Section 4 - Installation
INSTALLATION
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Installation and Maintenance
4.2.2 Lifting and Handling
The HP290 DHW Cylinder must be handled with care
and stored the correct way up in a dry place. Any manual
handling/lifting operations will need to comply with the
requirements of the Manual Handling Operations Regulations
issued by the H.S.E. The appliance is supplied attached to
a small pallet, and can be move around on smooth level
appliance can be moved using a sack truck on the rear face
although care should be taken and the route should be even.
In apartment buildings containing a number of storeys we
would recommend that the appliances are moved vertically in
a mechanical lift. If it is proposed to use a crane, expert advice
should be obtained regarding the need for slings, lifting beams etc.
4.2.3 Hydronic Connections
4.2.3.1 Performance Recommendations
10 metres above the Pressure Reducing Valve.
In larger properties with a number of bathrooms/en-suites
and long pipe runs we would recommend that the balanced
cold supply is provided with its own pressure reducing valve
and is not taken from the balanced cold connection on the
combination valve. In this case it will also be necessary to
system to accommodate the pressure rise caused by the
increase in temperature of the balanced cold water. Check the
to prevent splashing.
4.2.3.2 Shower Fitting Guidance
Any type of shower mixing valve can be used as long as both
the hot and cold supplies are mains fed. However, all mains
pressure systems are subject to dynamic changes particularly
when other hot and cold taps/showers are opened and closed,
which will cause changes in the water temperature at mixed
water outlets such as showers.
For this reason and because these are now no more
expensive than a manual shower we strongly recommend the
use of thermostatic showers with this appliance. These must
be used in 3 storey properties where the impact on pressure/
temperature of opening another tap in the system is greater
than normal. The shower head provided must also be suitable
for mains pressure supplies.
4.2.3.3 Pipe Layout
In all mains pressure installations it is important to remember
that the incoming cold supply must be shared between all
the bath. If there are two baths, 28mm pipework should be
outlets so as to balance the water available. In any event the
distribution pipework should generally be in accordance with
BS EN 806-1 to 5.
4.2.3.4 Plastic Pipework
This appliance is suitable for use with plastic pipework as
long as the material is recommended for the purpose by the
manufacturer and is installed fully in accordance with their
recommendations.
4.2.3.5 Secondary Hot Water Circulation
be necessary. A non-return valve MUST be FITTED near
installed between the non return valve and the cylinder.
All pipes kept hot by the secondary circulation MUST be
insulated.
Any secondary circulation pump must be installed with
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