Installation 3.3.4 Installation The outdoor unit must be anchored to the floor or to a wall-mounted bracket. a Before installing the system, check that its supporting base is sufficiently resistant and the surface is leveled. Arrange the unit’s installation base according to the dimensions shown below. Outdoor unit (ODU) NIMBUS EXT R32 35 M 50 M 80 M & M-T 120 M & M-T 150 M & M-T UM A 670 670 670 670 670 mm B 383 383 383 383 383 mm C 1016 1016 1016 1016 1016 mm S 756 756 1106 1506 1506 mm 1 A C 1 2 Ø10 mm B D a 1 2 3 Fig. 23 When drilling holes into concrete, we recommend always wearing safety goggles or glasses. If the unit must be secured to a wall-mounted bracket, proceed as follows: – Mark the positions of the holes for the brackets by referring to the measurements shown on the assembly dimensions diagram. – Drill the holes for the rawl plugs. – Clean the concrete dust and residues out of the holes. – Screw the rawl plugs into the holes of the mounting brackets, arrange the brackets in the proper position and hammer the plugs into the wall. – Check that the mounting brackets are properly aligned. – Carefully lift the unit and place its mounting feet on the brackets. – Secure the unit tightly to the brackets using the anchoring bolts (1) (M10 x 4), the washers (2), the vibration dampers (3) and the nuts (4). 1 2 Fig. 22 1 Air inlet 2 Air outlet If the unit is to be installed on the floor or on a (strip) foundation, proceed as follows: – Mark the positions of the four rawl plugs by referring to the measurements shown on the assembly dimensions diagram. – Drill the holes for the rawl plugs. – Clean the concrete dust out of the holes. – Hammer the rawl plugs into the drilled holes. – Anchor the base of the outdoor unit to the holes, using the anchoring bolts (1) (M10 x 4), the washers (2) and the vibration dampers (3). 3 4 Fig. 24 – If the external unit is still aligned in the main wind direction, a wind protection shield must be provided. – If the unit is frequently exposed to heavy snowfall: install a canopy above the unit to protect it from rain or snow. Be careful not to obstruct the flow of air around the unit. 20 / EN

Installation 3.3.5 Arranging the connections – To allow the passage of cables, use a screwdriver to remove the pre-cut pieces (1) from the unit’s frame. – To detach the pre-cut pieces effectively, keep the unit’s front panel fitted on. – Before passing the cables, position the cable grommets (2) contained in the documentation envelope. 3.3.6 Installing the accessory kit Anti-freeze kit (A) 1 2 A G ½” Fig. 27 Fig. 25 – Loosen the screws (3) and remove the front panel (4) by pulling it downwards and forward. Condensate collection tray – Loosen screw (1) and remove the panel (2). 1 4 2 3 Fig. 28 – Loosen screws (3) and (4). B 3 5 A 4 Fig. 26 3 Fig. 29 21 / EN

Installation 3.3.4 Installation The outdoor unit must be anchored to the floor or to a wall-mounted bracket. a Before installing the system, check that its supporting base is sufficiently resistant and the surface is leveled. Arrange the unit’s installation base according to the dimensions shown below. Outdoor unit (ODU) NIMBUS EXT R32 35 M 50 M 80 M & M-T 120 M & M-T 150 M & M-T UM A 670 670 670 670 670 mm B 383 383 383 383 383 mm C 1016 1016 1016 1016 1016 mm S 756 756 1106 1506 1506 mm 1 A C 1 2 Ø10 mm B D a 1 2 3 Fig. 23 When drilling holes into concrete, we recommend always wearing safety goggles or glasses. If the unit must be secured to a wall-mounted bracket, proceed as follows: – Mark the positions of the holes for the brackets by referring to the measurements shown on the assembly dimensions diagram. – Drill the holes for the rawl plugs. – Clean the concrete dust and residues out of the holes. – Screw the rawl plugs into the holes of the mounting brackets, arrange the brackets in the proper position and hammer the plugs into the wall. – Check that the mounting brackets are properly aligned. – Carefully lift the unit and place its mounting feet on the brackets. – Secure the unit tightly to the brackets using the anchoring bolts (1) (M10 x 4), the washers (2), the vibration dampers (3) and the nuts (4). 1 2 Fig. 22 1 Air inlet 2 Air outlet If the unit is to be installed on the floor or on a (strip) foundation, proceed as follows: – Mark the positions of the four rawl plugs by referring to the measurements shown on the assembly dimensions diagram. – Drill the holes for the rawl plugs. – Clean the concrete dust out of the holes. – Hammer the rawl plugs into the drilled holes. – Anchor the base of the outdoor unit to the holes, using the anchoring bolts (1) (M10 x 4), the washers (2) and the vibration dampers (3). 3 4 Fig. 24 – If the external unit is still aligned in the main wind direction, a wind protection shield must be provided. – If the unit is frequently exposed to heavy snowfall: install a canopy above the unit to protect it from rain or snow. Be careful not to obstruct the flow of air around the unit. 20 / EN

Installation 3.3.5 Arranging the connections – To allow the passage of cables, use a screwdriver to remove the pre-cut pieces (1) from the unit’s frame. – To detach the pre-cut pieces effectively, keep the unit’s front panel fitted on. – Before passing the cables, position the cable grommets (2) contained in the documentation envelope. 3.3.6 Installing the accessory kit Anti-freeze kit (A) 1 2 A G ½” Fig. 27 Fig. 25 – Loosen the screws (3) and remove the front panel (4) by pulling it downwards and forward. Condensate collection tray – Loosen screw (1) and remove the panel (2). 1 4 2 3 Fig. 28 – Loosen screws (3) and (4). B 3 5 A 4 Fig. 26 3 Fig. 29 21 / EN