Type

System

 HL BS EPG
This indicates what is provided by the distribution system: Hot, Cold, or Hot & Cold. In Hot & Cold, both hot and cold water are transferred to the same emissive device (change-over) depending on the need. A distribution network is also required for a heating or cooling coil of an air handling unit, however, for this a combined Hot & Cold network cannot be specified and two separate networks (one for hot, and the other for cold) should be specified.

§ Hot-water net distribution network for heating

§ Cold-water net distribution network for cooling

§ Hot- and cold-water net distribution network for both heating and cooling (change-over)

Generation

[Selection] BS EPG
The generation configuration is chose here from the generators for heat and/or cold. Only generation configurations can be selected with generators for Hot, Cold, or Hot and Cold, depending on the specified system (Hot, Cold, or Hot and Cold respectively). The selection list is created automatically from all generation resources as specified under the resource Generation.

Other agent than water (e.g. coolant)

 EPG
Checking this box indicates another cooling agent is used other than water, such as a coolant in multi-split systems. A correction will be made to the distribution efficiency for heating and/or cooling.

Accumulator present outside heated space

 EPG
An accumulator for the heating system may be located outside the heated space in housing. If this is the case it can be indicated here and a correction on the distribution efficiency follows. This option has no effect in case of non-residential buildings.

Control mode

 HL BS
The control method is characterized by one of the following three types:

•      Per room: In this control mode the temperature in all rooms can be guaranteed. An example of a control mode per room is a control with thermostatic valves in all rooms (not in combination with a room thermostat), for which the supply temperature is constant or being controlled by means of a heat curve.
The reheat surcharge for control per room is determined based on the accumulated surfaces in the room (see Reheat surcharge).

•      Room thermostat: In this control mode the temperature cannot be guaranteed in rooms other than the location of the thermostat. The room of reference in which the thermostat is located is defined before the installation concept can be linked to the given distribution network. Subsequently the system is activated or deactivated based on the difference in temperature between the specified design temperature and the actual air temperature in the room of reference. The room of reference of the thermostat can be set after the geometry definition and the specification of the various rooms, as specified in Temperature control rooms.
The reheat surcharge for a given room is determined as a percentage of the transmission and ventilation in case of room thermostat control. The reheat surcharge in other rooms is based on this same percentage as well. The reheat surcharge is determined for each room seperately if the room has not reheat surcharge.

•      Adaptive, or adaptive control, is a self-learning system which adapts to the results of the previous day(s). The burner should switch on and off frequently to maintain a constant room temperature. In non-adaptive control, the switching cycle is set by the installer. This is done by setting the anticipation elements in mechanical thermostats, and by choosing the right set points in digital control. In case of an adaptive thermostat, the switching cycle is set by the installer as well; however, these settings are adjusted by the control. The control results will improve after a few days. (Source: CV Tuning)
No reheat surcharge is applied in adaptive control. If zones have been specified, the operating mode ‘Night set-back’ and the control ‘per room’ are applied.