Installation Information - AERMEC Omnia HL 11 N Use And Installation Manual

INSTALLATION
IMPORTANT: OMNIA fan coils are
designed for indoor use.
IMPORTANT: check that the power
supply is disconnected before carrying
out any procedures on the unit.
WARNING: before carrying out any
work, put the proper individual protection
equipment on.
IMPORTANT: the device must be
installed in compliance with national
plant engineering rules.
IMPORTANT: the electrical connections,
plus the installation of fan coils and
relevant accessories, should only be
performed by a technician with the
necessary technical and professional
expertise to install, modify, extend and
maintain systems, and who is able to
check the systems for purposes of safety
and correct operation (in this manual such
technicians will be indicated with the
general term "personnel with specific
technical skills").
SYSTEM EXAMPLES
Key:
SW Water temperature sensor
VCH Solenoid valve (Heating / Cooling)
SA Room temperature probe
AIR
SA SW
OPERATING ENVIRONMENT
The units are designed for installation in closed environments in conditions of
'urban' , non-marine atmosphere with non-corrosive and non-dusty characteristics.
Under no circumstances the following concentrations of pollutants in the air, in
which the unit must operate, shall be exceeded:
SO <0,02 ppm
2
H S <0,02 ppm
2
NO,NO <1 ppm
2
NH <6 ppm
3
N O <0,25 ppm
2
The unit should not be installed in locations characterized by the presence of
flammable gases or acidic or alkaline substances.
Otherwise the coils and the internal components of the equipment could suffer
serious and irreparable damage from corrosi
32
IHLNLJ 2302 - C6887213_01
In the specific case of electrical wirings, the
following must be checked:
- Measurement of the electrical system
insulation strength
- Continuity of the protection wires
IMPORTANT: Install a device, main
switch, or electric plug so you can fully
disconnect the device from the power
supply.
The essential indications to install the device
correctly are given here.
The installer's experience will be necessary
however, to perfect all the operations in
accordance with the specific requirements.
The water, condensate discharge and electrical
circuit ducts must be provided for.
The fan coil should be installed in such a way
as to facilitate routine (filter cleaning) and
special maintenance operations, as well as
access to the air drain valve on the side of the
unit frame (connections side).
Do not install the unit in rooms where there
are inflammable gases or acid/alkaline
substances which can provoke irreparable
AIR
VCH
SA SW
WARNINGS FOR THE QUALITY OF THE WATER CIRCULATING
IN THE COILS
It is recommended to perform an analysis of the water circulating in the coil
focusing on the research of the possible presence of bacteria (detection of
iron bacteria and micro-organisms that can produce H2S or chemically reduce
sulphates) and on the chemical composition of the water, to prevent corrosion
and fouling inside the tubes.
The water circuit must be supplied and replenished with treated water that does
not exceed the threshold levels indicated below.
Total hardness in mmol/l
Chlorides [CL
Sulphates [SO
Nitrates [NO
Dissolved iron
Dissolved oxygen
Carbon dioxide [CO
Resistivity
pH
damage to the copper-aluminium heat
exchangers or internal plastic components.
Do not install the unit in workshops or
kitchens, where oil vapours mixed with the
treated air can be deposited on the exchange
coils (reducing their effectiveness) or on
the internal parts of the unit (damaging the
plastic components).
The fan coil must be installed in such a position
that the air can be distributed throughout
the room and so that there are no obstacles
(curtains or objects) to the passage of the air
from the suction louvers.
You are advised not to install the fan coil
above objects that suffer from damp or wet
because in some conditions condensation
may form on the external frame of the
equipment with the possibility of dripping
or failures may occur in the hydraulic
system and condensate drainage with the
consequent spilling of liquid.
The assembly site must be chosen in such a
way that the maximum and minimum
ambient temperature limits are respected
0-45°C (<85% R.H.).
AIR
VCH
SA SW
l < mmoll/l < 1,5
] < 10 mg/litre
-
] < 30 mg/litre
2-
4
] = 0 mg/litre
-
3
< 0,5 mg/litre
4 < [O ] < 9 mg/litre
2
] < 30 mg/litre
2
20 Ohm∙m < Resistivity< 50 Ohm∙m
6,9 < pH < 8