Danfoss 102 Assembly instructions

1
GP Programmers & Timeswitches
102, 103 and 106 Models, for time control of Domestic Central
Heating Systems.
Wallplate/
Terminal Block
Plug-in Module
INSTALLATION AND WIRING INSTRUCTIONS
SPECIFICATIONS
Power Supply : 220/240Vac, 50/Hz
Switch Action : 1 x SPST, Type 1B
Switch Rating : 220/240Vac, 50/60Hz, 6(2)A.
Timing Accuracy : ± 1 min./month
Enclosure Rating : IP20
Pollution Situation : Degree 2
Max. Ambient Temp. : 55°C
Designed to meet BS EN60730-2-7
Dimensions : 112mm wide, 135mm high, 69mm deep
Rated Impulse voltage : 2.5kV
Ball Pressure Test : 75°C
The unit must be installed by a competent electrician and the installation
should conform to I.E.E. Regulations. This unit should be wired via full
disconnectinaccordancewithBSEN60730-1, e.g.viaaplug and unswitched
socket or double pole switch outlet with neon.
INSTALLATION INSTRUCTIONS
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.
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 theWiring Diagrams overleaf, 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 have 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. CutacableapertureintheWiringCoverif necessary;replacetheWiring
Cover, and tighten the fixing screw.
7. Switch on Mains and test for correct operation as follows:
i) Remove protective tape from the pre-selector wheel.
ii) Remove the dial cover and rotate the clock dial two complete
revolutions to clear the mechanism.
ii) CheckthatallpositionsoftheSelector Switch andTappetsoperate
correctly. (See instructions in User Booklet.)
8. Replace the dial cover. Finally leave 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.
Plug-in Replacement
Module
Selector Switch
Wallplate/Terminal Block
Pre-Selector Wheel
This product complies with the following EC Directives:
Electro-Magnetic Compatibility Directive.
(EMC) (2004/108/EC)
Low Voltage Directive.
(LVD) (2006/95/EC)

2
Danfoss Randall can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss Randall reserves
the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without
subsequent changes being necessary in specifications already agreed.
Danfoss Ltd
Ampthill Road,
Bedford MK42 9ER.
Telephone: [phone] Fax: [phone]
Email: [email protected]
Website: www.heating.danfoss.co.uk
Part No: 7459v18 06/08
INTERNAL WIRING MODEL 102 INTERNAL WIRING MODEL 103
Water
Output
Heating
Output
L
N
Mains
Supply
12 3 5 6
HW
W
OFF
NOTE: Terminals 3 and 6 MUST be linked externally
(except when voltage free switch contacts are required).
Terminals
Output
L
N
Mains
Supply
12 3 5 6
NOTE: Terminals 3 and 6 should (in most instances) be linked externally.
Exceptions are when control circuits are operating at low voltage (e.g. 24 volts) or for certain
Combination Type Boilers (see Boiler Manufacturers Handbook).
Terminals
CONSTANT
TIMED
OFF
TYPICAL EXTERNAL CIRCUITS TYPICAL EXTERNAL CIRCUITS
102 Terminals 102 Terminals
L
N
Mains
Supply
L N Boiler
L N
123 56
Pump
N
Room
Stat
Com
Call
Link
1) Typical domestic gas or oil fired system with
gravity hot water and pumped heating. (If a
room stat is not requires wire pump L directly to
terminal 2 on the 102).
2) Fully pumped system with cylinder stat in HW
circuit and room stat and 2 port spring return
zone valve in heating circuit.
L
N
Mains
Supply
L N
N
Room
Stat
Com
Call
Link
123 56
To Boiler & Pump
N
L
Motor
HP2 spring return
zone valve
Blue
Grey
Brown
C
12
Cylinder Stat L641A
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).
2) Control of Low Voltage Systems
(e.g. warm air gas valves, low voltage
burners).
L
N
Mains
Supply
L N
123 56
N
Com
Call
Link L
N
Mains
Supply
123 56
103 Terminals 103 Terminals
Room
Stat
Load
Terminals
Low voltage
supply
Load
Low
voltage
room stat
3) Typical gas or oil fired heating system with
gravity hot water primary and pumped heating.
4) Typical control of heating when used with
combination type boilers.
123 56
NOTE: Ease of installation can be achieved by using the Danfoss Randall
Wiring Centre which is obtainable from most Builders Merchants and
Distributors.
IF A WIRING CENTRE IS USED, follow the installation instructions included
with the unit and not the wiring diagrams shown on this page.
123 56
L
N
Mains
Supply
N
Call
Link
Room
Stat
Pump
Terminals
L N
Boiler
Terminals
L
N
Mains
Supply
N
CallRoom
Stat
Input Output N L
Boiler Terminals
Com Com
103 Terminals 103 Terminals
INTERNAL WIRING MODEL 106
12 3 5 6
Terminals
4
Water
Priority Heating
Priority
OFF
L
N
To boiler & pump
Fully pumped system with 3 port (2 way) diverter valve.
L N Orange not
connected
(make safe)
If Danfoss Randall HS3 valve is used
connect valve brown and grey to
terminal 2 of 106
Room Stat
COM
SAT CALL
Cylinder Stat
COM
SAT
CALL
L
N
Typical
External
Circuit
Honeywell 'W' plan or Satchwell 'K' plan.
Orange
L N