INSTALLATION
Wall Mounted 0121…0661
10 (22)
Monobloc Wall Mounted Unit - WMA/WMF 0121-0181-0251-0281-0331-0551-0661 - Rev. 2.0. - Date: 18-07-2000 EN
To facilitate maintenance, leave at least 1,5m free space in front of the unit as shown in the diagram (point E). This
minimum distance allows the expulsion of external air for condensation and the aspiration of air for free-cooling.
N.B.:Side access to the unit is only necessary on the right side of models 0121…0331 for the replacing of the
damper servomotor; it is not necessary for other maintenance operations or access to electrical panels and wires.
A distance of ‘D’ and ‘S’ is strongly advised to allow maximium ventilation of condensate across the lateral cahrge
grilles.
AIR DISTRIBUTION
Air discharge into and intake from the environment can be either directly - with grilles - or via ducting (Check in
section "TECHNICAL DATA" the available pressure of air flow.
If the air is distributed via grilles, these must correspond accurately with the holes made in the wall of the air
conditioned environment, making sure that:
• the air discharge grille (the upper grille) has a double row of directable slats to control the direction of the airflow
on both the vertical and horizontal plane;
• the air intake grille has a wide passage in order to minimise the loss of load; the intake grille slats do not need to
be directable.
If ducting is used for the distribution and/or intake of air it must be of the correct dimensions; ‘Technical Data’ tables
give details of le portate e pressure drop characteristic of each unit.
WARNING: it is essential the airflow is completely free from obstruction, insufficient outflow reduces airflow and the
cooling capacity of the conditioning unit.
AIR FLOW HOLES
To allow air flow into the climatised room it is necessary to make two holes in the wall in the position of the unit of
dimensions indicated in Fig.8; air holes must be completely free of any obstructions.
Figura 9. Shows the rear panel of the unit with pricipal dimensions. Models 0551 - 0661 aspiration and air flow holes
are protected with fixed metal grilles.
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