Gledhill SESINPIN090 90L ES Indirect Unvented Stainless Steel Hot Water Cylinder

The Gledhill SESINPIN090 is a compact indirect unvented stainless steel hot water cylinder designed for domestic properties with modest hot water needs. It stores approximately 93 litres of water and is heated indirectly by a gas or oil boiler via a high-efficiency corrugated coil, with a 3kW immersion heater providing electric backup.

Suitable for new installations or replacements in smaller homes, flats and apartments, this floor-standing vertical cylinder supplies mains-pressure hot water without requiring a cold water storage tank. Manufactured from highly corrosion-resistant duplex stainless steel with 25-year warranty (subject to registration), it meets BS EN 12897 and carries WRAS, NSF WRC approvals.

Key Features

• Nominal 90L capacity (actual ~93L)
• High-efficiency corrugated primary coil for fast reheat
• 3kW immersion heater with control and cut-out thermostats
• Supplied with external expansion vessel, inlet control group and P&T relief valve
• 40mm insulation for low heat loss
• Maximum inlet pressure 12 bar; PRV set at 3 bar
• Vertical floor-standing orientation
• ErP rating B
• WRAS and NSF WRC approved
• 25-year cylinder warranty (2 years standard, extendable on registration)

Benefits

• ✔ Delivers powerful mains-pressure hot water for showers and baths
• ✔ No loft tank required, saving space and installation cost
• ✔ Corrugated coil provides faster recovery times than plain coils
• ✔ Compact design fits smaller properties and tight spaces
• ✔ Corrosion-resistant duplex stainless steel for long life
• ✔ Includes full unvented kit for straightforward installation
• ✔ Low standing heat loss reduces running costs
• ✔ Suitable for sealed or open-vented boiler systems
• ✔ Backed by Gledhill’s industry-leading support and warranty

Technical Specifications

• MPN: SESINPIN090
• Capacity: 93 litres (nominal 90L)
• Height: 706 mm (+80 mm draw-off)
• Diameter: 530 mm
• Empty weight: 17 kg
• Full weight: 110 kg
• Heat loss: 36 W / 0.87 kWh/24h
• Immersion heater: 3 kW, 240 V AC
• Coil rating: 13.4 kW
• Primary heat exchanger surface area: 0.59 m²
• Material: Duplex stainless steel
• ErP class: B
• Orientation: Vertical floor-standing
• Maximum working pressure: 3 bar
• Manufactured to: BS EN 12897

What’s in the Box?

1 x Gledhill SESINPIN090 ES Indirect 90L unvented cylinder complete with external expansion vessel, 3kW immersion heater, inlet control group (PRV/expansion relief), P&T relief valve, dual thermostat, energy cut-out motorised valve, tundish, 90° elbow, drain valve and literature pack.