Frico Thermozone AC 500 Original Instructions Manual page 8

GB
The connections will be found in the wiring
diagrams. Use appropriate conduit to secure
the protection class.
Adjusting the air curtain.
The direction of the air stream and the
velocity of the air is to be adjusted depending
on the situation in the opening. Wind-
pressure and under-pressure depending on
different temperature have a negative effect
on air curtains and wants to bend the air
stream inwards the opening. To compensate
for that the air stream is to be directed
outwards.
NB! under-pressure in the building will
significantly reduce the effectiveness of the
air curtain. Ventilation ought to be balanced.
1. Air stream
Make sure the air directors are placed in
a parallel way. Depending on the situation
in the opening tilt the unit outwards
against the door. Found by experience the
recommendation is 10-15° towards the
opening. When the air curtains are used to
protect a cold storage rooms they should be
mounted on the warm side and with the air
stream directed 10-15° towards the warmer
side.
2. Air flow
Adjust the fan speed so that the velocity of
the air stream will be 3-4 m/s 1 m above the
floor.
The above given recommendations are
based on normal conditions. Further
adjustments are depending on the situation in
the opening In some areas the direction and
the speed of the air stream might need to be
adjusted depending of the season of the year.
Maintenance
The fans are driven by maintenance free motors.
The air curtains only require regular inspection and
cleaning at least once a year.
8
Thermozone AC 500
Security
• Ensure that the area around the intake and
exhaust grille is kept free from material
which could prevent the air to flow through
the unit!
• This appliance is not intended for use by
persons (including children) with reduced
physical or mental capabilities, or lack of
experience and knowledge, unless they
have been given supervision or instruction
concerning use of the appliance by a person
responsible for their safety. Children should
be supervised to ensure that they do not
play with the appliance.