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D.5. DHW RECIRCULATION PUMP
Description
If you do not intend to control a heating element for space heating
by the controller, the controller can be used for switching hot water
recirculation following a time program.
It is recommended to use a pump station for DHW recirculation
with integrated anti-scald valve CSE TVMIX ZV G 3/4M (code
17893 – to be ordered separately).
Intended for variants
1 (options A, B)
Installation
The cold water supply for the anti-scald valve must also be
connected to the hot water outlet and recirculation pipes.
Settings in controller
For variant 1, options A, B:
• In parameter 7.9.9.1. select Off
• In parameter 7.9.15.1. select On
Set the recirculation time program in menu 5.23.6.
Connecting terminal
Terminal R3
El. wiring
The pump is powered by the controller and switched ON/OFF.
Wiring diagram
POWER SUPPLY
EXTRA LOW VOLTAGE
located on the top cover of the
printed circuit board
power supply connector
power supply
connection (A)
connection B serves
for PWM signal
transmission and
is not used in this
application