EF, AF
4
LF01
2.3 Electrical Connections
Connection by a qualified electrician is recommended.
The furnace requires a single-phase A.C. supply with earth (ground), which may be Live to Neutral
non-reversible (polarised), Live to Neutral reversible (non-polarised), or Live to Live.
Check the following before connection, by reference to the furnace rating label.
Voltage: the voltage on the label and the actual supply voltage should be compatible – if in doubt
contact Lenton. See section 2.4
Amps: the actual supply must be capable of supplying the required amps. It should be fused at the
next available fuse size equal to or greater than the amps on the rating label.
A supply cable is normally fitted. In there is no cable, remove the back panel and connect a
suitably rated cable to the internal terminals.
Either wire the supply cable directly to an isolator or fit it with a line plug. The plug or isolator
should be within easy reach of the operator to permit quick disconnection of the power.
For operator safety 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
Voltage Level & Power Adjustment
Check the furnace rating label voltage. If the actual supply is not the same as the voltage on the
label, then the controller power limit should be adjusted.
To alter the power limit
If the actual supply voltage is higher than the voltage on the rating label or the voltage for which
the furnace was last set, then do the following operations quickly and immediately after switch-on.
(Alternatively, temporarily reduce the temperature setpoint to zero to prevent heating.)
Press Page
/
until
oP
(output list) is displayed. Press Scroll
Q
until
OP.Hi
(Output High) is
displayed. Press Down
q
or Up
p
once to display the value of
OP.Hi
(it is good practice to write
down the original value).
To alter the parameter to the desired value use Down
q
or Up
p
.
Caution:
Do not increase the power limit value to a value above the correct level for the supply
voltage. The heating elements could burn out, or a fuse could blow.
Note that setting the power limit to zero prevents the furnace from heating.
Summary of Contents for Lenton AF 11/6
Page 14: ...EF AF 14 LF01...
Page 15: ...EF AF LF01 15...
