6.1 Electrical connections label
7 Intended use
The device is intended for use exclusively in heating systems containing water or water+glycol solutions up to a concentration of 50%. The device
can be used in systems with maximum medium temperature of 85°C and maximum pressure of 10 bar. The minimum operating temperature of the
medium is 5°C. In case of application with condensation phenomena, the installer must provide an adequate and safe system to prevent or dispose
of the condensation build-up in order to prevent damage to persons or property. The maximum ambient temperature is 50°C. The minimum ambient
temperature during operation is 5°C, in the absence of condensation. The device must be assembled on the boiler return, with a suitably sized and
calibrated bypass. The drawing below shows the operator's stop zones for the machine operation and control. Provide a passage area around the
strainer of at least 50 cm and, at the rear, an area for extraordinary maintenance (strainer disassembling) of at least 100 cm:
WARNING
: do not stand up, lean or sit on the machine.
ATTENTION
: if the connection pipes are not properly insulated they could result in high temperature and cause burns and scalds. Provide
a correct and safe insulation of all hot surfaces.
9
10
N
F6 = 2A - 250 Vac
F7 = 315 mA - 250 Vac
L
230 V ˜
50 Hz
N L
V2
N L
M1
M1
OPEN
CLOSE
COM.
OPEN
CLOSE
COM.
OPEN
CLOSE
COM.
V1
G. OUT
IN1
V3
A
B
BUS
SCH
-
2
1
+
S2
-
2
1
+
S1
serie 638
serie 638
H0004960
S1
S2
V2
M1
V1
V3
230 V ˜
50 Hz
ALARM OUT1
μ
1 A
max
48 V
˜
AREA TO LEAVE FREE
FOR EXTRAORDINARY
MAINTENANCE
100 cm
50 cm
50 cm
50 cm
