Product Description

Gledhill Stainless ES 300L Indirect Unvented Cylinder – SESINPIN300

Please note: We can only deliver this cylinder to mainland England addresses.

The Gledhill Stainless ES 300L Indirect Unvented Cylinder stores hot water for larger homes and properties with high hot water needs. It has a nominal size of 300 litres and an actual capacity of around 295 litres.

This indirect cylinder uses an internal heating coil to transfer heat from a boiler to the stored water. In addition, the supplied 3kW immersion heater provides an electric backup. Therefore, the cylinder suits larger homes with a boiler-fed central heating system.

Gledhill makes the cylinder from strong Duplex stainless steel. This material helps protect it against rust and corrosion. Also, 40mm insulation helps keep the stored water hot and reduces heat loss.

As an unvented cylinder, this model takes its water supply directly from the mains. As a result, it can provide good flow and pressure at showers, baths and taps without a separate boost pump. However, the property must have suitable mains water flow and pressure.

Gledhill ES 300L Indirect Cylinder Features

• Gledhill Stainless ES indirect unvented cylinder
• Manufacturer model number: SESINPIN300
• Nominal size: 300 litres
• Actual capacity: around 295 litres
• Suitable for boiler-fed central heating systems
• Internal heating coil transfers heat from the boiler
• Includes one 3kW immersion heater for electric backup
• Suitable for larger homes with high hot water needs
• Strong Duplex stainless steel construction
• 40mm insulation helps reduce heat loss
• Supplies mains-pressure hot water
• Can support good flow rates at showers and baths
• No cold water storage tank required
• No separate boost pump normally required
• Space-saving 530mm diameter
• Maximum inlet pressure: 12 bar
• Pressure-reducing valve setting: 3 bar
• Maximum working pressure: 6 bar
• 25-year cylinder warranty, subject to Gledhill’s terms

Cylinder Size

• Height: 1895mm
• Diameter: 530mm

Before you order, check the full height and width available for the cylinder, valves and pipework. Also, allow enough room for delivery, installation, future checks and servicing. Your installer should confirm all measurements against the latest Gledhill technical guide.

What Comes with the Cylinder?

• 1 x 3kW immersion heater
• 1 x expansion vessel
• 1 x temperature and pressure relief valve
• 1 x 3 bar inlet control group

These parts help your installer complete a safe and correct unvented hot water system. However, the installer may need extra controls, valves, pipework and fittings to suit the property and boiler.

Where Can You Use a 300L Indirect Unvented Cylinder?

The Gledhill ES 300L indirect cylinder may suit larger family homes and properties with high hot water needs. For example, it may suit a home with several people, more than one bathroom or many hot water outlets.

Because this is an indirect cylinder, a boiler heats the stored water through the internal coil. Meanwhile, the 3kW immersion heater provides another way to heat the water if required.

However, every home uses hot water differently. The correct cylinder size will depend on the number of people, bathrooms, showers, baths and taps in the property. Therefore, always ask a qualified installer to check the required cylinder size before you buy.

Why Choose a Gledhill Stainless ES Cylinder?

Gledhill is a well-known UK hot water cylinder maker. Its Stainless ES range offers a good mix of value, strength and simple operation.

First, the Duplex stainless steel body gives the cylinder strong protection against corrosion. Next, the 40mm insulation helps keep the stored water hot. Finally, the unvented design can provide better hot water pressure than a basic gravity-fed system.

The Gledhill ES 300L cylinder also comes with key safety parts. As a result, your installer can source the main cylinder and its main controls in one package.

Why Buy from SNH Tradecentre?

• Competitive prices: We aim to offer great value across the Gledhill Stainless ES range.
• Helpful advice: Our team can help you compare cylinder sizes, models and types.
• Genuine Gledhill products: Buy with confidence from an established plumbing and heating merchant.
• Direct delivery: We can arrange delivery to eligible mainland England addresses.
• Support when you need it: Contact us if you need help with the product or delivery.
• Trusted independent merchant: SNH Tradecentre supplies homeowners, landlords, plumbers and heating engineers.

Not sure if this Gledhill 300L indirect unvented cylinder is right for your property? Contact SNH Tradecentre before placing your order. Our team can help you compare direct and indirect Gledhill cylinders.

Installation Requirements

A trained and qualified person must install and commission this unvented cylinder. The installer must also have the correct skills to work on unvented hot water systems.

The installation must meet Section G3 of the Building Regulations in England and Wales. In addition, installers must follow the rules that apply in Scotland and Northern Ireland. They must also follow the latest Gledhill installation guide and all local requirements.

Installation Guides and Product Information

• Download the Gledhill Stainless ES installation guide
• Download the Gledhill Stainless ES brochure
• Read our Gledhill Stainless ES cylinder buying guide
• View the Gledhill Stainless ES range

Frequently Asked Questions

Is the Gledhill ES 300L cylinder direct or indirect?

This model is an indirect unvented cylinder. A boiler heats the stored water through an internal coil. In addition, the supplied 3kW immersion heater offers electric backup.

What is the actual capacity of this cylinder?

Gledhill lists this model as a 300-litre cylinder. However, its actual capacity is around 295 litres.

What is the difference between a direct and indirect cylinder?

A direct cylinder uses immersion heaters as its main heat source. In contrast, an indirect cylinder uses a boiler and an internal coil to heat the water. It may also include an immersion heater for backup.

Can it supply mains-pressure hot water?

Yes. The cylinder takes its water supply from the mains. Therefore, it can provide good pressure at taps and showers when the property has suitable mains flow and pressure.

Does the Gledhill ES 300L include an immersion heater?

Yes. The package includes one 3kW immersion heater, which can provide electric backup for the hot water system.

Does it need a cold water storage tank?

No. An unvented cylinder takes its water directly from the mains. Therefore, it does not need a traditional cold water storage tank in the loft.

Does an unvented cylinder need a shower pump?

Usually, it does not need a separate shower pump because it uses the mains water supply. However, the available flow and pressure will depend on the property’s incoming water supply. Your installer should test this before fitting the cylinder.

Is a 300L indirect cylinder suitable for my home?

A 300-litre cylinder may suit a larger family home or a property with high hot water use. However, your installer should check the number of people, bathrooms and hot water outlets before recommending a size.

Who can install this unvented cylinder?

A qualified installer with the correct unvented hot water skills must carry out the work. They must also follow current Building Regulations and Gledhill’s latest instructions.

Where can SNH Tradecentre deliver this cylinder?

We can deliver this item to mainland England addresses only. Please contact SNH Tradecentre if you want us to check your postcode before you order.

Gledhill may change the product details from time to time. Therefore, check the latest technical guide before you buy or install this cylinder.