gledhill StainlessLite HP180IND, Design, Installation & Servicing Instructions

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Page 7
General Design Considerations
The cupboard footprint needs to be at least
650mm square for units up to 300 litres, 730mm
for 400 litre units.
The base chosen for the cylinder should be level
and capable of supporting the weight of the unit
when full of water as shown in General Data. The
discharge pipework for the safety valves must
have a minimum fall of 1 : 200 from the unit to a
safe discharge point. All exposed pipework should
be insulated and the unit should NOT be fi xed in a
location where the contents could freeze.
The pipe connecting the boiler fl ow to the
appliance must not be less than 22mm copper
or equivalent.
Mains Water Supply
Existing properties with a 15mm supply will be
satisfactory provided the local mains pressure
is good, but should be confined to single
bathroom properties. For new properties where
simultaneous demand is required to more than
one bathroom or a bathroom and one or more
en-suites, the communication and service pipe
into the dwelling should be a minimum of 22mm
(usually in the form of a 25mm MDPE supply).
The minimum recommended static pressure
to operate a Stainless Lite domestic system is 3
bar. There should be a fl ow of at least 30 litres
per minute or above available into the property.
Normally Stainless Lite provides well in excess
of 40 litres/min in most conditions. Flow rates
for ALL mains pressure systems are subject
to district pressures and system dynamic loss.
Particularly on larger properties with more
than one bathroom, the pipe sizes should be
calculated in accordance with BS6700.
I.V.
Combination Valve
I.V.
If two Stainless Lites are coupled together the secondary inlet and outlet pipes must
be balanced. The units must be fi tted on the same level.
Note: No valves must be fi tted between the expansion vessel and the storage
cylinder(s).
INSTALLATION
INSTALLATION