Technical data

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
BS EN1020 1998.
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
Note
It is a requirement that only suitably
qualified and competent personnel are
allowed to undertake the commissioning
of the heater.
It is also strongly recommended that prior
to commissioning the engineers
familiarises themselves with the heater.
the specific requirements of the
installation / application, and the
information contained within the manual.
Warning
All heaters are subject to a rigorous test
programme prior to despatch, whilst such a
programme does involve pre-commissioning
and the setting of the heater to operate
efficiently and within its designed operational
limits this does not mean that the function of
thorough on site commissioning is less
important
It is strongly recommended that the
equipment used for the sampling and
analysis of the flue gases is accurate to
within +/- 0.1% and maintained so that it is
regularly calibrated.
The following pre-commissioning checks
should be undertaken, having first ensured
that the gas and electrical supplies are
turned off.
(a) Check that all panels and fasteners are
secure and in place.
(b) Check that the heater is mounted safely.
(c) Check that the flue is sealed, secured,
and adequately supported.
(d) Check that the fan is free to rotate, that
the fan is secured to its shaft, and that the
guards and fan assembly are all in place and
properly secured.
(e) Check that the heater is installed so that
it is not tilted and remains square.
(f) Check that the outlet louvres (Axial
heaters) are set to offer minimum resistance
to air flow.
3.1 Electrical pre-tests
The electrical safety checks must include the
following
a) Test for earth continuity
b) Test for resistance to earth
c) Check live and neutral connections are
correct.
d) Check to ensure that when the external
controls operate to switch the heater off,
power remains to the fan
3.2 Gas supply pre-test
Ensure that the service pipework has been
installed purged and tested in accordance
with the relevant regulations, and that the
installation is served by an adjacent isolating
cock.
Connection from the supply to the heater
must also comply with the relevant
regulations (see section 8.0) and must have
been purged and soundness tested by an
authorised engineer
3.3 Ignition sequence
PRE START DRY RUN