Hoval RoofVent CON-9, Design Handbook

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8 Specification texts
Supply and extract air handling unit RoofVent
®
condens,
consisting of:
■ Roof unit with energy recovery and
heat generation assembly
■ Filter box
■ Heating section
■ Air-Injector
■ Control systems
All components are wired ready-to-connect.
8.1 Roof unit with energy recovery and heat generation
assembly LW.C
Self-supporting, weatherproof casing made from Aluzinc
sheet steel, insulated on the inside (fire protection class B1),
with weather louvre door for easy access to the fresh air filter
and DigiUnit terminal box, access panel with quick-release
fasteners for easy access to the extract air filter, isolation
switch outside for interruption of the high-voltage supply.
The roof unit includes:
■ Heat generation assembly, consisting of gas condensing
boiler, conduit, circulating pump, expansion vessel and
condensate drain with neutraliser
■ Fresh air filter (bag filter, class G4) with differential pres-
sure switch for filter monitoring
■ Opposed fresh air and recirculation dampers with actuator
■ Plate heat exchanger made of aluminium with bypass,
condensate collecting channel and siphon to the roof,
including ER and bypass dampers with actuators to regu-
late the energy recovery
■ Maintenance-free, direct-drive supply air fan
■ Maintenance-free, direct-drive exhaust air fan with
frequency converter
■ DigiUnit terminal box with DigiUnit controller as part of the
Hoval DigiNet control system.
DigiUnit controller DU5
Control module, fully wired with the ventilation unit compo-
nents (fans, actuators, temperature sensor, frost controller,
filter monitoring, heat generation assembly):
■ controls the integrated gas condensing boiler with modu-
lating burner
■ controls the unit, including the air distribution, according to
the specifications of the control zone
■ controls the supply air temperature using cascade control
High-voltage section
■ Mains power terminals
■ Isolation switch (can be operated from the outside)
■ Motor contactor for each fan
■ Motor contactor for the circulating pump
■ Fuse for the electronics
■ Transformer for the DigiUnit controller and the actuators
■ Terminals for actuators, temperature sensors and burner
control
■ Control box heating
■ Power supply for the gas condensing boiler
Type LW.C-9/DN5
Nominal air flow rate, supply air/
exhaust air
8000 m³/h
Nominal heat output 60 kW
Heat recovery efficiency, dry 63 %
Active power per motor 3.0 kW
Supply voltage 3 x AC 400 V
Frequency 50 Hz
8.2 Filter box F.C00 / F.C25 / F.C50
Aluzinc sheet steel casing with extract air grille and access
panel for easy access to the heating coil. The filter box
includes:
■ Extract air filter (bag filter class G4) with differential pres-
sure switch for filter monitoring
■ Extract air temperature sensor
■ Sound attenuation body as supply air diffuser
Type F.C __-9
8.3 Heating section H.Z
Aluzinc sheet steel casing, includes the LPHW heating coil
made of copper tubes and aluminium fins and the frost
controller.
Type H.Z-9
Heat output 60 kW
8.4 Air-Injector D
Casing made from Aluzinc sheet steel with:
■ Vortex air distributor with concentric outlet nozzle, adjust-
able vanes and integrated absorber hood
■ Actuator for automatic adjustment of the air distribution
■ Supply air sensor
■ Electric connection box
Type D -9
Floor area reached … m²
RoofVent
®
condens
Specification texts