Viessmann Vitocal 350-A AWHI 351.A14, Installation And Service Instructions Manual

Page: 34 / 140

34
4. Connect the lead to the heat pump control unit to
the controller and sensor PCB inside the heat
pump control unit at connection F8. If necessary,
extend the lead to the heat pump control unit on
site.
Control panel electrical connections
Opening the control panel
1.
2.
Fig. 27
A
Control panel with electrical components
B
Internal earth conductor
1. Undo 2 screws at the bottom of the control panel
cover.
2. Pull the control panel cover off downwards and lift
out upwards.
Note
Undo internal earth conductor
B
prior to removing
the cover completely.
Note
In the delivered condition, the coding card is affixed
inside the control panel. Remove the coding card and
insert into the heat pump control unit; see page 45.
Installation sequence
Hydraulic connections
(cont.)
5692878
Installation