Description
The ENVY Heat Pump Cylinder range combines a modern, attractive design with exceptional heat‑loss performance. Each cylinder is supplied complete with a factory‑fitted T&P valve, a 3 kW immersion heater for thermal disinfection, a dual thermostat with control and high‑limit protection, and a full G3 kit.
ENVY has spent many years developing and refining this cylinder range to ensure seamless compatibility with the vast majority of heat pumps. Much of this work has been carried out in collaboration with leading heat pump manufacturers to achieve the optimal integration of technologies. The heat‑exchange coils offer significantly greater surface area than standard cylinders and are engineered for low resistance, high capacity and maximum temperature drop. Their placement within the tank is carefully designed to deliver the fastest and most efficient heat‑up performance from heat pump inputs.
Coil outputs are rated using typical heat pump flow temperatures and flow rates. For systems requiring higher flow rates, the HPL (single‑coil) and HPSL (twin‑coil) models provide even lower hydraulic resistance. All cylinders are supplied with a full G3 kit and comply with Part L and Part G of the Building Regulations. A 25‑year cylinder guarantee provides long‑term confidence in the product’s engineering and UK manufacturing quality.
Supplied with:
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Control and high‑limit thermostat
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1 × 2‑port motorised valve*
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1 × 3 kW immersion heater
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Tundish
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Installation manual
All units are manufactured in the UK and meet current building regulations. Cylinder bodies carry a 25‑year guarantee (components 2 years). \*Motorised valve supplied with twin‑coil models only.
Features and Benefits
- Stainless steel mains pressure cylinders 25 years guarantee
- Enhanced surface area coils designed specifically for heat pumps
- Exceeds part L of Building Regulations minimum heat loss
- Safety kit provided meets Part G of the Building Regulations
- 3 bar operation high flow rates for fast bath filling and power showers
- A store of mains pressure hot water ready on demand
- Twin coil units available use solar energy for the best of both worlds
- Heat pumps save money and energy
- Commercial sizes available
- Low resistant range available for fast flow.
Specification
- Volume – 150 Ltr
- Size – 575mm (Dia) x 1083mm (Hgt)
- Heat Pump Coil Area Sq Mtr – 2
- HP Coil kW Rating – 28
- Ex Vessel Capacity – 12 Ltr
- Heat Loss Watts / Class – 44 / B
- Weight (empty) – 44kg
- Material – Duplex Stainless Steel
- Operating Pressure Tank & Coil – 3 Bar
- Pressure Reducing Valve – Max Pressure 12 Bar/ Control Pressure 3 Bar
- Expansion Vessel Charge – 3 Bar
- Expansion Relief Valve – 6 Bar
- Hot & Cold Connections – 22mm (28mm • 400 & 500 litre)
- Standard Coil – 28mm
- Low Resistant Coil – 35mm
