B0D Ext. Hs For Dhw; B0E Dual-Mode Operation - Viessmann VITOCAL WPR 300 Service Instructions Manual

7B0D Ext. HS for DHW !

Using the external heat source for DHW heating.
"Yes" External heat source is en-
abled for DHW heating.
"No" External heat source is
blocked for DHW heating.
Menu
& "Device settings"
& "Programming"
7B0E Dual-mode operation §
Parallel operation of heat pump and external heat source.
"Yes" Parallel operation of heat
pump and external heat
source possible.
"No" Heat pump shuts down if
the external heat source
operates below the "Dual-
mode temperature"
(7B02).
External heat source control settings
& "Ext. heat source"
& "Ext. HS for DHW"
Delivered condition
Setting
Note
For the heat pump to be
able to be shut down, DHW
heating must also be cov-
ered by the external heat
source. Requirement: Para-
meter "Ext. HS for DHW"
(7B0D) is set to "Yes".
Menu
& "Device settings"
&
"Programming"
& "Ext. heat source"
& "Dual-mode operation"
Delivered condition
Setting
No
Yes/No
Yes
Yes/No
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