Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 60

Installation sequence
Power supply
G Double-tariff meter (for special tariff
for heat pump)
Not permissible in conjunction with
PV systems for own energy con-
sumption.
H Bi-directional meter (for PV systems
for own energy consumption):
Energy taken from power supply
utility and energy fed into power
supply utility
Closing the heat pump
!
Please note
Seal the appliance so it is sound-
proof and diffusion-proof.
On pipe and hose outlets, ensure
the thermal insulation is seated
correctly.
Danger
The absence of component
earthing can lead to serious injury
from electric current if an electri-
cal fault occurs.
Attach earth conductor to front
panel and side panel.
Fitting side cover for external unit
In reverse order to "Opening the external
unit wiring chamber" (see page 49).
60
(cont.)
K Meter with reverse block:
For energy generated by PV sys-
tem
L Isolator for the domestic power sup-
ply connection (distribution panel)
M Distribution panel
N Domestic distribution box
1. Close casing door, in reverse order to
page 32.
Note
Because of the sound insulation mat,
the casing door stands out slightly
when closed.
2. Follow steps on page 16 in reverse
order.