Filling And Venting On The Secondary Side; Checking Expansion Vessels And The Primary Circuit/Heating Circuit Pressure; Commissioning The System - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Filling and venting on the secondary side

!
Please note
Commissioning when the secondary circuit is
empty causes appliance damage.
Charge and vent the secondary circuit before
connecting the power supply.
Note
Before filling the system, observe VDI 2035 part 1.
1. Check the Victaulic connections in the heat pump
for tightness. The Victaulic couplings must be form-
locked and fitted together seamlessly.
2. Open any on-site non-return valves if installed.
3. Check the pre-charge pressure of the expansion
vessel.
Checking expansion vessels and the primary circuit/heating circuit pres-
sure
Observe engineering information.
Heat pump technical guide

Commissioning the system

Commissioning (configuration, parameter settings and
function checks) can be carried out with or without the
commissioning assistant (see following chapter and
"Vitotronic 200" service instructions).
Commissioning with commissioning assistant
The commissioning assistant automatically guides you
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 heat-
ing system.
Observe the information in the "Vitotronic 200"
service instructions, otherwise the appliance
warranty will be void.
Commissioning, inspection, maintenance
4. Fill (flush) and vent the secondary circuit.
!
Please note
Leaking hydraulic connections lead to appli-
ance damage.
Check tightness of the internal and on-site
■
hydraulic connections.
In the event of leaks, switch off the appli-
■
ance immediately. Drain the secondary cir-
cuit and check the seating of the seals.
Always replace damaged or displaced
seal rings.
5. Check the system pressure and top up with water if
required.
Minimum system pressure: 0.8 bar (80 kPa)
Permiss. operating pressure: 6 bar (0.6 MPa)
Note
The type and extent of the parameters depend on the
heat pump type, on the selected system scheme and
the accessories employed.
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