Hoval RoofVent R Series, Original Operating Manual

Page: 8 / 48

3.4 Operating modes
The units have the following operating modes:
■ Ventilation
■ Ventilation (reduced)
■ Air quality
■ Recirculation (depending on unit type)
■ Exhaust air
■ Supply air
■ Standby
■ Forced heating
The TopTronic
®
C control system regulates these operating modes automatically
for each control zone in accordance with the specifications in the calendar. The
following points also apply:
■ The operating mode of a control zone can be switched over manually.
■ Each RoofVent
®
unit can operate individually in a local operating mode: Off,
Recirculation, Supply air, Exhaust air, Ventilation.
Code Operating mode Description
VE Ventilation
The unit blows fresh air into the room and exhausts polluted room air. The
room temperature set value day is active. Depending on the temperature
conditions, the system continuously controls:
■ the energy recovery
■ the heating/cooling
Supply air fan ................... on
*)
Exhaust air fan ................. on
*)
Energy recovery ............... 0-100 %
Extract air damper ............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
*) Adjustable flow rate
VEL Ventilation (reduced)
As VE, but the unit only operates with the set minimum values for the
supply and exhaust air volumes
Supply air fan ................... MIN
Exhaust air fan ................. MIN
Energy recovery ............... 0-100 %
Extract air damper ............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
AQ Air quality
This is the operating mode for demand-controlled ventilation of the room.
The room temperature set value day is active. Depending on the tempera-
ture conditions, the system continuously controls:
■ the energy recovery
■ the heating/cooling
Depending on the room air quality, the system operates in one of the
following operating states:
AQ_REC ■ Air quality Recirculation:
When air quality is good, the unit heats or cools in recirculation
operation.
Like REC
AQ_ECO ■ Air quality Mixed air:
When ventilation requirements are medium, the unit heats or cools in
mixed air operation. The supply/exhaust air volume is based on the air
quality.
Supply air fan ................... MIN-MAX
Exhaust air fan ................. MIN-MAX
Energy recovery ............... 0-100 %
Extract air damper ............ 50 %
Recirculation damper ....... 50 %
Heating/cooling ................ 0-100 %
AQ_VE
■ Air quality Ventilation:
When ventilation requirements are high, the unit heats or cools in pure
ventilation operation. The supply/exhaust air volume is based on the air
quality.
Supply air fan ................... MIN-MAX
Exhaust air fan ................. MIN-MAX
Energy recovery ............... 0-100 %
Extract air damper ............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
RoofVent
®
RH | RC | RHC | R
Construction and operation
Art.No. 4 214 745-en-04 / Page 8