Bedienungsanleitung Remeha E-HP AW 44 Cool Plus B (Seite 21 von 44) (Englisch)

805754

Zoom out

Zoom in

Vorherige Seite

1/44

Nächste Seite

4.2 Operating principle

4.2.1 Operating principle for heating

The E-HP AW heat pump extracts energy from the outdoor air and uses it

to heat up a water flow. The heated water flow is then used in a heating

system and for domestic hot water supply.

The energy of the outdoor air is lead to a refrigerant, which heats up and

vaporizes. The compressor increases the pressure and thus the

temperature even more. In the plate heat exchanger (condenser), the

refrigerant condenses, releasing its heat to the hot water circuit and/or

buffer tank. The refrigerant cools down and thus condensates. It is then

fed to the evaporator again through an expansion valve, which reduces

the pressure of the fluid.

The devices with a larger capacity (>48 kW) work in multiple stage

operation. Additional compressors will be deployed in case of increased

heat demand. In normal operation the compressors work alternately. The

leading compressor changes every time the machine starts. The fans will

continuously adjust their speed in accordance with the heating/cooling

demand.

When the outdoor temperature is low or the humidity in the air is high

there might be a build up of ice on the evaporator. If the amount of ice

becomes too much the heat pump will automatically start a defrost

sequence. During this the circulation pump will run at the maximum speed.

At extremely low outside temperatures the unit may occasionally shut

down for short periods to protect itself during operation.

4.2.2 Active cooling

The E-HP AW 'Cool' versions are equipped with a module for active

cooling. This cooling function is based on the reversed functioning of the

heat pump. The heat pump is equipped with a 4-way valve to reverse the

operation. If the heat pump will be used for cooling, the distribution system

inside the building must be suited for this type of operation. The low supply

temperature in cooling mode could cause condensation of the installation

and the pipework must therefore be properly insulated.

In case a low supply temperature during cooling mode is required (<15°C),

an external 4-way valve must be placed in the installation to ensure that

the heat exchanger will remain operating in counterflow.

4.2.3 Hydraulic scheme

The installer is responsible for the design of the hydraulic installation.

We advice to connect the heat pumps to a buffer that has a capacity of

15 L/kW.

As air in the system can lead to serious damages we also advice to

install adequate venting capabilities in the return line to the installation.

Each heat pump needs to be secured with flow protection. This is to

protect the installation in case the flow is restricted and goes under the

required minimum flow.

Below are two examples of a hydraulic scheme with an E-HP AW. For

other examples of hydraulic schemes, contact BAXI

4 Description of the product

7697291 - v.05 - 11032022 21

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Remeha E-HP AW 44 Cool Plus B Seite 21

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info