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3.1
HEALTH AND SAFETY
Blackheat cannot be responsible for ensuring that all
appropriate safety measures are undertaken prior to
installation; this is entirely the responsibility of the
installer. If Blackheat installs the appliance, it is
essential that the contractor, the sub-contractor, or
the owner indicate the presence of combustible mate-
rials or halogenated hydrocarbons anywhere in the
premises.
3.2
RELATED DOCUMENTS
Notwithstanding their limited scope, the appliance
should be installed in accordance with relevant
National Codes.
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Before proceeding with installation, ensure that
proper clearances to combustible materials will be
observed in the final installed position of the heater.
Clearance distances may be found in Section 2 of
these instructions.
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3.4.1
Prepare a work area corresponding to the size of
heater selected. The area should be clear and free of
debris. The manufacturers approved layout drawing
should be referred to so that the work area is conve-
nient for the final system position.
3.4.2
Layout the appropriate Figure (3, 4, or 5 depending on
heater model) and keep it at a convenient place for
frequent reference. Pull out every part from the pack-
age and lay them out roughly at the position shown in
the assembly drawings. For BH35UT and BH40UT
make sure that the end of the fan tube with the swirler
points away from the U-bend. Keep the bolts and
screws at a convenient place for later usage.
3.4.3
With the suspension holes uppermost, slide the first
and intermediate brackets onto the fan and burner
tubes. For Model BH15, there is no intermediate
bracket. In the following assembly procedures, please
pay attention to this point.
3.4.4
Use two bolts to connect the U-bend and end bracket
together with the suspension holes uppermost. Insert
the plain ends of the burner tube and fan tube into the
two legs of the U-bend, and secure them with four
bolts.
3.4.5
Place intermediate bracket over the ends of the
tubes. Slide bracket onto tubes approximately 500
mm.
3.4.6
Join the burner tube and the remaining plain end tube
using the couplings and bolts provided. See section
4.4.5 for details.
3.4.7
Place the reflectors over the brackets as shown in the
assembly diagrams, and secure them using six screws
at each end. Seal the seam on top of the reflectors
using U-clips at least every 300 mm.
NOTE:
Remove PVC coat from stainless steel reflec-
tors.
3.4.8
Insert the quick-links into the holes at the top edges of
the end, intermediate and first brackets.
3.4.9
Prepare the hanging chains at the position where the
heater will be located. Suspend the heating system as
recommended below. Use the center holes of the end
and first bracket to lift the heating system into posi-
tion. Chains used should have 100 kg minimum
breaking load and preferably should be galvanised
finish. Figure 2 shows two suspension methods.
Method A is recommended because it provides a
semi-rigid suspension. Method B is acceptable.
Figure 2.
Bracket Suspension
3.4.10 Never lift the assembled heater by passing ropes
around the reflector which would cause severe dam-
age to the reflectors.
3.4.11 When angle mounting the heater, the burner tube
must be the tube nearest the floor and the fan tube is
always furthest from the wall (when suspended adja-
cent to a wall). It is recommended wherever possible
that the heater is suspended from above from
unequal length chains to effect the necessary angle
(maximum 20° from horizontal). Always allow extra
lengths of chain so that adjustment of angle can be
made to provide the best heat distribution for your
customer.
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3.5.1
Place the gasket on the flange of the burner tube.
Carefully insert the flanged end into the burner box.
Secure the burner on the burner tube using the four
mounting bolts and washers. Use a spanner to tighten
the bolts evenly.
3.5.2
Place the fan assembly onto the end of the last fan
tube. Slide the fan assembly up to its stop. Tighten
the pinch screw on the assembly making sure that the
fan outlet is positioned as required.
Recommended
Suspension
Acceptable
Suspension
A
B
