page no. 30 of 68
CP
x Range Users, Installation & Servicing Instructions Doc Ref M201 issue 2.9 Nov 2018.
Warning: THIS APPLIANCE MUST BE
EARTHED.
Warning: Wiring external to the unit must be
carried out by an appropriately qualified
person to current IEE regulations for
Electrical Installations and any local regulations which
apply.
The local electrical supply must be run to a point adjacent
to the heater and be suitably terminated to provide an
isolation point that will prevent remote activation of
the unit during servicing. Wiring should be completed in
flexible conduit.
The local electrical supply conditions must be compatible
with the electrical data given on the appliance data plate.
Heaters are for use with 230V, 1N, 50Hz or 400V, 3N,
50Hz supplies (see heater data plate).
The method of connection to the main electricity supply
must:-
- facilitate the complete electrical isolation of the
heater(s) that will prevent remote activation of the heater
during servicing.
- be in a readily accessible position adjacent to the
heater(s).
- serve only the heater(s).
- have a contact separation of at least 3mm in all
poles. See the wiring diagram for the heater electrical
connections.
All units are fully prewired and only require final
connections for the incoming mains supply. Heaters not
supplied with inbuilt time and temperature controls will
also require completion of the external control circuit
(230V) via a room thermostat, time clock etc. and, if
applicable, the remote low level lockout reset.
Reference must be made to Section 1.2 to ascertain the
electrical loading of the unit(s) being installed so that
cables of adequate cross-sectional area are used for
the electrical installation. The length of the conductors
between the cord anchorage and the terminals must be
such that the current carrying conductors become taut
before the earth conductor if the cable or cord slips out
of the cord anchorage. All external controls must be of an
approved type.
Heaters supplied less main fan must be electrically
interlocked to the air movement system so that this is
started in the same manner as the air heater fan would
be viz. A connection from the appropriate heater terminal
(see wiring diagram with the heater) must be made to one
side of the fan motor contactor coil, the other side of the
coil being connected to Neutral. Under no circumstances
must the fan motor electrical supply be taken direct from
the internal wiring of the heater.
Key:
A =
2 core and earth (single phase)
4 core and earth (three phase)
B* = MC200 On/Off = 5 core and earth
MC200 High/Low = 7 core and earth
MC200 Mod = 7 core and earth
C=
Screened 2 core (MC200 models only)**
** (screen must be grounded only at the MC200, See
instructions supplied with controller for wiring sizing,
Max. 100m)
Optional
Remote Controller
(MC200 shown)
Remote
Sensor
(optional)
Typical wiring
installation
230V Supply shown
(415V option on 120-300)
Fused
Isolator
