Frost Protection Raystat V5 Controller

Control unit for frost protection for pipes.


Energy-saving control for frost protection application with alarm to Building Management System (BMS).

LPHW and Cold Water Services - Single Circuit, Single Application Controller: This is a line-sensing and or ambient sensing thermostat for LPHW pipe freeze protection circuits shall be controlled using a programmable, programmable ambient sensing control (PASC) thermostat, complete with adjustable hysteresis, high and low temperature alarm function, digital display, ‘offsite programming’ without external power supply, 25A switching capacity, sensor and voltage failure alarms, selectable fail safe mode (either ON or OFF), alarm relay for remote BMS monitoring and system error codes for quick diagnostic of system failure.

Features and benefits:

  • Display for visual indication of parameters.
  • Two operation modes: Operating mode 1: Proportional ambient sensing control (PASC) for enhanced energy efficiency, Operating mode 2: line sensing control.
  • Maximum and minimum temperature alarm features.
  • Programming possible without connection to the power supply.
  • NTC sensor.
  • Maximum 25 A switching capacity, 230 VAC.
  • Sensor error alarm with programmable protective function in the event of sensor breakage, Sensor short circuit.
  • Alarm relay to the BMS.
  • Keylock.
  • CE marked.


Control unit for frost protection for pipes.

General information


Password protected keylock, USB port for pre-setup in power off mode, easy set-up and programming of the unit, flexible temperature control of pipe freeze protection and temperature maintenance systems, line sensing and/or ambient sensing, proportional Ambient Sensing Control (PASC) algorithm for enhanced energy savings in ambient sensing mode, alarm relay with change over contact to signal power, temperature or communication problems, pipe temperature monitoring with high and low temperature alarm, offsite configurable - can be set up prior to final installation, on wall mountable for outdoor location,






210 x 90 x 85 mm

Uniclass 2015

Pr_75_50_18_26 Electric trace heating control and monitoring panelsPrimary


S90/565 Trace heating tape for pipelines

Specification data - Electric trace heating control and monitoring panels

Product Reference

Frost Protection Raystat V5 Controller


GM-TA-AS NTC-Sensor/ Ambient sensor in enclosure


PT-100 Sensor HARD-78 (–40°C to +150°C)

PT-100-Sensor MONI-PT100-260/2 (–50°C to +260°C)

Sensor Module for PT 100 (up to +250°C) SM-PT100-1

SENSOR-NTC-10M (–40°C to +90°C)

Standard product features


Manufactured in grey and black polycarbonate.

Technical characteristics:

  • Size: 210 x 90 x 85 mm.
  • Supply voltage 230 VAC (–15/+10%); 50 Hz.
  • Power consumption 3.5 VA.
  • Switching capacity output relay: 25 A 230 VAC.
  • Size power supply terminals: 3 x 6 mm² max.
  • Size heating cable terminals: 3 x 6 mm² max.
  • Size alarm terminals: 3 x 1.5 mm² max.
  • Size pipe sensor terminals: 2 x 1.5 mm² max.
  • Alarm relay: Single pole double throw relay, volt-free; Max. switching capacity (resistive load only), 1 A/30 VDC 0.5 A/125 VAC, Max.: 60 VDC/125 VAC.
  • Enclosure material: Polycarbonate.
  • Keylock Password protection for parameter settings.
  • USB Port For pre-setup in power off mode and firmware upgrade.
  • Weight 990 g.
  • Mounting option: On wall; mountable DIN rail 35 mm (included in the package).
  • Cable entries: Two M25 and 1 x M20; Two M20 pre-punched.
  • Flammability class: DIN EN 60730/VDE 0631-1.
  • Temperature sensor: Sensor type NTC 2K Ohm / 25°C 2 wire according to IEC/Class B, sensor head 50 x 6 mm diameter.
  • Sensor cable: Silicone 3 m x 4 mm diameter (Sensor Cable can be extended up to 150 mm when a cross section of 2 x 1.5 mm² is used. The cable exposure temperature is -40 to +90°C (+215°C, 1000 h maximum).

Digital objects
Platform Compatible Version Certified to


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