Watts Industries 22CX Series, Manual

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ON/OFF ELECTROTHERMIC ACTUATORS
Description
Electrothermic actuator with wax thermostat element and auxiliary microswitch
(version NC4 and NA4).
Compliant to the directives LVD 2006/95/EC, EMC 2004/108/EC
According to EN 60730-1, EN 60730-2-14, EN 55014, EN 55104
Approved TÜV SÜD “Safety tested and Production monitored”.
22CX
The electrothermic actuators
22CX series
are ON/OFF devices used for automatic actuation of the valves on:
- thermostatic adaptable valves series 178UM, 1178UM, 179UM, 1179UM, 188UM, 1188UM, 189UM , 1189UM,
130UM, 131UM, 102M, 100M, 120B
- fan coil valves
series 2131, 3131, 4131
- manifolds series 822M
The electrothermic actuators are available in the following versions:
• NA (normally open)
• NC (normally closed)
• 2-wire or 4-wire (with auxiliary microswitch).
Both easy to fix on the valve body with a M30 x 1,5 threaded ring nut.
The thermostatic actuators are designed for on 24 V and 230V power supply (see below table)
.
Application
The electrothermic actuators series 22CX are used for ON/OFF control of the heat emission of terminal control units in heating
and air conditioning systems, through an electric signal transmitted by a thermostat.
The use of electrothermic actuators instead of pure thermostatic actuators allows remote control. The room thermostat or control
component controlling the system can be positioned in the most suitable point of each room to provide regulation and wired
back to the electrothermic control head.
Operation
Operation of the electrothermic actuators series 22CX is powered by on a wax thermostatic element assembled into in the
actuators and activated by a PTC thermistor against a signal sent by a room thermostat or timing thermostat.
When the thermostatic element expands, it supplies the thrust required for the movement of the valve. The 4-wire version is
provided with an
auxiliary contact
for additional features (metering, control of pump, fan or other equipment).
The actuator has a trasparent zone that allows for checking the status of the actuator.
Red
= valve closed -
Black
= valve open.
Type Part no. Power Supply Weight [g]
22CX 22CX230NC2 230V 150
22CX 22CX24NC2 24V 150
22CX 22CX230NC4 230V 200
22CX 22CX24NC4 24V 200
22CX 22CX230NA2 230V 150
22CX 22CX24NA2 24V 150
22CX 22CX230NA4 230V 200
22CX 22CX24NA4 24V 200