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Installat
ion and User Instructions R
01127
-
2 06
/11
Page 10
Pre
-
Installation
- location in relation to remaining
system components such as
auxiliary and solar heating system
- frost protection
The direct electric and indirect
cylinder ranges are designed to be
floor standing, vertically mounted,
indoors and in a frost free
environment. The cylinder may be
located on any flat and level surface,
provided it is sufficiently robust to
support the weight of the cylinder
when full of water (please see
technical data) and suitably accessible
for replacement/maintenance without
specialist tools or lifting equipment as
this will void the warranty conditions.
The position and orientation of the
cylinder should be such that easy
access is provided for servicing the
controls. A minimum distance of
400mm in front of the immersion is
recommended, to allow the
replacement of the immersion heater
should the need arise. When installing
the cylinder all labels should be clearly
visible and ensure that no pipework
hinders any work to be carried out on
the various cylinder components.
Particular care must be taken when
placing the cylinder in a garage or
outbuilding. All exposed pipe work
must be correctly insulated to avoid
frost damage.
4.3 Cold water supply
For satisfactory and safe performance
of the unvented cylinder the water
supply must meet the following
criteria:
Minimum dynamic
pressure
150 kPa
(1.5 bar)
Maximum inlet supply
pressure
1200 kPa
(12 bar)
Minimum flow rate 15 l/min
Max. chlorine content 250mg/L
Max. water hardness 200mg/L
The following instructions have to be
followed when installing the cold
water mains supply to the cylinder:
- The cold water supply to the
cylinder must come directly from
the cold water mains after the
mains stop valve to the property.
- The cold water inlet pipe work
should have at least an inside
diameter of 19mm and should meet
the requirements of the water
regulations for the supply of
wholesome water.
4.4 Building regulation G3
Discharge
requirements
As part of the requirements of
Building Regulation G3 any discharge
from an unvented system should be
conveyed to where it is visible, but
will not cause danger to persons in or
about the building. The tundish and
the discharge pipes should be fitted in
accordance with the requirements of
Building Regulation approved
document G3, (England and Wales),
Part P of Northern Ireland and
Standard 4.9 of Scotland.
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