Viessmann VITOCAL 200-G, Installation And Service Instructions Manual

Page: 14 / 208

Instantaneous heating water heater
An instantaneous heating water hea-
ter can be installed in the unit (acces-
sory, see separate installation
instructions).
Subject to the available grid, the sys-
tem may be supplied with 230 V or
400 V. Protect the instantaneous heating
water heater via a separate connec-
tion.
The heat pump control unit regulates
this function.
Power-OFF (interruption by the power supply utility)
It is possible to have the compressor
and the instantaneous heating water
heater or just one of these shut off by
the power supply utility.
This can be in the form of a "hard"
shutdown (contactor shutdown) or a
"soft" shutdown by the heat pump
control software. For both shutdown
methods, the "power-OFF" control
unit input signal must be connected
(see page 81). The "hard" shutdown requires an
additional control on site (see
page 81). This must not shut down the
control unit power supply.
For the "soft" shutdown, the compo-
nent that is being switched off can be
selected using the "power-OFF" para-
meter for the heat pump (see
page 137) and/or for the instanta-
neous heating water heater ("Electric
heating", see page 142).
Function description of systems
(cont.)
14
Preparing for installation
55
92
968
GB