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 and a water hammer arrestor. The space heating circuit incorporates an expansion vessel and a pressure relief valve (set at 3.0 bar). The product is supplied with a filling loop assembly consisting of an elbow shaped copper pipe, isolation valve and double check valve assembly (suitable for backflow protection against fluid category 3) which incorporates an isolation valve. The cold mains inlet and the domestic hot water outlet each incorporate a brass bodied spherical valve with a butterfly handle. Maximum working pressures and operating temperatures: Primary: 16.0 bar and 90˚C. Domestic hot water (DHW): 10 bar and 65˚C. Secondary (space heating): 2.5 bar and 85˚C.
Copper heat transformer. Maximum working pressure 11.0 bar. Maximum operating temperature 95°C.
Range of domestic hot water units incorporating instantaneous or semi-instantaneous plate heat exchanger assemblies. The product incorporates a motorised control valve, managed primary and secondary pumps (see model), and a drain valve on both circuits. Maximum working pressures: 10.0 bar primary, 9.5 bar secondary. Maximum operating temperatures: 110°C primary, 85°C secondary.
Range of unvented electric storage water heaters consisting of a mild steel, glass/enamel coated tank, heating element and pressure relief valve set at 6.0 bar. Maximum working pressure 5.5 bar. Maximum operating temperature 75°C.
Ranges of wall hung, gas-fired condensing combination boilers providing domestic hot water via a plate heat exchanger and pressurised central heating system incorporating an expansion vessel and pressure relief valve set at 3.0 bar. The supplies to both domestic hot water and primary are controlled via spherical valves. Products are supplied with a rigid filling loop or keyless filling link. Maximum working pressure of the primary circuit is 2.5 bar & maximum supply pressure of the secondary circuit is 8.0 bar. Cold water supply only. Maximum operating temperature 95°C.
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