Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 32

Installation sequence
Installing the outdoor unit
Fig. 19
After positioning of the outdoor unit, check whether the
transport bracket is completely secured with an Allen
key (size 5).
Securing screw , must be turned as far as it will go
A
to the left.
Positioning the indoor unit
Transport
!
Please note
Impacts, compression and tensile loads can
cause damage to the outside panels of the
appliance.
Never apply loads/weight to the top, front or
side panels of the appliance.
Requirements for the installation room
!
Please note
An unfavourable indoor environment can lead to
malfunctions and appliance damage.
■ The installation room must be dry and free
from the risk of frost.
■ Ensure ambient temperatures between
0 and 35 °C.
Max. 70 % relative humidity (corresponding to
■
an absolute humidity of approx. 25 g water
vapour/kg of dry air at 35 °C)
Danger
Dust, gases and vapours can be damaging to
health and trigger explosions.
Prevent dust, gases and vapours in the installa-
tion room.
32
(cont.)
A
WiFi operational reliability and system require-
ments
WiFi router system requirement
■ WiFi router with activated WiFi:
The WiFi router must be protected by a sufficiently
secure WPA2 password.
The WiFi router must always have the latest firm-
ware update.
Do not use unencrypted connections between the
heat generator and the WiFi router.
■ Internet connection with high availability:
Flat rate (flat rate tariff without restriction on time or
data volume)