Heat Demand to Heat Generators

The macro generates a calculated heating demand. The heating demand is calculated when:

In this case the calculated heating demand equals the calculated mixed water temperature setpoint and is sent to the heat generator via the output “HeatDemand”.

The following options can be selected with the parameter SYS-06:

In systems with a good thermal isolation we recommend the option "always during occupancy". With this option the primary heat generator will have a steady setpoint, which reduces the number of switching. Due to the good isolation, the heat losses will be small, if the system temperature is higher than needed.

Table 8.   Parameter List

Description

Value Range

Default Value

Unit

SYS-06: heat demand transmission

0 = no transmission

1 = stop transmission at closed valve

2 = always during occupied periods

0…2

1