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 SectionsEMAS 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.
Range of wall mounted gas fired combination boilers providing domestic hot water and pressurised central heating via a plate heat exchanger. Maximum working pressure 3.0 bar (primary) and 8.0 bar (secondary). Maximum operating temperature 90°C. Cold water supply only
Range of gas fired instantaneous condensing domestic hot water heaters with integral storage tank. Having a stainless-steel coil and built in circulating pump. Maximum working pressure 11.0 bar. Maximum operating temperature 80°C
Range of wall mounted, gas fired combination boilers providing domestic hot water via a plate heat exchanger and pressurised central heating system. The primary circuit incorporates an expansion vessel and a pressure relief valve set at 3.0 bar. The secondary circuit incorporates a strainer and plastic flow regulator. The boilers are supplied with straight spherical valves. Maximum working pressure of primary circuit is 2.5 bar and of secondary circuit is 10.0 bar. Maximum operating temperature of primary circuit is 85°C and of secondary circuit is 60°C.
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, in line single check valve assembly, (suitable for backflow protection against Fluid Category 2) and and 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 comprising of an in-line double check valve assembly (suitable for backflow protection against Fluid Category 3), which incorporates an isolation valve, a stainless-steel braided EPDM lined flexible hose assembly. The inlet and outlet of all circuits incorporates a lever operated spherical valves with brass bodies. Maximum working pressures and operating temperatures: Primary: 16.0 bar and 90˚C. Domestic hot water (DHW): 10.0 bar and 60˚C. Secondary (space heating): 2.5 bar and 90˚C.
Range 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.
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 plastic flow restrictor The primary circuit incorporates isolation valves on the flow and return. Maximum working pressure of secondary circuit is 6.0 bar. Maximum working pressure of primary circuit is 2.5 bar. Maximum operating temperature 60°C. Cold water supply only.
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, in line single check valve assembly, (suitable for backflow protection against Fluid Category 2) 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 comprising of an in-line double check valve assembly (suitable for backflow protection against Fluid Category 3), which incorporates an isolation valve, a stainless-steel braided EPDM lined flexible hose assembly and an isolation valve. The inlet and outlet of all circuits incorporates lever operated spherical valves with brass bodies. Maximum working pressures and operating temperatures: Primary: 16.0 bar and 90˚C. Domestic hot water (DHW): 10.0 bar and 60˚C. Secondary (space heating): 2.5 bar and 90˚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 and expansion vessel. Primary circuit has a maximum working pressure of 3.5 bar and operating temperature of 85°C. Secondary circuit has a maximum working pressure of 10.0 bar and operating temperature of 60°C.
RINNAI range of wall mounted combination boilers.The unit incorporates a stainless-steel plate heat exchanger pressure relief valve set at 3.0 bar and an expansion vessel on the primary circuit. Maximum working pressure of primary circuit is 2.5 bar and secondary circuit is 10.0 bar. 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 on the primary circuit. The inlet of the replenishing valve between the primary and secondary circuits incorporate a plastic strainer. Maximum working pressure 2.5 bar (primary) and 6.0 bar (secondary). Maximum operating temperature 85˚C.
LCB700 range of internal and external oil-fired condensing combination boilers providing domestic hot water and pressurised central heating via a plate heat exchanger. 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 primary (space heating) circuit incorporates an expansion vessel and a pressure relief valve (set at 3.0 bar). Operating parameters: Primary (space heating) circuit: Maximum working pressure 2.5 Bar. Maximum operating temperature 105°C. Secondary (DHW) circuit: Maximum working pressure 10.0 Bar. Maximum operating temperature 85°C.
Range of heat interface units (HIU) with either twin or single stainless steel copper brazed plate heat exchangers (depending on model) providing heating and hot water (twin unit) hot water only, or heating only. The hot water is generated via a plate heat exchanger. The primary (space heating) circuit incorporates an expansion vessel and a pressure relief valve (set at 3.0 bar). The product incorporates a CAb backflow prevention device (suitable for backflow protection against Fluid Category 3) for filling the heating circuit. The inlet and outlet of all circuits incorporate a lever operated spherical valve. Maximum working pressures and operating temperatures: Primary (district heating): 10.0 bar and 85˚C. Domestic hot water (DHW): 10.0 bar and 60˚C. Secondary (space heating): 2.5 bar and 80˚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.
Range of wall hung, gas-fired condensing combination boilers providing domestic hot water via a plate heat exchanger. The pressurised central heating system incorporates 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. The primary circuit has a maximum working pressure of 2.5 bar. The secondary circuit has maximum working pressure of 10.0 bar. Maximum supply temperature is 60°C. Maximum operating temperature of secondary circuit is 85°C.
Range of floor standing gas fired combination boilers providing domestic hot water via a stainless-steel plate heat exchanger. Unit is supplied with a safety relief valve (8.0 bar). Maximum working pressure 7.5 bar. Maximum operating temperature 85°C.
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