Switching On The Gas Condensing Module And The Fuel Cell Module; Venting The Heating System - Viessmann Vitovalor PT2 E11T Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Switching on the gas condensing module and the fuel cell module

A B C
Fig. 53
Gas condensing module ON/OFF switch
A
Export meter Z2
B
1. Close the gas shut-off valve.

Venting the heating system

1. Activate the venting program (See commissioning
assistant or following chapter).
Note
For function and sequence of the venting program,
see page 187.
Activating the venting function
Tap the following buttons:
1. " "
2. "Service"
58
D
Fuel cell module ON/OFF switch
C
ON/OFF switch on the fuel cell module
D
2. If the gas condensing module was not already
switched on for filling, switch on the gas condens-
ing module ON/OFF switch and both fuel cell
ON/OFF switches.
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 condens-
ing module.
2. Check the system pressure.
3. Open the gas shut-off valve.
3. Enter password "viservice".
4. "Service function"
5. "Venting"