BENSON OUH 2 100, Installation And Operating Manual

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Caution
The internal by-pass plug must be removed from the burner
pump when used in a pressurised ring main application.
1.9.6 Pipe work and fi ttings
Warning
Galvanised or plastic pipe work and fi ttings must not be used.
(see BS 5410 Part 1 1997)
Caution
All joints must be sealed properly, if necessary using PTFE tape
or other approved sealing media.
Caution
The pipe work must be eff ectively sealed so as to prevent the
ingress of air.
Note:
It is advisable to check all pipe work prior to installation to
ensure that there is no loose debris or scale present.
Black iron pipes can be hammered to assist in the removal of
these contaminants.
Note:
The oil feed to each heater must be fi tted with a fi re check
valve and isolating valve.
Caution
The fi re check valve must be operated by way of a fusible link
positioned so that it is above the burner.
Note:
Any waste oil or sludge must be disposed of correctly.
Warning
Never dispose of it by dumping or tipping it down drains or
into watercourses where ground water can become polluted
and environmental damage caused.
1.10 Electrical supply
Wiring external to the the Suspended Oil fi red Unit Heater
must be installed in accordance with any local, national, and
European regulations, as well as meeting the appropriate
requirements of IEE regulations.
Caution
The means of connection to the main electrical supply must
allow for complete electrical isolation of the heater,
furthermore, in the case of a unit wired for a three phase
supply, the supply should only be used to serve the heater
itself and no other plant or equipment. The position of the
isolation switch must be such that it is adjacent to the heater
and easily accessible at all times. In addition, the isolator itself
must have a contact separation of not less than 3mm.(as per
BS5991 clause 20.2).
The Control fuse ratings are detailed on the appliance data
plate.
Warning
Ensure that the electric and oil supplies are turned off before
any electrical work is carried out on the heater.
Caution
Ensure that wiring cannot make contact with any surfaces
liable to be subject to high temperatures or where the
insulation of the wiring could be impaired as a result of such
contact.
Warning
All connections must be checked to ensure that they are
secure, and free from corrosion.
Warning
Terminals and connections should also be checked to ensure
that no stray strands are bridging terminals.
Caution
Final connections for any additional external controls must be
completed on site, and must be carried out according to IEE
regulations.
Separate user information is provided for the time control unit
and the burner, and forms part of the product information
pack which accompanies every heater when despatched.
Warning
All heaters are supplied fused and pre-wired, all must be
earthed.
Caution
The main electrical supply must not be switched off or
disconnected as a method for stopping the heater, the
exception to this is in an emergency, or during servicing, when
the heat exchanger has been allowed to cool suffi
ciently to
prevent any damage from occurring. Claims for damage will
not be considered if they have resulted from incorrect wiring
or the incorrect use of the heater.
Warning
Always ensure that the appropriate personal protective
equipment is used.