Air Distribution

Ducts present

 EPG
This box indicates ducts are present for the ventilation system. In case of a central system with air ducts a correction is applied to the chargeable ventilation capacity depending on the airtightness class of the ducts.

Ducts indoor or inside building

 EPG
In this box it can be indicated whether the ducts are indoor or inside the building. This is used in the energy performance calculation EPG for housing; in case of non-residential building this option does not affect the results. This box only appears when ducts are present as well as a heating coil in the system. The distribution efficiency for the heating system is determined partially based on this checkbox.

Insulated ducts

 EPG
In this box it can be indicated that the ducts have been insulated, which affects the energy performance EPG calculation both for housing and non-residential buildings. This box only appears when ducts are present as well as a heating coil in the system. The distribution efficiency for the heating system is determined partially based on this checkbox.

Airtightness class

 EPG
The airtightness class of the air ducts in the system can be specified here. This parameter is only asked for if air ducts are present. A correction to the chargeable ventilation capacity is applied based on the airtightness class.

•      Unknown

•      Class A

•      Class B

•      Class C

•      Class D

Location air supply

 EPG
In case of housing, it is indicated whether a central supply or a supply at the facades is applied. This distinction is used in the energy performance calculation. The location of air supply is only asked for if air ducts are present and a heating coil has been specified. The distribution efficiency of the heating system is determined partly based on the location of air supply.

•      Central supply

•      Supply at the facades

Temperatures

 BS
The heat curves are important in the air handling unit to optimize the energy reduction. In temperatures, the heating curve is determined, which can be done in one of the following three ways:

•      Default; In this setting a constant temperature of 18 °C is applied in both daytime and night time operation;

•      Constant: In this setting a constant, user specified, temperature is applied in both daytime and night time operation;

•      Curve: The complete heating curve is defined manually. For all values of outside temperature (T_outside) a value of the heating- or cooling water (T_water) can be specified. Separate curves can be defined for daytime operation and night time operation.