0307SCA0AMEN
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3.5 Air distribution
Follow recommended practice for building air distribution.
The following notes are of particular importance:
"Where free blowing air heaters are installed it must be taken
into account that heated air is buoyant when it leaves the
appliance, therefore, air patterns within the space being heated
will modify the air throw pattern achieved.
In building having low heat loss where single heaters are
required to cover a large floor area and in buildings with high
ceiling heights, air re-circulation fans e.g. AmbiRad Maximizors
may be fitted to ensure even heat distribution and minimize
stratification. Care should be taken to avoid impeding air flow
with storage racking, partitions, etc."
3.6 Electrical supply
Wiring external to the air heater must be carried out in
accordance with the rules if force and by appropriately
qualified persons.
A constant 230 volt 50 Hertz single phase with neutral link
fused electricity supply is required. All heaters and controls
must be earthed. A lockable isolator with contact separation of
at least 3.0 mm on all poles should be installed adjacent to the
appliance and within reach of any person working on the
heater.
When a number of heaters are to be connected as part of a
single installation each heater must be provided with a separate
isolator.
The electrical connection to the air heater is at the back of the
appliance. the final connection must be made in the terminals
provided in the control compartment. Follow the wiring
diagram provided with the air heater.
Electrical supply cable conductor size should be 1.5 mm. Fit
the cord grip supplied with the heater. The length of conductors
between the cord grip and the terminals must be such that in the
event that the cable becomes taut the line conductors do so
before the earth conductor.
3.7 Gas supply
SCA 4000 air heaters are designed to operate on either natural
gas (G20) or propane (G31) / butane (G30) gas. Refer to the
specifications in section 2 of this document and to the data plate
for details of supply pressures.
The gas meter and gas service must be checked by the supply
undertaking to ensure that they are adequate to deal with the
total load of all gas fired apparatus installed.
4.0 INSTALLATION
4.1 Unpacking and preparation
Prior to dispatch, the air heater was operated and tested at the
factory. If the heater has incurred any damage in shipment, file
a report claim within 2 working days from receipt.
Check the shipping label and data plate to ensure the
specification of gas and electrical supplies are compatible. Read
this document and become familiar with the installation
requirements and the appliance before commencing installation.
4.2 Suspending the air heater
Before installing the appliance, check to ensure that the
supporting structure is adequate to carry the weight of the
appliance and its ancillaries i.e. flue system.
Table 7 Approximate Net weights (kg)
Size
Weight
Size
Weight
45
28
150
91
60
34
200
97
75
37
250
114
100
60
300
126
125
73
When the heater is lifted for suspension, support the bottom of
the heater with plywood or other appropriately place material.
If the bottom is not supported, damage could occur.
The heater is supplied with four point suspension. All points
must be used. Two threaded nut retainers are provided on each
side of the top of the heater. See dimensions in section 2.2 and
figure 3.
Figure 3 Suspension detail
Be sure that the threaded hanger rods are locked to the heater as
illustrated. Recommended maximum hanger rod length is 1.8m.