User Manual

Application Sheet CEN003
Central function HVAC supply, lighting and blinds operation
DXR2..18-
101A
DXR2..18-
102A
3 / 6
Technical information in this document are subject to change. Drawings serve illustration purposes only.
Siemens is not responsible for content and any manual modifications.
2019-02-21
A6V10662238_en--_c_--_07
Description of
functions
Basic function Options
∂ 2 x coordination of supply and demand signals for
chilled water
o Setpoint determination for cooling request
o Free cooling
o Disable chilled water sequence based on outside
temperature
o Condensation prevention using local condensation
monitors in the rooms
o Centrale valve kick control
o Central override of all cooling valves
∂ 2 x coordination of supply and demand signals for hot
water
o Setpoint determination for heating request
o Disable hot water sequence based on outside
temperature
o Centrale valve kick control
o Central override of all heating valves
∂ 1 x coordination of supply and demand signals for air
o Activate supply air supply by a minimum number of
rooms with fresh air demand
o Supply air temperature selection
o Relief function for stable operation of air handling
unit
o
Central override of all VAV
∂ 4 central groups for controlling room operating mode
via one digital input.
It can be switched between 2 room operating modes
per group.
∂
Room operating mode control can be enabled for each
group on 3 additional groups with a delay on large
buildings.
∂ 2 central groups of manual operation of blinds via
KNX PL-Link switch.
∂ Manual blinds operation can be enabled for each
group on 3 additional groups with a delay on large
buildings.
∂ 2 central groups of manual operation of blinds via
KNX PL-Link switch.
∂ VAV position selection for AirOptiControl by damper
position, air flow deviation, or setpoint evaluation of air
flow.
Variants
∂
The room operating modes can be commanded on the
DXR2 via a BACnet reference.
Siemens devices Key Device Datasheet Product no. No.
DXR2… Compact room automation station, BACnet/IP, 24 V,
DIN housing, 2 DI, 4 UI, 8 DO Triacs, 4 AO 0…10 V
N9205
N9207
DXR2.E18-101A
DXR2.E18-102A
DXR2.M18-101A
DXR2.M18-102A
1
Optional third-
party device
Key Device No.
R3 I/O pushbutton interface UP 220/31
2)
5WG1 220-2AB31
1
R4 I/O pushbutton interface UP 220/31
2)
5WG1 220-2AB31
1
D3, D4,
D5, D6
Digital contact to control room operating mode
4
2)
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