Hoval RoofVent CON-9, Руководство по конструкции

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2 ColdClimate design
RoofVent
®
units in ColdClimate design are suitable for use in
areas where the outside temperatures fall below -30 °C. The
following features ensure additional frost protection:
■ Cold-resistant materials
■ Fans with downtime heating
■ Valve actuators with spring return and additional heating
■ Heating coil or heating/cooling coil type X with water-side
frost monitoring
Note
The dimensions, weights and performance data of
coil type X are the same as for type C.
■ Safety switching in DigiNet: delayed starting response
when switching to ventilation
■ Defrost switch for the plate heat exchanger (controlled via
a differential pressure switch)
The application limits differ from those of the standard design
as follows:
Type cc40 cc60
Fresh air temperature min. °C -40 -60
Extract air relative humidity
1)
max. % 40 40
Moisture content of extract air
1)
max. g/kg 5 5
1)
in winter
Table K3: Application limits of the ColdClimate design
Please note the following:
■ A Richardson constant hydraulic switch is required for the
water-side frost monitoring. An injection system should
therefore always be installed.
■ If control of the return temperature (return flow increase)
is provided for the heat generator, this must not have a
negative impact on the heating of the RoofVent
®
units.
3 Explosion-proof design
RoofVent
®
units in explosion-proof design are used in halls
where potentially explosive atmospheres occasionally occur
(Zone 1).
For more detailed information, please contact Hoval
customer service.
4 Hygiene design
RoofVent
®
units in hygiene design are suitable for use in
applications with more stringent hygiene requirements. The
unit design corresponds to VDI Guideline 6022. These units
differ from the standard design as follows:
■ Fresh air filter class F7
■ Extract air filter class F5
■ All open-pored sound proofing and seals are coated.
■ The filter holder is also sealed.
Note
All other requirements of VDI Guideline 6022 are also
met by RoofVent
®
units in standard design.
Technical data
The technical data changes due to the additional filter pres-
sure drop:
■ The nominal air flow rates and the maximum mounting
heights are reduced by approx. 8 %.
■ The heating and cooling capacities decrease by
approx. 5 %.
■ The factory setting of the differential pressure switches is
450 Pa for the fresh air filter and 350 Pa for the extract air
filter.
Options
ColdClimate design