Gledhill PLUIN400 400L StainlessLite Plus Indirect Unvented Hot Water Cylinder

The Gledhill PLUIN400 is a 400 litre (393L actual) StainlessLite Plus Indirect unvented hot water cylinder designed for use with conventional gas or oil boilers and electric immersion backup. It delivers high-flow mains-pressure hot water to multiple bathrooms and showers without a pump, making it perfect for new-build or replacement installs in larger domestic properties.

Manufactured from high-specification duplex stainless steel with 50mm HCFC-free insulation, the cylinder features a high-efficiency corrugated coil for rapid reheat times and comes complete with a factory-fitted temperature and pressure relief valve. The 400L model includes two 3kW Incoloy immersion heaters (on-peak and off-peak) plus a secondary return connection.

Key Features

• 393 litre capacity suitable for properties with up to 3 bathrooms and 3 shower rooms
• High-efficiency corrugated coil for faster recovery than plain-tube designs
• Two 3kW Incoloy immersion heaters for emergency and off-peak backup
• 25-year manufacturer warranty
• Secondary return connection fitted as standard
• Factory-set T&P relief valve at 6 bar / 95°C
• 90° elbow, flexihose and drain valve supplied
• ErP rating C with low standing heat loss

Benefits

• ✔ Provides powerful mains-pressure hot water to multiple outlets simultaneously
• ✔ Rapid reheat via corrugated coil maximises boiler efficiency
• ✔ Dual immersion heaters ensure hot water availability even if the boiler is off
• ✔ Corrosion-resistant duplex stainless steel construction for long service life
• ✔ Excellent insulation minimises heat loss and running costs
• ✔ Secondary return supports circulation loops for instant hot water
• ✔ Full WRAS and NSF approvals for compliance and safety
• ✔ Supplied with all essential fittings for straightforward installation

Technical Specifications

• MPN: PLUIN400
• Capacity: 393 litres
• Height: 2030 mm
• Diameter: 630 mm
• Weight (empty): 55 kg
• Weight (full): 455 kg
• ErP Rating: C
• Number of Immersions: 2 (3 kW each)
• Secondary Return: Yes
• Max Inlet Pressure: 12 bar

What’s in the Box?

1 x Gledhill StainlessLite Plus Indirect 400L Unvented Cylinder (PLUIN400) complete with 2 x 3kW Incoloy immersion heaters, T&P relief valve, 90° elbow, flexihose, drain valve and fittings.