Viessmann BW 01.A06, Installation And Service Instructions Manual

Page: 108 / 168

108
2. Check the pre-charge pressure of the
expansion vessel.
3. Fill (flush) and vent secondary cir-
cuit.
Note
Type BWC has integral non-return
valves, which means that there is flow
in only one direction in the secondary
circuit.
4.
!
Please note
To prevent equipment dam-
age, check the flow and return
connections of the secondary
heat pump circuit for
leaks .
In case of leaks, immediately
shut off the equipment, drain
the water and check the seat-
ing of the seal rings. Replace
any seal rings that may have
become dislodged.
5. Check the system pressure and top
up with water if required.
Minimum system pressure: 0.8 bar
Permiss. operating pressure: 2.5 bar
Checking expansion vessels and the primary circuit/heating cir-
cuit pressure
Observe design information.
Vitocal technical guide
Commissioning the system
Commissioning (configuration, setting
parameters and function checks) can be
carried out with or without the commis-
sioning assistant (see the following
chapter and the separate service instruc-
tions for the Vitotronic 200 heat pump
control unit). Note
Type and extent of parameters depends
on the heat pump type, on the selected
system scheme and the accessories
employed.
Commissioning with the commissioning assistant
The commissioning assistant guides you
automatically through all the menus
where settings have to be made. For
this, "Coding level 1" is automatically
active.
!
Please note
Incorrect operation at "Coding
level 1" may result in damage to
the appliance and the heating
system.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5600 161 GB