Airwell VH2N 05 [2/16] Casing
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Airwell VH2N 05 [2/16] Casing

Airwell VH2N 18 [2/16] Casing
Page 2
Design Features
Integrated fan plenum
with or without air filter
Electrical box with grommets
Auxiliary condensate drain pan (optional)
Fan-motor assembly
Cooling and heating coils
(4-pipe system)
Heating coil connecting headers
equipped with air vent and drain plug
uPresentation
The VH2N fan coil units has been specially designed to meet the
job requirements that call for false-ceiling installations and for
air distribution by ductwork requiring high static pressure (up to
220 Pa for larger units).
uCasing
Fabricated from 1.0 mm thick galvanized sheet steel with the fixing
brackets located at the top part of the casing for installation to the
ceiling.
The condensate drain pan is made from 1.0 mm thick galvanized
sheet steel, painted and is externally insulated by 2 mm thick closed
cell polyethylene foam, having M1 fire classification.
An optional auxiliary drain pan (supplied with valves) can be
provided to collect condensates from coils headers.
Access to internal components (fan-motor assembly and coils) for
service and maintenance works is facilitated by dismantling the
central bottom panel of the fan coil unit, without removing the
distribution ducts.
uFixation
The unit is supplied with 4 slotted fixing brackets as standard.
uCoil compartment
It is lined with 10 mm thick closed cell polyethylene foam insulation,
having M1 fire classification.
It incorporates water coils which are fitted with 1/2"Ø female
threaded couplings for units up to model VH2N 10 and with Rc 3/4"
to Rc 1"1/4 male threaded couplings for larger units.
Coils have 4 or 5 rows and 3+1 or 4+1 rows, respectively available
for 2 or 4 pipe systems.
Coils are leak tested under water (21 bar) and are suitable for a
maximum working pressure of 10 bar.
uFan compartment
It incorporates a fan-motor assembly of which the fan is composed of
double inlet forward curved type aluminium wheels and galvanized
sheet steel scrolls.
Motor is of direct drive type having 3 or 6 speeds according to the
models.
Motor is suitable for nominal voltage of 230 V / 1 Ph / 50 Hz and
is equipped with a built-in thermal overload protection of automatic
reset type.
uAir filter
Filter consists of cleanable synthetic media (sewn on wire frame)
having G2 or G3 classification. The G3 synthetic media on a
reinforced frame can be supplied as optional.
Filter is removable and is easily pulled out downward for cleaning
or replacement, after removing the access metal plate.
uOptions and accessories
➜Electric heater for 2-pipe/2-wire system
Electric heater consists of sheathed type heating elements equipped
with a manual reset and an automatic reset high temperature
cutout switches. The electric heater On/Off control, made thanks to
a relay, can be mounted as optional.
Standard voltage is single phase 230 V.
➜Regulation valves
On/Off (thermal type actuator), 2-way or 4-way type for 2-pipe or
4-pipe systems.
Valves are not available for model VH2N 27. Valves for models
VH2N 03/05/07/10 are supplied mounted, those for models VH2N
15/18/21/24 are supplied loose.
➜Controls
Electromechanical, electronic or digital type.
➜Fan speed relay
Relay for fan speed control can be mounted as optional for models
VH2N 15/18/21/24/27.
Cooling coil connecting headers
equipped with air vent and drain plug

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