Application

Room Functions
Room Coordination Functions for HVAC
46
Siemens Industry, Inc.
Application Note
A6V11692042
Smart Infrastructure – Building Products
2019-04-01
Configuration
Parameters
Description
Object
Pre-loaded Values
Shift of switch-on point for heating state
ShftOnPtHSta
0.0 ºF
Shift of switch-on point for cooling state
ShftOnPtCSta
0.0 ºF
Switch-on delay for heating/cooling changeover
DlyOnHCChovr
2 mins
VAV Ventilation Control
There are different control modes for the ventilation control. The behavior is
selectable by parameter and is dependent on if a room air quality sensor is
available.
Ventilation mode (VentMod) can be set to the following:
⚫ Off
⚫ Minimum (Constant air flow)
⚫ Dcv (Demand controlled ventilation)
1)
⚫ Dcv & Min (Demand controlled ventilation with a minimum flow)
1)
1)
DCV requires air quality sensor in the room
NOTE:
The VAV and FPB application templates have been pre-loaded with the ventilation
mode (VentMod) and airflow minimum (AirFlMin) as shown in the table below.
The parameters can be modified to meet job requirements.
If the default application does not meet job requirements, an application can be
configured and modified to job specifications in ABT Site.
Parameters
Description
Parameter
Pre-loaded settings
Comfort configuration
1:Off
2:Minimum ventilation
3:Demand-controled ventilation
4:Minimum ventilation & Demand-controlled ventilation
CmfCnf
2:Minimum ventilation
Pre-Comfort configuration
PcfCnf
2:Minimum ventilation
Economy configuration
EcoCnf
1:Off
Protection configuration
PrtCnf
1:Off
Minimum room air volume flow for comfort
AirFlMinRCmf
150.0 ft3/min [75.0 l/s]
Minimum room air volume flow for pre-comfort
AirFlMinRPcf
150.0 ft3/min [75.0 l/s]
Minimum room air volume flow for economy
AirFlMinREco
0.0 ft3/min [0.0 l/s]
Minimum room air volume flow for protection
AirFlMinRPrt
0.0 ft3/min [0.0 l/s]