Gainsborough e50 Installation Manual - page 5
5
Isolating valves
A suitable full bore isolation valve must be fitted to the incoming supply in accordance with the current water supply regulations and
our terms of warranty. The isolation valve must be sited in an accessible location for service and maintenance purposes.
Siting
The unit must be mounted on a flat, vertical finished wall with the hose pointing downwards. Any distortion of the back plate may
result in the unit not working.
DO NOT tile up to or use sealants around the unit. The shower is spaced off the wall by integral pillars to allow air circulation around
the unit.
The casing must not be sited where it is subject to continuous spray from the shower head.
The unit must not be sited where it is likely to freeze.
The rail system must be sited in a position where the hose when connected to the shower unit is not stretched or kinked.
WARNING: DO NOT SWITCH THE SHOWER ON IF THERE IS A POSSIBILITY THAT THE SHOWER COULD BE FROZEN. IF YOU HAVE
SWITCHED THE SHOWER ON, SWITCH OFF IMMEDIATELY (Please refer to the troubleshooting guide page 17).
Pressures
Check that the supplied dynamic (running) water pressure to the electric shower is adequate.
The required supplied dynamic (running) pressure is:-
Maximum 1.0MPa (10 Bar)
Minimum 0.07MPa (0.7 Bar) at a flow rate of 8 litres per minute.
Where pressures are likely to exceed 1.0MPa (10 bar), a pressure reducing valve must be fitted to the incoming mains supply.
A setting of 0.3MPa (3 bar) is recommended. It should be noted that daytime pressures approaching 8 bar can rise above the stated
maximum.
The use of other services connected to the same water supply as the shower unit may cause the water pressure to drop below the
minimum required. This should therefore be taken into consideration.The minimum pressure/flow rate provided by your water
supplier may be below the requirements of this product. Contact your water provider for more details. Note: The running pressure at
your shower can be lower than this due to pressure losses in the internal pipe work in your home.
Note: Models of electric showers can differ in performance; if your previous electric shower had a lower output flow rate, then
this may have produced a higher dynamic pressure at the shower head.
Flushing
Some modern fluxes can be extremely corrosive and, if left in contact, will attack the working parts of this unit. All soldering must be
completed and the pipe work thoroughly flushed out in accordance with current Water Supply Regulations prior to connection of the
product
.
Pressure relief device (PRD)
To meet European standards, the shower unit features an integral pressure relief device (PRD). The PRD provides a degree of shower
unit protection should an excessive build up of pressure occur within the shower.
DO NOT operate the shower with a damaged or kinked hose or blocked shower head, as this can cause excessive water temperature
and/or the PRD to operate. Failure to follow this instruction will invalidate the product guarantee.
The outlet must not be connected to any tap or fitting, including water saving handsets and flow restrictors, other than those
specified as the shower will only function correctly with the hose and handset provided (see showerhead installation instructions
from page 12). The use of alternative shower heads and/or hoses can cause excessive, potentially scalding, water temperature
and/or the PRD to operate and will invalidate the product guarantee.
Please fully commission the shower prior to use following the instructions on page 14. Failure to do this could cause the PRD to
operate and will invalidate the guarantee.
The shower must be sited over a bath or shower tray as in the event of the PRD operating water will drain from the bottom of the
shower unit.
E50 instructions :Layout 1 18/11/14 10:41 Page 5