supplier should
check that the
meter and
service
connection to
the heater are
capable of
delivering the
required volume
of gas, thereby
ensuring that
the minimum
burner pressure
can be
achieved.
Consideration
should be given
to the pressure
drop on single
and multi heater
installations and
the effect they
may have on
other plant
sharing the
supply.
If it is necessary to fit a gas pressure
booster, the controls must include a low
pressure cutoff switch which must be fitted
on the supply / inlet side of the booster. It is
also a requirement that the gas supplier is
advised prior to the installation or fitting of
the booster.
Each heater supply must be fitted with a
separate isolating cock positioned adjacent
to and upstream of the union which must be
sited outside the heater the isolating cock
should be of the 90
0
turn type and should be
clearly marked OPEN / CLOSED
it should also be installed so as to fall to the
closed position
An approved gas jointing compound must be
used on all joints and unions and the system
purged and tested for soundness prior to
final connection
The connection to the heater can be made
by way of either an approved flexible
coupling or rigid connection . Threaded
connections must comply to ISO 288/1 or
ISO 7/1 further information concerning
accepted European practice is detailed in
June 1995 version of prEN1020 Annex 7.
The diameter of the pipework from the
isolating cock to the burner must not be less
than the diameter of the connection into the
multiblock.
Note
Reference to The Institute of Gas
Engineers publications Utilisation Procedures
IGE/UP1 and IGE/UP2 together with
reference to BS6891 is strongly advised.
3.0 Commissioning
Summary of Contents for GUHA
Page 6: ......
Page 26: ...GUH 50 to 165 Piezo Ignition 6 0 Wiring Diagrams GUH 205 325 Piezo Ignition...
Page 27: ...GUH 400 408 Piezo Ignition GUH 50 325 Automatic Ignition...
Page 28: ...GUH 400 480 Automatic Ignition T CP 2 Control GUH 50 325 Piezo ignition...
Page 29: ...CP 2 Control GUH 50 325 Auto reset CP 2 Control GUH 400 480 Auto reset...
Page 30: ...CP4 Control GUH 400 480 CP 4 Control GUH 50 325...
