Doc No. 700025 Page 8 of 32
1.7 Electrical
Connections
This appliance must be earthed.
Supply 230V 50Hz single phase.
Standard heater 241W.
Current rating 1.05 amp max
(inductive).
Fuse: external 3 amp.
All electrical work should be
carried out to IEE standards by a competent
electrician. The electrical connection to the
heater is made by means of a four pin plug-in
power connector. Live, neutral earth & high fire
connections should be made via a flexible
supply cable to the power connector and routed
clear of the heater or tubes.
The flexible supply cables should be of
0.5mm²
and
comply
with
BS
6500:2000. The wires in the mains lead
are coloured in accordance with the
following code: Green & Yellow Earth;
Blue Neutral; Brown Live; Black Live
It is recommended the heater or group
of
heaters
are
controlled
by
thermostats, a time switch and if
required manual control switches and a
frost thermostat.
We recommend use of AmbiRad approved
controls.
Please refer to control manual for
siting and installation details.
Where alternative manufactures controls are
used, please refer to their instructions for their
siting and installation details.
Table 2 Gas Supply Pressures
Gas Category
I2H
I3P
Gas Type
Natural Gas (G20)
Propane (G31)
Max Supply Pressure (mbar)
25
45
Min Supply Pressure (mbar)
17
25
Nominal Pressure (mbar)
20
37
Gas Supply
Connection R½ ½in BSP External Thread
fig.f
fig.g
The methods shown in fig.f and fig.g are unacceptable, due to undue stress on the hose & fittings.
Figure 4.b Typical VTLF/VTALF/VTCLF Wiring Connections
Figure 4.a Typical VTUT/VTAUT/VTCUT Wiring Connections
Fused Spur
Fused Spur
L
Black
L
Brown
N
Blue
E
Green &
Yellow
