External Heat Source For Dhw - Viessmann Vitocal 300-G Installation And Service Instructions Manual

Dual-mode temperature
Access
"Device settings"
"Programming"
"Ext. heat source"

External heat source for DHW

Parameter
7B0D
Details as to whether an external heat
source is to be used for DHW heating.
Access
"Device settings"
"Programming"
"Ext. heat source"
Control settings, external heat source
(cont.)
y to "Dual-mode temp"
1 or !
Standard setting
Setting range
In case of higher heating demand
made of the DHW cylinder that cannot
be covered by the heat pump alone,
the corresponding pump (circulation
pump for cylinder reheating) and the
external heat source will be activated.
If the acknowledgement Yes is
entered, no electric immersion heater
EHE installed in the DHW cylinder
can be controlled.
y to "Ext. HS for DHW"
"YES" or "NO"
Standard setting
Setting range
10 °C
-50 to 50 °C
No
Yes/No
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