Operation - Frico Sierra Original Instructions Manual

General Instructions
Read these instructions carefully prior to
installation and use. Keep this manual for
future reference.
The product may only be used as set out in
the assembly and operating instructions. The
guarantee is only valid should the product be used
in the manner intended and in accordance with
the instructions.
Application
Sierra creates an efficient temperature dividing
air barrier in door openings. The recommended
installation width of Sierra is 5 m with air
curtains mounted on both sides of the opening
and its recommended installation height is
3,5 m. The air curtain is available without heat,
with electrical heating and with water heating.
Protection class: IP20.

Operation

Air is drawn in at the top/rear of the unit and
blown downwards/outwards shielding the
door opening and minimizing heat loss. To
achieve the optimum air curtain effect the unit
must extend the full height/width of the door
opening.
The grille for directing the outlet air is
adjustable and is normally angled outwards to
achieve the best protection against incoming
air.
The efficiency of the air curtain depends on
the air temperature, the pressure differencial
across the doorway and any wind load.
NOTE! Negative pressure in the building
considerably reduces the efficiency of the air
curtain. The ventilation should therefore be
balanced.
Mounting
The air curtain range includes units for vertical
and horizontal installation. The product must
be mounted in such a way to allow future
service and maintenance. Ensure that the
front is accessible and can be fully opened. A
distance of 80 mm is required to remove the
front.
When mounting a product in stainless steel,
the protective plastic shall remain on the
product. The plastic is removed only when
mounting and installation are completed. Be
careful to not damage the surfaces.
Sierra
Installation and operating instructions
Vertical mounting
The air curtain is mounted vertically as close
as possible to the door. For the best effect air
curtains should be placed on both sides of the
opening.
The air curtain is installed on adjustable feet
which makes it possible to compensate for
any surface undulations. The feet are attached
to the floor with fasteners appropriate to the
surface and covered by a frame. Fasteners are
not included. A drilling template for the floor
is included in delivery and also available at
www.frico.net.
Note! The air curtain must be secured in the
wall or ceiling. The M8 press nut on the top of
the unit is used for this, see figure.
The extension hood (accessory) fills the space
between the unit and the ceiling and provides a
neater installation.
See the introduction pages.
Horizontal mounting
The air curtain is installed horizontally with the
outlet air grille facing downwards as close to
the door as possible. Minimum distance from
outlet to floor for electrically heated units is
1800 mm. For other minimum distances, see fig.
Mounting with wall brackets
Wall brackets SIFW are available as accessories.
Two brackets are required for each unit.
Horizontal mounting on the ceiling
Threaded rods, wire suspension kits and ceiling
brackets for ceiling mounting are available as
accessories.
Opening the vertical unit
To proceed with electrical and water
connections, the front must be removed. See
the introduction pages. For a better accessibilty,
the inlet grille and the cover panel behind it can
also by removed as well as the back of the unit.
• Disconnect the power supply.
Removing the front
• Remove the 4 screws accessibles through the
outlet grill.
• Open the front and pull it sideways/outwards
to remove it.
EN
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