Viessmann VITOCAL 200-G, Installation And Service Instructions Manual

Page: 102 / 208

10. Note
Pay attention to information con-
cerning control operation (from
page 129), select language if
necessary (see page 103, default
setting "
German ").
Start the commissioning program
for the heating circuit:
Menu item
& " Device settings "
& " Contractor level "
Enter the code for " Heating
contractors " (see page 129).
& " Commissioning "
& " Heating circuit " (for system
without external heating circuit
pumps)
or
& " Heating circuit 1 pump " and/
or " Heating circuit 2 pump "
(subject to system version)
11.
!
Please note
In order to prevent equip-
ment damage, check the
flow and return connec-
tions of the secondary
heat pump circuit for
leaks (see page 71).
In case of leaks, immedi-
ately shut off the equip-
ment, drain the water and
check the seating of the
seal rings. Replace all seal
rings that may have
slipped.
Let the commissioning program
run until the equipment is fully
vented. For this, observe the sys-
tem pressure; should that drop
below 0.8 bar, top up with water.
12. Close the air vent valve.
13. Terminate the commissioning pro-
gram with key "
BACK ".
14. Only for commissioning:
Fit the front part of the heat pump
thermal insulation (see page 63).
Checking the diaphragm expansion vessel of the heating cir-
cuit and its pressure
Carry out this test on a cold system.
Note
Only use anti-corrosion agents that
have been approved for heat pumps
with DHW heating via single-walled
heat exchangers (DHW cylinders).
1. Drain the heating water side of the
boiler system and reduce the pres-
sure until the pressure gauge indi-
cates "0".
Further details regarding the individual steps
(cont.)
102
Commissioning, inspection, maintenance
55
92
968
GB