OSTBERG HERU 400-2400 S, Руководство пользователя

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Climatix HERU® 400-2400 2018-02-13
Flowchart and function descriptions
GTU Outside temp sensor EMS-RV Rotation monitor EMS RU1 Room unit
GP1 Supply air pressure
sensor CP1 Circulation pump heating Supply-EC
Supply air fan (TF) EC motor
GP2 Extract air pressure
sensor CP2 Circulation pump cooling Extract-
EC Extract air fan (FF) EC motor
GP3 Supply air filter sensor SV1 Valve actuator heating
GP4 Extract air filter sensor SV2 Valve actuator cooling
TEMPERATURE REGULATION
The temperature can be regulated as constant supply air regulation or room
regulation/extract air regulation. With constant supply air regulation, the air supply
temperature remains constant. With room regulation, a sensor is placed in the room
to obtain a constant room temperature (suitable when a cooling coil is installed).
Extract air regulation works in a similar way, but with the difference that the
temperature is measured on the unit’s
extract air side.
The temperature can be regulated in five stages:
1. Cooling re cooling: The control unit can regulate a cooling coil (e.g.
cooling water from geothermal heating), when the cooling recovery from the rotor is
insufficient.
2. Cooling recovery and/or regulated cool down. The rotary heat exchanger starts
if the extract air temperature is lower than the outside temperature.
•
Regulated cool down: If the temperature outside is lower than the desired room
temperature and is not sufficient for lowering the room temperature, cool
down will start.
3. Outside temperature = desired temperature:
When the outside temperature is
the same as the desired supply air temperature, the rotor will stop.
4. Heat recovery: The rotary heat exchanger starts to recover the warmer indoor
temperature.
5. Heat re heating: In climate zones in which the rotary heat exchanger, in
spite of its high efficiency, is not sufficient to achieve the desired supply air
temperature, the control unit can also regulate either an electric heater or a heating
coil connected to the duct.
“Night cooling” is a function which utilizes the cool outdoor temperature and cools
down the building at night without using any other additional energy. The fan speed is
boosted when the ratio between the outside temperature and the extract air
temperature is within the programmed criteria.