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Geyserwise Delta T Geyser Controller

This intelligent controller is designed to manage your Hot Water needs to your best advantage from both an energy and economical point of view. It uses professional techniques and the control system is managed by a computer microprocessor. GeyserWise Delta is suitable for installation 220V pumped solar hot water heaters and made up of the following components.

  • Control box: The control box is the brain of the system. It performs all the programmed functions and sends instructions to the pump and the element.
  • Display unit: An array of useful information can be displayed. This includes the temperature of the water in the geyser, the temperature in the collector, whether the pump is running or not, when the element is on, actual hours of electricity used, etc.
  • Water geyser sensor: The water geyser sensor measures the temperature in the geyser and acts as a thermostat. The temperature sensor for the thermostat in the stem-type thermostat is in the last 2cm of the stem. The sensor for the thermal cut-out is in the first centimetre of the stem of the unit.
  • Collector temperature sensor and extension cable: Also referred to as a probe, it senses the temperature in the panel and relays the information to the control box via the extension cable.
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Excl. Tax: R 1,286.09 Incl. Tax: R 1,479.00

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Product Description


Geyserwise Delta T is used as a timer and differential control for 220V pumped Solar Water Heating Systems.

  • Clear display of water temperature, time, day, heating mode and malfunction conditions on solar system and geyser.
  • Auto or manual heating.
  • Easy temperature setting to your requirements (30 - 65°C) factory default is 55°C.
  • Four different temperature settings.
  • Daily programmable timer with four-time settings.
  • Error conditions alert by warning code E2 to E5 and E7 to E9.
  • Electronic thermostat with mechanical thermal cut-out at 90°C. Please note the cut-out temperature for systems expected to
  • reach temperatures above this temperature.
  • Differential controller 220V pumped solar system.

Technical Parameters

  • Operating voltage: 230VAC / 50HZ.
  • Main relay contact rating: 20AMP (Max 4KW).
  • Secondary relays pump: 5Amp.
  • Operating voltage range 160V - 250V AC.
  • Temperature display range 0 - 200°C (“-5” when below -5°C “EA”).
  • High temperature warning above 85°C.
  • Temperature setting ranges 30 - 65°C (heating water electrically).
  • Heat failure - when increase at a rate of less than 4°C per hour.
  • Electronic thermostat with mechanical thermal cut out at 90°C.
  • Dry heat detection - empty cylinder.
  • Temperature tolerance ± 2%.
  • Temperature differential setting 1°C.
  • Switching differential 6°C.
  • 2nd temperature probe for solar.
  • Solar differential setting range 7°C - 15°C.
  • Temperature probe failure detection for both collector and tank.
  • Temperature probe range for geyser is -30 to + 130°C.
  • Temperature probe range for collector is -30 to + 260°C.
  • Isolate L when in off state.
  • Collector antifreeze protection setting range 0 - 10°C.

Additional Information

Additional Information

Disclaimer Please note that stock availability is subject to prior sales. Prices exclude delivery. The image serves as an example of what the product looks like and may differ slightly in appearance.
Guarantee/ Warranty 12 month product warranty
Geyser Litres No
Unions No
Type No
Optional Bag No


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