Baxi Twin Channel Digital Programmer Assembly instructions

en
United Kingdom
These instructions should be read in conjunction with the Boiler Installation and Service Instructions.
Please leave with the user when completed.
Instruction manual for Installers and Users
Twin Channel Digital Programmer
Override
HEATINGHOT WATER
Extra Hour
Mode
DAY/ CH RUN
TIME
OFF
am
Thu
AUTO
ONCE
CONT
EXT HOUR
+1
+2
+3
ON1
OFF
AUTO
ONCE
CONT
EXT HOUR
+1
+2
+3
ON1
DHW
Override
Extra Hour
Mode
OK
Holidays
Select

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Contents
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7212552
ection Page
1. Introduction
1.1 General energy information 4
1.2 Description of the device 4
1.3 Designated use 5
1.4 Technical data 5
2. itting the Controller
2.1 Installation and mounting 6
2.2 General siting information 6
2.3 Wiring and wall mounting 6
3. Operation & Configuration
3.1 Quick start guide 7
3.2 Guide to button functions 7
3.3 Commissioning 8
3.4 Domestic hot water systems
- fully pumped system or gravity-fed system 9
3.5 To alter the time and date 10
3.6 To show a digital time display and change
AM/PM time display to 24 hour clock 11
4. Setting the Heating Programmes
4.1 Running a default programme 12
4.2 Selecting a programme type and
a default programme 13
4.3 Weekly programming days or blocks 14
4.4 5-2 programming 14
4.5 Daily programming 14
4.6 Setting time periods 15
5. Operating Mode
5.1 Using the mode button 16
5.2 Override mode 16
5.3 Extra hour mode 16
5.4 Holiday mode 17
6. Installer Information
6.1 Installer menu 18
6.2 Disposal 20

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1. Introduction
7212552
Warning
Danger! Risk of electric shock! Installation must be carried out by a person competent to do so!
Before removal from the backplate, the device must be disconnected from the power supply!
Interferences and changes to the device will invalidate the warranty and guarantee rights.
Maximum diameter of the cable for the terminals is 2 x 2.5 mm2.
Read and observe these instructions fully to ensure the correct operation of the device and a safe
operation.
1.1 General energy information
What is a programmer?...an Explanation for Householders
(as recommended by the Energy Savings Trust)
Programmers allow you to set ‘ON’ and ‘O ’ time periods. Some models switch the central
heating and domestic hot water on and off at the same time, while others allow the domestic hot
water and heating to come on and go off at different times. Set the ‘ON’ and ‘O ’ time periods to
suit your own lifestyle. On some programmers you must also set whether you want the heating and
hot water to run continuously, run under the chosen ‘ON’ and ‘O ’ heating periods, or be
permanently off.
The time on the programmer must be correct. Some types have to be adjusted in spring and
autumn at the changes between Greenwich Mean Time and British Summer Time. You may be
able to temporarily adjust the heating programme, for example, ‘Override’, ‘Advance’, or ‘Boost’.
These are explained in the manufacturer’s instructions. The heating will not work if the room
thermostat has switched the heating off. And, if you have a hot-water cylinder, the water heating
will not work if the cylinder thermostat detects that the hot water has reached the correct
temperature.
1.2 Description of the device
Your two channel programmer provides timing control for your central heating and domestic hot
water, letting you set ON and O periods to suit your own lifestyle.
Backlit LCD Display
Real Time Clock
Up to 3 ON/O per day
Automatic summertime / wintertime changeover
Daily, weekly and week-weekend programming possibility
Different running modes: O , AUTO, ONCE, CONTINUOUS and HOLIDAYS
Manual override function
Manual extra hour function
3 different pre-programmed profiles, customisable by user

1. Introduction
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7212552
1.3 Designated use
The programmer is used to control central heating zone systems or combi boilers and domestic hot
water systems (“fully pumped” or “gravity fed”).
Suitable for use in dry rooms only!
Do not install in the vicinity of devices which generate inductive discharges (motors, transformers,
etc.)
1.4 Technical data
Dimensions H x W x D (mm) 95 x 148 x 36
Weight g (approx.) 285
Power supply 230 V AC / 50-60 Hz
Power consumption < 3 W
Power reserve >2h
Switching capacity 3 A 250 V ~ resistive, cos φ = 1
3 A 250 V ~ inductive, cos φ = 0.6
Time display 24 h or 12 h AM/PM format
Time setting resolution:
- Time of day 1 min.
- Programmes / min. switching 1 min.
Programmes Selectable (daily, weekly, or week-weekend)
Number of switchings per day 3 ON/O pairs
(2 ON/O pairs selectable)
Operating temperature range 0°C ... + 45°C
Ambient temperature -20°C ... + 55°C
Humidity range 10 to 90% RH, non condensing
Accuracy Type ± 1 sec./day at +20°C
Terminal capacity 2 x 2,5 mm2
Protection type IP 30
European standards EN60730-2-7
Compliant with building regulations
(Part L UK) (Part J Scotland)

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2. itting the Controller
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2.1 Installation and mounting
Warning
Danger! Risk of electric shock! Installation must
be carried out by a person competent to do so!
2.2 General siting information
Identify a suitable site to locate the unit. ig. 1
gives guidance on optimum positioning and siting
restrictions.
Do not place behind curtains.
Do not place above or below sources of heat.
2.3 Wiring and wall mounting
Undo the retaining screw underneath the
programmer. ig. 2(a). Insert a screwdriver as
shown and carefully prise the programmer loose
and lift away from backplate.
Wiring can be routed from behind or if surface
mounted, through the breakout tab to the left of
the retaining screw at the bottom of the back
plate.
ix the backplate to the wall using the screws
provided.
Connect the wiring into the backplate connectors
as shown in ig. 3.
Replace the programmer on the backplate and
press firmly down to fully engage the contact pins
and tighten the screw underneath the
programmer.
1.5 m
Fig. 3. Wiring diagram
Fig. 2. Mounting the controller
Fig. 1. Siting
a
d
e
c
b
NL1234
NCH
OFF
CH
ON
HW
ON
HW
OFF
230 V / 50-60 Hz
timeswitch /
programmer
wallplate
L

3. Operation & Configuration
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3.1 Quick start guide
1. Connect mains power.
2. Press OK three times.
The default Standard programme runs.
You can control the unit with the Override, Extra
Hour or Mode buttons.
Please read the full instructions if you want to
know more.
3.2 Guide to button functions
A Day of the week indicator
B Current day, month, year
C Central heating icon
D Central heating override button
E Central heating extra hour button
Central heating operating mode button
G Central heating indicator lamp
H Central heating extra hour indication
I Central heating programming period indication
J Select indicator lamps
K Select
L OK button
M “-” and “+” button
N Holiday button
O Holiday icon
P Information text line
Q Domestic hot water programming period indication
R Domestic hot water extra hour indication
S Domestic hot water indicator lamp
T Domestic hot water operating mode
U Analogue clock / current time
V Domestic hot water extra hour button
W Domestic hot water override button
X Domestic hot water icon
Y Warning icon
AYXBC
D
E
F
G
H
I
J
KL
W
V
U
T
SRQ
P
O
N
M
Override
HEATINGHOT WATER
Extra Hour
Mode
DAY/ CH RUN
TIME
OFF
am
Thu
AUTO
ONCE
CONT
EXT HOUR
+1
+2
+3
ON1
OFF
AUTO
ONCE
CONT
EXT HOUR
+1
+2
+3
ON1
DHW
Override
Extra Hour
Mode
OK
Holidays
Select
OK
Override
Extra Hour
Mode
HEATINGHOT WATER
Override
Extra Hour
Mode

Select day with + and -
buttons and confirm with OK.
DAILY The same ON/O time schedule is used every day.
WEEKLY A different time schedule can be programmed for
each day.
5-2 One time schedule is used for Mon- ri and a different
one can be used for Sat & Sun.
OK
2
Select your program type with +
and - buttons and confirm with OK.
OK
1
Select month with + and -
buttons and confirm with OK.
OK
3
Select year with + and -
buttons and confirm with OK.
OK
4
Select hour with + and -
buttons and confirm with OK.
OK
5
Select minutes with + and -
buttons and confirm with OK.
OK
6
The date and time are saved.
The programmer goes to
RUN mode
OK
7
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3. Operation & Configuration
3.3 Commissioning
Connect the programmer to the power. The product name and version are displayed briefly.
7212552

3. Operation & Configuration
3.4 Domestic hot water systems - fully pumped system or gravity-fed system
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Fully pumped Domestic Hot Water system (PUMPED)
The term for any boiler that uses a pump to move all the heat from the boiler to every part of the
system is “fully pumped”. As a rule one pump is used to circulate the water through valves which
divert the flow to the relevant part of the system (central heating or domestic hot water). In this type
of system, both channels of the programmer can work independently.
Gravity-fed Domestic Hot Water system (GRAVITY)
In gravity fed hot water systems,whenever the boiler comes on to service heating, there will
inevitably be some circulation through the hot water storage tank, which will then heat up. In this
case there is no possibility to have heating without hot water, and the times for both are set using
the CH programme.
You can choose the desired system in the IN TALLER MENU.
OK
Select
CH RUN
DAY/TIME DHW
1
OK
2
Press OK.
Press the SELECT
buttons until
RUN light is lit.
Press and hold + & -
buttons together for
10 seconds.
OK
3
Press + six times
OK
pump/gravity
pumped
4
Press OK to edit settings.
OK
pump/gravity
pumped
5
Press +/- to change setting.
Press OK.
Select
CH RUN
DAY/TIME DHW
6
Press the + button twice.
The menu will exit and the the
RUN light should remain lit.

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3. Operation & Configuration
3.5 To alter the time and date
7212552
Press the SELECT buttons until DAY/TIME light is lit.
Select
CH RUN
DAY/TIME DHW
1
Select day with + and -
buttons and confirm with OK.
OK
2
Select month with + and -
buttons and confirm with OK.
OK
3
Select year with + and -
buttons and confirm with OK.
OK
4
Select hour with + and -
buttons and confirm with OK.
OK
5
Select minutes with + and -
buttons and confirm with OK.
OK
6
OK
7The date and time
are saved.
Press the right hand
SELECT button to
select RUN mode.
DAY/ PRG RUN
Select
TIME

OK
Select
CH RUN
DAY/TIME DHW
1
OK
2
OK
3
Press the SELECT
buttons until
RUN light is lit.
Press and hold + & - buttons
together for 10 seconds. Press OK
Press OK
OK
4
Press -
OK
5
Press OK
OK
6
Press OK
OK
7
Press + or -
OK
8
Press OK
Press + eight times
to exit menu and
save your changes
3. Operation & Configuration
3.6 To show a digital time display and change AM/PM time display to 24 hour clock
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4. Setting the Heating Programmes
4.1 Running a default programme
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The default programmes can be selected in the INSTALLER MENU. To access the installer’s
menu, the device must be working in RUN mode.
Default programme TD (DEFAULT)
Daily ON1: 06:30 am ON2: 12:00pm* ON3: 04:30 pm
O 1: 08:30 am O 2: 12:00pm* O 3: 10:30 pm
Weekly ON1: 06:30 am ON2: 12:00pm ON3: 04:30 pm
O 1: 08:30 am O 2: 01:00pm O 3: 10:30 pm
5-2 ON1: 06:30 am ON2: 12:00pm ON3: 04:30 pm Mon - ri
O 1: 08:30 am O 2: 01:00pm O 3: 10:30 pm
ON1: 06:30 am ON2: 12:00pm ON3: 04:00 pm Sat - Sun
O 1: 09:30 am O 2: 01:00pm O 3: 10:30 pm
Default programme HOME
Daily ON1: 06:30 am ON2: 12:00pm* ON3: 04:00 pm
O 1: 09:30 am O 2: 12:00pm* O 3: 11:00 pm
Weekly ON1: 06:30 am ON2: 12:00pm ON3: 04:00 pm
O 1: 09:30 am O 2: 01:00pm O 3: 11:00 pm
5-2 ON1: 06:30 am ON2: 12:00pm ON3: 04:30 pm Mon - ri
O 1: 09:30 am O 2: 01:00pm O 3: 11:00 pm
ON1: 06:30 am ON2: 12:00pm ON3: 04:00 pm Sat - Sun
O 1: 09:30 am O 2: 01:00pm O 3: 11:30 pm
Default programme ECO
Daily ON1: 06:30 am ON2: 12:00pm* ON3: 05:30 pm
O 1: 07:30 am O 2: 12:00pm* O 3: 10:00 pm
Weekly ON1: 08:30 am ON2: 12:00pm ON3: 05:30 pm
O 1: 09:30 am O 2: 01:00pm O 3: 10:00 pm
5-2 ON1: 06:30 am ON2: 12:00pm ON3: 05:30 pm Mon - ri
O 1: 07:30 am O 2: 12:00pm O 3: 10:00 pm
ON1: 08:30 am ON2: 12:00pm ON3: 05:30 pm Sat - Sun
O 1: 09:30 am O 2: 01:00pm O 3: 10:30 pm
Three programme types are possible on the programmer
DAILY The same ON/O time schedule is used every day.
WEEKLY A different time schedule can be programmed for each day.
5-2 One time schedule is used for Mon- ri and a different one can be used for Sat & Sun.
or each programme type, three default programmes are provided. These have been designed to
provide heating at typical times throughout the day. The default programmes give you a starting
point that you can personalise to your own requirements, please see the section 4.3 - 4.5.
You can choose the desired programme in the INSTALLER MENU as shown overleaf.
Every programme has three pairs of ON/O switching times per day.
Each time can be set between 3.00 am and 2.50 am (on the next day).
*On/off periods with the same time cancel out - no switching will occur.

4. Setting the Heating Programmes
4.2 electing a programme type and a default programme
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OK
Select
CH RUN
DAY/TIME DHW
1
OK
2
OK
3
OK
4
Press OK.
Press + four times until
program type is displayed.
Press OK.
With the + & - buttons, scroll
through and select
programme type.
Press OK to select.
OK
5
OK
6
Press +.
OK
7
With the + & - buttons, scroll through and
select setting (STD,HOME or ECO).
Press OK to select.
Press + three times to leave the menu and
save your settings.
Press OK to select.
Press the SELECT
buttons until
RUN light is lit.
Press and hold + & -
buttons together for
10 seconds.

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4. Setting the Heating Programmes
4.3 Weekly programming - days or blocks for central heating and domestic hot water
7212552
OK
Thu Fri Sat SunWedTueMon
ON1
am
Select
CH RUN
DAY/TIME DHW
On DAILY programme, all days are automatically
selected and the setting for the first ON period is
displayed.
Go to Section 4.6.
OK
Mon
Days
Select
CH RUN
DAY/TIME DHW
1Press the SELECT
buttons until DHW or
CH light is lit.
Use +/- to choose a
day to set the
programme for.
Press OK.
OK
Mon Tue Wed Thu Fri
Days
Press the SELECT buttons until the PRG light is lit.
On 5-2 programme, Monday - riday can be selected
and Saturday - Sunday selected as separate blocks.
Use +/- to choose the required block of days.
Press OK. Go to Section 4.6.
OK
Mon
2
To set the programmer
for more than one day,
press OK.
OK
Mon
4
OK
Mon Tue
Days
3
Use +/- to choose
additional days.
Press OK.
Repeat this process
until all the desired days
have been selected. On the last day selected,
choose NO for ADD
DAYS and press OK.
Go to Section 4.6
You have the option to edit each day individually or you can create dayblocks, e.g. Tue, Wed, ri
and Sat, where you can set the same ON and O sequence.
Days you do not select will keep the preset values.
4.4 5-2 programming
4.5 Daily programming

4. Setting the Heating Programmes
4.6 etting time periods
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OK
Thu Fri Sat SunWedTueMon
ON1
am
Select
CH RUN
DAY/TIME DHW
1Once the required
days have been
selected, the first ON
time is displayed.
Press + & - to
adjust ON1 time.
Press OK.
OK
Thu Fri Sat SunWedTueMon
OFF1
am
2
Press + & - to
adjust O 1 time.
Press OK.
OK
Thu Fri Sat SunWedTueMon
ON2
pm
3
OK
Thu Fri Sat SunWedTueMon
OFF2
pm
4
Press + & - to
adjust O 2 time.
Press OK.
Press + & - to
adjust ON2 time.
Press OK.
OK
Thu Fri Sat SunWedTueMon
ON3
pm
Select
CH RUN
DAY/TIME DHW
5
OK
Thu Fri Sat SunWedTueMon
OFF3
pm
6
7
Press + & - to
adjust O 3 time.
Press OK.
The screen returns to SELECT
DAYS (or to ON1 for DAILY
programmes).
Press the SELECT buttons until
RUN light is lit.
The programme is now saved.
Press + & - to
adjust ON3 time.
Press OK.
If you make any changes, you must
press OK to confirm ALL ON/O pairs
before pressing the SELECT button to
return to the RUN mode otherwise your
changes will be lost.

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5. Operating Mode
7212552
5.1 Using the mode button
The operating mode may only be changed when RUN
mode is activated (green indicator lamp RUN must be ON).
Pressing the MODE button cycles through the following
options:
OFF The system will remain OFF.
AUTO The system will be switched ON and OFF
according to the set programme.
ONCE The heating will come on at the first programmed
ON time and go OFF at the last programmed
OFF time.
CONT The system will remain ON continuously.
5.2 Override mode
The Override function (temporary programme override)
allows the user to end the current running programme
prematurely or start a programme running before its
scheduled start. This depends on the current channel
status. The Override function applies only to the current
program and remains active until the next programme
change. After that, the programmer returns to AUTO mode.
The Override function is only available when the device is
running in AUTO and ONCE operating mode.
Press OVERRIDE once to activate.
Press OVERRIDE again to cancel.
5.3 Extra hour mode
The extra hour button allows you to switch the system ON
for up to 3 extra hours without altering the programme.
When the blue central heating indicator lamp is O ,
pressing the EXTRA HOUR button switches the heating
ON for just one hour. When the blue central heating
indicator lamp is ON, pressing an EXTRA HOUR button
extends the programmed ON period by one hour. urther
presses of the EXTRA HOUR button will increase the extra
hour period by one hour for each button press, up to a
maximum of 3 hours. To cancel the extra hours, press the
EXTRA HOUR button until the message EXT HOUR
disappears from the display. The system returns to
previous status.
OFF OFFOFF ONON
OFF
OFF
Example 1
Example
AUTO mode
OFF
Back to AUTO
ONON
ON OFF
OFF
Example 2
OFF
Back to AUTO
ON
OVERRIDE
OVERRIDE
OK
Select
CH RUN
DAY/TIME DHW
Override
HEATINGHOT WATER
Extra Hour
Mode
OFF
AUTO
ONCE
CONT
EXT HOUR
+1
+2
+3
ON1
OFF
AUTO
ONCE
CONT
EXT HOUR
+1
+2
+3
ON1
Override
Extra Hour
Mode
OFF OFFOFF ONON
ON ON
OFF OFFOFF
(1 to 3 hours)
(1 to 3 hours)
Example 1
OFF
ON
ON OFFOFF
Example 2
OFFON
Extra Hour
Extra Hour
Example
AUTO mode

5. Operating Mode
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5.4 Holiday mode
The Holiday function allows you to switch O
your heating system when you are away from
home, but resumes normal operation on the day
of your return.
1. Make sure the device is working in RUN
mode.
2. Press the HOLIDAY button.
3. Select desired numbers of days, + or - and
confirm with OK.
Holiday mode is activated.
To cancel the Holiday function, just press the
HOLIDAY button again. If you use the holiday
function during winter you should ensure that you
have a secondary frost protection device in your
system to prevent frost damage.
OK
OFF
AUTO
ONCE
CONT
+1
+2
+3
ON1
Holidays
Select
CH RUN
DAY/TIME DHW

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6. Installer Information
7212552
6.1 Installer menu
The programmer has a special installer’s menu
where some features can be adjusted to suit your
lifestyle or preferences. To access to installers
menu (INST MENU) the device must be working
RUN mode (green indicator lamp RUN must be
ON).
To save your settings, continue scrolling through
the menu options with + key, until you once again
see INST MENU / – OK + and leave the
installer’s menu with the + key.
To cancel the installer’s menu, press the select
button.
The following settings are possible:
OK
Select
CH RUN
DAY/TIME DHW
1
OK
2
OK
3
Press the SELECT
buttons until
RUN light is lit.
Press and hold + & - buttons
together for 10 seconds. Press OK
Press + or - to scroll
through installer menu

6. Installer Information
6.1 Installer menu
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7212552
DIGI CLOCK: Shows the current time (hours/minutes) in a digital and analogue clock format.
Setting possibilities:
NO: Digital clock not shown (Default value).
YES: Digital clock shown. If digital clock is set YES, you can choose between 12 HRS (AM-PM) or
24 HRS format.
BACKLIGHT: Setting possibilities:
PERMANENT ON: Backlight always ON.
PERMANENT O : Backlight always O .
BUTTON PRESSED: Backlight ON when any pushbutton is pressed. Backlight goes O 20
seconds after the last button press (Default value).
/W CHANGE: Automatic Summer/Winter time change. Summer time starts on the last Sunday of
March (1:00 am to 2:00 am) and ends on last Sunday of October (2:00am to 1:00am), then Winter
time starts.
Setting possibilities:
ON: S/W time change will be done automatically (Default).
OFF: S/W time change must be done manually.
PROG TYPE: Menu to select daily, week-weekend, weekly programming. This value will be applied
to both central heating and domestic hot water programming method.
Setting possibilities:
Daily: All days (Monday - Sunday) are programmed with the same ON/O time schedule.
Weekly: You can program each day (Monday, Tuesday, ...) with a different ON/O time schedule
5-2: You can program Monday - riday with a ON/O time schedule and Saturday - Sunday with
a different one.
NR PERIOD : The number of adjustable time periods defined by ON-O pairs to control central
heating or domestic hot water.
Setting possibilities:
3 ON-O : adjust maximum 3 ON-O time periods (Default value).
2 ON-O : adjust maximum of 2 ON-O time periods.
DEFAULT PRG : Time programme that will appear by default when running in AUTO mode or as
base point to customize according to users lifestyle.
Setting possibilities:
STD
HOME
ECO
or detailed explanation of the profiles, see Section 4.1 “Running a default programme”
PUMP GRAVITY: Fully pumped systems (PUMPED) (Default value):
Central heating (CH) and domestic hot water (DHW) channels run independently.
Gravity systems (GRAVITY):
Domestic hot water (DHW) is ON every time that Central heating (CH) is on.
RE ET: Reset all parameters of installation menu to factory default.
To leave the installer’s menu press the + key.

6. Installer Information
6.2 Disposal
Dispose of the packaging materials correctly according to legal requirements and
regulations.
Please recycle where possible.
Do not throw electrical and electronic components in the bin. These should be taken to
a recycling centre.
All descriptions and illustrations provided in this leaflet have been
carefully prepared but we reserve the right to make changes and
improvements in our products which may affect the accuracy of the
information contained in this leaflet. All goods are sold subject to our
standard Conditions of Sale which are available on request.
7212552 - 1 (03/14)
BAXI
A Trad i ng Division of B a xi H ating UK L td (3879156)
Brooks Hous , Cov ntry Road, Warwick. CV34 4LL
W bsit www.baxi.co.uk
&o