13.2.1 General maintenance procedure for the outdoor unit ................................................................................................. 336

13.2.2 General maintenance procedure for the indoor unit ................................................................................................... 337

14 COMMISSIONING ...................................................................................................................344

14.1 Before operation ................................................................................................................................................. 344

14.2 Preliminary check ............................................................................................................................................... 344

14.2.1 Checking the unit ........................................................................................................................................................ 344

14.2.2 Electrical checking ...................................................................................................................................................... 344

14.2.3 H ydraulic circuit checking (space heating and DHW) ................................................................................................ 344

14.3 Commissioning procedure.................................................................................................................................. 345

14.4 Test run / air purge ............................................................................................................................................. 346

XIV

PMML0575 rev.2 - 03/2022

Table of Contents