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 mounted combination boilers providing domestic hot water via a heat exchanger and pressurised central heating system.Incorporating a pressure relief valve set at 3.0 bar and an expansion vessel. Maximum working pressure of 2.5 bar (primary) & 7.0 bar (secondary). Cold supply only. Maximum operating temperature 60°C.
Range of wall mounted combination boilers providing domestic hot water via a plate heat exchanger and pressurised central heating system, incorporating a pressure relief valve set at 3.0 bar and expansion vessel. The domestic cold water inlet incorporate a ½” BSP(M) brass body spherical valve. Maximum working pressure of 2.5 bar (primary) and 10.0 bar (secondary). Maximum operating outlet temperature (DHW) 85°C. Maximum inlet temperature (DHW) 60°C
Viessmann range of combination boilers with instant hot water and central heating system with a plate heat exchanger. The unit incorporates a pressure relief valve set at 3.0 bar and an expansion vessel on the central heating circuit. The secondary circuit (DHW) consists of a flow restrictor and a copper filling loop. Maximum working pressure 2.5 bar (primary) and 10.0 bar (secondary). Maximum operating temperature 85°C
GLOWWORM range of combination boilers with instant hot water, and central heating system with a stainless steel plate heat exchanger. The unit incorporates a pressure relief valve set at 3.0 bar and an expansion vessel on the central heating circuit. The secondary circuit (DHW) consists of a strainer. Maximum working pressure: Heating Circuit 3.0 bar. Domestic Hot Water Circuit 10.0 bar Maximum working temperature: Heating Circuit 75˚C. Domestic Hot Water Circuit 55˚C
PREMIX range of combination boilers with instant hot water and central heating system with a stainless-steel plate heat exchanger. Hot water is produced via heat from a centralised heating system (not supplied). The unit incorporates a pressure relief valve set at 3.0 bar and an expansion vessel on the central heating circuit. The inlet and outlet of the primary and secondary circuits fitted with isolation valves. Maximum working pressure: primary circuit 2.5 bar & secondary circuit 10.0 bar. Maximum operating temperature: primary circuit 70˚C & secondary circuit 50˚C.
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