Hydraulic Connections; Condensate Drain Connection - AERMEC DMH Série Manuel D'utilisation, D'installation Et D'entretien

EN
CONNECTION TO THE DUCTS
IMPORTANT:
IT IS PROHIBITED TO START THE UNIT
IF THE FAN VENTS ARE NOT DUCTED
OR PROTECTED WITH ACCIDENT-
PREVENTION MESH ACCORDING TO
CURRENT REGULATIONS.
• Any air ducts must feature a
generous size, according to the
aeraulic features of the unit. The
available static pressures do not
generally allow for high routes
and free intake functioning is the
preferred option. The horizontal
units are fitted with a removable
perforated frame at the back
(suction duct to be secured inside
it) and holes on the front panel for a
potential introduction duct.
• It is recommended to use insulated
ducts to prevent the formation of
condensate and attenuate the noise
level.
• If using stiff ducts, to prevent
transmission of any machine
vibrations into the environment it
CONNECTION TO THE DUCTS
• It comes with "female" couplings
with a GAS threading (positioned
inside in the recessed version)
• Tightening must be performed
carefully to prevent damage to the
collectors in the coil.
• The water inlet and outlet must
allow for the counterflow thermal
exchange: therefore, follow the
26
is recommended to place an anti-
vibration joint between the fan
vents and the ducts. The electrical
continuity must however be
guaranteed between the duct and
the machine via the earth cable.
• Avoid, as much as possible, short-
circuits between the air drawn
from the rooms (to be processed)
and the air introduced into them
(processed).

HYDRAULIC CONNECTIONS

• The installation and connection
operations of the hydraulic
pipes are operations that can
compromise the good functioning
of the system or worse, cause
i r reve rs i b l e d a m a ge to t h e
machine. These operations must
only be performed by specialised
staff.

CONDENSATE DRAIN CONNECTION

• The DMH units are fitted with a drip
tray featuring a drain with a 14 mm
directions of the WATER INLET and
WATER OUTLET.
• Provide for a water drain valve in
the lowest point. If the route of the
piping is longer than the route of
the connections, also provide for an
air vent valve in the highest point.
The unit is fitted with its own air
vent valve near the top connection.
• Clamp the pipes adequately to the
outside of the unit to prevent the
DMH - DMH_C - DMV
external diameter.
• The drain system must have a
suitable siphon for preventing
the undesired entry of air into
the depressurised systems or the
undesired exit of air in pressurised
systems. This siphon is also useful
to prevent the infiltration of odours
or insects
• The dimensioning and version of the
siphon are reported in the figure
here below.
• The siphon must finally have a cap
for cleaning the lower part or must
however allow quick disassembly for
periodical cleaning.
• The route of the condensation
drain pipe must always be tilted
outwards, as well as being as short
as possible and with as few bends as
possible.
• A l ways m a ke s u re t h at t h e
condensate flow pipe does not
stress the unit drain connection,
envisioning suitable bracketing.
weight being unloaded onto the coil
• Insulation must be flush to the
panel in order to prevent the danger
of condensation
• Envision on-off valves to isolate
the machine from the rest of the
circuit in the case of extraordinary
maintenance.