0307SCA0AMEN
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IMPORTANT:
Suspend the heater from the threaded nut retainers. Do not
suspend from the heater cabinet panels.
Do not place or add additional weight to the suspended air
heater. See hazard levels, page 2.
The heater must be installed in a level plane to ensure
proper operation.
4.3 Fitting the Combustion air inlet/Flue system
Flue pipe runs may be horizontal or vertical and terminate
either through the wall or roof. See table 5 for maximum vent
length for an appliance installed as type B or table 6 for
maximum lengths and approved supplied concentric terminals
for a heater installed as a type C appliance.
All pipe runs must be independently supported so that the
heater does not carry any of the weight of the flue system.
4.3.1 Fitting the flue pipe
The flue pipe socket is located on the back of the air heater.
Flue pipes must be sealed. Use seamless, aluminium pipe or
equivalent. Follow pipe manufacturer's instructions (see figures
4 & 5).
Table 8 Flue pipe socket size (dia mm)
SCA
45,60
75,100,125
150,200,250,300
Socket
80
100
130
4.3.2 Installing a guard on the combustion air inlet
pipe for power vent (Type B installations)
The combustion air inlet socket is located at the back of the
heater. When installed as a type B appliance, protect the inlet
by fitting an access guard on the socket.
Do not block this
socket as it supplies combustion air for the burner (see
figure 4).
4.3.3 Fitting the combustion air inlet pipe for balanced
flue (Type C installations)
The combustion air pipe attaches directly to the inlet socket at
the back of the heater. Air inlet pipes must be sealed. Use
seamless aluminium or equivalent. Follow the pipe
manufacturer's installation instructions. See typical installations
in figure 5.
Table 9 Air inlet socket size (dia mm)
Figure 4
Figure 5
4.4 Gas connection
Connection to a gas network may only be carried out by
appropriately qualified persons. The gas installation must
comply with the rules in force using materials appropriate for
gas installation.
To facilitate servicing, the air heater must be fitted with an
approved gas service tap and union fitting or union tap adjacent
to the appliance.
The inlet gas supply line must be installed so as to permit the
access door to be opened and to allow removal of the slide out
burner assembly.
SCA
45,60
75,100,125
150,200,250,300
Socket
80
100
130