Alde COMFORT 2923 Montageanleitung Seite 11

with the aid of Aldeʼs filling pump. This pump both fills
and bleeds the system. If the system is filled manually,
slowly pour the liquid until the level is approximately
1 cm over the MIN-line in the tank. Bleed the system.
Refill if the level has fallen during bleeding. A newly filled
heating system should be bled at regular intervals during
the first few days of operation.
4:0 Connection to hot water heater
(Applies only if a water heater is fitted)
In order for the water heater to work, it must be connected
to the fresh water system. From the heater, the hot water
hose should run to the shower, thermostat mixer, sink,
etc. On the water heater, connections 1/4"R should be
used. P.T.F.E. tape or similar should be used a thread of
connections to avoid leakage.
The fresh water connections are located on the rear of
the heater. Incoming water at the bottom and outgoing
water at the top. So that the fresh water can be easily
drained off when the heater is not in use, a drain cock
should be fitted to the incoming connection and an air
screw on the outgoing connection.
Fig 15
A. Air screw
B. Hot water
C. Water heater
D. Cold water
E. Drain cock
5:0 Installation inspection
The LP gas system:
• After installation or service, always test the LP gas
installation under pressure following currently valid
regulations.
• If a leak is present, find the leak using leak detection
spray or soapy water.
Note: open flames must not be used during leak
localisation.
• Check that the reduction valve is at the right pres-
sure.
We recommend the mounting of an Alde LP gas leakage
tester in order to further increase safety. The tester is
mounted closest to the reducing valve and enables you
to test that the system does not leak by simply pushing
a button.
The heating system:
GB
• The heating system should be tested for leaks when
the complete system is visible, that is, before any fit-
tings are mounted. Two methods are possible: either
test pressurisation at 0.75 - 1.0 bar for 15 minutes,
followed by reduction of the pressure to a maximum
of 0.05 bar; or by filling the system with liquid and
checking by inspection. No leakage of liquid can be
accepted.
• Check that all hose clips are fitted and correctly pla-
ced.
Other points:
• Check that the drainage tubes and the bleed tube on
the expansion tank are not blocked, and check that
the drainage tap on the water heater (if mounted) is
not blocked.
• Check that the circulation pump rotates in the correct
direction (anticlockwise) at the rubber connection.
• Check that the chimney and the chimney pipe are
correctly placed and securely attached, and check
that the input tube on the Comfort 2928 is mounted
on both chimney and boiler.
· Check that air can pass freely through the ventilation
drum.
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