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

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33
Type AWHO 351.A
4.
D
A
B
C
3.
2.
Fig. 25
1. Cut suitable openings on site in sealing mat
B
for
hydraulic lines
A
,
C
and condensate drain
D
.
4. Route condensate drain
D
from the heat pump
such that it is not directly adjacent to heat-carrying,
vibrating or sharp-edged parts.
Connect the condensate hose to the on-site drain
connection via a trap (backup level at least
60 mm).
Technical guide
!
Please note
The condensate hose can freeze up.
Thermally insulate the condensate hose or if
necessary install a ribbon heater on site.
5. Pass hydraulic lines
A
and
C
out of the heat
pump and connect to the lines in the foundation
duct.
!
Please note
Water-carrying pipes can freeze up.
Thermally insulate pipes inside and outside
the heat pump against frost.
6.
Remove protective foil from sealing mat B . Affix
sealing mat B to the opening in the base plate.
Fitting the flow temperature sensor, secondary cir-
cuit
The flow temperature sensor for the secondary circuit
is installed in the heating water flow
inside the build-
ing .
Note
If an instantaneous heating water heater is installed, fit
the flow temperature sensor for the secondary circuit in
the heating water flow
downstream of the instantane-
ous heating water heater.
2.
3.
D
C
B
1.
A
Fig. 26
A
Pipe section with sensor well
B
Spring clip
C Flow temperature sensor, secondary circuit
D Sensor lead plug and lead to the heat pump con-
trol unit
1. Fit the pipe section with a sensor well.
2. Secure the flow temperature sensor for secondary
circuit with a spring clip in the sensor well.
3. Connect the sensor lead and the lead to the heat
pump control unit.
Installation sequence
Hydraulic connections
(cont.)
5692878
Installation