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Electrical Supply requirements for BoilerMate
A-Class
SITE
REQUIREMENT
S
INSTALLATION
The appliance is designed to be installed in an airing/cylinder cupboard and the
relevant minimum dimensions are provided in the Technical Data section.
Because of the ease of installation we recommend that the cupboard construction
is completed and painted before installation of the appliance. The cupboard door
can be fitted after installation.
If the unit needs to be stored prior to installation it should be stored upright in a dry
environment and on a level base/floor.
Installation and maintenance access is needed to the front of the appliance and above
the F & E cistern. See the Technical Data section for further details.
The minimum dimensions contained in the Technical Data section allow for the
passage/connection of pipes under the appliance from any direction as long as the
appliance is installed on the installation base provided. If the installation base is not
used extra space may be needed to allow connection to the pipework and the whole
of the base area should be continuously supported on a material which will not easily
deteriorate if exposed to moisture.
The floor of the cupboard needs to be level and even and capable of supporting the
weight of the appliance when full. Details of the weight when full is provided in the
Technical Data section.
The appliance is designed to operate as quietly as practicable. However, some noise
(from pumps etc) is inevitable in any heating system. This will be most noticeable in
cupboards formed on bulkheads, or at the mid span of a suspended floor. In these
cases the situation can be improved by placing the appliance on a suitable sound
deadening material (i.e. carpet underlay or similar).
Cupboard temperatures will normally be higher than in a conventional system and the
design of the cupboard and door will need to take this into account. No ventilation
is normally required to the cupboard.
A suitable location will be needed for the separate feed and expansion cistern. This
will often be at high level in the cupboard housing the BoilerMate A-Class. The
dimensions and clearances are provided in the Technical Data section. The location
will need to provide a suitable route for the cold feed and expansion pipe as well as
the open safety vent pipe. The location will also need to provide a suitable route
and discharge position for the warning/overflow pipe and the ballvalve supply from
the mains cold water system.
An electrical supply must be available which is
correctly earthed, polarized and in accordance
with the latest edition of the IEE requirements
for electrical Installations BS 7671.
The electrical mains supply needs to be
230V/50Hz.
A means for disconnection from the supply
mains having a contact separation in all
poles that provides full disconnection under
over voltage category III conditions must be
incorporated in the fixed wiring in accordance
with the wiring rules. This shall be located
within 1m of the appliance and only serve the
appliance.
The minimum breaking capacity of the main
isolator cable sizes/lengths at 230V shall follow
the recommendations in the table shown
opposite.
If the boiler incorporates a frost thermostat an
extra 3 core 3 amp supply cable will be required
between the boiler and the BoilerMate to
provide a supply to the boiler pump - see the
Electrical Connection section for further details.
Nominal full
load current
Min rating of
the isolator
Cable size
Fuse Size
1.5 Amps
13 Amp Fuse Spur
1 mm
2
5A
Summary of Contents for BMAS 150 OVR
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Page 40: ...Page 40 APPENDIX D NOTES ...
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