Fitting The Shaft And Dial For The On/Off Switch And Installing The Programming Unit; Closing The Heat Pump - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Fitting the shaft and dial for the ON/OFF switch and installing the programming unit

Note
The shaft and control dial for the ON/OFF switch as
well as the programming unit are delivered inside the
wiring chamber of the heat pump. Only fit the program-
ming unit after all electrical connections have been
made.
1.
2.
0 / Off
Fig. 31
3. Position the front panel tightly against the front of
the heat pump.
Route the RS12 data cable through the opening
and connect it to the programming unit.
Click the programming unit into place in the open-
ing and check for firm seating.
Securely lean the front panel against the heat
pump.

Closing the heat pump

Danger
The absence of component earthing can result
in serious injury from electrical current and in
component damage in the event of an electrical
fault.
Restore all earth connections.
!
Please note
Leaking hydraulic connections lead to appliance
damage.
Check the internal hydraulic connections for
■
tightness.
3.
4.
!
Please note
If a casing door is not securely closed this can
lead to damage from condensation, vibrations
and excessive noise.
Seal the appliance so it is soundproof and diffu-
sion-proof.
Prior to closing the heat pump, check the following:
■ Are all cables inside the wiring chamber sufficiently
secured (strain relief, cable ties)?
Has the programming unit been fitted and connec-
■
ted?
■ Have all earth conductors been connected?
Installation sequence
49