EDM SYSCW AR R513A (EDM CWAR 02 S 1GB/12.21)
SYSCW-AR R513A
4
Control Features
All SYSCW-AR R513A water source heat pumps are, in their
standard version, equipped with a Siemens electronic control
system which manages their operation and their safety devices.
RCS remote control
A RCS remote control is supplied as optional (factory tted or wall
mounted).
It enables individually controlled operation or stand‑alone
regulation.
The RCS remote control is ergonomically designed and discreet. It
comprises a digital display and essential functions such as :
On/Off,
Selection of operating mode,
Room temperature display,
Fan speed selection,
Temperature set‑point adjustment
Alarm code display
Master/slaves control : the standard version of the Siemens
electronic control enables operation in master/slaves regulation
mode for up to 15 water source heat pumps using a single RCS
remote control.
This conguration enables the installer to save on the purchase
and wiring of equipment such as auxiliary relays and multi‑wire
cables between the various water source heat pumps. Only a bus
cable with 2 twisted pairs is necessary between the master and
slave units.
Anti-freeze safety function : this is provided by two temperature
sensors. In cooling mode an "ICT" temperature sensor located
in the nned coil protects the water source heat pump against
accidental freezing.
In heating mode, the safety function is provided by an "LWT"
minimum water outlet temperature sensor.
The automatic reset LP pressure switch completes the anti‑freeze
safety function by monitoring a minimum acceptable suction
pressure to ensure correct operation of the compressor.
High temperature safety function : the "ICT & LWT" temperature
sensors check that the condensation temperature at the nned coil
and the water temperature at the outlet of the water/refrigerant
heat exchanger do not exceed the authorised limits.
The automatic reset HP pressure switch completes the high
temperature safety function.
The Siemens regulation exists with the following communication
protocols:
² Modbus RTU
² Bacnet MSTP
² LON