User Manual

Application Sheet VAV082
Supply and extract VAV with KNX PL-Link VAV controller, heating
and cooling coil and hot water radiator on triac output
DXR2..18-
102A
2 / 8
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_--_02
Description
of functions
Basic functions Options
∂ PID control for supply VAV, temperature and air
quality.
∂ The temperature and air quality (CO
2
) is measured in
the room operator unit.
∂ The application allows customers to adjust the room
temperature setpoints and rapid ventilation via the
room operator unit.
∂ Display of room air quality on room unit.
∂ The operating modes are Comfort, Pre-Comfort,
Economy and Protection.
∂ The air flow for heating and cooling is operated in
sequence to the valves. Parallel operation can be
configured.
∂ Supply VAV actuator on KNX PL-Link.
∂ Extract VAV actuator on KNX PL-Link.
∂ PID control for LTHW radiator heating.
∂ Heating and cooling coils with 3-position valves
controlled by triac outputs.
∂ Downdraft compensation.
∂ Outside temperature (for downdraft compensation)
distributed over BACnet.
∂ Optimal energy efficiency by including the option for
room/supply air cascade control, presence detector or
window contact.
∂
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
∂ Rapid ventilation.
∂
Air volume flow tracking for positive and negative room
air pressure.
∂ Air supply functions to coordinate demand signals for
pressure optimized fan control.
∂ Green Leaf (RoomOptiControl) function.
∂ Multisegment use of DXR2 automation stations with
VAV application.
∂ 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.
∂ Room operator unit and sensor variants:
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, 24 V,
DIN housing, 2 DI, 4 UI, 8 DO triacs, 4 AO 0…10 V
N9205
N9207
DXR2.E18-102A
DXR2.M18-102A
1
R1 KNX PL-Link room operator unit with sensors for
temperature, humidity, CO
2
, segmented backlit display,
touchkeys
N1602 QMX3.P74 1
YS VAV compact controller KNX PL-Link, AC 24 V, 5 Nm,
150 s, 300 Pa
N3547 GDB181.1E/KN 1