I&O manual
7
3
cm
/m
50m
m
50m
m
3.2.1 Hydraulic connections
Connection to the system
connect to the unit
condensate discharge
or defrosting tray.
IMPORTANT!
CAUTION
Fig.3-7
It is most important that the hydraulic connections are made
with great care by specialized fitters.
Connect the unit to the water system by means of the fittings which
are marked Flow and Return.
Creation of the trap
The condensation drainage system must be fitted with a
suitable trap to prevent seepage of odors. Following are
directions for setting up the trap.
Fig.3-8
Always provide a drainplug at the bottom of the trap, and
arrange it so that it can be quickly dismantled
Fig.3-6
IMPORTANT!
CAUTION
All the water coils, including the optional extras, are equipped with air
bleed-valves next to the upper union, and with water drain valves
need to the lower union.
All the valves can be opened and closed with screwdrivers or allen
keys.
CAUTION
IMPORTANT!
The water coils can be partially drained through the drain
valves.
To drain them completely, they should be blown out with an
air-jet.
When installation is complete, it is necessary to:
Position the drain-tube so that it does not put strain on the
drainage connector on the unit.
How to turn the coil round, from fittings on the left
(standard) to fittings on the right.
The unit is supplied as standard with connections to the coil on the
left. It is possible however to turn the coil round, so that the
connections are on the right.
The operation of turning the principal and supplementary coils round
can be carried out with the unit in situ, but it is preferable to do it
before installation, with the unit on solid ground.
Procedure to reverse the coil:
Bleed the air contained in the circuit.
Lag the connection pipes and any valves titted with
anticondensation material 10 mm thick or install the auxiliary
drain.
Pour water into the condensation collector tray and check
that the liquid drains properly, following it right through to the
exit of the drain tube. If it does not, check the fall and look for
possible blockages.
Setting up the condensate drainage system
The condensation drainage system must be set up with an
adequate fall, to ensure that the water escapes properly.
Following are directions for setting up a proper condensation
drainage system.
1 Remove the casing (on versions I and II);
2 Remove the screws on both sides which hold the coil to the
structure of the unit;
3 Turn the coil round in the direction indicated in Fig;
4 Re-fit the coil mounting screws;
5 Re-fit the casing (on versions I and II)
Fig.3-9
Содержание KFC-S-2T-250D
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