1700-1800° Chamber
Electrical Connections
Connection by a qualified electrician is recommended.
The smaller models are designed only for single phase electrical supplies with or without neutral.
The larger models are for 3-phase use, but can also be supplied for single phase. The furnace must
be connected only to the type and voltage of supply for which it was ordered.
The voltage or range of voltages on which the furnace may be operated is given on the furnace
rating label. Check that the supply voltage is compatible with the voltage on the label, and that the
current capacity is sufficient for the amperage on the label, before connection to the supply. A
table of the most common ratings is given in section 8.1 of this manual.
In some models supply cables are fitted, as are internal supply-rated fuses. The cable may be
directly wired to an isolator or fitted with a line plug.
The supply point must be within reach of the furnace operator and must incorporate either an
isolating switch which operates on both conductors, or a quickly removable plug.
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)
supply
Terminal label
Cable colour
3-phase
L1
Black
to phase 1
L2
Black
to phase 2
L3
Black
to phase 3
N
Light Blue
to neutral
except delta
PE
Green/Yellow
to earth (ground)
DO NOT connect a furnace ordered for three phase use to a single phase supply or to the wrong
type of three phase supply.
3.0
4
MF22
Summary of Contents for HTF 18/15
Page 14: ...1700 1800 Chamber 14 MF22...
