Hysteresis/Hysteresis Booster Heater - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

Max. temperature
Danger
DHW with temperatures in
excess of 60 ºC can cause
scalding.
To limit the temperature to
60 °C, install a mixing device,
e.g. an automatic thermostatic
mixing valve (DHW cylinder
accessory).

Hysteresis/Hysteresis booster heater

Parameter
6007 Hysteresis
Relative to heating by heat pump.
Parameter
6008 Hysteresis booster heater
Relative to heating with an instanta-
neous water heater, an external heat
source or an electric immersion hea-
ter EHE (DHW cylinder accessories).
These settings determine the devia-
tion from the set DHW cylinder tem-
perature ("DHW cylinder temp.") at
which the cylinder heating is switched
on and off by the heat pump ("Hys-
teresis").
If an additional booster heater is
installed, the "Hyst. booster heater"
parameter is also relevant.
(cont.)
Access
"Device settings"
"Programming"
"DHW"
y to"Max. temp."
T or U
Standard setting
Setting range
A Set DHW temperature
B Heat pump switching hysteresis
C Switching hysteresis, instanta-
D Actual DHW temperature at the
E Heat pump control state
F Control state, instantaneous heat-
G OFF
H ON
DHW control settings
60 °C
20 to 80 °C
("Hysteresis")
neous heating water heater
("Hyst. booster heater")
upper cylinder temperature sen-
sor
ing water heater
147