Cooling Connections; Tightness Check (Recommended Operation) - Ferroli MIDAS PC10 12000 Manuel D'installation

COOLING CONNECTIONS

Comply with the following indications when connecting the cool-
ing pipes:
• Match the ends of the previously flared pipe with those of the
connections on the interior and exterior units.
• Tighten the union by hand and then torque it with the aid of an
adequate wrench (it is advisable to use a fox wedge to prevent
tensions from being created on the pipes). The required
wrench sizes are given in the "PIPE TIGHTENING" section.
Repeat the operation for the second cock.

TIGHTNESS CHECK (RECOMMENDED OPERATION)

Before setting the system in a vacuum, it is advisable to make
sure that the cooling circuit is tight, including the connecting
joints between the pipes and the interior unit.
described below:
• With the service valves of the exterior unit completely shut,
remove the cap from the service tap (1-Fig.2) and the union
(2-Fig.2) of the gas valve (the larger one)
• Connect the service valve to a monometric unit plus nitrogen
bottle (N2).
• Pressurize the system to a maximum 30 bar using the nitro-
gen in the bottle.
• Use liquid soap to check that the joints are tight.
Keep the bottle vertical during the pressurizing
operation to prevent liquid nitrogen from infiltra-
ting into the system!
• Check all the connection joints on both the exterior and inte-
rior units to make sure that they are tight. Bubbles will form if
leaks are present. If bubbles appear, make sure that the
unions have been tightened and that the flares are the right
shape.
• Wipe off the liquid soap with a rag.
• reduce the pressure of the nitrogen in the circuit by loosening
the charge pipe from the bottle.
• Having reduced the pressure, disconnect the nitrogen bottle.
INSTALLATION
Proceed as
Fig.1
Fig.2
19