HTR
MF30 – 3.07
3
2.0
I
NSTALLATION
2.1
Unpacking & Handling
When unpacking or moving the furnace lift it by both ends of its base. Never lift it by any protruding parts
or by the lid. Preferably, use two people to carry the furnace.
Remove any packing material from around or inside the furnace before use.
NOTE: This product contains
Refractory Ceramic Fibre
(better described as A
lumino Silicate Wool
)
for precautions and advice in handling this material see the ‘Repairs and Replacements’ section.
2.2
Siting
Place the furnace in a well ventilated room, away from other sources of heat, and on a surface which is
resistant to accidental spillage of hot materials. Do not mount the furnace on an inflammable surface.
Ensure that there is free space around the furnace. Do not obstruct any of the vents in the control section:
they are needed to keep the controls cool.
Ensure that the furnace is placed in such a way that it can be quickly switched off or disconnected from the
electrical supply - see below.
2.3
Electrical Connections
Connection by a qualified electrician is recommended
The furnace is made for single phase A.C. supply, which may be Live to Neutral non-reversible,
Live to Neutral reversible or Live to Live.
Check the furnace rating label before connection. The supply voltage should agree with the voltage
on the label, and the supply capacity should be sufficient for the amperage on the label.
The supply should be fused at the next size equal to or higher than the amperage on the label. A
table of the most common fuse ratings is also given in section 8.1 of this manual. Where a supply
cable is present there are internal supply fuses; customer fusing is preferred but not essential.
Furnace with supply cable: either wire directly to an isolator or fit with a line plug.
Furnace without supply cable: a permanent connection to a fused and isolated supply should be
made to the internal terminals after temporary removal of the furnace back panel.
Connection by line plug: the plug should be within reach of the operator, and should be quickly
removable.
Connection to isolating switch: this should operate on both conductors (single phase) or on all live
conductors (three phase), and should be within reach of the operator.
The supply MUST incorporate an earth (ground).
CONNECTION DETAILS
supply type
Supply
Terminal label
Cable colour
Live-Neutral
Reversible or Live-Live
1-phase
L
Brown
To live
to either power conductor
N
Blue
To neutral
to the other power conductor
PE
Green/Yellow
To earth (ground)
to earth (ground)
2.4
Gas Supply
The furnace is supplied with a Nitrogen inlet and flowmeter as standard. The gas supply must be
provided with an on/off valve and pressure regulator to a maximum of 4 psi. Connect the gas
supply to the inlet on the left-hand side. The exhaust box on the right-hand side may be connected
to a outlet pipe provided this does not restrict the gas flow. The exhaust incorporates a safety
pressure relief valve set to relieve pressure above 1 psi in case the exhaust becomes blocked.
Do not use toxic gases without taking appropriate precautions. The furnace is not suitable for use
with combustible gases.
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