Danfoss SET 3E User manual

SET 3E
Electronic 24 Hour Programmer
for Heating and Hot Water
Installation Guide
Danfoss Heating
MAKING MODERN LIVING POSSIBLE

SET3E
2
For a large print version of these instructions
please call Marketing on 0845 121 7400.
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other
printed material. All trademarks in this material are property of the respective companies.
Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
®
Certification Mark

Danfoss Heating 3
GB
Installation Instructions
SET3E
Electronic 24-Hour Programmer
for Heating and Hot Water
Index
1.0 Installation Guide .....................................................................................4
2.0 System Overview.......................................................................................4
3.0 Installation ...................................................................................................4
3.1 Wiring.....................................................................................................6
3.2 Typical Gravity DHW Pumped HTG .............................................7
3.3 Typical Fully Pumped System with Spring Return Zone
Valve in Heating .................................................................................8
3.4 Typical Gravity DHW Pumped HTG with Spring Return
Zone Valve in DHW............................................................................9
3.5 Typical Fully Pumped System with 3-Port Mid-Position
Valve .................................................................................................... 10
3.6 Typical Fully Pumped System with Spring Return Zone
Valve in each Service ..................................................................... 11
3.7 Typical Fully Pumped System with Fully Motorised
Zone Valve in each Service.......................................................... 12
4.0 Replacement............................................................................................. 13

SET3E
4
GB
Specification
Power supply 230 ± 15% Vac, 50/60Hz
Switch action 2 x SPDT Type 1B
Switch rating
Max 264Vac, 50/60Hz, 3(1) A
Timing accuracy ± 1 min/month
Power reserve minimum 10 hours
Enclosure rating IP30
Max. ambient temperature 45°C
Dimensions, mm (W, H, D) 158 x 99 x 38
Design standard EN 60730-2-7
Control Pollution Situation Degree 2
Rated Impulse Voltage 2.5kV
Ball Pressure Test 75°C
1.0 Installation Guide
2.0 System Overview
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.
1. Fix the wallplate to the wall or flush 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 C/L (in line with
terminal ).
2. Surface cables can only enter from below the unit. If mounted on
a flush mounted box, cables can enter from the rear through the
aperture in the wallplate.
3. For mains voltage applications a link must be fitted 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 continuity purposes.
3.0 Installation

Danfoss Heating 5
GB
5. Referring to the wiring diagrams on page 6-12, 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 fixing 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 switches to
TIMED position prior to programming the unit.
Leave at least
25mm below
product Rear entry
cable access
Cable aperture
knockouts
Wall or
plasterbox
fixing
Terminal
block
Outline of
programmer
Leave sufficient space
for screwdriver access
C/L

SET3E
6
GB
NOTE: For mains voltage applications links must be fitted between
terminals L, 2 and 5.
3.1 Wiring
N/O
ON
NOTES:
FOR SET2E LINK
TERMINALS 1 & 5
FP975 ON A SET
WALLPLATE
NL123456
TIMER
OFF
COM
DHW
ON
N/C
COM
HTG
OFF
N/O N/C
Typical wiring diagrams for various types of systems are shown on
the following pages.
Note: Whilst every attempt has been made to ensure the accuracy of this
information it is recommended that the specific information relating to
the ancillary controls is obtained from the manufacturers concerned.

Danfoss Heating 7
GB
DHW = Domestic Hot Water
3.2 Typical Gravity DHW Pumped HTG
N L 1 2 3 4 5 6
3 amp fuse
D.H.W. HTG
ON OFF
Mains
Supply
N
L
Programmer
Terminals
N
NN
Boiler Pump
Room
Stat
ON OFF
Links

SET3E
8
GB
3.3 Typical Fully Pumped System with Spring
Return Zone Valve in Heating
N L 1 2 3 4 5 6
3 amp fuse
D.H.W. HTG
ON OFF
Mains
Supply
N
L
Programmer
Terminals
N
Boiler
& Pump
S.R.Z.V
in HTG
Room
Stat
ON OFF
Cyl.
Stat
NN
Links
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.

Danfoss Heating 9
GB
3.4 Typical Gravity DHW Pumped HTG with
Spring Return Zone Valve in DHW
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.
N L 1 2 3 4 5 6
3 amp fuse
D.H.W. HTG
ON OFF
Mains
Supply
N
L
Programmer
Terminals
N
NN
Boiler Pump
Room
Stat
ON OFF
NS.R.Z.V
in DHW
Cyl.
Stat

SET3E
10
GB
3.5 Typical Fully Pumped System with 3-Port
Mid-Position Valve
N L 1 2 3 4 5 6
3 amp fuse
D.H.W. HTG
ON OFF
Mains
Supply
N
L
Programmer
Terminals
N
N3-port
mid pos
valve
Room
Stat
ON OFF
N
Boiler
& Pump
Cyl.
Stat
Links
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat
HS3 3-port mid-position valve with spring return actuator.