at minimum rate, insert analyser probe into flue gas sampling point. Allow readings to stabilise before recording.
NO
CHECK CO AND
COMBUSTION RATIO
AT MAXIMUM RATE
With boiler still set at maximum rate, insert analyser probe into flue gas sampling point.
Allow readings to stabilise before di
Is CO less than
350ppm AND
CO/CO
2 ratio less than 0.004?
YES
SET BOILER TO
MINIMUM RATE
In accordance with section 7.3, set boiler to operate at minimum rate (to minimum load condition). Allow sufficient time for combustion to stabilise.
Boiler is operating satisfactorily
No further actions required.
Ensure test points are capped, boiler case is correctly replaced and all other commissioning procedures are completed.
Complete Benchmark Checklist, recording CO and combustion ratio readings as required.
Benchmark Commissioning &
Warranty Validation Service Record
It is a requirement that the boiler is installed and commissioned to the manufacturers’
To instigate the boiler warranty the boiler needs to be registered with the manufacturer within one month of the installation. The warranty rests with the end-user (consumer), and they should be made aware it is ultimately their responsibility to register with the manufacturer, within the allotted time period.
It is essential that the boiler is serviced in line with the manufacturers’ recommendations, at least annually. This must be carried out by a competent Gas
Safe registered engineer. The service details should be recorded on the Benchmark
Service and Interim Boiler Work Record and left with the householder. Failure to comply with the manufacturers’ servicing instructions and requirements will invalidate the warranty.
www.hhic.co.uk
This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.
Failure to install and commission according to the manufacturers’ instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights.
© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk
GAS BOILER SYSTEM COMMISSIONING CHECKLIST & WARRANTY VALIDATION RECORD
Address:
Boiler make and model:
Boiler serial number:
Commissioned by (PRINT NAME):
Company name:
Company email:
Gas Safe registration number:
Telephone number:
Company address:
Commissioning date:
Heating and hot water system complies with the appropriate Building Regulations? Yes
Time, temperature control and boiler interlock provided for central heating and hot water
Boiler Plus requirements (tick the appropriate box(s))
Boiler Plus option chosen for combination boiler in ENGLAND
Time and temperature control to hot water
Weather compensation
Load compensation
Cylinder thermostat and programmer/timer
Yes
Smart thermostat with automisation and optimisation
Flue Gas Heat Recovery
Combination boiler
Zone valves
Thermostatic radiator valves
Automatic bypass to system pre-existing pre-existing pre-existing pre-existing
Fitted
Fitted
Fitted
Fitted
Not required
Not required
Not required
Not required
Water quality
What system cleaner was used?
What inhibitor was used?
pre-existing
CENTRAL HEATING MODE measure and record (as appropriate)
Brand:
Brand:
Fitted
instructions
Product:
Product:
Yes
Not required
Gas rate (for combination boilers complete DHW mode gas rate)
Central heating output left at factory settings?
If no, what is the maximum central heating output selected?
Dynamic gas inlet pressure m 3/ hr
Yes or
No ft 3 /hr kW mbar
°C
°C Central heating return temperature
System correctly balanced/rebalanced?
COMBINATION BOILERS ONLY
Is the installation in a hard water area (above 200ppm)?
Water scale reducer/softener pre-existing
Yes
Fitted
Yes
No
Not required
Brand: Product:
If yes- DHW expansion vessel
Pressure reducing valve
DOMESTIC HOT WATER MODE Measure and record
Gas rate
Dynamic gas inlet pressure at maximum rate
Cold water inlet temperature pre-existing pre-existing m 3/ hr
Yes
Fitted
Fitted
No
Not required
Not required or ft 3 /hr mbar
°C
Temperature °C Hot water has been checked at all outlets
CONDENSATE DISPOSAL
Yes
The condensate drain has been installed in accordance with the manufacturers’ instructions and/or BS5546/BS6798 Yes
Point of termination
Method of disposal
ALL INSTALLATIONS
Internal
Gravity
External (only where internal termination impractical)
Pumped
Record the following
At max rate:
At min rate (where possible)
CO ppm CO
2
% CO/CO
2
Ratio
CO ppm CO
2
% CO/CO
2
Ratio
instructions, and readings are correct?
Yes
The operation of the boiler and system controls have been demonstrated to and understood by the customer Yes
Yes The manufacturers’ literature, including Benchmark Checklist and Service Record, has been explained and left with the customer
Commissioning Engineer’s signature
Customer’s signature
© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk
SERVICE & INTERIM BOILER WORK RECORD
It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed.
Service provider
When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name: Company name:
Telephone N o : Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name: Company name:
Telephone N o : Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments:
Signature: yes n/a instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk
SERVICE & INTERIM BOILER WORK RECORD
It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed.
Service provider
When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² yes undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² yes undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes n/a
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
SERVICE/INTERIM WORK ON BOILER delete as appropriate
Date:
Engineer name:
Telephone N o :
Company name:
Gas Safe registration N o :
Max rate CO ppm CO² % CO/CO²
Min rate CO ppm CO² % CO/CO² undertaken in accordance with manufacturers’ instructions, and readings are correct?”
Gas rate: m 3 /h delete as appropriate
OR
Yes ft 3 /h
No yes
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments:
Signature: yes n/a instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *
Comments: yes n/a
Signature: instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.
© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk
Vokèra Warranty Terms and Conditions
Vokèra Ltd offer customers the comfort of a parts and labour warranty repair service subject to the following terms and conditions.
Vokèra Ltd only obligation under the guarantee shall be to repair or replace the faulty appliance at Vokèra Ltd discretion. This will be carried out where a fault arises from defects within the appliance, caused by either material or workmanship of the manufacturer.
1. The boiler must have been installed and commissioned within 12 months of manufacture by a registered Gas
Safe (RGII ROI) installer in accordance with the guidelines in the installation and servicing booklet provided with the boiler.
2. This guarantee does not protect malfunction or damage arising from incorrect installation, commissioning or maintenance procedures, as laid out in the installation handbook, inefficient flue system, poor or incorrect electricity, wrong gas supply or pressure, tampering by inexperienced persons and any other cause not directly due to manufacture.
3. Vokèra Ltd cannot accept responsibility for any costs arising from repair or maintenance carried out by any third party.
4. The “Benchmark” commissioning sheet must be completed by the installer and left with the boiler for reference purpose.
5. The warranty will commence from the date of installation. Without proof of purchase ie an invoice or completed
“Benchmark” commissioning sheet, the warranty will commence from the date of manufacture as detailed on the appliance data plate.
6. To qualify for the full term of warranty, the boiler must be serviced once annually by a Gas Safe Registered
Engineer (RGII ROI). Proof of annual service in accordance with the manufacturer’s instructions must be provided (e.g. Benchmark Service Record). If this condition is not met the period of warranty will extend to only 12 months from date of installation.
By registering your appliance, you will be helping us provide you with the best after sales service in the unlikely event that your boiler requires attention during the guarantee period.
Register online: www.vokera.co.uk (UK) or www.vokera.ie (ROI)
If the boiler suffers a mechanical or an electrical breakdown or you require an annual service, please contact our
Customer Care Centre on:
UK: 01274 866100
ROI: 056 7755057
Our normal working hours, excluding Bank holidays are:
8.15am - 5.00pm Monday to Friday
8.00am - 12.00pm Saturday (UK only)
We will arrange for an engineer or appointed agent, to inspect and repair, or where in our sole opinion repair is not economic, arrange to replace the boiler.
7. Health & Safety:
a. Engineers will only attend to boiler products where it is considered by the engineer that the installation does not pose a risk to health and safety.
b. A permanently fixed access ladder must service installations in lofts or attics. Adequate lighting and permanently fixed flooring must also be available.
c. Cupboard installations must provide minimum working clearances as detailed in the installation instructions.
Vokèra will not accept responsibility for the removal of cupboards, kitchen units or trims in order to gain access for repairs.
8. Warranty does not apply:
a. If the boiler is removed from its place of installation without our prior consent.
b. To any defect, damage or breakdown caused by inadequate servicing of the boiler or by deliberate action, accident, misuse or third party interference including modification or an attempted repair which does not fully comply with industry standards.
c. To any defect, damage or breakdown caused by the design, installation and maintenance of the central heating system.
d. To de-scaling or other work required as a result of hard water scale deposits or from damage caused by aggressive water or sludge resulting from corrosion. Indications that such work may be required include a noisy boiler, cold spots on radiators, sludge in pipes and poor circulation of the central heating system.
e. If the claim/contact procedure set out in section 6 is not adhered to.
f. To any other costs or expenses caused by or arising as a result of the breakdown of a Vokèra Boiler.
g. To any costs incurred during delays in fixing reported faults.
9. We reserve the right to a charge a callout fee where:
a. There is no completed “Benchmark” commissioning sheet or equivalent control document present.
b. There is incomplete or no service record(s) for each and every year the boiler has been installed.
c. A fault cannot be found.
d. The breakdown or fault has been caused by an event, which is excluded from the warranty – see section 8.
e. Failure to cancel an agreed appointment prior to our engineers visit.
f. The boiler is outside the period of warranty or the conditions of the warranty have not been met.
10. If we fit replacement parts or replace a boiler it will not extend the period of the warranty. All replaced parts or boilers will become the property of Vokèra Ltd.
11. The warranty applies only where a Vokèra boiler has been installed in a domestic dwelling in the United Kingdom,
Northern Ireland or Republic of Ireland, to provide heat and/or hot water to the central heating system.
12. Vokèra Ltd warranty is offered in addition to the rights provided to a consumer by law. Details of these rights can be obtained from a Trading Standards Authority or a Citizen Advice Bureaux.
Your Personal Details
Vokèra takes care of your personal details in order to protect your privacy. Below we detail how we use any data you provide us with and how we manage that data to protect it.
Personal data is collected by us confidentially and in accordance with data protection law regulations. Vokèra is registered as a data controller with the Information Commissioner’s Office.
Your personal data is only stored if you volunteer to provide it, for example, to request information, submit a service visit, or to register a product for purposes of warranties and surveys etc. Vokèra will only use your personal data to satisfy the request you have made, and will not disclose information to third parties without your prior consent.
Any personal data stored by Vokèra is protected to ensure unauthorised persons cannot access or disclose the data. Vokèra uses security measures to protect the data we collect, in order to prevent manipulation, loss and destruction. No user information provided is stored anywhere on the internet that can be accessed by the public.
Vokèra may like to inform you of products and services that you could be interested in, and request your opinion of our services. Participation is voluntary and you can request not to receive such communications at any time or request your details to be updated by emailing:
[email protected].
Contact Us:- Customer Care Centre
Tel: 01274 866100 (UK), 056 7755057 (ROI)
UK:
Vokèra Ltd, Customer Care, Stubs Beck Lane, West 26 Business Park, Whitehall Road, Cleckheaton, BD19 4TT
ROI:
Vokèra Ltd, Customer Care, West Court, Callen, Co Kilkenny, Ireland , R95 PW40
Email: [email protected] (UK), [email protected] (ROI)
Guarantor – Vokèra Ltd, Borderlake House, Unit 7 Riverside Ind Est, London Colney, Herts AL2 1HG
d. To de-scaling or other work required as a result of hard water scale deposits or from damage caused by aggressive water or sludge resulting from corrosion. Indications that such work may be required include a noisy boiler, cold spots on radiators, sludge in pipes and poor circulation of the central heating system.
e. If the claim/contact procedure set out in section 6 is not adhered to.
f. To any other costs or expenses caused by or arising as a result of the breakdown of a Vokèra Boiler.
g. To any costs incurred during delays in fixing reported faults.
9. We reserve the right to a charge a callout fee where:
a. There is no completed “Benchmark” commissioning sheet or equivalent control document present.
b. There is incomplete or no service record(s) for each and every year the boiler has been installed.
c. A fault cannot be found.
d. The breakdown or fault has been caused by an event, which is excluded from the warranty – see section 8.
e. Failure to cancel an agreed appointment prior to our engineers visit.
f. The boiler is outside the period of warranty or the conditions of the warranty have not been met.
10. If we fit replacement parts or replace a boiler it will not extend the period of the warranty. All replaced parts or boilers will become the property of Vokèra Ltd.
11. The warranty applies only where a Vokèra boiler has been installed in a domestic dwelling in the United Kingdom,
Northern Ireland or Republic of Ireland, to provide heat and/or hot water to the central heating system.
12. Vokèra Ltd warranty is offered in addition to the rights provided to a consumer by law. Details of these rights can be obtained from a Trading Standards Authority or a Citizen Advice Bureaux.
Your Personal Details
Vokèra takes care of your personal details in order to protect your privacy. Below we detail how we use any data you provide us with and how we manage that data to protect it.
Personal data is collected by us confidentially and in accordance with data protection law regulations. Vokèra is registered as a data controller with the Information Commissioner’s Office.
Your personal data is only stored if you volunteer to provide it, for example, to request information, submit a service visit, or to register a product for purposes of warranties and surveys etc. Vokèra will only use your personal data to satisfy the request you have made, and will not disclose information to third parties without your prior consent.
Any personal data stored by Vokèra is protected to ensure unauthorised persons cannot access or disclose the data. Vokèra uses security measures to protect the data we collect, in order to prevent manipulation, loss and destruction. No user information provided is stored anywhere on the internet that can be accessed by the public.
Vokèra may like to inform you of products and services that you could be interested in, and request your opinion of our services. Participation is voluntary and you can request not to receive such communications at any time or request your details to be updated by emailing:
[email protected].
Contact Us:- Customer Care Centre
Tel: 01274 866100 (UK), 056 7755057 (ROI)
UK:
Vokèra Ltd, Customer Care, Stubs Beck Lane, West 26 Business Park, Whitehall Road, Cleckheaton, BD19 4TT
ROI:
Vokèra Ltd, Customer Care, West Court, Callen, Co Kilkenny, Ireland , R95 PW40
Email: [email protected] (UK), [email protected] (ROI)
Guarantor – Vokèra Ltd, Borderlake House, Unit 7 Riverside Ind Est, London Colney, Herts AL2 1HG
RANGE RATED - EN 15502
The max CH input of this boiler has been adjusted to_____ kW, equivalent to _____ rpm max CH fan speed.
Date___/____/____
Signature _____________________
Boiler serial number
_____________________
Registered address:
Vokèra Ltd
Borderlake House
Unit 7 Riverside Industrial Estate
London Colney
Herts AL2 1HG www.vokera.co.uk
www.vokera.ie
Sales, General Enquires
T 0844 391 0999
F 0844 391 0998
Vokèra Ireland
West Court, Callan
Co Kilkenny
T 056 7755057
F 056 7755060
Vokèra Limited reserve the right to change specification without prior notice
Consumers statutory rights are not affected.
Company Reg No: 1047779
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