Description
The ENVY Heat Pump Cylinder range combines a clean, modern appearance with outstanding heat‑loss performance. Each unit is supplied complete with a factory‑fitted T&P valve, immersion heater for thermal disinfection, dual thermostat with control and high‑limit protection, and a full G3 kit.
ENVY has spent years engineering and refining these cylinders to integrate seamlessly with almost all heat pump systems. Much of this development was carried out in partnership with leading heat pump manufacturers to ensure optimal compatibility and performance. The heat exchanger coils offer significantly greater surface area than standard cylinders and are designed for low resistance, high capacity and maximum temperature drop. Their placement within the cylinder is carefully engineered to deliver the fastest and most efficient heat‑up times from heat pump inputs.
Coil outputs are rated using typical heat pump flow temperatures and flow rates. For installations requiring even higher flow rates, the HPL (single‑coil) and HPSL (twin‑coil) models provide further reductions in 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 guarantee on the cylinder body provides long‑term confidence for both installers and specifiers. Every unit is manufactured in the UK.
Also supplied:
-
Control and high‑limit thermostat
-
1 × 2‑port motorised valve*
-
1 × 3 kW immersion heater
-
Tundish
-
Installation manual
*Motorised valve supplied with twin‑coil models only. Components guaranteed for 2 years.
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 – 215 Ltr
- Size – 575mm (Dia) x 1485mm (Hgt)
- Heat Pump Coil Area Sq Mtr – 3
- HP Coil kW Rating – 40
- Ex Vessel Capacity – 18 Ltr
- Heat Loss Watts / Class – 58 / B
- Weight (empty) – 54kg
- 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
