Commissioning The System - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Commissioning the system

ON/OFF switch, gas condensing module and fuel cell module
A B C
Fig. 62
ON/OFF switch, gas condensing module
A
Export meter Z2
B
Note
If the fuel cell module is to be commissioned at a later
time, also switch on the fuel cell module ON/OFF
switch when operating the gas condensing module.
Commissioning assistant
1. Check that the gas shut-off valve is closed.
2. ■ If the device has not yet been switched on:
Switch on gas condensing module ON/OFF
switch and fuel cell module ON/OFF
A
switch .
C
The commissioning assistant starts automati-
cally.
■ If the device has already been switched on: See
chapter "Calling up the commissioning assistant
at a later point".
Commissioning, inspection, maintenance
D
Fuel cell module ON/OFF switch
C
ON/OFF switch on the fuel cell module
D
3. Start the heat generator and follow the commis-
sioning assistant. See the following overview.
Note
Fault messages such as "System pressure too
low" are associated with initial commissioning.
Ignore these fault messages at first.
Note
During commissioning, the appliance can enter a
fault state because of airlocks in the gas line.
Reset the burner after approx. 5 s (see operating
instructions).
4. At the end of the commissioning assistant with
actuator and sensor test, check correct connection
and function of the actuators.
65