Viessmann Vitocal 222-S Installation And Service Instructions For Contractors page 23

Installing the indoor unit
Total weight with filled DHW cylinder
Vitocal 222-S
230 V appliances
400 V appliances
Each pressure point (each with an area of 3217 mm
is subject to a load of up to 96 kg.
Connecting the refrigerant lines
The outdoor unit is pre-charged with refrigerant
R410A.
Oil lift bends
Oil lift bends guarantee that the refrigerant oil is relia-
bly conveyed back to the compressor.
!
Please note
Errors in the design and installation of oil lift
bends can result in appliance damage.
In the following cases, fit oil lift bends in the ver-
tical hot gas line:
■ In heating mode, if the indoor unit is installed
higher than the outdoor unit.
In cooling mode, if the indoor unit is installed
■
lower than the outdoor unit.
Distance between the oil lift bends approx.
5 m.
(cont.)
Type
AWBT-M
■
AWBT-M-E
■
AWBT-M-E-AC
■
AWBT
■
AWBT-E
■
AWBT-E-AC
■
2
)
221.C04
221.C06
221.C08
221.C10
221.C13
221.C16
221.C10
221.C13
221.C16
Indoor unit above outdoor unit
A
C
B
E
Fig. 19 Example for heating mode: With oil lift bends
Indoor unit
A
Hot gas line (hot gas)
B
Liquid line (liquid)
C
Outdoor unit
D
Oil lift bends
E
Installation sequence
Total weight in kg
382
382
382
383
383
383
383
383
383
D
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