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
7212552
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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7212552
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.
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3. Operation & Configuration
3.4 Domestic hot water systems - fully pumped system or gravity-fed system
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7212552
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
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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
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