VA20-NO, with actuator normally open
Compact size
Modern design
Insulated actuator housing
Simple manual control for commissioning or emergency operation
Universal electrical connection by integrated relay (240VAC).
Control via an on-off contact.
Limit switch signal output can be used for control purposes (max. 1 A)
Position of the ball valve is visible via an indicator flag (white)
The actuator can be replaced quickly without demounting of the valve
No flow restriction
Battery-operated mini digital thermometer
with connected measuring sensor for universal application
Module
Type: Pt1000, model FRP22
Working range: -20…+90 ºC
Sensor end: ∅ 6 x 45 mm
Cable: 2.5 m / PVC insulation
Including: mounting material
Sensor
Quick access to the manual mode by means of the slide switch
For all optional functions of the DeltaSol® MX, DeltaSol® BX Plus, DeltaSol® SLT and the DeltaTherm® HC/HC MAX
Easy connection via VBus®
Selection and configuration of the functions on the controller
14 relay outputs and 12 inputs for Pt1000, Pt500 or KTY temperature sensorsUp to 5 extension modules via RESOL VBus® (45 sensors and 39 relays in total)
Inputs for analogue and digital Grundfos Direct Sensors™ as well as for FRH and FRHd humidity sensors
Integrated control of up to 4 high-efficiency pumps via PWM outputs
Data logging, storing, easy transfer of controller adjustments prepared and firmware updates via SD card
Cooling over the heating circuit with condensation detection by means of a dew point switch
Dew point calculation by means of the FRH(d) humidity sensor to avoid condensation
Simplified timer, 0-10 V boiler control and DHW preheating
