Frost Protection Raystat V5 Controller

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.

Technical characteristics:

• 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 V d.c. 0.5 A/125 V a.c., Max.: 60 V d.c./125 V a.c..
• 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).

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 V a.c..
• Sensor error alarm with programmable protective function in the event of sensor breakage, Sensor short circuit.
• Alarm relay to the BMS.
• Keylock.
• CE marked.