If the product is to be used to heat substances that emit fumes, a fume extraction duct
of approximately 75 mm - 150 mm inlet diameter may be placed directly above the
chimney outlet.
Do not make a sealed connection to the product chimney as this causes excessive
airflow through the chamber and results in poor temperature uniformity.
Key
A
Duct (75mm-150mm diameter)
B
Ambient air is drawn into duct
C
Chimney
D
25mm vertical gap between chimney and duct
2.5
Electrical Connections
Connection by a qualified electrician is recommended.
The model covered in this manual has three internal circuits and is normally supplied for
connection to a three phase power supply. This may be either star or delta, but a
product must only be connected to the type and voltage of supply for which it was
made. If the product is ordered for a single phase supply, this may be Live to Neutral
reversible or non-reversible, or Live to Live.
Check the product rating label before connection. The supply voltage should agree with
the voltage on the label and the supply capacity should be sufficient for the current on
the label.
The supply should be fused at the next size equal to, or higher than the current on the
label. A table of the most common fuse ratings is also given towards the back of this
manual. When the mains cable is factory fitted, internal fuses are also fitted. It is
essential that the operator ensures that the product is correctly fused.
Products with a factory fitted supply cable are designed to be wired directly to an
isolator or fitted with a line plug.
7
2.0 Installation
