Bleeding Air; Air Lock; 230V Electric; Lpg - Bailey Approach Advance Owner's Manual

Bleeding Air

The HTF will contain some air. This is
unavoidable. Air bubbles can also be introduced
when the system is filled.
In a newly filled central heating system, you
will need to bleed air from the bleed points
to ensure best performance. There is an
automatic air bleed valve on the boiler. There
is also an air vent on the expansion tank.
The installer should fit bleed points elsewhere
in the system, especially where the pipes step
up and down, and on radiators and towel rails.
Air will accumulate at these high points and
become trapped.
Contact the dealer or installer for
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details on where the bleed points are
in your system, and how to access
them.
To bleed the system, set
temperature to 30°C and select gas heating on
the control panel.
Set the 12v inline circulation pump on the side
of the boiler to speed 5 (Fig.1 [D]): see page
62, by turning the blue speed dial clockwise,
on the face of the pump motor. NB: Speed is
not adjustable if using the 12v circulation pump
fitted in the expansion tank.
After 10 mins, set the pump back to its
normal running speed (2 for a caravan, 3 for
a motorhome).
Now power off the Alde 3020 Compact HE
boiler completely, making sure that the
circulation pump is not active.
Follow the flow pipe from the boiler, and bleed
the system at each bleed point.
If Alde bleed points have been fitted, these are
metal bleed screws mounted on black EPDM
rubber connectors (Fig. 4). Have a cloth in
hand. To open, turn the screw anti-clockwise
between thumb and forefinger. Air will hiss out.
When fluid trickles out, close the bleed screw
and mop up fluid with the cloth.
the desired
Fig. 4
Move on to the next bleed point and repeat,
until all bleed points have been attended to.

Air Lock

If enough trapped air accumulates at one
point, an air lock can result and prevent the
circulation of hydronic heating.
A ramp or steep slope can be used to raise one
FITTED EQUIPMENT- The Alde Heating System
end of the vehicle, causing the trapped air to
shift around the system. Repeat the full bleed
procedure.
To clear a stubborn air lock in under 15 minutes,
an Alde-certified service agent can use the
Alde 1900-811 or 839 twin-motor service pump.

230v Electric

The Alde 3020 Compact HE boiler has two 230v
electric heating elements, outputting 1050W
and 2100W, or 3150W combined, and drawing
5A, 9A, and 14A respectively (rounded).
230v breakers, fuses, fused spurs and isolator
switches should be rated for 16A.
Before using electric heating, check the
current limit on the electric supply you are
hooking up to.
• 6A limit, only use 1kW electric heating.
• 10A limit, use 1–2kW electric heating.
• 16A limit, use 1–3kW electric heating.
NB: If the electric supply has unstable voltage,
the amperage will also fluctuate.
Alde recommends fitting the 3010-246
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load monitor, allowing you to set a
limit on the current drawn by the
vehicle and the electric heating to
automatically accommodate it.

LPG

LPG (liquefied petroleum gas) has two main
variants, propane and butane gas. The gas
heating in your Alde 3020 Compact boiler can
use propane or butane gas as fuel. Many LPG
fuels contain a mixture of propane, butane and
other additives.
BS 5482 Part 1 states, "For butane cylinders,
satisfactory service might not be obtained
at temperatures of less than 10°C; the most
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