Installation 3.4.2 Handling Once the packaging has been removed, the indoor unit can be handled manually since it is not very heavy. a a Handling operations may potentially cause personal injuries or damages to the appliance or to the surrounding area. Identify the risky area and check that it is free of people or objects during lifting operations. Observe the maximum weight that can be lifted per person. – List the device only from points (1) indicated in the picture to avoid damaging the panelling. 3.4.3 Hanging the indoor unit – Position the template (1) supplied on the wall. – Drill the holes (2) for fastening the metal bracket (3), supplied with the kit, required for hanging the unit to the wall. 2 1 3 1 1 Fig. 37 Fig. 36 – Fasten the bracket (3) using the screws and plugs (4) with the aid of a spirit level. – Lift the unit and attach it to the bracket. 4 3 Fig. 38 – Remove the protective film. 22 / EN

Hydraulic connections 4. Hydraulic connections 4.1 Indoor unit hydraulic connections Preliminary checks: a – Check that the system has been cleaned; – Check that there are no impurities in the circuit water; – Check that compatible components are used (e.g. do not connect copper and steel to each other); – Check that the connection to the heating system has been made correctly; – check that the water supply distribution network pressure does not exceed 0.5 MPa (5 bar), otherwise install a pressure reducer at the system's intake; – check that a disconnect device with cock is installed between the system and the domestic water supply distribution network (if present); – check that the supplied expansion vessel is large enough to handle the water in the system and, if necessary, install an additional one; Remove the rubber protective caps before making the hydraulic connections. The plugs are used exclusively as a protective device during transport. After the checks: – Mount the quick couplings (present inside the machine) on the water pipes (1), (2), (3) and (5). 5 1 2 3 – Connect the heating/cooling system to the indoor unit at points (1), (2), (3), (4) and (5) shown in the figure. – Connect the system filling pipes. – Connect the safety valve discharge pipe (6). 1 Z1 IN 1 System return 2 Delivery from heat pump 3 Return to heat pump 4 DHW delivery (accessory) 5 System flow 6 Safety valve drain 1 2 3 4 5 A B 4 2 3 OUT Fig. 40 5 Z1 OUT 6 6 Fig. 39 EN / 23

Installation 3.4.2 Handling Once the packaging has been removed, the indoor unit can be handled manually since it is not very heavy. a a Handling operations may potentially cause personal injuries or damages to the appliance or to the surrounding area. Identify the risky area and check that it is free of people or objects during lifting operations. Observe the maximum weight that can be lifted per person. – List the device only from points (1) indicated in the picture to avoid damaging the panelling. 3.4.3 Hanging the indoor unit – Position the template (1) supplied on the wall. – Drill the holes (2) for fastening the metal bracket (3), supplied with the kit, required for hanging the unit to the wall. 2 1 3 1 1 Fig. 37 Fig. 36 – Fasten the bracket (3) using the screws and plugs (4) with the aid of a spirit level. – Lift the unit and attach it to the bracket. 4 3 Fig. 38 – Remove the protective film. 22 / EN

Hydraulic connections 4. Hydraulic connections 4.1 Indoor unit hydraulic connections Preliminary checks: a – Check that the system has been cleaned; – Check that there are no impurities in the circuit water; – Check that compatible components are used (e.g. do not connect copper and steel to each other); – Check that the connection to the heating system has been made correctly; – check that the water supply distribution network pressure does not exceed 0.5 MPa (5 bar), otherwise install a pressure reducer at the system's intake; – check that a disconnect device with cock is installed between the system and the domestic water supply distribution network (if present); – check that the supplied expansion vessel is large enough to handle the water in the system and, if necessary, install an additional one; Remove the rubber protective caps before making the hydraulic connections. The plugs are used exclusively as a protective device during transport. After the checks: – Mount the quick couplings (present inside the machine) on the water pipes (1), (2), (3) and (5). 5 1 2 3 – Connect the heating/cooling system to the indoor unit at points (1), (2), (3), (4) and (5) shown in the figure. – Connect the system filling pipes. – Connect the safety valve discharge pipe (6). 1 Z1 IN 1 System return 2 Delivery from heat pump 3 Return to heat pump 4 DHW delivery (accessory) 5 System flow 6 Safety valve drain 1 2 3 4 5 A B 4 2 3 OUT Fig. 40 5 Z1 OUT 6 6 Fig. 39 EN / 23