Dhw Reheating With Booster Heaters - Viessmann VITOTRONIC 200 Service Instructions Manual

Function description
DHW heating
(cont.)

DHW reheating with booster heaters

Possible booster heaters:
Instantaneous heating water heater (part of standard
■
delivery, as accessory or on site, depending on heat
pump type)
■ External heat generator
or
Immersion heater (as an accessory or on site,
■
depending on heat pump type), installed in the DHW
cylinder
Note
An immersion heater and an external heat generator
cannot be enabled simultaneously for DHW
reheating.
Enabling for DHW reheating
Parameter
"Enable booster heaters for DHW heating
6014"
"Enable electric heaters for DHW heating
6015"
"Enable instantaneous heating water
heater 7900"
"Enable external heat source 7B00"
"Enable external heat source for DHW
heating 7B0D"
!
Please note
After the value "1" has been set for "Enable
instantaneous heating water heater 7900",
the prompt "Secondary circuit filled?" auto-
matically appears. If this prompt is responded to
with "No", the instantaneous heating water
heater will not be enabled. Set "Enable instan-
taneous heating water heater 7900" to "2".
Fill the secondary circuit. Confirm prompt "Sec-
ondary circuit filled?" with "Yes".
42
Instantaneous Immersion heater
heating water heat-
er
—
"1"
"1"
—
—
Switching DHW reheating on and off
The enabled booster heater is switched on and off for
DHW reheating subject to parameter "Enable elec.
heating/ext. HS for reheating only 6040", under the
following conditions:
If several booster heaters have been enabled for DHW
reheating, the integral load management of the heat
pump control unit decides which of the booster heaters
is activated. The external heat generator has priority
over the instantaneous heating water heater.
External heat gener-
ator
"1"
—
"1"
—
— —
"1"
—
"1"
—