€1200 available from SEAI Better Energy Homes Scheme when you fit a Grant Solar Solution
Duplex stainless steel, unvented, indirect solar twin-coil mains pressure hot water cylinders for renewable applications.
The DuoWave range of mains pressure hot water cylinders for solar panels was developed to meet the growing demand for systems that combine a renewable heat source with a standard oil, gas or electric boiler. They are particularly suitable for use with solar hot water systems like Grant Solar Thermal. When correctly installed this arrangement can significantly reduce the dependence on traditional fossil fuels resulting in lower energy bills.
Sizes range from 200 litres to 500 litres, comprising five indirect models which can meet the needs of even the largest of domestic properties.
The cylinders have two coils for connection to primary heat sources. The solar heat supply should be connected to the bottom coil, which is designed to preheat, or heat the surrounding water, depending on the temperature of the incoming supply. The central heating boiler connections should then be made to the top coil. The boiler will only operate if the water in the hot water cylinder has not reached the desired pre- set temperature and the boiler/cylinder controls are installed and commissioned correctly. Featuring high efficiency corrugated heating coils, the Grant DuoWave range is developed to ensure a maximum transfer of the energy collected by renewable systems, and is perfect for technologies such as solar thermal. Designed for public water/mains supplies only.
Indirect cylinders are heated from a conventional oil, gas or electric boiler, but provided with a second high performance coil which is linked with a renewable heat source, like solar thermal. As a safety feature, indirect cylinders are supplied with a control/high limit thermal cut-out that operates at 90°C.
DuoWave Cylinders include a factory-fitted temperature and pressure relief value, set to operate at 7 bar and 90 deg C, and one 3kW immersion heater.
They are also supplied with an installation kit comprising:
1 x Expansion vessel, hose and bracket
1 x 15mm/22mm Tundish
1 x 3 bar inlet manifold assembly
1 x Installation and user instruction manual
2 x Dual stats
1 x Motorized valve
1 x Drain Cock
All Grant cylinders will operate at minimum Byelaw supply requirements however, the best performance is achieved above 25l/m and 1.5 bar working pressure.
The installation of a Grant Cylinder must be carried out by a competent person in accordance with the current ETCI or IEE Wiring Regulations, Electricity at Work Regulations 1989, relevant Building Regulations. Water Regulations and Bylaws of the local Water Authority. Comprehensive technical information can be found in the installation manual, which is supplied with every cylinder.
Designed to be installed in a vertical position only, the cylinders can stand on any flat surface without special preparation, provided that the flooring is capable of supporting the weight of the fully filled cylinder.
The cylinder/store controls should be wired to the heat source(s) in accordance with chosen control scheme.
All Grant Indirect Cylinders can be used with gas, oil and electric boilers in either open-vented or sealed heating systems. The cylinders themselves can also operate in either open-vented or unvented arrangements. Unvented cylinders must not be used with an uncontrolled heat source as a solid fuel back boiler.
|Weight empty kg||53||63||72||92||108|
|Weight full kg||253||313||372||492||508|
|Solar = 0.73M2||Solar = 1.04M2||Solar = 1.14M2||Solar = 1.56M2||Solar = 2M2|
|Boiler = 0.52M2||Boiler = 0.52M2||Boiler = 0.52M2||Boiler = 0.73M2||Boiler = 1.14M2|
Grant stainless steel and copper cylinders have a full one year component guarantee as well as a 25-year guarantee on the stainless steel cylinder shell and a 5-year guarantee on the copper cylinder shell from the date of purchase. All guarantees are subject to being installed in accordance with the manufacturers instructions and serviced on an annual basis. The warranty will be invalid if a stainless steel cylinder is fitted on a well/bore hole.
It is the responsibility of the customer to determine what water supply source is used for the application.
After sales service
For peace of mind, all Grant Cylinders and Stores are backed by a national network of service engineers.
In the unlikely event of a problem occurring, your installer should telephone our customer service department on (057) 912 0089.