It is supplied complete with mounting strap for rapid and easy installation, so draining of the system or tapping the cylinder is not necessary. Based in the West Midlands, we are an independent plumbers merchant and national distributor of quality Plumbing, Bathroom, Heating and Plastic products.

Some manufacturer's won't take installed units back and they'll alternatively send an engineer out to get the unit fixed or replaced.

The Honeywell L641 is a water temperature thermostat designed for surface mounting on domestic hot water cylinders. Our plumbers merchant sales counter offers a friendly professional service to all visitors both trade and retail. We only sell the highest quality products from the leading brands and manufacturers in the industry. Honeywell Home is a water temperature thermostat designed for surface mounting on domestic hot water cylinders it is supplied complete with mounting strap for rapid and easy installation so draining of the system or tapping the cylinder is not necessary. I have a Honeywell641A connect to a cylinder tank and use in conjunction with an iboost solar system.

Honeywell Cylinder Thermostat is a water temperature thermostat designed for surface mounting on domestic hot water cylinders, it is supplied complete with mounting strap for rapid and easy installation, so draining of the system or tapping the cylinder is not necessary.uk/honeywell-home-l641-cylinder-thermostat-honeywell-12129/ 28504 Honeywell Home L641A Cylinder Thermostat - 240V https://www.