Reduction Of The Unit's Sound Level - Hitecsa EQU-PF 233 Manual De Instalación, Uso Y Mantenimiento

The section of the supply channel must always be constant and equal
to that of the fan. The KRAM kit (outlet antivibration connection) is
available to prevent vibrations from being transmitted and allows the
unit to be separated from the channel. It is however recommended to
of the walls of the room.
introduce flexible connections on the air channel at the crossing points
The room in which the unit is to be installed must have an opening that
allows the air to be drawn from the outside through a section that is
equal to the surface of the finned coil.
The intake can be channelled. The KRAS kit (inlet antivibration
connection) is available to prevent vibrations from being transmitted.
When the channelling is implemented, the total air pressure drops at
nominal flow rate must be evaluated, which must be less than the
available head at the same capacity.
SECTION II: INSTALLATION AND MAINTENANCE
Model L1
233 mm 1000
mm 1000
238
mm 1000
245
250 mm 1000
260 mm 1000
mm 1000
265
270 mm 1000
280 mm 1000
290 mm 1000
2100 mm 1000
2115 mm 1000
2130 mm 1000
2145 mm 1000
2160 mm 1000
However it is installed, the coil inlet air temperature (ambient air) must
remain within the set limits.
II.4.4

Reduction of the unit's sound level

Correct installation involves taking precautions aimed at reducing the
noise deriving from the unit's standard operation.
IMPORTANT!
Incorrect positioning or installation of the unit can
amplify noise levels or vibrations generated during
operation.
When installing the unit, bear the following in mind:
 non-soundproofed reflecting walls near the unit, such as terrace
walls or building perimeter walls, can increase the total sound pressure
level read near the appliance by 3 dB(A) for every surface (e.g. 2 corner
walls correspond to a 6 dB(A) increase);
 install suitable antivibration mounts under the unit to prevent
vibrations from being transmitted to the building structure;
 solid floor frames can be set up on top of buildings to support the
unit and distribute its weight to the bearing elements of the building;
 make all water connections using elastic joints; pipes must be firmly
supported by solid structures. If the pipes are routed through walls or
panels, insulate with elastic sleeves
 If, after installation and start-up of the unit, structural vibrations are
noted in the building, which cause such strong resonance to generate
noise in certain parts of the building, contact a qualified acoustic
technician for a complete analysis of the problem.
The following accessories are available to reduce noise and
vibration:
KSA - Antivibration supports.
KRAS – Inlet antivibration connection
KRAM – Outlet antivibration connection
When installing the unit, bear the following in mind:
 non-soundproofed reflecting walls near the unit can increase the
total sound pressure level read near the appliance by 3 dB(A) for every
surface;
 install suitable antivibration mounts under the unit to prevent
vibrations from being transmitted to the building structure; make all
water connections using elastic joints; pipes must be firmly supported
by solid structures. If the pipes are passed through walls or panels,
insulate with elastic sleeves. If, after installation and start-up of the unit,
structural vibrations are noted in the building, which cause such strong
resonance to generate noise in certain parts of the building, contact a
qualified acoustic technician for a complete analysis of the problem.
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