Reznor OUH 100, Installation And Operating Manual

Page: 10 / 48

Page 10
1.8 Location / Positioning
WARNING
All of the basic criteria must be satisfied prior to commencing installation and commissioning, additionally, the
Suspended Oil fired Unit Heater must be positioned and installed so as to comply with all the relevant
standards and guide lines (see section 1.1), as well as meeting national and local fire regulations and insurance
criteria, especially if it is proposed that the heater is to be installed within a special risk area (e.g. proximity to
where petrol engined vehicles are stored or parked, where cellulose spraying takes place, where woodworking
machinery is operated, etc,).
Indirect heaters must not be located in hazardous areas, however, it is permissible for the heater to supply air
to such areas.
The heater must not be installed within an environment where there is a high concentration of chlorides, fluorides,
salts, or other aggressive or volatile chemicals/compounds. Nor should the heater be positioned where the burner
could be adversely affected by high winds or draughts.
The location chosen for the heater must allow for the fitting of an effective flue system.
The location must also allow for adequate clearance for the air supply, return air circulation, oil supply and electrical
supply, whilst also providing good and safe working access.
Suspended free blowing Unit Heaters are at their most effective when located as close to the working area as
possible. However care should be exercised to avoid directing the discharged air directly onto the occupants of the
area to be heated.
On exposed walls heaters should be positioned so as to discharge towards, or along the length of the exposed wall.
In areas where it is proposed that more than one heater is to be installed, a general scheme of circulation should be
drawn up and maintained, thereby offering the best heat distribution.
Air pressure within the area heated and the outside air pressure must remain the same, factors influencing this would
be the presence of extraction systems, ventilation systems, and various types of process plant. OUHA 60-100 models
can be installed to allow the fans to work in opposite directions. This enables the heater to be installed centrally in the
area to be heated and allows warm air to be discharged to both the front and rear of the heater.
The heater must be installed on a flat and level surface made from non-combustible material, which is sufficiently
robust to withstand the weight of the heater and any ancillary equipment. Any combustible material adjacent to the
heater or flue system must be so placed or shielded so that its surface temperature does not exceed 65°C.
All pipe work must be constructed and installed so that it does not permit the ingress of air.
The construction, size, and position of the oil storage tank must take account of the current regulations, as well as
suiting the requirements of the installation.
Please refer to pages 9 and 10 for additional information.
CAUTION
On pumped systems always check that the pump is correctly set up prior to running, and always ensure that
valves are open allowing a free flow of oil through the system.