Xtra large for flexible controlling of complex solar thermal systems with up to 4 storages

• Attractive housing (H 228mm W 180mm D 53mm) with various installation possibilities
• High-contrast, white illuminated large display with extensive full-text and graphic mode
• Self-explanatory operation via 4 softkey entry keys

Connections:

• 8 sensor inputs for Pt1000 temperature sensors
• 2 sensor inputs for Grundfos VFS sensors for heat metering (flow and temperature measurement), alternatively pressure monitoring via Grundfos RPS sensor
• Sensor expansion jack for 3 additional sensors
• 2 outputs 0..10V or PWM signal for control of high efficiency pumps, large pumps and frequency converters
• 2 switching outputs for speed control of standard pumps
• 4 relay outputs mechanical 230VAC
• 1 relay output potential free
• Micro SD Memory Card Slot
• Ethernet connection (optional)
• Digital connection / bus system

There are 48 basic systems selectable which can be extended easily and flexibly by activating diverse additional functions via the unassigned relays.

Basic systems:

• Solar with storage
• Solar with heat exchanger
• Solar with swimming pool
• Solar with swimming pool and heat exchanger
• Solar with 2 collector surfaces and switching valve
• Solar with 2 collector surfaces, switching valve and heat exchanger
• Solar with 2 collector surfaces and 2 pumps
• Solar with 2 storages and switching valve
• Solar with two-zone storage and switching valve
• Solar with 2 storages and 2 pumps
• Solar with 2 storages and 2 stop valves
• Solar with 2 storages, 2 pumps and heat exchanger
• Solar with 2 storages, 2 stop valves and heat exchanger
• Solar with two-zone storage and stop valve
• Solar with storage, swimming pool and heat exchanger
• Solar with two-zone storage, switching valve and heat exchanger
• Solar with 2 collector surfaces, 2 storages, 2 pumps and switching valve
• Solar with 2 collector surfaces, two-zone storage, 2 pumps and switching valve
• Solar with 2 storages, switching valve and heat exchanger
• Solar with 2 collector surfaces, 2 storages and 2 switching valves
• Solar with 3 storages and 2 switching valves
• Solar with 3 storages and 3 pumps
• Solar with 3 storages and 3 stop valves
• Solar with 3 storages, 3 pumps and heat exchanger
• Solar with 3 storages, 3 stop valves and heat exchanger
• Solar with three-zone storage, 3 stop valves and heat exchanger
• Solar with 2 storages, switching valve and swimming pool with heat exchanger
• Solar with 2 storages, 3 stop valves and swimming pool with heat exchanger
• Solar with two-zone storage, switching valve, heat exchanger and pool with heat exchanger
• Solar with two-zone storage, 2 stop valves, heat exchanger and pool with heat exchanger
• Solar with 2 collector surfaces and 3 storages with 2 switching valves
• Solar with 2 collector surfaces, 3 storages with 2 switching valves and heat exchanger
• Solar with 4 storages and 4 pumps
• Solar with 4 storages and 4 stop valves
• Solar with 4 storages, 4 pumps and heat exchanger
• Solar with 4 storages, 4 stop valves and heat exchanger
• Solar with four-zone storage and 4 stop valves
• Solar with 2 collector surfaces, 4 storages, 2 pumps and 3 switching valves
• Solar with 2 collector surfaces, 4 storages, 2 pumps, 3 switching valves and heat exchanger

Additional functions for unassigned relays:

Solar bypass Backup heating control Cooling function Return flow increase Anti-legionella function Storage transfer Universal DeltaT Always On

Solid fuel boiler control Signalling with activated protection function Signalling with new information message Pressure monitoring Booster for fast system loading Parallel operating with R1 Parallel operating with R2

Accessories:
8 PT1000 temperature sensors, e.g. TT/S2 + TH...
Optionally Grundfos VFS sensor for heat metering
Optionally Grundfos RPS sensor for pressure monitoring