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Email
sales@marshall-tufflex.com
www.marshall-tufflex.com
PVC-U Perimeter trunking systems
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Technical information
Material
PVC-U is flame retardant and self-
extinguishing. It provides a 100%
recyclable material with good
sustainability.
Installation
Positioning
Series R is suitable for dado. Should
Series R 170 (not 130) be used as a
skirting system, sufficient clearance
should be allowed between the floor
covering and the profile fittings that
clip over the cover i.e. 5mm + floor
covering is recommended.
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 cover.
Joints and bends
All base joints should have a 3mm gap
to allow for expansion.
•
System 130 internal bends and
external bends:
trunking body must
be mitred at 45° to ensure total
enclosure of trunking, including any
internal fitted segregator.
•
System 170 internal bends and
external bends:
trunking body
should be cut to butt up to the
prefabricated flat bends.
•
Systems 130 & 170 Flat angles and
tees:
are prefabricated. Trunking
bases should be cut to butt up to
fittings.
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
Please contact the Technical Team on
01424 856688
Accessory boxes
All accessory boxes are mounted in the
main, centre compartment. The
appropriate knockout removal
depends whether supply is to be run in
the centre compartment or either/both
of the outer segregated compartments.
When knockouts are removed, clip the
box into the trunking body. When
boxes are installed consecutively, a
short cut length of centre cover (14mm
min.) is required to cover the space
between boxes.
Covers
The cover has been designed to remain
in position irrespective of impact
during normal conditions, minor
undulations of the mounting surface,
and to limit unauthorised removal.
Covers – fitting
The single cover is clipped into place
from the front. If accessory boxes are
installed, the covers are butt-joined to
the edge of the box (RSSB1/2). The cut
edges the cover are subsequently
concealed by the accessory.
Covers – removal
To remove the cover, first detach a
coupler, internal or external bend
component to gain access. The cover
can then be gently eased off the base.
Method of continuation through a
partitionwall
•
Systems 130 only:
continue the main
lateral run of base through the
partition wall with short lengths of
cover fitted where the trunking
passes through the partition. The
partition wall trunking is then butted
up to the main run and the joint
covered by an Internal bend.
Offset dimensions
The minimum set that can be
accommodated in the same plane
(from internal to external bend), is
shown below.
Series R trunking
155
