Hoval RoofVent KG, Original Operating Manual

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Code Operating mode Description
REC Recirculation
On/Off recirculation operation with TempTronic algorithm: during heat demand, the
unit draws in room air, heats it and blows it back into the room. The room temperature
set value day is active. The flow rate is controlled in 2 stages.
Supply air fan ................... 0 / MIN / MAX *)
Exhaust air fan ................. off
Energy recovery ............... 0 %
Extract air damper ............ closed
Recirculation damper ....... open
Heating ............................ on *)
*) Depending on heat demand
DES
■
Destratification:
To avoid heat build-up under the ceiling, it may be appropriate to switch on the fan
when there is no heat demand (either in permanent operation or in on/off opera-
tion depending on the temperature stratification).
EA Exhaust air
The unit extracts spent room air. There is no room temperature control. Unfiltered
fresh air enters the room through open windows and doors or another system
provides air supply.
Supply air fan ................... off
Exhaust air fan ................. on *)
Energy recovery ............... 0 %
Extract air damper ............ open
Recirculation damper ....... closed
Heating ............................ off
*) Adjustable flow rate
SA Supply air
The unit blows fresh air into the room. The room temperature set value day is active.
Depending on the temperature conditions, the system controls the heating. Spent
room air passes through open windows and doors or another system provides
extraction.
Supply air fan ................... on *)
Exhaust air fan ................. off
Energy recovery ............... 0 % **)
Extract air damper ............ open
Recirculation damper ....... closed
Heating ............................ 0-100 %
*) Adjustable flow rate
**) Fresh air and bypass dampers are open
ST Standby
The unit is ready for operation. The following operating modes are activated if
required:
CPR ■ Cooling protection:
If the room temperature drops below the set value for cooling protection, the unit
heats up the room in recirculation operation.
Supply air fan ................... MAX
Exhaust air fan ................. off
Energy recovery ............... 0 %
Extract air damper ............ closed
Recirculation damper ....... open
Heating ............................ on
NCS
■
Night cooling:
If the room temperature exceeds the set value for night cooling and the current
fresh air temperature permits it, the unit blows cool fresh air into the room and
extracts warmer room air.
Supply air fan ................... on *)
Exhaust air fan ................. on *)
Energy recovery ............... 0 %
Extract air damper ............ open
Recirculation damper ....... closed
Heating ............................ off
*) Adjustable flow rate
L_OFF Off (local operating mode)
The unit is switched off.
Supply air fan ................... off
Exhaust air fan ................. off
Energy recovery ............... 0 %
Extract air damper ............ closed
Recirculation damper ....... open
Heating ............................ off
– Forced heating
The unit draws in room air, warms it and blows it back into the room. For example,
forced heating is suitable for heating the hall before taking the control system into
operation or if the controller fails during the heating period. Connecting a room ther -
mostat makes it possible to specify a room temperature set value.
Forced heating can be activated and set as required by the Hoval service technician.
Supply air fan ................... MAX
Exhaust air fan ................. off
Energy recovery ............... 0 %
Extract air damper ............ closed
Recirculation damper ....... open
Heating ............................ on
Table 1: RoofVent ® KG operating modes
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RoofVent ® KG
Operating instructions
Construction and operation
4 220 755-en-00 4 220 755-en-00