5
4 INSTALLATION
IMPORTANT PRE- INSTALLATION POINTS
In order to ensure the successful
installation and operation of your Gabarron
boiler, please consider the following points
before commencing
.
SITING THE BOILER
WARNING
Wall and fixings must b
e
suitable
to support the total weight; MATTIRA MAC
boiler when full is
125 kg.
Allow sufficient clearance and access for operating,
maintenance and repair work.
Boiler must be protected from any water, moisture or
dampness.
Where installations are in a bathroom, the installation
must comply with the relevant electrical regulations.
Boiler electrical protection rating is IP20/IP2X. This
boiler is not designed to be installed in the open air.
The boiler must be installed in the upright position.
ELECTRICAL POWER SUPPLY & WIRING
WARNING
Before carrying out any work
inside the boiler and obtaining access to
terminals, all supply circuits must be
disconnected.
WARNING
Earth the appliance. If the
appliance is not earthed, it may hold voltage if
a defect occurs.
Competency for electrical installation is required.
The power supply must meet the capacity for the heat
output required plus all other appliance that may be
supplied.
The cable, MCB and RCD must be of sufficient
capacity to carry the required load.
Boiler is supplied set at maximum output and
must be adjusted to suit the incoming supply
before being switched on. (See 5.2 LIMITING
BOILER MAXIMUM OUTPUT).
HEATING SYSTEM & CONTROLS
Any existing system must be suitable for sealed system
operation at up to 3bar pressure and will require
flushing/cleansing in accordance with the Building
Regulations.
Any new heating system must be flushed and cleansed
in accordance with the Building Regulations.
A combi filling loop, isolation valves and drain point
are required.
A time clock/room thermostat should be installed
(Necessary to activate automatic power modulation).
A bypass circuit (min 2m recommended) incorporating
an automatic bypass valve must be installed on all
central heating systems where TRV's are fitted to
every radiator.
Note - A bypass circuit incorporating an
automatic bypass valve is recommended for all
installations.
The correct heat requirement for the dwelling should
be calculated.
HOT WATER SYSTEM
Competency to install unvented hot water systems is
required and must be in accordance with section G3
of the Building Regulations (England & Wales),
Technical Standard P3 (Scotland) and Building
Regulation P5 (Northern Ireland). Compliance can be
achieved via a Competent Person Self Certification
Scheme or by notification of installation to the Local
Authority Building Control Department.
Manufacturer’s notes must not be taken as over-riding
statutory obligations.
Any existing system and controls (e.g. shower) must
be suitable to operate at mains water pressure.
The incoming water main pressure and flow must be
sufficient for requirements.
In all installations the group combination inlet valve
(supplied), which incorporates a pressure reducer
must be installed on the cold water mains supply to
the boiler. The boiler safety valves require piping to a
safe discharge point as per the Building Regulations.
In hard water areas it is mandatory to protect the
boiler against lime scale formation.
4.1 GENERAL REQUIREMENTS
The installation should be carried out by a person
certified as competent for the installation of unvented
hot water systems in accordance with current building
regulations.
Installation should also be in accordance with the
relevant British Standards and Codes of Practice
including the following:
BS 5449 Forced circulation hot water systems
BS 5546 Installation of hot water supplies for domestic
purposes
BS 6700 Design, installation, testing and maintenance
of services supplying water
BS7074 Application, selection and installation of
expansion vessels and ancillary equipment for
sealed water systems.
BS 7593 Code of Practice for treatment of water in
heating systems
BS 7671 Requirements for electrical installations, IEE
Wiring Regulations
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