26
A
Electrical connection of pump control thermostat
B
Thermostat to control the pump (e.g. Afriso), with approx. 3.0 m connecting lead 2 x 0.75 mm²
C
Return flow temperature riser (circulating pump)
D
Terminal 1 not necessary!
E
Phase L (brown line)
F
Switched phase (L‘) blue lead
The functioning of the thermostatic switch can be checked before using it
for the first time with hot water (e.g., from a kettle) and a thermometer. Note
that the cover panel has to be removed in order to do this.
2.8.6 INTEGRATION IN A HEATING SYSTEM
Please note: The ambiente a4H
2
O/a6 H
2
O must only be installed in an
overall system after detailed planning of the overall heating system in
accordance with the relevant rules of technology and the safety stand-
ards. Proper configuration of the pumps, fittings, pipeline, buffer tank
and the safety components, is the responsibility of the planning firm
and/or of the company in charge of installation. For heating lines, we
recommend a minimum nominal copper pipe diameter of 22 x 1.0 mm,
or 3/4" for steel pipe. For cold water pipes a nominal pipe size (cop-
per pipe) of 15x1.0 and a flow pressure of 2.0 bar are sufficient for
safe operation. Possible variant for integration into a heating system.
A
Temperature sensor for thermal discharge safety device ½¨ internal thread
B
Temperature sensor for thermostatic switch ½¨ Internal thread
C
Return ¾¨ internal thread
D
Flow ¾¨ internal thread
Fig. 17b
The blue wire, the switched
phase (L') is wired as the phase
to the circulating pump or return
riser
The green/yellow wire is wired to
the earth wire (earth) (PE) of the
mains supply line.
The brown wire must be wired to
the phase (L) of the mains supply
line.
Fig. 17a
Chapter 2
