Danfoss 103E7 User manual

103E7
7-Day Electronic Timeswitch
for Controlling Hot Water and Heating
(Including Factory Replacement Units FRU)
Installation Guide
Danfoss Heating

GB
103E7
2
For a large print version of these instructions
please call Marketing on 01234 364 621.
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

GB
Danfoss Heating 3
103E7
7-Day Electronic Timeswitch
for Controlling Hot Water and Heating
Index
1.0 Installation Overview..............................................................................4
2.0 Product Specication..............................................................................4
3.0 Installation ...................................................................................................4
3.1 Wiring.....................................................................................................6
4.0 Replacement............................................................................................. 10

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103E7
4
Specication
Power Supply 230Vac, ± 15%, 50 Hz
Switching Action 1 x SPST, Type 1B
Switch Rating 264Vac, 50/60Hz, 3(1)A
Setting/Running Accuracy ±1 min./month
Power Reserve Minimum 24 hours
Max. Ambient Temperature 45°C
Dimensions, mm (W, H, D) 102 x 136 x 47
Design Standard EN 60730-2-7
Control Pollution Situation Degree 2
Rated Impulse Voltage 2.5kV
Ball Pressure Test 75°C
NB. For FRU units - go straight to point 6.
1. Loosen the xing screw in the base of the unit to release the
Wiring Cover.
2. Holding the unit face downwards, press rmly in the centre of
the wallplate and slide it apart and lift it from the module.
1.0 Installation Overview
2.0 Product Specication
Please Note:
This product should only be installed by a qualied electrician or
competent heating installer and should be in accordance with the
current edition of the IEEE wiring regulations.
3.0 Installation

GB
Danfoss Heating 5
3. Fix the wallplate and terminal block to the wall, or plaster box, as
required. Ensure that the screw heads do not protrude beyond
the vertical centre rib of the wallplate, or this will prevent the
module correctly locating onto the wallplate.
4. Surface cables can only enter from below the unit. Cut an
appropriate cable aperture in the wiring cover. If the wallplate is
mounted on a plaster box, cables can enter from the rear below
the terminal block.
5. Electrical connections are simplied by using a Wiring Centre.
However, if this is not used, the wallplate terminal identication
is as shown.
If the system being controlled is 230 Vac, then terminals 3 and L
must be linked with insulated cable capable of carrying full load
current. Whilst the unit does not require an earth connection,
a terminal is provided on the wallplate for earth continuity
purposes.
6. Refer to the wiring diagrams on page 6-9, connect the unit as
shown.
Screw xing holes
(screwheads MUST NOT
protrude above centre rib)
Vertical
centre rib
Wallplate & Terminals
Load Mains Supply (via 3 amp fuse)
ON SPARE COM N L
123 5 6

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103E7
6
7. Find out from the user whether the unit is required to operate
in 7-day mode (factory preset) or weekday/weekend mode
(5/2 day). To convert to 5/2 day mode remove the small two-
way connector from the pins towards the left of the recess on
the rear of the module, then press the button marked R/S under
the ap to RESET the unit.
8. Ensure all dust and debris are cleared from the area. Plug the
module into the wallplate by locating it onto the wallplate and,
when ush with it, sliding it down, ensure the hook at the top of
the wallplate engages with the slot at the back of the module.
9. Before setting the programme, check the unit and circuit. Press
the SELECT button until the bar in the display lines up with the
word ON. Adjust the remote thermostats to check the system
operates correctly.
10. Then press the SELECT button until the bar lines up with the
word OFF and check the system does not operate.
11. When the circuit check has been completed, replace the wiring
cover and tighten the xing screw. Cut any cable aperture in the
wiring cover which may be necessary to accommodate surface
mounted cables.
12. Finally set time of day and programmes required, noting that
the unit is supplied with a pre-set programme, see User Guide.
3.1 Wiring

GB
Danfoss Heating 7
12356
L
N
MAINS
SUPPLY
FUSED
3 AMP
L N
COM CALL
ROOM
' S TAT
N
LINK
PUMP
TERMINALS
103E5
TERMINALS
L N L N
COM CALL
N
ROOM
' S TAT
L
N
BOILER
TERMINALS
PUMP
TERMINALS
LINK
103E5
TERMINALS
MAINS
SUPPLY
FUSED
3 AMP
123 56
Typical Gravity DHW with Pumped Heating
Typical Control of Pump for Central Heating
on a Solid Fuel System
103E7
TERMINALS
103E7
TERMINALS

GB
103E7
8
12356
103E5
TERMINALS
L
N
LOAD
MAINS
SUPPLY
FUSED
3 AMP
LOW
VOLTAGE
SUPPLY
COM CALL
LOW
VOLTAGE
ROOM
' S TAT
COM CALL
N
ROOM
' S TAT
L N BOILER
TERMINALS L N PUMP TERMINALS
L
N
103E5
TERMINALS
MAINS
SUPPLY
FUSED
3 AMP
123 56
LINK
Typical Heating Only System,
Boiler and Pump Control
Typical Control of Low Voltage System requiring
Voltage Free Contacts
103E7
TERMINALS
103E7
TERMINALS

GB
Danfoss Heating 9
103E5
TERMINALS
123 56
MID-POSITION VALVE L N
L
N
MAINS
SUPPLY
FUSED
3 AMP
BOILER &
PUMP
TERMINALS
RED OR
ORANGE
WHITE
OR
BROWN
BLUE GREY
ROOM
' S TAT CYL.
' S TAT
SAT
CALL
COM
N
LINK
123 56
COM CALL
N
ROOM
' S TAT
INPUT OUTPUT NL
L
N
103E7
TERMINALS
MAINS
SUPPLY
FUSED
3 AMP
COMBI BOILER
TERMINALS
Typical control of Heating when provided by
Combination type Boiler (see note below)
Typical Heating and Hot Water Control System
using 3 Port Mid-position Valve
103E7
TERMINALS
103E7
TERMINALS
Note: Connection must only be made if input/output of boiler are
230V signals

GB
103E7
10
DANFOSS
RANDALL 103E7
LOAD MAINS SUPPLY
(via 3 amp fuse)
An additional terminal block is
required where these disconnected
leads (or pairs of leads) should be
terminated
ON SPARE COM
1 2 3 5 (N) 6 (L) A B C D
RANDALL 103, 103E, 103E7 1 2 3 5 6 RANDALL 3020 4 2 - 1,7 6 3 5 RANDALL TSR2 5 4 1 3 2 6 7 GRASSLIN 45, 45A, 45E 4 - 3 2 1 HORSTMANN 424 EMERALD & PEARL AUTO RANGE 4 2 3 N L,1 5 HORSTMANN 423 PEARL, EMERALD & TOPAZ 41 3 NL256
SANGAMO S254 Form 2, S408 Form 5, S251 Form 2
LOAD - - N L
SANGAMO S610 F2, S611 F2, S612 F2, S408 F4, S408 F6, S253 F2, S255 F2
LOAD - SWITCH
LIVE NMOTOR
LIVE
SANGAMO S409 Form 8 2 1 6 3,N 5,L

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Danfoss Heating 11
DANFOSS
RANDALL 103E7
LOAD MAINS SUPPLY
(via 3 amp fuse)
An additional terminal block is
required where these disconnected
leads (or pairs of leads) should be
terminated
ON SPARE COM
1 2 3 5 (N) 6 (L) A B C D
SANGAMO/RANDALL SET 1 4 2 5 N L SMITHS IND. MKI, MKII P3 P1 P2 N L SMITHS IND. CENTROLLER 30 4,5 3 - 1 2 6 SMITHS IND. CENTROLLER 40 4,5 3 - 1 2 SWITCHMASTER 300 1 2 4 N L 3 TOWERCHRON TC 7 3 4 2 1 8 9 10 11
VENNER VENNERETTE MKIIA LOAD - LINE N L VENNER VENNERETTE MKIVA 1- 4 23
VENNER VENNERON VENNERON P 4- 1 32

Part No. 2758v01 02/12
Danfoss Ltd.
Ampthill Road
Bedford MK42 9ER
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.heating.danfoss.co.uk