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50L Flat Back Water Heater (3kW)

Price: (Inc VAT)
£430.55 (inc VAT) £358.79 (exc VAT)
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Product Description

Great value 50L Flat Back Water Heater made by Mannley Cylinders that enables cold water temperature to meet current regulatory limits.

• Simple to install and maintain.
• Trouble free operation.

Warranty: One-year on site parts and labour.


  • Cistern-type open vented heater (rectangular).
  • 3.0 kW alloy-sheathed element.
  • Dual thermostat.
  • Splash-proof element cover.
  • Left or right hand plumbing and electrical connections as an option.
  • Hot water is stored separately from incoming cold water.
  • Hot water storage vents to cold water cistern.
  • Cistern temperature is maintained within regulatory limits.
  • Heating element is an embedded rod.
  • Thermostat is adjustable from 5ºC to 65ºC.
  • Hot water tank and cold water feed cistern are manufactured from copper sheet with brazed seams.
  • Case is resistant to corrosion made from white powder-coated steel.
  • Insulated with fire-retardant foiled urethane core slab.
  • Safety features include over temperature cut-out and resettable rod type thermostat set at 80°C.
  • Hot water can be supplied to single or multiple outlets.
  • Connects directly to cold water supply.
  • Left or right connection for overflow, water and power available.
  • Compatible with most types of standard tapware.
  • Expansion vessels or relief valves not required.
  • Minimal working parts for issue-free operation.
  • Routine maintenance and safety checks are not necessary.
  • Simple access at the top for servicing cistern ball valve.
  • Simple access at the bottom for replacing heating element.





  • The Flat Back Water Heater should be wall mounted no less than 1m above the highest draw-off point.
  • Please ensure the wall it is being mounted on is strong enough to hold the weight of the heater when at full capacity.
  • The water heater needs to be fastened using the wall mounting bracket and fixing point.
  • A minimum amount of 150mm at the top is required for access to the ball valve in the cistern.
  • A minimum amount of 250mm at the bottom is required for access to the heating element.


  • Cold inlet, left or right hand connection, 15mm BSP.
  • Hot outlet, from base of heater, 22mm compression fitting.
  • Drain connection, supplied and fitted.
  • Overflow, left or right hand connection, 22mm compression fitting.
  • Ball valve is for mains pressure operation, brass body to BS1212-2.
  • To be installed in compliance with water regulations.


  • To be wired to a double pole fused spur, minimum break rating of 13 amps.
  • RCH 100/C should be provided with its own dedicated supply.
  • Installation must comply with current IEE regulations.


Variable temperature water heaters should be set only in strict compliance with regulations governing the temperature of stored and dispensed hot water.

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