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TECHNICAL INFORMATION
Technical information
274 |
PVC-U perimeter trunking systems
Material
Odyssey accessory boxes and fittings
are flame retardant ABS which is 100%
recyclable.
Installation
Positioning
For dado, horizontal or vertical
installation.
Expansion/contraction
PVC-U expands and contracts at a
uniform rate of approx 5.25mm in a
3 metre length for a temperature
change of 25°C. Therefore, a 3mm gap
between each length of trunking base
is recommended.
Adequate allowance is made within
the fittings for thermal movement of
the covers, which have a 10mm
overlap on each side.
Fitting
• The base is supplied with pre-cut
elongated holes at 250mm centres.
• Internal couplers on base units are
not required.
• To fasten base, use No 8 round head
screws and washers.
• Avoid over-tightening to permit
thermal movement.
• The use of plastic caps over screw
heads is recommended to protect
installed cables.
• To cut the trunking, use a fine-
toothed panel or power jig-saw.
• External moulded fittings overlap
the joints by up to 10mm to cover
cutting inaccuracies.
• A variable angle jig-saw or chop saw
is recommended for cutting 45
degree mitres.
Single lengths
Where it is required to fit a single
length of trunking (under 3 metres)
between two inside walls and no
accessory box is fitted, it is advisable to
install a coupler in the centre of the run
to facilitate the removal of the covers.
Joints and bends
All base joints should have a 3mm gap
to allow for expansion.
•
Internal bends:
the two base
sections should be cut square and
butt joined at the corner. The internal
end cap component should be fitted
to the open end to maintain trunking
integrity.
•
External bends:
the base must be cut
square with the corner and the
internal radius control segregator
fitted into the two base sections.
Adjustable bends: these allow 85°
to 95° to accommodate building
tolerances.
•
Flat bends and tees:
have moulded
and segregated base units. These
are fitted into position and the
trunking base then cut to butt up to
mouldings.
Cutting is not critical as the external
moulded clip-on fittings cover the
joints and overlap the trunking covers
by 10mm each side, thus covering any
inaccuracies.
Bend radius control
The bend radius control fittings for
Odyssey provide a bend radius of
25mm, 50mm and 65mm.
Accessory boxes
Accessory boxes are mounted in the
centre compartment. If supplied from
either of the outer compartments,
drill the main web adjacent to the
box position. Remove the appropriate
knock out and clip the box into the
trunking base. For boxes in the same
compartment as the supply, remove
the appropriate box knock-outs and
clip the box into trunking base.
• If boxes DD1510 and DD1520 are
installed consecutively, a cut section
of centre cover should be fitted
between them.
• If DD1540 or DD1550 are installed,
Adaptor DD1590 must be fitted
either side to align with curved cover.
• If DD1540 or DD1550 are installed
consecutively, use the spacer
provided and at each end of a run
use accessory adaptor DD1590 to
align with curved cover.
• Part M coloured accessory boxes are
available to meet the requirements
of DDA regulations for Visual
Impairment.
Covers
The covers have been designed to
limit unauthorised removal and remain
in position during normal conditions,
irrespective of impact and minor
undulations of the mounting surface.
Covers – fitting
Outer covers are fitted first. Locate front
clip feature into the base and then roll
the cover to the back of the trunking
until the rear clip feature positively
locates – it is possible to hear the click
when this is located correctly. The
centre cover is then clipped into place
from the front. If accessory boxes are
installed, the centre cover is butt joined
beneath the moulded flange of the
box (Odyssey box DD1510/DD1520) or
adaptor (DD1590). The cut edges of lids
are then concealed.
A gap of 15mm should be left between
cover joints to permit fittings to clip to
the base.
Covers – removal
To remove a cover, first detach a
coupler, internal or external bend
component to gain access. The main
cover can then be gently eased off
the base. To remove the outer cover,
firstly ease from the base by inserting
the blade of a terminal screwdriver
between the captive legs of the cover
and the base and then peel off.
Screening
Special conductive spray coating can
be applied to one compartment, the
cover, accessory boxes and fittings,
to screen data cables against EMI
interference.
•
For data/voice circuits only:
Warning: Owing to its relatively
high surface resistance, CS coating
SHOULD NOT be in contact with low
voltage circuits BS7671 (1992) 50
V.A.C. – 1000 V.A.C. unless additional
measures are undertaken.
Antimicrobial
For technical details of antimicrobial
Odyssey Bio trunking, please refer to
Laboratory and Healthcare section.
Odyssey trunking