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Extra large Temperatue Difference Controller

Starting at: £361.88 ex VAT
£434.26 inc VAT

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  • Model: XTDC


Extra large Temperature Difference Controller for flexible controlling of complex solar thermal systems with up to 4 storages. There are 39 basic systems selectable which can be extended easily and flexibly by activating diverse additional functions via the unassigned relays.
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.
  • 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

XTDC Technical features:
Temperature sensors Pt1000 8
Relay outputs 230V*
    of which for speed control of standard pumps
Outputs 0..10V or PWM signal 2
VFS/RPS sensors 1-2
Number of applications 40+
LEDs red/green for display of operating status 2
Simple heat metering Yes
Flow based heat metering (Grundfos VFS sensor) 1-2
Pressure monitoring (Grundfos RPS sensor) Yes
Time and temperature-controlled thermostat function Yes
Battery-backed Real Time Clock Yes
Legionella protection via solar Yes
Legionella protection via additional heating Yes
Cooling function Yes
Setup wizard Yes
System protection Yes
Collector protection Yes
Storage protection Yes
Anti-freeze programs Yes
Recooling Yes
Start logic for vacuum tube collectors Yes
Control program for self-dumping systems (drain-back) Yes
Data storage with statistics and graphic analysis Yes
Error memory and analysis with date and time Yes
Menu blocker Yes
Ethernet connection (via data logger) Yes

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