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Siting
For optimum performance, with gravity fed systems the distance between the bottom of the storage cistern and the
shower head should be not less than 1m (when using an adjustable height head). If using a fixed head, the highest
point of the pipe work must be below the underside of the cistern.
Please refer to the typical system layout on page 6.
Pump installation
UNDER NO CIRCUMSTANCES MUST A PUMP BE FITTED DIRECTLY TO THE WATER MAIN
A pump must only be used to boost the pressure from tank fed supplies.
A minimum 1 bar twin ended booster pump is recommended.
ENSURE THE MINIMUM GRAVITY FLOW RATE IS SUFFICIENT TO OPERATE THE PUMP FLOW SWITCHES.
PLEASE REFER TO THE MANUFACTURERS PUMP INSTALLATION GUIDE FOR PUMP INSTALLATION
INFORMATION.
Please refer to the typical system layout on page 6.
Stored water capacities
The minimum capacity of the cold storage cistern should be not less than 225 litres (50 gallons). The capacity of
the hot cylinder must be capable of meeting the anticipated demand.
Combination boiler/multipoint system
Dream products are suitable for use with combination boiler systems. The combination boiler MUST have a
minimum rating of 24kW (80,000 Btu) and be of the type fitted with a fully modulating gas valve. This is sufficient
to operate one outlet at a time.
If in any doubt, please contact the appliance manufacturer before installation commences.
The cold supply can be taken from the nearest convenient mains supply and the hot supply can be taken from the
nearest hot water draw off point. Account must be taken of the pressure drops that will occur when other draw off
points are used while the shower is in use.
Please refer to the typical system layout on page 7.
Balanced high pressure system
The cold water supply must be drawn from the same mains supply as that to the hot water system (down stream of
the cylinder manufacturer’s pressure limiting valve, where supplied) and the hot supply from the nearest convenient
draw off point. Account must be taken of pressure drops that may occur when other draw off points are used while
the shower is in use.
Please refer to the typical system layout on page 7.
Dream installation guide:Dolphin install Guide 18/1/11 09:50 Page 5
