A direct-electric water cylinder. Designed and developed in-house, the Quantum cylinder is the ideal partner to the Quantum space heater for a complete heating and hot water system, or as a standalone hot water system for the electrically heated home.

Features and benefits:

  • Unvented cylinder provides high flow rates for efficient hot water delivery ideal for powerful showers and fast-filling baths.
  • Fully compatible with all tap fittings.
  • Best suited somewhere discreet and closed off, such as an airing cupboard.
  • Light and easy to handle for simple installation.
  • Surface mounted thermostats and sensors for easy installation and maintenance/replacement.
  • Supplied complete with inlet safety group and external expansion vessel.
  • All connections accessible from the front.
  • Slimline models are ideal for smaller spaces.
  • Pipework routing optimises internal stratification, thereby maximizing hot water availability.
  • Side hot water draw off connection, minimizes heat losses through the top of the cylinder.
  • 60 mm of injected polyurethane foam insulation exceeds CHeSS best practice standards for low heat loss and heat recovery. Global Warming Potential: 1 and Ozone Depletion Potential: 0.
  • Completely void free, including insulation around immersions and thermostats.
  • Recessed immersion heaters and thermostat housings reduces heat loss.
  • Anti-Legionella: Guaranteed self-sterilisation of the cylinder, whilst keeping set temperatures lower during normal operation to help reduce running costs.

Warranty: Parts and labour guarantee on the cylinder vessel for 25-years and two years on other components.

General information

Uniclass 2015

Pr_60_50_20_21 Direct hot water storage cylindersPrimary


S90/37 Direct hot water storage cylinders

S90/370 Direct hot water storage cylinders

Specification data - Direct hot water storage cylinders

Product Reference


Standard product features

Size (w x h):

480 x 1761 mm.

Colour/ Finish:


Technical characteristics:

  • Weight: 30 kg.
  • Construction: Duplex stainless steel LDX2101/ HIPS.
  • Controls: Electronic thermostatic control and integrated thermal cut out.
  • Insulation: 60 mm PU foam.
  • Reheat time: 200 minutes.
  • Tank capacity: 180 litres.
  • Efficiency: 35.1 %.
  • Heat loss: 1.68kW/ 24 hours.
  • Potable water temperature: 70°C.
  • Sensor type: Surface mounted.


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