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Domestic · Heat pump cylinder

Heat Geek Super Cylinder

A high-performance heat pump cylinder designed by Heat Geek and manufactured by World Heat: a stainless steel unvented hot water cylinder with a large corrugated stainless steel coil for heat pumps and other low-temperature heat sources. Sizes from 150 to 300 litres.

  • Designed by Heat Geek, manufactured by World Heat
  • 150–300 L standard sizes
  • Heat pump coil 4 m²
  • ErP class B–C
  • Made in our UK factory

Technical data

Specifications

Heat Geek Super Cylinder
Heat Geek Super Cylinder
Capacity (litres)150180210250300
Product code150HEATGEEKSLIM180HEATGEEKSLIM210HEATGEEKSLIM250HEATGEEK300HEATGEEK
Height (mm)1,4741,6902,0031,7182,031
Diameter (mm)475475475550550
Empty (kg)4348586570
Heat pump coil (m²)44444
3 kW immersion11111
Secondary returnYesYesYesYesYes
Heat loss (kWh/24h)1.281.381.852.102.29
ErPBBCCC
Packaged dimensions H × W × D (mm)1550 x 475 x 4751750 x 475 x 4752100 x 475 x 4751920 x 600 x 6002230 x 600 x 600
Packaged weight (kg)6065707580
Expansion vessel12L12L18L18L24L
Pressure reducing / relief valve3.0 bar / 6.0 bar3.0 bar / 6.0 bar3.0 bar / 6.0 bar3.0 bar / 6.0 bar3.0 bar / 6.0 bar
T&P valve7.0 bar / 90 °C7.0 bar / 90 °C7.0 bar / 90 °C7.0 bar / 90 °C7.0 bar / 90 °C
Insulation thickness50 mm50 mm50 mm50 mm50 mm
Expansion vessel charge pressure3.0 bar3.0 bar3.0 bar3.0 bar3.0 bar
Maximum working pressurePrimary 3.0 bar, secondary 6.0 barPrimary 3.0 bar, secondary 6.0 barPrimary 3.0 bar, secondary 6.0 barPrimary 3.0 bar, secondary 6.0 barPrimary 3.0 bar, secondary 6.0 bar
Test pressure10.5 bar10.5 bar10.5 bar10.5 bar10.5 bar
Actual stored-water capacity (litres)146176205244293
ConnectionsSame for every size
  • Cold water inlet: 22 mm compression
  • Hot water draw-off: 22 mm compression
  • Primary coil stubs (×2): 28 mm plain stub (80 mm)
  • Secondary return: 22 mm compression
  • T&P relief valve boss: ½" BSP female
  • Drain valve boss: ½" BSP female
  • Thermostat pockets: 22 mm dry pocket
  • Immersion heater boss: 1¾" BSP female
Coils (area and duty)Same for every size
4.0 m² heat pump coil: 2.2 kW per K of temperature difference between coil and stored water at 30 L/min primary flow
Valves suppliedSame for every size
  • 3 kW Incoloy 1¾" BSP immersion heater with thermostat and manual-reset thermal cut-out
  • 4.0 m² MH 211 K DN32 corrugated stainless steel coil
  • Cold water inlet control group: pressure reducing valve (set to 3.0 bar), line strainer, non-return valve, expansion relief valve (6.0 bar) and balanced cold connection
  • Temperature and pressure (T&P) relief valve, 7.0 bar / 90 °C
  • Potable water expansion vessel, pre-charged to 3.0 bar
  • Tundish (15 mm inlet, 22 mm outlet)
  • Drain valve (½" BSP with hose union)
  • 22 mm compression fittings on the cold inlet, hot draw-off and secondary return
Product information sheet (PDF) (opens in a new tab)

Figures are from our current product data; each range’s product information sheet is linked under its table. Connection positions are confirmed on the drawing for each order. Other sizes and configurations are built to order.

Must be installed by a qualified unvented (G3) installer and registered with building control.

In detail

About Heat Geek Super Cylinder

The Heat Geek Super Cylinder is a high-performance heat pump cylinder designed by Heat Geek and manufactured by World Heat in our UK factory. Its large corrugated stainless steel coil suits the low flow temperatures of heat pumps, as well as boilers and other heat sources. Every model comes with its unvented kit, listed in the specification above and in the installer manual.

See the rest of our heat pump cylinders.

Need this tailored to your project or system?

Different connections, coil, size, controls or finish: our design team builds to your requirements.
We also build own-brand ranges for OEM partners.

Need a cylinder built to your specification?

From 10 litres to 10,000 litres, our Manchester team designs, manufactures and tests every vessel in-house. We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.

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