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Gledhill Boilermate BP

Indirect Mains Pressure Hot Water System to suit either sealed or open vented systems 

The smart alternative

Mains pressure hot water without the dangers of an unvented cylinder

Understand a Boilermate - Click here for more

Mains pressure hot water from an open vented thermal store

Whilst highly desirable, mains pressure hot water has historically brought with it the dangers associated with unvented (pressurised) cylinders - EXPLOSION! Until the advent of the Boilermate that is!

With the simple yet clever addition of a mains-pressure heat exchanger a normal gravity pressure open-vented vessel can be transformed to provide mains pressure hot water with performance to match any other system.

This is basically the principle the Boilermate employs. High performance mains pressure hot water without any of the baggage unvented systems bring with them - G3 Building Regs, Specialist Installers, Risk of explosion, pressure relief issues and pipework etc.

Boilermate has been around for quite some time. The system has been widely used throughout the UK within the 'new-build' market and by discerning householders how have recognised the superior performance and advantages of the system over others - previous generations include Boilermate 2000 and Boilermate A Class ranges.

Boilermate BP

If you are looking to upgrade your system (which can be done with consummate ease) or you wish to replace an earlier version with the new Boilermate BP you might like to call our office to learn more.

As a replacement

For those wishing to replace earlier versions of the Boilermate and Systemate please be advised that the new BP model differs internally. Earlier models contained various components (pumps, circuit boards, timers etc) that must now be added externally. This actually makes the new unit much easier for the uninitiated to understand and has reduced the cost of the Boilermate substantially. Please click here for more detailed info or call for advice.

Low cost installation/maintenance
Easy to install BoilerMate BP can be fitted to existing systems, including the existing boiler and controls, where appropriate. Unlike unvented cylinders, BoilerMate BP does not require expensive safety controls or the need to plumb temperature and pressure relief pipework to outside. External expansion vessels are not required and wiring is the same as any traditional Y, S or W plan system. BoilerMate BP thermal stores do not require any annual maintenance.

The BoilerMate BP is supplied without any system kit, which can be purchased as optional extras or be provided by the installer. The base unit is suitable for either open vented or sealed heating systems with the appropriate system kit.

BS6700: 1997 states that with unvented cylinders, the “maintenance and periodic easing of temperature relief valves is particularly important”. This is a landlord’s responsibility in tenanted properties and annual checks must be carried out by a CITB trained person or installer, having G3 approval. As BoilerMate BP is vented and therefore inherently safe, there is no requirement for a safety discharge, and it is not subject to Building Control Regulations – thus simplifying installation and system maintenance enormously for the landlords or homeowners.

BoilerMate BP for use with gas or oil boilers and renewable energy

BoilerMate BP is a mains pressure vented hot water thermal store suitable for open vented and sealed heating systems. The unit can be fitted with a conventional ‘S’ plan, ‘Y’ plan or a control system of your choice, and the controls can be plumbed inside the appliance giving a clean finish within the airing cupboard.
• Header tank can be sited remotely
• Insulated in high performance metal cased foam

How the BoilerMate BP works

The BoilerMate BP thermal storage system is supplied with primary water from the boiler which heats the store via a primary coil. Secondary water flows directly from the cold mains into a secondary coil where it is heated by the store before being delivered to the taps.

Below are a couple of typical configuration schematics for the Boilermate BP model.

Parts supplied with both unit types: Feed and expansion cistern. Cistern ball valve & float. Thermostatic blending valve. Mini expansion vessel

Factory fitted options: In-line scale inhibitor if you are installing in a hard water area, Electrical Immersion Heater as a back-up heat source in case of boiler failure.

Optional extras or supplied by installer for OV units: Pump with isolating valves. 3-port flow share valve. Bypass valve. Manual air vent.

Optional extras or supplied by installer for SP units: Pump with isolating valves. 3-port flow share valve. Bypass valve. Manual air vent. Pressure relief valve. CH expansion vessel. System filling kit including hose and pressure gauge.

Boilermate BP technical information

Notes:
1. The appliance is supplied on a 100mm high installation base and comes complete with a separate top up cistern. This can be installed with or without an overflow/warning pipe as required.
2. An allowance for the top up cistern and the 100mm installation base are both included in the minimum cupboard dimensions.

Please Note: Where the mains water hardness exceeds 200ppm provision should be made to treat the feed water to reduce the rate of accumulation of lime scale. The optional factory fitted in-line scale inhibitor should be specified at the time of order for hardness levels between 200 and 300 ppm (mg/l). Where the water is very hard ie 300ppm (mg/l) and above the optional polyphosphate type scale inhibitor should be specified at the time of order.

Cold and hot water distribution design – all models
BoilerMate BP models are designed to be fed directly from the mains. They fulfil the requirements of Water Regulations and therefore do not require a check valve to be fitted to the supply pipe. The performance of the BoilerMate BP is directly related to the adequacy of the cold supply to the dwelling. This must be capable of providing for those services which could be required simultaneously and the maximum demand should be calculated. BoilerMate BP will operate at dynamic pressures as low as 1.5 bar (at the appliance) which must be available when local demand is at its maximum, but the preferred range is between 2 and 3.5 bar. As a general guideline, although a 15mm external service may be sufficient for the smaller dwelling with one bathroom, a 22mm service is preferred (25mm MDPE) and should be the minimum for larger dwellings.

Water treatment
The Domestic Heating Compliance Guide published in May 2006 requires a water treatment device to be fitted where the hardness is greater than 200ppm. Full details are given in the Design & Installation manual supplied with all BoilerMate BP units.

Boilermate BP - Sizes and Prices

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