Section Code 1465 : Combination boilers and Water Jacketed Tube heaters. Low volume water content. Heat retained in water heaters will cause expansion of water after closure of draw-off taps and valves. Provision for expansion of water must be made to accommodate excess pressure within the system. Particular care is required where check valves are positioned, or loose jumper valves are thought to be upstream of the heater.
Back To Directory SectionsRange of wall hung, gas fired, combination boilers providing domestic hot water via a plate heat exchanger. The primary circuit incorporates an integral expansion vessel and a pressure relief valve set at 3.0 bar. The product is supplied with a rigid pipe filling loop, followed by a separate isolation valve. The filling loop pipe attaches to the cold water inlet valve which incorporates a double check valve assembly (verified by test, suitable for backflow protection against Fluid Category 3) on the branch to the filling loop. The primary circuit includes an isolation valve on the flow and return and is also supplied with two loose 22mm compression isolation valves and a filter. Maximum working pressure of the primary circuit is 2.5 bar and the maximum supply pressure to the secondary circuit is 10.0 bar. Max operating temperature 65°C.
Range of wall hung, gas fired, combination boilers providing domestic hot water via a plate heat exchanger. The primary circuit incorporates an integral expansion vessel and a pressure relief valve set at 3.0 bar. The product is supplied with a rigid pipe filling loop, followed by a separate isolation valve. The filling loop pipe attaches to the cold water inlet valve which incorporates a double check valve assembly (verified by test, suitable for backflow protection against Fluid Category 3) on the branch to the filling loop. The primary circuit includes an isolation valve on the flow and return and is also supplied with two loose 22mm compression isolation valves and a filter. Maximum working pressure of the primary circuit is 2.5 bar and the maximum supply pressure to the secondary circuit is 10.0 bar. Max operating temperature 65°C.
Range of wall mounted combination boilers providing domestic hot water via a plate heat exchanger and pressurised central heating system. The primary circuit incorporates a pressure relief valve set at 3.0 bar and an expansion vessel. The products are supplied with a temporary filling loop which incorporates a combined isolation valve and double check valve assembly (suitable for backflow protection against Fluid Category 3), stainless steel braided EPDM lined flexible hose assembly and an isolation valve. The secondary circuit (DHW) incorporates a stainless-steel strainer. The primary circuit incorporates isolation valves on the flow and return. Maximum working pressures: DHW: 10.0 Bar CH:2.5 Bar Maximum operating Temperatures: DHW: 65.0°C CH: 85.0°C
Range of wall mounted combination boilers providing domestic hot water via a heat exchanger and pressurised central heating system. The products can be supplied with a rigid or flexible filling loop or keyless filling link. The flexible and rigid filling loops incorporate a flexible hose or copper pipe, isolation valve, double check valve assembly (suitable for back flow protection against fluid category 3). The keyless filling link incorporates a CAB backflow prevention device (suitable for back flow protection against fluid category 3). The products also incorporate an expansion vessel and pressure relief valve set at 3.0 bar. Maximum working pressure of primary circuit 2.5 bar. Maximum operating temperature of primary circuit 85°C Maximum working pressure of secondary circuit 8.0 bar Maximum operating temperature of secondary circuit 60°C
‘SATK 32’ range of indirect heat interface units providing instantaneous hot water. Domestic hot water is provided via a plate heat exchanger and this circuit incorporates a flow detector, stainless-steel filter and water hammer arrestor. The primary/space heating circuit incorporates a pressure relief valve set at 2.5 bar and an expansion vessel. Maximum working pressure of the domestic hot water circuit is 10.0 bar. Maximum working pressure of the primary circuit is 16.0 bar. Maximum working pressure of the space heating circuit is 2.5 bar. Maximum operating temperature 90°C.
Non-metallic materials and components comply with BS6920 at 85°C
Range of wall mounted combination boilers providing domestic hot water via a plate heat exchanger and pressurised central heating system. The primary circuit incorporates a pressure relief valve set at 3.0 bar and an expansion vessel. The secondary circuit (DHW) incorporates a plastic flow restrictor and stainless-steel filter. The primary and secondary circuit incorporates isolation valves on the flow and the primary also has one on the return. Maximum working pressures: Secondary DHW: 10.0 Bar Primary CH: 2.5 Bar Maximum operating temperatures: Secondary DHW: 65.0°C Primary CH: 85.0°C
Page 4 of 4
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.
