AERMEC Omnia HL 11 CM, Technical And Installation Booklet

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9
0 , 3 0 , 5 0 , 7 1 , 0 2 , 0
0
0
1 0
2 0
3 0
4 0
5 0
Particle diameter [
µ
m]
Efficiecy [%]
= Aermec HL hight efficiency filter
= Standard filter for fan coil unit
ELECTROSTATICALLY PRECHARGED AIR FILTER
SELECTION CRITERIA
Since OMNIA HL fan coils have front aspiration, they are
ideal for ceiling mounting, vertical wall mounting and, with
suitable skirts, floor mounting too.
The tables in TAV. 1 to TAV.4 show sensible and total coo-
ling capacity at maximum fan speed as a function of water
inlet temperature, water heat drop and dry and wet bulb air
temperature for sensible and total cooling capacity respecti-
vely. Performance for medium and minimum fan speeds
can be obtained by applying the relevant correction factors.
The diagrams in TAV. 5 to TAV.8 show the heating capacity
at maximum fan speed as a function of water flow and the
difference in temperature between the water inlet and the
air inlet for two row coils (standard). Performance for
medium and minimum fan speeds can be obtained by
applying the relevant correction factors.
The diagram in TAV. 9 shows the coil's load loss as a func-
tion of water flow at a mean temperature of 10°C.
Performance for other water circuit temperatures can be
obtained by applying the relevant correction factors.
TAV. 10 and TAV.11 show sound power and sound pressu-
re levels respectively at various fan speeds.
ELECTROSTATICALLY PRECHARGED AIR FILTER
Filter fire resistance is Class 2 ( UL 900).
The easy to remove air filter is delivered in sealed packa-
ging together with the fan coil. The packaging should only
be opened at the moment of installation.
The electrostatically precharged air filter combines normal,
mechanical filtration of the air passing through it with an
electrostatic filtration that attracts dust and significantly
improves performance.
The filter's electrostatic charge lasts for 2 years after the pro-
tective packaging is opened. After this, the filter acts only as
a normal filter. For this reason it is important to replace the
filter with a new one at these intervals.
Clean the filter frequently. Use a vacuum cleaner to remove
built up dust. Avoid water or detergents if possible since
they greatly accelerate loss of the filter's electrostatic char-
ge.
THE FAN GROUP
The fan group is fitted directly on the fan coil frame and
comprises a set of extremely silent running and compact
double intake centrifugal fans. The three speed electric
motor is protected against overload and features a perma-
nently active condenser. The motor is coupled directly to
the fans. Vibration is damped by elastic mountings.
The fan screws (cochleas) can be opened for inspection
and thorough internal cleaning (by personnel with the
necessary technical skills).
HEAT EXCHANGE COIL
The coil is a two row copper pipe coil with aluminium fins
mechanically fitted by expansion of the pipes. The terminals
are fitted with female unions and air bleeders at the top.
The coil can be reversed on site.
CONDENSATION DRAIN
This connection permits the condensation that forms inside
the cooling unit to be drained off.
WATER CONNECTIONS
The female union water connections are located on the left
hand side panel. The coil can be reversed on site if requi-
red.
MAIN FRAME
The frame is made from suitably thick sheet metal and is
galvanised to ensure protection against corrosion. The frame
also features closed cell thermal insulation with Class 1 fire
resistance.
The rear of the frame has holes for wall mounting the
appliance. To facilitate ceiling mounting, hung models are
provided with two brackets for fixing to the sides of the
frame. All appliances come complete with a condensation
drip tray that can be easily removed for thorough cleaning
(only by personnel with the necessary technical skills).
CABINET HOUSING
The fan coil cabinet is manufactured in sheet metal, suitably
treated to ensure excellent rust and corrosion resistance.
The cabinet is available in two colours.
HEAD WITH SLAT THAT CAN BE DIRECTED
The head is made of plastic and has a RAL 7031 colour if
combined with the OMNIA HL (“M” versions) with metallic
grey colour cabinet (FIAT656 colour) or RAL 7044 if combi-
ned with the OMNIA HL with a light coloured cabinet
(colour RAL 9002).
When the grill fins are fully closed, a switch stops the fans,
thus preventing further transfer of heat between the unit and
the room.
The head also houses the control panel (in versions with
control panel), under a protective door.
Crossing speed: 1 m/sec