DANFOSS 103 User Manual

103  
Electro-mechanical 24 hour  
timeswitch for controlling hot water and heating  
(Including Factory Replacement Units FRU)  
Danfoss Heating  
Installation and User Guide  
Installation Instructions  
Please Note:  
This product should only be installed by a qualified  
electrician or competent heating installer, and should be  
in accordance with the current edition of the IEEE wiring  
regulations.  
Product specification  
Specification  
Power supply  
230 Vac 15%, 50 Hz  
1 x SPST, Type 1B  
Switching action  
Max. Switch Rating  
Timing Accuracy  
264Vac, 50/60Hz, 6(2)A  
1 min./month  
IP20  
Enclosure Rating  
Max. Ambient Temperature  
55°C  
Dimensions, mm (W, H, D)  
Design standard  
112 x 135 x 69  
EN 60730-2-7  
Degree 2  
2.5kV  
Control Pollution Situation  
Rated Impulse Voltage  
Ball Pressure Test  
75°C  
3
Installation  
Pre-Selector wheel  
Selector switch  
Plug-in replacement  
module  
Wallplate/Terminal  
block (not with FRU  
units)  
NB. For FRU units - go straight to to point 4 on page 5  
wallplate/  
terminal  
block  
1. Loosen the fixing screw in the  
base of the unit to release the  
grey plastic Wiring Cover. Ensure  
the protective tape over the  
thumbwheel remains in place.  
2. Holding the unit clockface  
downwards, press firmly in the  
centre of the wallplate and slide  
it from the module as shown.  
plug-in  
module  
4
3. Fix the Wallplate/Terminal Block to the wall with  
countersunk No.8 woodscrews or to a steel box to BS 4662.  
1970 or a surface mounting steel or moulded box having  
centres of 23/8(60.3mm).  
4. Referring to the Wiring Diagrams on page 6, connect the  
unit as shown. Ensure that terminals 3 and 6 are linked  
where required (Mains Voltage applications) with insulated  
cable capable of carrying full load current.  
5. Ensure all dust and debris has been cleared away from  
the area, then plug the module firmly into the wallplate  
ensuring that the hook at the top of the wallplate engages  
with the slot at the back of the body. Press the module  
down until it locates solidly.  
6. Cut a cable aperture in the Wiring Cover if necessary;  
replace the Wiring Cover, and tighten the fixing screw.  
7. Switch on Mains & test for correct operation as follows:  
i)  
ii)  
Remove protective tape from pre-selector wheel.  
Remove dial cover & rotate the clock dial two  
complete revolutions to clear the mechanism.  
Check that all positions of the Selector Switch  
and Tappets operate correctly. (See instructions  
in User Booklet.)  
ii)  
8. Replace the dial cover. Finally leave this booklet, containing  
the USER instructions with the Householder.  
9. If the unit is to be left turned off and is in a dusty  
atmosphere, protect the pre-selector wheel by re-affixing  
the protective tape.  
IMPORTANT: Remove tape prior to putting unit into  
service.  
5
Wiring  
TYPICAL EXTERNAL CIRCUITS  
103 Terminals  
103 Terminals  
6
1
3
5
5
6
2
1
3
2
Link  
L
L
N
N
Com  
N
Mains  
Supply  
Mains  
Supply  
Low  
voltage  
room stat  
Room  
Stat  
Low voltage  
supply/return  
Load  
Call  
L
N
Load  
Terminals  
2) Control of Low Voltage Systems  
(e.g. warm air gas valves, low voltage  
burners  
1) Control of Heating Function only  
(Mains Voltage)  
Note: If room thermostat is not required, join  
timeswitch terminals 1 and 2 with a link  
suitable for full load current).  
103 Terminals  
103 Terminals  
6
1
3
5
5
6
2
1
3
2
Link  
L
L
N
N
Com  
N
Com  
N
Mains  
Supply  
Mains  
Supply  
Room  
Stat  
Call  
Room  
Stat  
Call  
L
N
L
N
N
L
Input Output  
Boiler Terminals  
Boiler  
Terminals  
Pump  
Terminals  
3) Typical gas or oil fired heating system 4) Typical control of heating when used with  
with gravity hot water primary and  
pumped heating  
combination type boilers  
6
The text below has been edited and approved  
by the Plain English Campaign, who has issued a Crystal  
Mark to be displayed with it.  
What is a programmer?  
... an explanation for householders.  
Programmers allow you to set ‘On’ and ‘Off’ 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 ‘Off’ 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 ‘Onand ‘Offheating 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.  
Please note:  
A timeswitch is a single channel programmer. It will allow you to set  
your system’s On and Off periods.  
7
User Instructions  
Your timeswitch  
Your 103 timeswitch has one time output which can be used to  
control your heating and hot water at the same times.  
Normally the 103 provides 2 ON periods and 2 OFF periods each  
day. However 1 ON and 1 OFF period can be obtained by using  
the Pre-Selector Wheel (see page 12).  
You can choose whether the 103 controls your hot water & heating  
at the programmed times, constantly ON or constantly OFF.  
Preselector wheel  
Dial cover  
Rocker  
switch to  
manually  
select  
programme  
Wiring cover  
operation  
8
Setting the time of day  
The dial on the front of the 103 displays the hours of the day using  
the 24hour clock.  
Remove dial cover (turn  
slightly to the left and pull  
o)  
Turn the dial clockwise  
until the correct time is  
aligned to the TIME mark  
(as shown).  
IMPORTANT: turn the dial clockwise only  
Remember you will have to re-set the time after a power-cut,  
and also when the clocks change in Spring and Autumn.  
!
Setting the programme (Tappets A, B, C, D)  
1. If not already done so, remove the dial cover (turn slightly  
to the left & pull o)  
2. Decide when you want your hot water and heating to come  
on and go off. While gripping the dial knob slide the RED  
tappets to the required ON times and the BLUE tappets to  
the required OFF times (the tappets may be quite stiff to  
move)  
9
Example:  
If you want your system ON between 8am and 10am and again  
between 4pm and 11pm, set the tappets as shown. (A to 8, B to  
10, C to 16, D to 23).  
A = 1st ON  
B = 1st OFF  
C = 2nd ON  
D = 2nd OFF  
Remember:  
Red tappets (A and C) switch ON  
Blue tappets (B and D) switch OFF  
3. Ensure that the installer has removed the protective tape  
covering the pre-selector wheel.  
4. Using the dial knob, rotate the dial completely at least  
twice, clockwise only, to clear the mechanism.  
Note: Tappets can be moved around the dial in a clockwise or anti-  
clockwise direction, as convenient.  
10  
Selecting operating mode  
The Rocker Switch on the side of the unit is used to select how  
your 103 controls your hot water & heating system. You can  
manually select either:  
  hot water & heating follow set programmed  
 hot water & heating constantly ON  
  hot water & heating constantly OFF  
Switch positions  
System OFF  
TIMED - system follows  
CONSTANT - system remains  
set programme  
permanently ON  
The 103 unit is now set,  
and the current status of  
the timeswitch can be seen  
on the wheel at the top  
righthand corner of the unit,  
(e.g. “OFF UNTIL C”).  
11  
Overriding the programe using the Pre-  
Selector wheel  
The pre-selector wheel can be used  
to override the set programme on  
occasions when you need to change  
from your normal heating routine.  
By turning the wheel anti-clockwise  
you can turn the unit ON when it is OFF  
and vice versa.  
Example:  
Your programme is set so that your heating comes on at  
4pm but you arrive home earlier than usual, at 2pm and  
need the heating ON immediately.  
Turn the wheel anti-clockwise until it displays ON UNTIL `D’  
as shown.  
Thus the system is turned ON manually at 2pm but will  
revert to the set programme at the next operation (i.e. OFF  
at 11pm)  
Some other useful pre-selections are:  
ALL DAY ON (1 ON/1 OFF)  
Turn the Wheel to display “ON UNTIL D.  
ALL DAY OFF  
Turn the Wheel to display “OFF UNTIL A.  
Note: Do not operate the pre-selector whilst a tappet is close  
to the TIME mark. This may cause the time of day setting of the  
clock to be altered, and the time would then need to be reset as  
!
shown on page 9.  
12  
13  
14  
15  
Still having problems?  
Call your local heating engineer:  
Name:  
Tel:  
For problems relating to your heating controls ...  
Visit our website:  
Email our technical department:  
Call our technical department  
01234 320 256  
(9:00-5:00 Mon-Thurs, 9:00-4:30 Fri)  
For a large print version of these instructions  
please contact the Marketing Services  
Department on 01234 364 621.  
Danfoss Ltd  
Ampthill Road  
Bedford  
MK42 9ER  
Tel: 01234 364621  
Fax: 01234 219705  
16 Part No 7479v04 01/15  

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