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The location selected for the installation of this heater must allow the
provision of a satisfactory fl ue, an adequate, clean air supply, a drain and
be well illuminated. The fl oor on which the heater is located must be level
and of suffi cient strength to withstand the weight of the heater when fi lled
with water and should comply with the requirements of the Local Author-
ity and Building Regulations.
A purpose built plant room or compartment is strongly recommended.
If a purpose built plant room is not available, measures should be taken
to protect the heater from damage and prevent any extraneous matter
from being stored on or around the heater (refer to BS6644 clauses 4, 5
& 6 for details). Any combustible material adjacent to the heater must be
so placed and shielded as to ensure that its temperature cannot exceed
66
C.
O
The heater must be located in a frost free area where leakage from water
connections or the combined temperature and pressure safety valve will
not result in damage to the area adjacent to it. Where such locations
cannot be avoided, a suitable drain tray should be installed under the
heater. The drain tray should be no deeper than 38mm and must be at
least 100mm wider and longer than the heater. It should be piped to an
adequate drain using 20mm diameter pipe, angled for proper drainage.
Access must be provided to the front, top and sides of the heater, with
adequate clearance for servicing and operation (see 3.2 table 12 for mini-
mum clearances).
Tab. 14
Unit height
Service clearance
Total height
required above unit
A
1453mm
400mm
1853mm
5 Before installation
26
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