TECHNICAL DATA SHEET 02/2018 - ENG
ICMA S.p.a. via Garavaglia, 4 20012 Cuggiono (MI) – ITALIA
Tel. +39 02 97249134 / +39 02 97249135
pag. 11
ART. S001-S002-S003-S004 SOLAR MODULE
SHUT/OFF VALVE AND CHECK VALVE
The group is equipped with shut-off valves with thermometer and built-in check valve 4 e 7 (Tab.1). The valves intercept the
delivery and return flow to let fill, wash and discharge the system. They also enable a quick and easy replacement of the pump
without emptying the system.
The shut-off valves are also equipped with check valves which ensure the proper flow of the heat-transfer fluid inside the solar
circuit preventing undesired refluxing when the pump is not working
1)
To fully
close
the shut-off valves turn the regulatig handles
clockwise
until they stop (Fig.5).
2)
To allow the fluid to pass through the valves
in both directions
and open the
check valve, turn the regulating handles
to 45° (Fig.6).
3)
During the
normal operating cycle
instead, the valves must be in the position shown in Fig.7 by turning the
regulating handles
counter-clockwise
until they stop.
DEAERATOR
(Present only in the solar modules art. S001 and S003)
The solar modules art. S001 and S003 are equipped with a deaerator 8 (Tab. 1).
During the normal functioning of the solar circuit, the air present in the heat-transfer
fluid is separated and collected in the upper part of the deaerator.
During the start-up, the air collected in the deaerator has to be periodically discharged
by the manual air vent located in the upper part of the deaerator by turning its spindle
counter-clockwise with a screwdriver. After discharging all the air in the deaerator,
close the vent by turning its spindle clockwise until it stops.
Once the star-up is completed, for the first few months this operation must be
repeated every week or every month.
When the system is working, instead, it is necessary to repeat such operation just
every 6 months to mantain the solar system efficient.
Risk of burns!
When bleeding the system, depending on the pressure and temperature of the heat-
transfer fluid in the system, opening the air vent may cause a high-speed jet of high-
temperature liquid or water vapour, dangerous for the operator.
To prevent any accidents, please follow these instructions:
- Carefully turn the air vent protecting your hands with suitable gloves.
- Keep your face away from the deaerator.
- Protect all components and electrical connections from water.
Fig.7
Reference
notches
Fig.5
Reference
notches
Thermometer holder
(closed position)
Fig.6
45°
Reference
notches
Open
passage
45° Rotation
Fig.8
Normal
functioning