Hot Water...
Domestic Hot Water - Integrated with central heatingSunFlow Solar Hot Water Systems
Heat Pump Hot Water
Domestic Hot Water - Integrated with central heating
The heat source installed for a central heating system can be integrated with a domestic hot water cylinder. This heat source will offer a cheaper per kilowatt energy cost than conventional electricity rates.
The central heating system is designed to allow the diversion of heated water (from the heat source) to an internal exchange coil in a quality hot water cylinder. The large capacity of most central heating sources means that the cylinder water is heated rapidly and there is no detectable affect on the heated floor system.
Why use a SunFlow® cylinder?
Standard NZ stainless steel cylinders are welded in natural atmosphere, which degrades the stainless steel within the seams and joints. This can lead to premature cylinder failure and as a consequence, many NZ manufactured stainless steel cylinders do not carry a long warranty - typically 2-5 years.
SunFlow® cylinders are imported from the UK where they are welded in a purpose-built vacuum welding plant. The result is that the high stainless steel integrity is retained in the seams and joints. But the best news is that SunFlow® cylinders come with a full 10 year warranty (in the UK they have a 20 year warranty, so the manufacturer has high confidence in their product).
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We supply 250 and 300 litre cylinders with single or twin exchange coils and single or twin 3 kilowatt back-up electric elements. You may use cylinders from other manufacturers but heating system warranties will not apply if the cylinder is deemed to have contributed to any system failure. |
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Specification
Manufactured to MEPS standards
Manufactured in an ISO9001:2000 registered factory
| Outer Casing: | Galvanised Steel |
| Inner Tank: | Duplex 2304 (Grade 1.4362 EN 10088) |
| Insulation: | CFC free polyurethane (MEPS compliant) |
| Coil(s): | 22mm stainless steel (coil in coil design) |
| Pressure Test: | 15 bar |
| Element(s): | Superloy 825 alloy sheathed (2 or 3 kw) |
| Thermostat: | Immersion type (safety cut-out @ 85°C) |
| Solar Control: | Solar probe pocket |
| Temp & Pressure Relief: | Factory set to 90°C & 850 kPa |
| Anode: | not required |
Must be installed by registered plumber in accordance with the Plumbers, Gas Fitters and Drainlayers Act 1976.
SunFlow Solar Hot Water Systems
- SunFlow® Solar Systems employ products from Cap-Aus, a part of the Conergy A.G. Group, Europes leading solar energy company
- High quality materials assure superior performance and a longer operational life - up to 10 years warranty.
- Designed to handle the harshest extremes of weather experienced in Australia and New Zealand
- Performance at the very top end of the market for real energy gain and dollar savings
SunFlow® "Energy Star" solar systems are eligible for a $1,000 grant from EECA
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Thermosiphon SystemsThe 300 litre cylinder is mounted on the roof with the collector panels (extra construction may be required) Closed circuit - natural convection, frost protected system |
Split SystemsRoof collectors are separate from the 300 litre cylinder. Closed circuit - pumped, frost protected system |
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Flat plate collectors
Despite many people's reservations, flat plate collectors are still one of the best collector options available.
- Conergy collectors use completely non-ferrous materials - no rust, long life and very little risk of physical damage.
- Still rank at the very highest performance levels in the Australian Renewable Energy Credit Scheme administered through the University fo New South Wales.
- Fast performance to 80°C and no boiling and spilling of excessively hot water.
- Most installations do not require a lift frame like tubular systems, where the installation angle is critical.
- No maintenance required or checks for cracked tubes etc
SP Collectors - blue sputter selective absorber (Titanium oxynitride), high transfer efficency in high sunlight areas, iron toughened glass.
BC Collectors - copper plate with black chrome absorber surface - superior performance in cloudier areas to capture direct and indirect radiation, iron toughened glass.
Retro-fitting Solar Hot Water Systems
A key factor for efficient solar performance is the amount of water storage available (the cylinder capacity). The minimum recommended by the Solar Industries Association (SIA) is 250 litres. Fitting solar systems to older 180 litre cylinders may result in variable and limited results.
Heat Pump Hot Water
Split Systems
ECOHOTWATTER
The EHW35 can deliver more than 4kw of hot water for every 1 kw of electricity due to the use of high efficiency inverter efficiency.
- Direct water flow fits to your existing cylinder
- Operates down to -10°C
- Low operating noise level - just 47 dB
- Fast recovery rate with up to 5.5 kw heat input possible Heat Pump Air Conditioning Ltd - go to www.hpac.net.nz
External Cylinder / Heat Pump Combination
Quantum eco hot water heat pumps offer an alternative to solar systems for providing lower-cost domestic water heating.
These units are installed externally to your home, coming in 270 or 340 litre models.
- Around 60 - 65% annual operating savings on convential electric water heating
- Up to 75% greenhouse emissions reduction
The Quantum eco hot water heat pumps can provide from 600 to 1600 litres of hot water per day depending on conditions.
Very high water use may result in a 3-6 hour delay to reheating - similar to a standard 3 kw electric element. Full recovery will occur overnight.
Cold rated to -10°C - positioning should be carefully considered with regard to closeness to water service points in the home, nearness of bedroom windows and neighbours, and of course the likelihood of continued cold air flow
