Baxi SCB-17 Operating manual

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en
User and Installation Manual
Expansion board
it
Manuale di installazione e uso
Scheda di espansione
fr
Manuel d'utilisation et d'installation
Carte d'extension
es
Manual de usuario e instalación
Tarjeta de expansión
pt
Manual de Instalação e Utilização
Placa de expansão
de
Benutzer- und Installationshandbuch
Erweiterungsplatine
SCB-17

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Contents
1 About this manual ................................................................................................................................................3
1.1 Symbols used in the manual.................................................................................................................. 3
2 Description of the product....................................................................................................................................4
2.1 Introduction to the controls platform.......................................................................................................4
2.2 General description of the SCB-17 ........................................................................................................5
2.3 Identification number .............................................................................................................................5
3 Installation............................................................................................................................................................ 7
3.0 Example of installation in the appliance.................................................................................................7
3.1 Electrical connections............................................................................................................................7
3.1.1 Connecting a three-way valve ..................................................................................................7
3.1.2 Connecting the pump with a safety thermostat.........................................................................8
3.1.3 Connecting the pump ............................................................................................................... 8
3.1.4 Connecting a room thermostat .................................................................................................8
3.1.5 Connecting an external flow temperature sensor .....................................................................8
3.1.6 Connecting a solar temperature sensor.................................................................................... 8
3.2 Auto-detecting the SCB-17 .................................................................................................................... 8
3.3 Exemple of applications......................................................................................................................... 9
4 Settings..............................................................................................................................................................12
4.1 Introduction to parameter codes ..........................................................................................................12
4.2 Access to parameters..........................................................................................................................12
4.2 SCB-17 settings...................................................................................................................................14
4.3 Reading out measured values .............................................................................................................33
4.3.1 SCB-17 expansion board counters......................................................................................... 33
4.3.2 SCB-17 expansion board signals ...........................................................................................35
4.3.3 Status and sub-status - SCB-17 .............................................................................................44
5 Troubleshooting .................................................................................................................................................47
5.1 Warning codes - SCB-17 .....................................................................................................................47
5.2 Blocking codes - SCB-17.....................................................................................................................48

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1 About this manual
1.1 Symbols used in the manual
This manual contains special instructions, marked with specific symbols. Please pay extra attention when these symbols are
used.
Important
Please note: important information.
See
Reference to other manuals or pages in this manual.

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2 Description of the product
2.1 Introduction to the controls platform
This device is compatible with the controls platform. This is a modular system and offers compatibility and connectivity between
all products that make use of the same platform.
Generic example
Components in the example
Item
Description
Function
CU
Control Unit: Control unit
The control unit handles all basic functionality of the
appliance.
CB
Connection Board: Connection PCB
The connection PCB is used to provide easy access to
all connectors of the control unit.
SCB
Smart Control Board: Expansion board (optional)
An expansion board can be fitted to an appliance to
provide extra functionality, like an internal calorifier or
multiple zones.
MK
Control panel: Control panel and display
The control panel is the user interface to the appliance.
RU
Room Unit: Room unit (e.g. a thermostat)
A room unit is used to measure the temperature in a
reference room.
L-Bus
Local Bus: Connection between devices
The local bus provides communication between devices.
S-Bus
System Bus: Connection between appliances
The system bus provides communication between
appliances.
R-Bus
Room unit Bus: Connection to a room unit
The room unit bus provides communication to a room
unit.
A
Device
A device is a PCB, display or a room unit.
B
Appliance
An appliance is a set of devices connected via the same
L-Bus
C
System
A system is a set of appliances connected via the same
S-Bus
Devices covered in this manual
Name visible
in display
Description
Function
SCB-17
SCB-17
The SCB-17 provides functionality for two extra zones.

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2.2 General description of the SCB-17
Two extra zones can be connected to the SCB-17 expansion board.
Expansion boards are automatically recognised by the control unit of the boiler. If expansion boards are removed, the boiler will
show an error code. To solve this error, an auto-detect must be carried out after removal.
SCB-17 board
1 Three-way valve –Circuit C
2 Pump and safety thermostat –Circuit C
3 Pump –Circuit B
4 Solar sensor (*)
5 Flow temperature sensor - Circuit C
6 Flow temperature sensor - Circuit B
7 Ambient sensor –Circuit C
8 Ambient sensor –Circuit B or Solar PWM (*)
9 L-BUS Connector
10 L-BUS Connector
11 Rotary button for identification
12 230VAC input power supply
(*) Solar functions not used on SCB-17
2.3 Identification number
There is a rotary button on the SCB-17, which can be used to number select an identification number for the PCB. If multiple
SCB-17 boards are in use, each PCB can have a unique number for identification.
Rotary button for identification
4
5
6
7
8
1
2
3
10
9
11
12

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Important
The letters on the rotary button represent the
following numbers:
•A = 10
•B = 11
•C = 12
•D = 13
•E = 14
•F = 15

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3 Installation
3.0 Example of installation in the appliance
The SCB-17 boards can be installed directly on
the boiler. For installation and fixing:
•Remove the control panel cover.
•Place the board/s as shown in the figure. Secure
them with the screws supplied with the accessory kit.
•To connect the accessory board, use the L-BUS
CB4 e CB5 connectors on the boiler as described
below.
To connect an SCB-17 on the boiler:
•Remove the connector with L-BUS
terminating resistance (A) on the
connection board and place it on the L-
BUS connector of the SCB-17 (B) .
•Connect the L-BUS cable from the
connections board (CB5) to the
accessory board and the 230V power
supply (if provided). Fix the accessories
card in the area provided on the front
panel of the boiler.
3.1 Electrical connections
Three-way valve connector –Circuit C
3.1.1 Connecting a three-way valve
The three-way valve connector can be used to connect a three-way valve
(230 VAC) for mixing circuit (zone).
Connect the three-way valve as follows:
Earth
N
Neutral
Open

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Closed
Pump and safety thermostat connector –
Circuit C
3.1.2 Connecting the pump with a safety thermostat
The pump connector can be used to connect a zone pump. The TS
connector can be used to connect a safety thermostat, e.g. for underfloor
heating. The maximum pump power consumption is 300 VA.
Connect the pump and the protection thermostat as follows:
Earth
N
Neutral
L
Phase
TS
Safety thermostat (remove bridge)
Pump connector –Circuit B
3.1.3 Connecting the pump
The pump connector can be used to connect a zone pump.
Connect the pump as follows:
Earth
N
Neutral
L
Phase
RUB connectors –Circuit B & C
3.1.4 Connecting a room thermostat
The R-Bus connector can be used to connect a room thermostat. The
connector supports the following types:
•OpenTherm controller
•BDR Room Unit
•On/off thermostat
The software recognizes which type of thermostat is connected.
PWM is used to control solar pump (not used on SCB-17)
Tflow connector –Circuit B & C
3.1.5 Connecting an external flow temperature sensor
The Tflow connector can be used to connect a flow temperature sensor for
use in the system.
T2 connector –T Coll Solar
3.1.6 Connecting a solar temperature sensor
(not used on SCB-17)
3.2 Auto-detecting the SCB-17
Once the SCB-17 is installed and connected via L-bus to the appliace and the system is power-up, it is necessary to activate an
system autodetection using the boiler control panel. Refer to boiler appliance instruction manual.

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3.3 Exemple of applications
1 Direct zone + 1 Mixing zone
A = Boiler
B = Direct zone –Circuit B
C = Mixing zone –Circuit C
SCB-17 default settings are suitable for this connection.

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1 Fan convector zone + 1 Swimming pool zone
A = Boiler
C = Direct zone (fan coil) - Circuit B
D = Direct zone (swimming pool) –Circuit C
Code
Display text
Description
Default setting
Default setting

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CP020
Zone Function
Functionality of the zone
1 (Direct)
5 (Fan convector)
CP021
Zone Function
Functionality of the zone
2 (Mixing Circuit)
3 (Swimming
pool)

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4 Settings
4.1 Introduction to parameter codes
The controls platform makes use of an advanced system to
categorise parameters, measurements and counters. Knowing the
logic behind these codes, makes it easier to identify them. The code
consists of two letters and three numbers.
First letter
CP010
The first letter is the category the code relates to.
A Appliance: Appliance
C Circuit: Zone
Second letter
CP010
The second letter is the type.
P Parameter: Parameters
C Counter: Counters
M Measurement: Signals
Number
CP010
The number is always three digits. In certain cases, the last of the
three digits relates to a zone.
4.2 Access to parameters
To access to SCB-17 parameters, it is possible to use the boiler control panel (refer to boiler instruction manuals ) or service
tool. Below some examples :
Control panel MK3
•Press menu button and enable installer access selecting “installer access” and entering the code 0012. To change
the number, rotate the knob and push the confirmation button.
•Select the zone to be modified (tile in the main screen)
•Select the parameter zone to change, then scroll down the zone setup menu till the voice “Parameters, counters,
signals” and push the confirmation button.
In alternative it is possible to search the single parameter pushing the menu button → “Installation setup” → “Search
datapoint” . Write the friendly name and press enter.
The control panel shows all possible parameters with the same name. They can be more than one because of different
devices connected.

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Control panel MK2.x
•Enable installer access selecting “installer” from the main menu and entering the code 0012. To change the number,
rotate the knob and push enter to confirm.
•Enter in “Installation setup” and select the parameter zone to change.
It is possible to search the single parameter pushing the menu button →“Finder”. Write the friendly name and press
enter.
The control panel shows all possible parameters with the same name. They can be more than one because of different
devices connected.

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4.2 SCB-17 settings
Factory settings at user / basic installer level
Code
Display text
Description
Zone ID
Range
Zone Function
Default
setting
AP077
Max. display level
Maximum level of parameters and signals to
display on MK
N/A
1 = End user 2 = Installer 3 = Installer advanced 4 = Lab 5 = Controls Development
System Functionality
0
AP081
Device short name
Shortname of the device
N/A
System Functionality
S17
CP010
Tflow setpoint zone
Zone flow temperature setpoint, used when the
zone is set to a fixed flow setpoint.
Zone B
7 °C - 100 °C
Direct zone Mixed zone High temp. Zone Fan convector zone
90
CP011
Tflow setpoint zone
Zone flow temperature setpoint, used when the
zone is set to a fixed flow setpoint.
Zone C
7 °C - 100 °C
Direct zone Mixed zone High temp. Zone Fan convector zone
40
CP200
Manu ZoneRoomTempSet
Manually setting the RoomTemperature setpoint
of the zone
Zone B
5 °C - 30 °C
Direct zone Mixed zone High temp. Zone Fan convector zone
20
CP201
Manu ZoneRoomTempSet
Manually setting the RoomTemperature setpoint
of the zone
Zone C
5 °C - 30 °C
Direct zone Mixed zone High temp. Zone Fan convector zone
20
CP320
OperatingZoneMode
Operating mode of the zone
Zone B
0 = Scheduling 1 = Manual
Direct zone Mixed zone
0

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2 = Antifrost 3 = Temporary
Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank
CP321
OperatingZoneMode
Operating mode of the zone
Zone C
0 = Scheduling 1 = Manual 2 = Antifrost 3 = Temporary
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank
0
CP350
ComfortZoneDHWtemp
Comfort Domestic Hot Water Temperature
Setpoint of zone
Zone B
40 °C - 80 °C
DHW tank Electrical DHW tank
55
CP351
ComfortZoneDHWtemp
Comfort Domestic Hot Water Temperature
Setpoint of zone
Zone C
40 °C - 80 °C
DHW tank Electrical DHW tank
55
CP360
ReducedZoneDHWtemp.
Reduced Domestic Hot Water Temperature
Setpoint of zone
Zone B
10 °C - 60 °C
DHW tank Electrical DHW tank
10
CP361
ReducedZoneDHWtemp.
Reduced Domestic Hot Water Temperature
Setpoint of zone
Zone C
10 °C - 60 °C
DHW tank Electrical DHW tank
10
CP510
Temporary Room Setp
Temporary room setpoint per zone
Zone B
5 °C - 30 °C
Direct zone Mixed zone High temp. Zone Fan convector zone
20
CP511
Temporary Room Setp
Temporary room setpoint per zone
Zone C
5 °C - 30 °C
Direct zone Mixed zone High temp. Zone Fan convector zone
20
CP540
Zone TSwimmPool setp
Setpoint of swimming pool when Zone is
configured on SwimmingPool
Zone B
0 °C - 39 °C
Swimming pool
20
CP541
Zone TSwimmPool setp
Setpoint of swimming pool when Zone is
configured on SwimmingPool
Zone C
0 °C - 39 °C
Swimming pool
20

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CP550
Zone, fire place
Fire Place mode is active
Zone B
0 = Off 1 = On
Direct zone Mixed zone High temp. Zone Fan convector zone
0
CP551
Zone, fire place
Fire Place mode is active
Zone C
0 = Off
1 = On
Direct zone Mixed zone High temp. Zone Fan convector zone
0
CP570
ZoneTimeProg Select
Time Program of the zone selected by the user
Zone B
0 = Schedule 1 1 = Schedule 2 2 = Schedule 3 3 = Cooling
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program
0
CP571
ZoneTimeProg Select
Time Program of the zone selected by the user
Zone C
0 = Schedule 1 1 = Schedule 2 2 = Schedule 3 3 = Cooling
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program
0
CP660
Icon display zone
Choice icon to display this zone
Zone B
0 = None 1 = All 2 = Bedroom 3 = Livingroom 4 = Study 5 = Outdoor 6 = Kitchen
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank
0

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7 = Basement 8 = Swimming Pool 9 = DHW Tank 10 = DHW Electrical Tank 11 = DHW Layered Tank 12 = Internal Boiler Tank 13 = Time Program
Zone time program Process heat
CP661
Icon display zone
Choice icon to display this zone
Zone C
0 = None 1 = All 2 = Bedroom 3 = Livingroom 4 = Study 5 = Outdoor 6 = Kitchen 7 = Basement 8 = Swimming Pool 9 = DHW Tank 10 = DHW Electrical Tank 11 = DHW Layered Tank 12 = Internal Boiler Tank 13 = Time Program
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program Process heat
3
CP670
ConfPairing RU Zone
Configuration of pairing room unit per zone
Zone B
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program Process heat
CP671
ConfPairing RU Zone
Configuration of pairing room unit per zone
Zone C
Direct zone

18
Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program Process heat

19
Factory settings at installer level
Code
Display text
Description
Zone ID
Range
Zone Function
Default
setting
CP000
MaxZoneTFlowSetpoint
Maximum Flow Temperature setpoint zone
Zone B
7 °C - 100 °C
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Process heat
90
CP001
MaxZoneTFlowSetpoint
Maximum Flow Temperature setpoint zone
Zone C
7 °C - 100 °C
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Process heat
45
CP020
Zone Function
Functionality of the zone
Zone B
0 = Disable 1 = Direct 2 = Mixing Circuit (N/A) 3 = Swimming pool 4 = High Temperature 5 = Fan Convector 6 = DHW tank 7 = Electrical DHW 8 = Time Program (N/A) 9 = ProcessHeat
Zone manager Zone disabled Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program Process heat
1

20
CP021
Zone Function
Functionality of the zone
Zone C
0 = Disable 1 = Direct 2 = Mixing Circuit 3 = Swimming pool 4 = High Temperature 5 = Fan Convector 6 = DHW tank 7 = Electrical DHW 8 = Time Program 9 = ProcessHeat
Zone manager Zone disabled Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Zone time program Process heat
2
CP030
Bandwith MixingValve
Bandwith of mixing valve zone where
modulation takes place.
Zone B
4 °C - 16 °C
Mixed zone
12
CP031
Bandwith MixingValve
Bandwith of mixing valve zone where
modulation takes place.
Zone C
4 °C - 16 °C
Mixed zone
12
CP040
Postrun zone pump
Pump post runtime of the zone
Zone B
0 Min - 20 Min
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Process heat
4
CP041
Postrun zone pump
Pump post runtime of the zone
Zone C
0 Min - 20 Min
Direct zone Mixed zone Swimming pool High temp. zone Fan convector zone DHW tank Electrical DHW tank Process heat
4