User Manual

Application Sheet CBA002
Active chilled beam with variable fan, cooling coil and hot water
radiator on triac output
DXR2..09T-101A
2 / 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
A6V10662233_en--_b_--_10
Description
of functions
Basic functions Options
∂ PID control for cooling.
∂ 3-position valves are controlled by triac outputs for
cooling.
∂ The fan is controlled manual on the room operator unit
or automatic with variable speed.
∂ The temperature is measured in the room operator
unit.
∂ The application allows customers to adjust the room
temperature setpoints via the room operator unit.
∂ The operating modes are Comfort, Pre-Comfort,
Economy and Protection.
∂ Change of operating mode via room unit, presence
detector, window contact or central command.
∂ The air flow for heating and cooling is operated in
sequence to the valves. Parallel operation can be
configured.
∂ Optimal energy efficiency by including the option for
room/supply air cascade control, presence detector or
window contact.
∂ Optional radiator.
∂ PID control for LTHW radiator heating.
∂
Optional system alarms displayed on the management
station notify building operators of possible faults.
∂ Optional trends can be activated for room sensors.
Auxiliary functions Variants
∂ Green Leaf (RoomOptiControl) function.
∂ Multisegment use of DXR2 automation stations with
fan coil unit application.
∂ Standard hot and cold water supply chain control.
∂ The application allows for control via centralized
commands (e.g. scheduler program
for room operating
mode).
∂ Central optimum start control provides best room
comfort at the start of occupancy.
∂ Central operation or reset of setpoints, timed valve
kick function or outside temperature dependent
heating limit.
∂ Central override functions for valves.
∂ Seasonal compensation of room temperature
setpoints.
∂ PWM constant (incl. spring return) or PWM thermal
control can be selected for valves.
∂ The room temperature can be measured by:
o KNX PL-Link wall-mount sensor
o KNX PL-Link flush-mount room operator unit
o KNX PL-Link flush-mount sensors
o Analog extract air temperature sensor
∂ Presence can be detected by KNX PL-Link sensor or
binary sensor.
Siemens devices Legend Type of unit Data sheet Product No. Qty.
DXR2… Compact room automation station, BACnet/IP, 230 V,
flat housing, 1 DI, 2 UI, 1 DO relay, 4 DO triacs,
1 AO 0…10 V
N9204
N9206
DXR2.E09T-101A
DXR2.M09T-101A
1
R1 KNX PL-Link room operator unit with temperature
sensor, segmented backlit display, touchkeys
N1602 QMX3.P34 1
YC 2-port, 3-port valve or 3-port valves with bypass, PN16 N4847 V..P47.. 1
Motorized 3-positioning actuator for V..P47.., AC 24 V N4864 SSP81.. 1
Optional
1)
Legend Type of unit Data sheet Product No. Qty.
B1 Cable temperature sensor PVC 2 m, LG-Ni1000 N1831 QAP22 1
B3 Cable temperature sensor PVC 2 m, LG-Ni1000 N1831 QAP22 1
D1 Door/window contact, white
2)
S 290/11
3)
D2 KNX PL-Link presence detector
2)
UP 258D12 1 - 4
YR 2-port, 3-port valve or 3-port valves with bypass, PN16 N4847 V..P47.. 1
Motorized 3-positioning actuator for V..P47.., AC 24 V N4864 SSP81.. 1
1)
Can be combined according to available on-board I/Os on controller.
2)
Further documents on www.siemens.com/gamma-td.
3)
Type of operation (NO or NC). Multiple devices of the same type can be connected.