Setting The Dhw Temperatures; Enabling Electric Heater For Dhw Heating - Viessmann VITOCAL 300-G Operating Instructions Manual

Required settings (DHW heating)
If you want DHW heating, check the fol-
lowing points:
■ Have you set the required DHW tem-
perature?
For settings, see page 29.
■ Have you set the correct operating
program?
For settings, see page 30.

Setting the DHW temperatures

Standard DHW temperature
Standard menu
1. "DHW"
2. "Set DHW temp"
3. Set the required value.
Setting a second DHW temperature
You can specify a second temperature
(Set temperature 2) for DHW heating.
■ By selecting the operating status
"Temp. 2" in the DHW time program,
you can heat the DHW to that set value
(see page 31).
■ The "Set temperature 2" is the set
value for heating the DHW once (see
page 33) and for the manual opera-
tion (see page 45).

Enabling electric heater for DHW heating

If the heat pump cannot achieve the
selected DHW temperature, an instanta-
neous heating water heater (on site) can
be started automatically to boost DHW
heating.
■ Have you set the required time pro-
gram?
For settings, see page 31.
Extended menu
1.
2. "DHW"
3. "Set temperature 2"
4. Set the required value.
The constant use of an instantaneous
heating water heater results in higher
power consumption, which therefore
requires it to be enabled.
DHW heating
29