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SET3E
electronic 24-hour programmer for heating & hot water
Installation & User Instructions
2
Index
Installation
Installation
Wiring
Replacement
User
What is a programmer?
Resetting the unit
Setting the clock
Programming the unit
Manual switch settings
3
4-5
6-10
11-13
19
19
20
16
16
17
18
14
15
15
Installation Instructions
Please Note:
This product should only be installed by a qualifi ed electrician or competent heating installer, and should be in accordance with the current edition of the IEEE wiring regulations.
Product specifi cation
Specifi cation
Power supply
Switch action
Switch rating
Timing accuracy
Power reserve
Enclosure rating
Max. ambient temperature
Dimensions, mm (W, H, D)
Design standard
Control Pollution Situation
Rated Impulse Voltage
Ball Pressure Test
230 ± 15% Vac, 50/60Hz
2 x SPDT Type 1B
Max 264Vac, 50/60Hz, 3(1) A
± 1 min/month minimum 10 hours
IP30
45°C
158 x 99 x 38
EN 60730-2-7
Degree 2
2.5kV
75°C
3
Installation
1. Fix the wallplate to the wall or fl ush mounted box as required. The connections are at the top and the vertical centre line of the unit, at the position shown on the diagram below C/L (in line with terminal )
Outline of programmer
C/L
Leave at least 25mm below product
Rear entry cable access
Leave suffi cient space for screwdriver access
Terminal block
Wall or plasterbox fi xing
Cable aperture knockouts
2. Surface cables can only enter from below the unit. If mounted on a fl ush mounted box, cables can enter from the rear through the aperture in the wallplate.
3. For mains voltage applications a link must be fi tted between terminals L, 2 and 5.
4. Whilst the unit does not require an Earth connection, a terminal is provided on the wallplate for Earth
4
5. Referring to the wiring diagrams on page 6-10, connect the unit as shown.
6. The unit is supplied ready for use in systems having
PUMPED primaries. Should the unit be required for
use in a system having GRAVITY primaries, remove the small link located on the rear of the unit. The link, which is clearly labelled can be found on the bottom
RIGHT hand side of the unit.
7. Ensure all dust and debris are cleared from the area.
8. Locate the module on the latches at the bottom of the wallplate and hinge upwards to fully engage the unit connectors into the wallplate. Tighten the two fi xing screws to secure the unit to the wallplate.
9. Before setting the programme, check the unit and circuit.
Switch ON the mains supply and press both WATER
& HEATING rocker switches to the ON position - both red LED’s should now be illuminated. Adjust any remote thermostat to check the services operate correctly.
10. Then press both WATER and HEATING rocker switches to the OFF position and check that both services do not operate.
11. Finally, press both WATER and HEATING rocker
5
Wiring
The following pages contain typical wiring diagrams for various types of systems.
Note: Whilst every attempt has been made to ensure the accuracy of this information it is recommended that the specifi c information relating to the ancillary controls is obtained from the manufacturers concerned.
SET3E
2E
LS
A
TE
6
NOTE: For mains voltage applications links must be fi tted between terminals L, 2 and 5
SET3E Gravity
Typical gravity DHW pumped HTG
Mains
Supply
Programmer
Terminals
N
L
3 amp fuse
D.H.W.
HTG
ON OFF ON OFF
N L 1 2 3 4 5 6
Links
Room
Stat
N
Boiler
N N
Pump
SET3E Pumped
Typical fully pumped system with spring return zone valve in HTG
D.H.W.
HTG
Programmer
Terminals
ON OFF ON OFF
N L 1 2 3 4 5 6
Mains
Supply
N
L
Links
3 amp fuse
Cyl.
Stat
Room
Stat
N
Boiler
& Pump
N N
S.R.Z.V in HTG
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat; 2 x HP22 or HP28 motorised zone valve with spring return actuator and SPST auxiliary switch
Typical gravity DHW pumped HTG with spring return zone valve in DHW
D.H.W.
HTG
Programmer
Terminals
ON OFF ON OFF
N L 1 2 3 4 5 6
Mains
Supply
N
L
3 amp fuse
Cyl. Stat
Room
Stat
N
N
S.R.Z.V in DHW
Boiler
N N
Pump
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat; HP28C motorised zone valve with spring return actuator and SPDT auxiliary switch 7
8
Typical fully pumped system with 3-port midposition valve
Mains
Supply
Programmer
Terminals
N
L
3 amp fuse
D.H.W.
HTG
ON OFF ON OFF
N L 1 2 3 4 5 6
Links
Cyl.
Stat
Room
Stat
N
Boiler
& Pump
N N 3-port mid pos valve
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat
HS3 3-port mid-position valve with spring return actuator
Typical fully pumped system with spring return zone valve in each service
Mains
Supply
Programmer
Terminals
N
L
3 amp fuse
D.H.W.
HTG
ON OFF ON OFF
N L 1 2 3 4 5 6
Links
Cyl.
Stat
Room
Stat
N
N
S.R.Z.V. in DHW
Boiler
N
N
S.R.Z.V. in HTG
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat
2 x HP22 or HP28 motorised zone valve with spring return actuator and
SPST auxiliary switch
9
10
Typical fully pumped system with fully motorised zone valve in each service
Mains
Supply
Programmer
Terminals
N
L
3 amp fuse
D.H.W.
HTG
ON OFF ON OFF
N L 1 2 3 4 5 6
Links
N
Cyl.
Stat
F.M.Z.V in DHW
Room
Stat
N
Boiler
N
N
F.M.Z.V in HTG
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat
Replacement
Please see overleaf for a table containing replacement wiring information.
Some time controls are connected in different ways depending upon the type of system and/or the controls which are fi tted. Consult the column headed “NOTE: The
conversion applies only if....” to determine whether the
SET3E GRAVITY or PUMPED is the correct conversion.
If there is any doubt about the way in which the existing programmer is connected, please contact our Technical
Services Department before proceeding with replacement.
Note: The SET3E is a direct plug-in replacement for a
Danfoss Randall SET5, although it does not offer 5/2
day programming option
11
12
13
14
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 ‘On’ and ‘Off’ 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.
User Instructions
Your programmer
The SET3E allows you to switch your hot water & heating on and off automatically, at times that suit you.
The programmer provides 2 ON times and 2 OFF times per day, and by the use of a simple rocker switch you can run your heating and hot water separately, to suit your lifestyle.
W and
ADVANCE button
X and
+1 HOUR button
Slider switch
Resetting the Unit
Rocker switches
IMPORTANT: Before you start you should reset the unit. This will reinstate the preset programmes.
To do this:
move slide switch to SET TIME position
using something non-metallic (i.e a matchstick) press into the small hole as shown opposite
RESET
15
16
Setting the Clock
Move the slider to SET TIME
position
Use
W and X keys to set the
Preset programme
The unit is supplied with the following preset programme which will be active after the unit has been RESET (see page 14):
ON at 6:30am, OFF at 8:30am.
ON at 5:00pm, OFF at 10:30pm.
To alter these times to suit your requirements, follow the instructions on page 16.
Accepting the preset programmes
If you are happy to use the preset programmes above you don’t need to do anything else.
Just return the slider to the
RUN position.
Programming the unit
You can programme your heating and hot water to come on and go off twice a day, to suit your requirements. To programme your unit:
Move the slider to the 1st ON position and use
W and X keys to set the time you want the programmer to fi rst come on
Move the slider to the 1st OFF position and use
W and X keys to set the time you want the
Move the slider to the 2nd ON position and use
W and X keys to set the time you want the programmer to next come on
Move the slider to the 2nd OFF position and use
W and X keys to set the time you want the programmer to next go off
!
Remember to return the slider switch to the RUN position after programming
17
Temporary User Overrides
Sometimes you may need to change the way you use your system temporarily, i.e. due to unusually cold weather, increased hot water requirements. The SET3E has two convenient overrides which can be selected without affecting the set programme.
Note: This will only work when the slider switch is in the
RUN position and will automatically cancel at the start of the next programmed event.
Advance
once to move forward to the next programmed event
If the system is on it will go off.
If it is off it will come on
A bar on the left of the LCD will remind you that you have selected Advance
To cancel the override, press the
ADVANCE button again
18
1 Hour Extra
if you need an extra hour of operation
If the system is off it will come on. If it is already on it will add an extra hour so the system stays on for an extra hour
A bar on the right of the LCD will remind you that you have selected +1 hour
To cancel the override, press the
+1 HOUR button again
Manual Switch Settings
The 2 rocker switches are used to select how the SET3E controls
your hot water and heating. The hot
water and heating systems can be controlled independently but share the same time settings.
WATER switch
OFF - the hot water is manually switched OFF and will stay off until you change the position of the switch
TIMED - the hot water will come on and go off at the times you have programmed, plus any temporary overrides
CONSTANT - the hot water will come on manually and stay on constantly until you change the position of the switch
HEATING switch
OFF - the heating is manually switched OFF and will stay off until you change the position of the switch
TIMED - the heating will come on and go off at the times you have programmed, plus any temporary overrides
CONSTANT - the heating will come on manually and stay on constantly until you change the position of the switch
Memory Backup
IMPORTANT
If the SET3E is ever disconnected from the mains the display will go blank but the unit will keep your programme time and settings for up to 10 hours.
When power is restored the unit will continue to function as normal.
For power cuts or disconnections of greater then 10 hours, when mains power is restored you must reset the unit (see page 14). This will reinstate the factory preset programmes and set the time of day to noon.
19
Still having problems?
Call your local heating engineer:
Name:
Tel:
Visit our website:
www.danfoss-randall.co.uk
Email our technical department:
Call our technical department
0845 121 7505
(8.45-5.15 Mon-Thurs, 8.45-4.45 Fri)
For a large print version of these instructions please contact the Marketing
Services Department on 0845 121 7400.
20
Danfoss Randall Ltd
Ampthill Road
Bedford
MK42 9ER
Tel: 01234 364621
Fax: 01234 219705
Part No. 8658 Issue 05 02/06 SW REV 6.1
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