Ambirad VISION VSO, Assembly, Installation And Operating Instructions, Page: 14 / 56

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Depending on the specific installation, the
flexible gas hose may be routed to the gas
cock at any of the following angles in relation to
the burner:
Vertical (fig.a)
45° angle
(fig.b)
90° angle (fig.c)
Any other position in between these angles is
acceptable.
A clearance distance ‘x’ of min 200mm
must be observed to allow side door
access .
Care must be taken to observe the minimum
pipe
bend diameter (minimum 250mm,
maximum 350mm) & pipe expansion distance
(minimum 30mm, maximum 70mm) as shown in
fig.d.
Maximum bend diameter for the 1000mm
hose is 450mm.
The correct installation as shown will allow
for approx 100mm of movement due to
expansion.
Table 4 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 Internal Thread
1.8 Electrical Connection
This appliance must be earthed.
Supply 230V 50Hz single phase.
Standard heater 116W.
Current rating 0.55 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 three pin plug-in power connector.
Live, neutral and earth 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
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.
Figure 9.a Single Phase Wiring