Assortment / System Description

Central applications
Automation station for HVAC supply and demand signals and manual control for lighting and blinds
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24.1.6 HVAC supply chain heat pump over BACnet
The following list includes all data points that can be read and written from a
BACnet primary plant. The items ensure coordination between primary plant
and the room. In addition, appropriate Desigo primary application for the given
room function is mentioned.
Data point name Description Desigo primary application
HpuSrcReq The central function prepares
one heat pump demand
acquisition and evaluation to
the connected rooms for the
primary plant. The enumerate
result can include:
0:No
1:Yes
None
HpuSrcCmd The central function prepares
one heat pump demand
acquisition and evaluation to
the connected rooms for the
hard wired central heat pump
source. The enumerate result
can include:
0:Off
1:On
None
CenHpuSrcInAvl Hard wiring of the primary
plant: Central heat pump
source input is available
None
CenHpuSrcAvl BACnet reference from the
primary plant: Central heat
pump source is available
None
The source request is pending if at least one room reports a source demand.
Central functions permit the central override of the enable heat pump source
for all heat pumps in the supply group. The following parameters can be used:
Description Name Default value
Enable heat pump source override EnHpuSrcOvrr 0:No
Heat pump source override HpuSrcOvrr 0:Off
Source request
Heat pump source
Central override