System Filter; Troubleshooting - Immergas UI PRE PLUMBED 200 Instructions And Recommendations

3.7

SYSTEM FILTER

The indoor unit has a filter on the system return fitting to keep the system in good operating conditions.
The filter can be cleaned periodically and when necessary.
3.8

TROUBLESHOOTING

Maintenance operations must be carried out by an authorised company (e.g. Authorised After-Sales Technical Assistance Cen-
tre).
Noise due to air in the system.
Check opening of the hood of the special air vent valve (Fig. 16).
Make sure the system pressure and expansion tank factory-set pressure values are within the set limits.
The factory-set pressure values of the expansion vessel must be 1.0 bar, the value of system pressure must be between 1 and 1.2 bar.
51