HiQu Digital Concealed
installation instructions
Page 5
Installation of Digital pumped processor (for gravity stored systems)
The HiQu Digital pumped shower system is designed to operate up to maximum static pressure of 100kPa ((1
bar)(10 metres head)(14.5psi)).
Under no circumstances must the pumped processor be connected directly to the water main or in line with another
booster pump.
The minimum actual capacity of the cold water storage cistern should be not less than 225 litres (50 gallons). The
capacity of the hot water cylinder must be capable of meeting anticipated demand.
Installation of Digital standard processor (for balanced high pressure and
unvented systems, combination boiler systems and separately pumped gravity
systems)
Pressures: The HiQu Digital standard shower system is designed to operate up to a maximum static pressure of
700kPa ((7 bar)(100psi)). Where pressures are likely to exceed 700kPa ((7 bar)(100psi)), a pressure reducing valve
must be fitted to the incoming mains supply. A setting of 400kPa ((4 bar)(60psi)) is recommended. It should be
noted that daytime pressures approaching 600kPa ((6 bar)(80psi)) can rise above the stated maximum overnight.
Special notes for combination boiler systems
The appliance must have a minimum domestic hot water rating of 24kW (80,000BTU) and be of the type fitted with
a fully modulating gas valve.
If in any doubt, please contact the appliance manufacturer before installation commences.
PLEASE NOTE: DUE TO PERFORMANCE CHARACTERISTICS OF COMBINATION BOILERS, SEASONAL INLET
TEMPERATURE CHANGE WILL AFFECT THE PROCESSOR OUTLET FLOW RATE RESULTING IN VARYING SHOWER FLOW
RATE AND FLOW CONTROL RANGE. INLET TEMPERATURE CHANGE MAY ALSO CAUSE THE TEMPERATURE LED’S TO
FLASH; THIS IS NOT NECESSARILY CHANGING THE OUTLET TEMPERATURE.
Special notes for separately pumped gravity systems
We recommend a twin ended pump with a MINIMUM pump rating of 1.5 bar. For optimum performance a twin
ended 2.5 bar pump should be used.
The minimum actual capacity of the cold water storage cistern should be not less than 225 litres (50 gallons). The
capacity of the hot water cylinder must be capable of meeting the anticipated demand.
THIS PRODUCT IS NOT SUITABLE FOR USE WITH A SINGLE ENDED PUMP.
Connections
This product incorporates ‘push-fit’ type connections. Tube should be cut using a rotary type cutter and lubricated
using a silicone-based lubricant or petroleum jelly (Vaseline or similar) prior to insertion into the fitting.
If plastic pipe is used, the tube insert must not increase the tube diameter or extend the cut-off length by more than
2mm.
THESE FITTINGS ARE NOT SUITABLE FOR STAINLESS STEEL TUBE.