31
The cover to the electrical panel can be removed by
undoing the screws which secure it to the panel. A copy
of the wiring diagram is affixed to the inside of the
cover
.
Ensure that all connections are secure and that
there are no loose strands which could bridge
across the terminals.
One electrical panel per heater is required, unless
heaters are specified for multiple heater control
applications. On no account should more than one
heater be connected to a single time switch or
thermostat. The only exception to this is when a control
panel suitable for multiple heater applications is
supplied by the manufacturer, in which case the wiring
diagram supplied with the control panel should be read
in conjunction with the existing wiring diagram.
Any ancillary electrical items e.g. room
thermostats, time switches, remote panels etc,
must be wired into the heater electrical circuit in
accordance with the diagrams provided.
When external controls operate to switch the heater
OFF, power to the heater should remain to allow the
fan to continue to operate to sufficiently cool the
heater thereby preventing damage to the heat
exchanger.
WARNING!
THESE HEATERS ARE NEUTRALLY
SWITCHED.
ELECTRICAL TABLE
Type Electrical
supply
Power
motor
Fuse (1)
Thermal
Relay
Power up
rated fan
motor
Fuse (1)
up rated
motor
Relay up
rated
motor
Live
Cable (2)
Earth
Cable (2)
(50Hz
∼
)
(kW) (A) (A) (kW) (A) (A)
(mm
2
) (mm
2
)
1
230V 0,50 6,3 N.A. 0,50 6,3 N.A.
1,5 1,5
2
230V 0,50 6,3 N.A. 0,75 10
3,7÷5,5
1,5 1,5
3
230V 0,50 10 N.A. 1,1
12 5,5÷8,0 1,5 1,5
4
400V 3N
0,75
10
1,8÷2,6
1,5 10
2,6÷3,7
1,5 1,5
5
400V 3N
1,1
10
2,6÷3,7
2,2 10
3,7÷5,5
1,5 1,5
6
400V 3N
1,5
10
2,6÷3,7
3,0 12
5,5÷8,0
1,5 1,5
(1) Included with the heater
(2) The supply cable size should ensure a fall in voltage of less than 5% over a length of 30 meters
DUCT CONNECTION
The heater is supplied with a duct spigot fixing points and dimensions below.
Type A
B N°of
fixings
1
435 232 6+2
2
515 272 6+2
3
695 362 6+2
4
940 242 10+2
5
1300 332 10+2
6
1540 392 10+2
Important:
•
A gasket should be provided between the heater
flange and the ductwork (not supplied)
•
In order to prevent the transmission of vibrations to
the ducting a suitable flexible joint is advised
•
The ductwork should be suitably supported through
out the installation.
•
The total resistance in both the inlet and supply
ducting should not exceed that given in the
TECHNICAL DATA section of this manual .
The heater should always be connected to
ductwork
, and not operated as a free blowing unit
only a suitably qualified and competent person
should size the ductwork.
Ø7.5
52
0
24
4
46
4
A
29
29
16
B
1
15
24
4
15
B
16
