Carbolite HTF Series - Manual (Page 4)

RHF & HTF
4
MF22 3.09
2.4 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.