N
N
L
L
convector(s)
power supply
of the contact
switch coil
Zone 1
1 2 3
R
C
T
N
L
circulator
1 2 3
R
C
T
Boiler without thermostat input
If the boiler does not have a thermostat input,
you can directly control the boiler's circulator
Control the electric convectors
To control electrical convectors,
you MUST use a power contact switch
that is suitable for the total power
to be controlled.
The diagrams provided are simplified for greater clarity.
The protective devices and other accessories required by the standards are not
illustrated. Standard UTE C15-100 and good practice must be complied
with.Connected or nearby equipment must not generate excessive interference
(directive 89/336/EEC).
wire to be removed:
- anticipator,
- earthed (green/yellow wire).
old thermostat’s
wire
1 2 3
R
C
T
- 24 -
- 25 -
Connection
Replace a 2-wire thermostat or connect
a boiler with thermostat input
Turn off the current.
Connect thermostat terminals 2 and
3 to both terminals of the boiler
thermostat input.
If necessary, remove the shunt
(electric wire) connecting the two
thermostat input terminals. If the
boiler has a clock input, do not
mistake it for the thermostat input.
Replace a 3-wire thermostat
Turn off the current and disconnect
the oldthermostat. If this thermostat has
ananticipator, remove the correspondingwire.
If the present thermostat is earthed (green/yellow
wire), remove the corresponding wire.
Connect the 2 remaining
wiresto thermostat terminals
2 and 3.
1 2 3
R
C
T
remove
the shunt
wires to be
connected to
the thermostat
do not confuse
with the clock input
(on some boiler models)
Example of a boiler
terminal box
Summary of Contents for CTP10
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