38
Clamps
Function
Description
222.3
222.4
Control of external heat source
and after 1st securing temper-
ature limiter (in the scope of
the investor's responsibilities,
max. 70°C) for switching off and
switching the following compo-
nents:
Space heating:
■
Secondary pump of heat
pump
■
External heat source
DHW heating:
■
three-way diverter valve "DHW
heating"
Voltage free contact
Note
■
The switching contact is potential
free normally open contact closed
when needed hot.
■
Do not supply low voltage by con
-
tact. For this purpose the investor
has to install the relay.
■
Boiler water temperature sensor
or in an external heat source (plug
F20) must register average out
-
door temperature heat generator.
Connection parameters (contact
load):
■
Voltage: 230 V ~
■
Max. contact current: 4 (2) A
connecting a safety temperature
limiter:
Space heating
■
In series to the secondary pump
(connection 211.2)
■
In series with external control heat
generator
Reheating of domestic hot water
■
In series with three-way valve
switch "Heating/Domestic hot
water heating" (connection 211.4)
