Enable Electric Heaters For Dhw Heating - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group DHW

6015 Enable electric heaters for DHW heating

If the set DHW temperature cannot be achieved with
the heat pump, the following booster heaters can be
activated:
■ Instantaneous heating water heater ("Enable
instantaneous heating water heater 7900")
and/or
Immersion heater ("Enable booster heaters for
■
DHW heating 6014")
Note
Observe setting for "Hysteresis DHW temperature
booster heater 6008".
6016 Priority DHW heating with combi cylinder
Only when using heating water buffer cylinders with
integral DHW heating.
To reduce the heat-up time, heating up of the heating
circuits can be interrupted during DHW heating. For
this, the heating circuit pumps of all heating circuits are
switched off.
6017 Start attempts for DHW after high pressure shutdown
High set DHW temperatures can lead to the compres-
sor shutting down due to control high pressure. If there
is an existing heat demand, the heat pump control unit
tries to restart DHW heating. This parameter deter-
mines the number of start attempts.
If all attempts result in a high pressure fault, DHW
heating is terminated and central heating is switched
on.
601E Shutdown hysteresis inst. heating water heater
This hysteresis serves to specify the max. flow temper-
ature of the instantaneous heating water heater for
DHW heating, relative to the max. flow temperature for
heat pump operation. The instantaneous heating water
heater switches off earlier than the heat pump during
DHW heating, as the hysteresis is deducted from the
max. flow temperature for heat pump operation.
220
Value Meaning
"0" Instantaneous heating water heater and im-
mersion heater are not enabled for DHW re-
heating. If these booster heaters are installed,
they are only switched on for DHW cylinder
frost protection.
"1" Instantaneous heating water heater and/or
immersion heater is enabled for DHW reheat-
ing.
!
Value Meaning
"0" Simultaneous central heating and DHW heat-
ing is possible.
"1" No central heating during DHW heating; all
heating circuit pumps are switched off during
this time.
Note
If the outside temperature falls below the frost
protection limit, only the heating circuit mixers
are closed. The heating circuit pumps remain
operational.
!
Enable DHW heating after high pressure fault:
■ After expiry of a blocking time.
or
Within the blocking time, if the operating status for
■
DHW heating changes from a lower to a higher tem-
perature level, e.g. from "Top" to "Standard".
"Vitotronic 200" operating instructions
!
Note
At setting "0", the heat pump control unit switches the
instantaneous heating water heater off at a flow tem-
perature of 65 °C. The heat pump already switches off
at 60 °C.
≙
Setting 1 0.1 K