Danfoss 102 Installation And Wiring Instructions page 2

INTERNAL WIRING MODEL 102
W
OFF
HW
1 2
Terminals
Water Heating
Output Output
NOTE: Terminals 3 and 6 MUST be linked externally
(except when voltage free switch contacts are required).
TYPICAL EXTERNAL CIRCUITS
102 Terminals
1 2 3 5
Link
Room
Com Stat
N
Supply
Call
L N
Pump
L N Boiler
1) Typical domestic gas or oil fi red 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).
INTERNAL WIRING MODEL 106
Water
OFF
Priority
Heating
Priority
1 2
Terminals
CALL
SAT
COM
Typical
Cylinder Stat
External
Circuit
Honeywell 'W' plan or Satchwell 'K' plan.
Fully pumped system with 3 port (2 way) diverter valve.
2
3 5 6
102 Terminals
6 1 2 3
Link
L
N
Room
Com Stat
Mains
N
Call
HP2 spring return
zone valve
L N
Brown
C
1 2
Motor
Cylinder Stat L641A
Orange
To Boiler & Pump L
2) Fully pumped system with cylinder stat in HW
circuit and room stat and 2 port spring return
zone valve in heating circuit.
3 4 5 6
SAT
CALL
COM
Room Stat
If Danfoss Randall HS3 valve is used
L
connect valve brown and grey to
terminal 2 of 106
N
To boiler & pump
L N
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 specifi cations already agreed.
Danfoss Ltd
Ampthill Road,
Bedford MK42 9ER.
Telephone: (01234) 364621 Fax: (01234) 219705
Email: ukheating@danfoss.com
Website: www.heating.danfoss.co.uk
INTERNAL WIRING MODEL 103
Terminals
L
N
Mains Output
Supply
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).
103 Terminals
5 6 1 2 3
L
N
Com
Mains
Supply
N
Room
Stat
Call
Blue
Grey
1) Control of Heating Function only (Mains
Voltage)
N
Note: If room thermostat is not required
join timeswitch terminals 1 and 2 with a
link suitable for full load current).
103 Terminals
1 2 3
Com
N
Room
Stat
Call
L N
L
N
Boiler
Terminals
3) Typical gas or oil fi red heating system with
gravity hot water primary and pumped heating.
NOTE: Ease of installation can be achieved by using the Danfoss Randall
Wiring Centre which is obtainable from most Builders Merchants and
Orange not
Distributors.
connected
(make safe)
IF A WIRING CENTRE IS USED, follow the installation instructions included
with the unit and not the wiring diagrams shown on this page.
TIMED
OFF
CONSTANT
1 2 3
TYPICAL EXTERNAL CIRCUITS
103 Terminals
5 6 1 2
Link
L
N
Mains
Supply
Low
voltage
room stat
L N
Load
Terminals
2) Control of Low Voltage Systems
(e.g. warm air gas valves, low voltage
103 Terminals
5 6 1 2
Link
L
N
Com
N
Mains
Supply
Room Call
Stat
L N Input Output
Pump
Terminals
4) Typical control of heating when used with
combination type boilers.
Part No: 7459v18
5 6
L
N
Mains
Supply
3 5 6
L
N
Mains
Supply
Low voltage
supply
Load
burners).
3 5 6
L
N
Mains
Supply
N L
Boiler Terminals
06/08