Electronically controlled heat interface units (HIU) with twin stainless-steel plate heat exchangers providing space heating and instantaneous hot water. The cold inlet supply to the plate heat exchanger incorporates an isolation valve. The space heating circuit incorporates an expansion vessel and a pressure relief valve (set at 3.0 bar). The inlet and outlet of all circuits incorporates lever operated spherical valves with brass bodies. 274.xx9x.696 models all have the following additional items over the 274.xx1x.696 models: Heatmeter on the primary circuit, a flushing bypass between the primary and space heating circuits and a safety relief valve (set at 10.0 bar) on the cold supply to the heat exchanger of the domestic hot water circuit. Maximum working pressures and operating temperatures: Primary: 16.0 bar and 90˚C. Domestic hot water (DHW): 9.5 bar and 60˚C. Secondary (space heating): 2.5 bar and 85˚C.
Range of water meters with plastic bodies and EPDM ‘O’-rings. The inlets incorporate a plastic strainer. Maximum working pressure 10.0 bar. Cold water use only.
Plastic bodied flow sensor. Maximum working pressure 10.0 bar. Maximum operating temperature 85°C.
Air break to drain, incorporating brass bodies with a grey epoxy powder coating. Maximum operating temperature 60°C.
Impeller with plastic body for insertion into specifically dimensioned bores. Maximum operating temperature 70°C.
Page 15 of 2334
We use cookies to give you the best possible experience with WRAS. Some are essential to provide website functions and ensure the website is secure. We also use cookies to help us understand how people use the site and to make improvements. Click "Accept All" to enable recommended settings or click "Manage cookies" to adjust your settings. For more details, see our Cookie Policy.
