1.0 Fixing & Operating Instructions - Mechanical & Digital Timer
1.1 Installation
1.1.1 General fitting instructions - Mechanical & Digtial Timer
WARNING: Isolate the power supply before proceeding.
Remove
the Facia
Infill Panel
1) Remove &
Discard Bridge
Connector
Fit the new Facia
Infill Panel
0 2 4 6 8 10 12
24h
1
2
3
4
5
prog
6
7
1
+ -
Example A
2) Fit Timer
Menu OK
Res
+1h
14
16
18
20
22
24
Example A shows
how the display
will appear when
the heating is set
to come ON at
07:00 every morning.
Note: The IP rating of the boiler with a plug-in accessory fitted is IP20.
Ensure siting is appropriate before installing this accessory.
1. Ensure that the electrical supply to the boiler is isolated.
2. Using a suitable flat bladed screwdriver prise the Blanking Plate from the
front left-hand side of the facia assemby.
3. Remove the two screws securing the Bridge Connector. Discard the
Connector and retain the screws.
4. Engage the male spade terminals of the Timer in the female connectors
on the facia. Secure the Timer with the screws previously removed.
5. Fit the new Facia Infill Panel over the Timer and clip into place.
6. Continue with the installation and commissioning of the appliance.
Reinstate the electrical supply to the appliance. Set the clock as described in
these instructions and according to the requirements of the user. Instruct the
user in the operation and setting of the timer.
1.2 Setting the Digital Timer
1.2.1 General Note
To access the programme settings, press the menu button.
NOTE: Before programming for the first time or to clear existing programmes
press the ‘Res’button with a pencil point or similar.
Whilst setting the programmer any symbol or value which is flashing is the
current option or value to be changed. Options and values are adjusted by
pressing the + or - buttons and then confirmed by pressing OK. If a flashing
value or option is already at the required setting just press OK and continue with
the next choice.
Symbols
= ON Symbol = Manual Mode
= OFF Symbol = Timed Mode
1.2.2 Setting the Time and Day
When the menu button is pressed the symbol '24h' will appear.
Use the + or - button to change the display format from 24 hour to AM/PM if
required. Press OK.
Select the hour with the + or - button and then press OK.
Select the minute with the + or - button and then press OK.
Select the day with the + or - button and then press OK.
(The day is indicated by the numbers vertically at the left hand side of the
display 1 = Monday, 2 = Tuesday etc. Pressing + or - moves the arrow in
the display to the required day).
1.2 Setting the Digital Timer - continued.
0 2 4 6 8 10 12
24h
1
2
3
4
5
prog
6
7
1
+ -
Example B
0 2 4 6 8 10 12
24h
1
2
3
4
5
prog
6
7
1
+ -
Example C
ON times will always
be denoted by an odd
‘prog’ number i.e.‘prog 01’,
‘prog 03’,‘prog 05’ etc. and
the OFF times by even ‘prog
numbers i.e. ‘prog 02’,
‘prog 04’ etc.
Day Indicator
(1 = Monday,
2 = Tuesday etc.)
‘ON’ or ‘OFF’
Display
‘Timed’ or
‘Override’
Display
& ‘Override’
+
Button
-
Fig. 2
Res
Res
Button
14
16
18
20
22
24
Menu OK
+1h
14
16
18
20
22
24
Menu OK
+1h
Programme/Hour Indicator
(bar against number shows
ON period)
0 2 4 6 8 1 0 12
24h
1
2
3
4
5
6
7
Reset
Button
Example B shows
the OFF time that
corresponds with
the ON time in
Example A.
Example C shows
an OFF time that
is only set for days
6 & 7 (Saturday
and Sunday).
Menu OK
Res
+1h
‘Menu’
and ‘OK’
‘Summer’
Buttons
to ‘Winter’
Button
14
16
18
20
22
24
1.2.3 Setting the ON & OFF times
After setting the time/day and pressing OK ‘P 01’ will be displayed. This is the first of
three pre-set programmes available.
P 01: Monday to Sunday, ON at 06:00, OFF at 22:00.
P 02: Monday to Sunday, ON at 07:00, OFF at 12:00, ON at 14:00, OFF at 20:00.
P 03: Monday to Sunday ON at 07:00, OFF at 12:00, ON at 14:00, OFF at 18:00,
ON at 20:00, OFF at 22:00.
P 01, P 02 or P 03 can selected by pressing the + or - buttons then pressing OK.
The first ON time of the programme will be displayed. Press Menu to continue and
return to normal operating mode.
After P 03 it is possible to set your own programme. Using the + or - buttons press
until ‘P --’ is displayed. Press OK and ‘prog 01’ is displayed. By pressing OK
again it allows the first ON time to be set. Using the + or - buttons adjust the hour,
then press OK. Repeat to set the minute.
The arrows at the left of the display will all show. Press the + or - buttons to select
one of the following options:1-7 (Mon. - Sun.), 1-6 (Mon. - Sat.),1-5 (Mon. - Fri.), 6 & 7 (Sat. & Sun.) or any
individual day until the required days are displayed.
Once the required day or group of days has been selected press OK.
This programmed ON time is now stored in the memory. The next option is ‘prog
02’, which is an OFF time. This is set the same way as the ON time, the day or
days selection being carried forwards. When OK is pressed the OFF time is stored
in the memory and ‘prog 03’ displayed. This is the next ON time. Continue
programming until all selections are complete. Press MENU to return to the normal
operating mode. See back page for examples.
Note: Programmed ON and OFF times are set as pairs. You cannot set different
days for the OFF time when compared to the ON time (i.e. if the first ON time for
Monday - Friday is 07:00, the corresponding OFF time must also be set for Monday
- Friday)
1.2.4 Manual Override
To override the programme for the current period (ON or OFF), press the
button.
The programme will continue as normal following the next ON or OFF time setting.
1.2.5 To Change the Clock from Summer to Winter (BST)
Using a pencil point or similar press the +1h button to add one hour to the display
during summer, and to deduct one hour for winter operation
1.2.6 Power Backup & Additional Display Features
In instances of mains power interruption the timer integral batter y ensures that the
time of day will continue to be displayed and the switching programme operates.
Some parts of the display will not be visible until mains power is restored to the unit.
The display also has further g
raphics which show the approximate times of ON
operation, in the form of arrows against the numbers along the top and right hand
side. Also shown is a switch output indicator at the bottom right. The arrow will be
above either the clock symbol (indicating timed output) or the hand symbol
(indicating manual override)..
1.2.7 To Review or Alter Existing Selections
Press MENU and then press OK four times. The first programme ON time is
displayed (‘prog 01’). To check other programme ON and OFF times use the + and
- buttons to view them. To alter any programme ON or OFF time press OK and the
value to be changed will flash. This can be changed with + or - by the same process
as described above in ‘Setting the ON & OFF times’.
1.2.8 To Cancel a Time Period
Follow the procedure ‘To Review or Alter Existing Selections’. With the ON time to
be cancelled displayed change the hour value to two dashes (--). These will appear
once the hour has been set beyond 23. The progr amme will be deleted as will the
corresponding paired entry.
1.3 Setting the Electro-mechanical Timer
On Position
24
23
22
Off Position
Rotate to adjust time
3
4
5
6
7
8
0
9
10
11
Off
1
24
2
23
22
12
39
16
15
14
12
13
Timed
9
10
11
21
Fig. 3
21
20
19
18
17
Constant
Time
Pointer
12
14
13
The Electro-Mechanical Timer allows the central heating system to be set
ON or OFF every 15 minutes.
1.3.1 Three Position Switch
Using the three position switch the timer will allow either constant
operation, timed operation or central heating off. Move the switch button by
sliding to the desired position.
Constant: The heating will be on constantly irrespective of the
I
position of the tappets. The heating will be controlled by the main
thermostat on the appliance and/or any external controls.
Timed: The heating will operate according to the position of the
tappets and be controlled as above.
O
Off: No central heating. Domestic hot water will operate on
demand.
1.3.2 To Set the Time of Day
Turn the timer outer bezel clockwise, to align the pointer with the correct time
to the nearest 15 minutes ensuring that A.M./P.M. is considered.
Do not at any time attempt to turn the bezel anti-clockwise.
To put the clock back for winter, turn through 23hr clockwise.
1.3.3 To Set the Timed Heating Programme
Decide which times of the day the central heating is required. The heating
will operate when the white tappets are set to the outer edge of the bezel.
To ensure the heating stays OFF set the required tappets inwards towards
the centre of the bezel. Each tappet represents 15 minutes.
For example: If the heating is not required between 10 A.M. and 11 A.M. the
four tappets anticlockwise from the10 A.M. will be set inwards (Fig. 4).
United Kingdom
en
1
2
3
4
5
6
7
+ -
7658276 Mechanical 24hr Timer
7658523 Digital 7 day Timer
Instruction manual for installers and users
0 2 4 6 8 10 12
24h
Res
Menu OK
+1h
14
16
18
20
22
24
1
24
2
3
4
5
6
7
8
0
9
10
11
23
22
12
21
20
19
39
18
17
16
15
14
12
13
Fig. 4
Baxi Customer Support
0344 871 1545
Baxi
Brooks House,
Coventry Road,
Warwick, CV34 4LL
baxi.co.uk
7658277-01 (4/14)
Plug-in Single Channel Mechanical & Digital Timer
These instructions should be read in conjunction with the Boiler Installation and Service Instructions.
Please leave with the user when completed.