LCX
RG66010687_rev.00
16
A
standard
feature of the LCX units is a device for controlling the flow rate (differential
pressure switch) in the water circuit in the immediate vicinity of the evaporator.
Any tampering with said device will immediately invalidate the warranty.
It is advisable to install a metal mesh filter with mesh no large than 1mm on the inlet
water pipe.
It is strongly recommended to install a safety valve in the water circuit. In the event of
serious equipment faults (e.g. fire) it will enable water to be drained from the system,
thereby preventing possible bursts. Always connect the drain outlet to a pipe with a
diameter at least as large as that of the valve opening and direct it toward an area where
the discharge of water cannot harm people. This is a standard feature of units equipped
with the optional buffer tank (optional) or pump/s kit.
Attention: During hydraulic connection operations, never work with open flames near or
inside the unit.
5.4
PROCEDURE FOR FILLING THE TANK
The tank has not been designed to withstand a depression greater than -0.15 Bar. For
this reason, attention should be paid to ensure that the pressure on the pump intake side,
where the expansion tank is positioned, will always be greater than 0.5 bars
while the
pump is running
: this helps to reduce the risk of cavitation.
It is extremely important that the installer follows and verifies the following procedure point by point in
order to prevent the risk of the tank exploding or pump cavitation:
a) Discharge the expansion tank until it reaches the pressure of 0.5 bar.
b) Fill the system and pressurise it until approxi 1 Bar at pump intake (pump stopped).
c) Bleed the system.
d) Check the pump intake pressure (approximately 1 Bar) and start-up the system.
e) Stop the pump after 15-30 minutes and repeat the procedure from step
c)
until you can no longer
hear any noises caused by the presence of air in the system.
