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1.0 DESIGN
1.3 SYSTEM DETAILS
Space Heating System Design
General
Warning: Accolade
hot water storage appliance and therefore
it is not suitable for use with a solid fuel
boiler,steam or any other uncontrolled heat
source.
Model selection
All models are designed to be installed with any
condensing or non condensing gas or oil fired
boiler which has a controlled heat source and
is fitted with an overheat thermostat.
The heating system design and installation
must comply with the requirements of BS
6798 and BS 5449.
Although general model selection guidance
is given in table 2.1 (section 1.2), it is
recommended that the hot water demand
should be determined before selecting the
correct model.
Plastic pipework
All recommendations with regard to pipework
systems in this manual are generally based on
the use of BS/EN Standard copper pipework
and fittings. However plastic pipework can
be used in place of copper internally as long
as it is recommended by the manufacturer
and installed fully in accordance with their
recommendations.Barrier type plastic pipework
should always be used for these systems.
It is important to ensure that if the system
is to be installed using plastic pipework it is
designed and sized for plastic pipework.This is
particularly important in relation to use of push
fit connections to the appliance.
Boiler Sizing
The Accolade
A-CLASS
in a 'flow share' mode i.e. the boiler may
supply space heating and hot water demands
simultaneously.Therefore a hot water allowance
should be included when sizing the boiler and
heating system in accordance with BS 5449.
Page 15
A-CLASS
is an unvented
is designed to operate
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