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Grant ThermaWave Thermal Stores

25 Year guarantee*

Grant ThermaWave Thermal Stores

Thermal stores allow multiple heat sources to be connected in a number of different ways, with immersion heater(s) back-up.

This makes it possible to have a gas or oil fired boiler connected to a solid fuel appliance and also a renewable heat source such as solar thermal or a heat pump. Furthermore, underfloor heating system manifolds as well as radiator circuits can also be directly connected to the store.

Features & benefits

  • Ozone depletion potential (ODP) = 0 and Global warming potential (GWP) = less than 3
  • ThermaWave DHW stores have been designed for situations where there is a greater demand for domestic hot water.
  • The addition of the DHW coil means there is no need to link the store to an additional cylinder, resulting in a more cost effective and compact installation.
  • A sealed system kit is available to complement existing sealed system products e.g. oil or biomass boiler. Please note, uncontrolled heat sources like solid fuel log burners, must not be used with a sealed system thermal store or unvented cylinder.
  • Grant ThermaWave cylinders feature compression fittings which are conveniently located to make installation quicker and easier. (22mm and 28mm)
  • High specification 1mm thick stainless steel and 40mm injected polyurethane foam insulation
  • Multi-level temperature distribution
  • Labelled and colour-coded tappings
  • Immersion heater and no anode required
Why choose Wave cylinders?

Why choose Wave cylinders?

Wave cylinders and thermal stores have been developed to the highest specification, as you would expect from any Grant product. The cylinders have powerful mains-pressure performance with exceptionally high hot water flow rates, while the thermal stores have been specifically designed to enable complementary technologies to be easily combined.

The Wave range of cylinders and stores have sizes ranging between 125 and 500 litres, and are designed to be coupled with almost any household hot water system from oil and gas boilers to electric heating, air source heat pumps and even solar thermal.

Specification

Product code
Model
Weight Empty
Weight Full
Height
Width
Depth
Efficiency
NOx Emissions
Energy Rating
Energy Label
Product Fiche
GTHERM/250 Grant ThermaWave open-vented stainless steel 250 litre thermal store 55kg 305kg 1400mm 580mm 580mm - - c Heating View View
GTHERM/300 Grant ThermaWave open-vented stainless steel 300 litre thermal store 61kg 361kg 1690mm 580mm 580mm - - c Heating View View
GTHERM/400 Grant ThermaWave open-vented stainless steel 400 litre thermal store 74kg 474kg 2100mm 580mm 580mm - - c Heating View View
GTHERM300HW Grant ThermaWave open-vented stainless steel 300 litre thermal store c/w hot water coil 65kg 365kg 1690mm 555mm 555mm - - c Heating View View
GTHERM300HWU Grant ThermaWave sealed system stainless steel 300 litre thermal store c/w hot water coil 65kg 365kg 1690mm 555mm 555mm - - c Heating View View
GTHERM400HW Grant ThermaWave open-vented stainless steel 400 litre thermal store c/w hot water coil 80kg 480kg 1640mm 660mm 660mm - - c Heating View View
GTHERM400HWU Grant ThermaWave sealed system stainless steel 400 litre thermal store c/w hot water coil 80kg 480kg 1640mm 660mm 660mm - - c Heating View View

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