Data Sheet for Application

Application Sheet
HP001
Heat pump, variable fan, reversing valve, 2-stage electric heating,
1-stage electric radiator and outside air damper
DXR2..18-102A
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.
2021-09-08
A6V10662238_en--_c_--_11
Function diagrams
Air flow with 2-stage electric reheater
DmpOa
Outside air damper
Q8
Variable speed heat pump
Fan
Fan
Rad
Radiator
FanSpdMaxC
Max. fan speed cooling
SpC
Effective cooling setpoint
FanSpdMaxH
Max. fan speed heating
SpH
Effective heating setpoint
FanSpdMinC
Min. fan speed cooling
TR
Room temperature
FanSpdMinH
Min. fan speed heating
YOa
Outside air damper
HclEl
Electric heating coil
YR
Electric reheater, 2-stage
Hpu
Heat pump
YRa
Electric radiator, 1-stage
Q1
Variable speed fan
YRV
Reversing valve heat pump
Description
of functions
Basic functions
Options
• PID control for heating and cooling.
• 3-position valves are controlled by triac outputs for
heating and 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 or central command.
• The air flow for heating and cooling is operated in
sequence to the valves. Parallel operation can be
configured.
• 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
heat pump unit 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.
• 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
• Presence can be detected by KNX PL-Link sensor or
binary sensor.