Installation conditions and preparations

For installation and installation conditions for the WS 75 RSAP and WS 75 RSUP shell mounting kits → WS 75 shell installation instructions.

The ventilation unit is only suitable for indoor use (degree of protection IP 00). Protect ventilation unit from moisture and wetness.
Surface mounting of WS 75 RSAP: Only mount ventilation unit on a level wall with sufficient load-bearing capacity.
Flush mounting of WS 75 RSUP: Only insert the ventilation unit in a wall with sufficient load-bearing capacity. Take into account the dimensions of the fully finished wall → Sticker on flush-mounted shell kit.
The customer should provide appropriate mounting material for installation.
Core hole diameter for outside/outgoing air incl. insulation 160 mm, hole with 1 to 2 % downward slope to the outside.
Damage to the unit and damage to the masonry due to condensation running down the wall if the unit is installed incorrectly.
Install the wall sleeve in such a way that the condensation water can run off in the drainage channel of the wall sleeve towards the exterior wall (1 to 2 % downward slope). The wall sleeve must protrude 10 - 20 mm beyond the exterior wall after the plaster etc. has been applied.
For rear wall supply air/exhaust air connection, use MF-WL 100 bracket and MF-F75 flexible ducts from Maico.
Electrical cables: Power cable, NYM 3x1.5 mm². If the operating unit is placed externally, LIYCY 4 x 0.34 mm² type control cable.
If the connecting cables are too short, the electronics slide-in module cannot be fully pulled out and fitted in the housing. Ensure connection cables of a sufficient length inside the ventilation unit.
Select installation position so as to avoid contamination and draughts.
Select installation locations and models for the ventilation units to keep noise emissions down. If possible, avoid sound bridges with the structure by observing sufficient distance from other façade elements.
When heat recovery units with enthalpy heat exchangers are first installed, a slight odour may be released over the first few weeks of operation. This volatilises within a few weeks of operation.

Only use accessories and spare parts approved by the manufacturer.