Watts Industries 22CX Series User manual

ON/OFF electrothermic actuators
Series 22CX
Main features
- 22Cx series available in the following versions :
• NA (Normally open)
• NC (Normally closed)
- 2-wire (Standard)
- 4-wire (With auxiliary contact)
- New compact design.
- Transparent window on the cover to check
status of actuator (On/off)
- Compliant to the following directives:
• 2006/95/EC (LVD)
• 2004/108/EC (EMC)

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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

ON/OFF ELECTROTHERMIC ACTUATORS
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Installation
Technical features
Electrothermic actuators 22C series can be selected according to the type of system, installation space and power supply.
In systems with 2-way control valves fitted with electrothermic actuators it is advisable to install by-pass valves
in (466 series or USVR series) to ensure a minimum recirculation of the mean..
Features
1. Transparent zone
2. Wax thermostatic element
3. Opposing spring
4. Electrical microswitch (4 wire)
5. Electrical wiring
6. Provision for sealing
Techincal Features
Action ON/OFF
Power supply 24 - 130 Vac/DC (+10% - 15%)
Frequency 50 - 60 Hz
Power consumption (normal operation) 1,8 W
Peak starting current 0,20 A x 0,5 sec (230V)
0,20 A x 30 sec (24V)
Initial opening (NC) or closing (NO) time (power ON) 230V 75 s
Final opening (NC) or closing (NO) time (power ON) 3 min
Initial opening (NC) or closing (NO) time (power ON) 24V 3 min
Final opening (NC) or closing (NO) time (power ON) 5 min
Actuator stroke max. 3,5 mm
Valve stroke 2,5 mm
Protection class IP54 - EN60529
Electrical protection class II
Safety (contamination level) 2
Cable length 1 m
2 pole x 0,5 mm2
4 pole x 0,5 mm2
Operation temperature limit 0 - 50 °C
Storage temperature limit -25 - 60 °C
Mean temperature limit Max. 110 °C
Nominal closing force (power OFF) (NC) 100 N (±10%)
Nominal closing force (power OFF) (NO) 80N (±10%)
Auxiliary microswitch (4 pole model) Max. 700 mA - 250 V ~ (c.a.)
Cover RAL 9016 Polyamide +30 F.G. self estinguishing
Valve connection Threaded ring nut M30x1,5
Normally Close Section Transparent zone

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ON/OFF ELECTROTHERMIC ACTUATORS
Re-order no.67A-0041-IT/1-UK-09-14-Rev.0
Watts Industries Italia S.r.l.
Via Brenno, 21 - 20853 Biassono (MB), Italia
Tel. : [phone] - Fax : [phone]
e-mail : [email protected]
www.wattsindustries.com
The descriptions and photographs contained in this product specification sheet are supplied by way of information only and are not binding.
Watts Industries reserves the right to carry out any technical and design improvements to its products without prior notice.
22CX 2-wires
Electrical wire connections
Overall dimensions (mm)
(Blue)
(Brown)
Thermostat
(Blue)
(Black)
(Brown)
(Brown)
(Brown)
Thermostat
Pump
Relay
1) Remove handle or cap from the valve body.
2) Place the actuator and manually tighten the ring nut of the actuator onto the
body valve.
DO NOT use pipe wrenches, spanners or similar.
3) Connect electrical wiring.
Important maintenance notes
Do not remove the cable. Opening the 22CX series actuator will cause
irreparable damage to the device.
Faulty actuators must be replaced as complete sets.
Warning
IP54 is for horizontally or vertically mounting.
Mounting
(Grey)
(Blue)
(Blue)
22CX 4-wires
40.5 49.5
52
M30 x 1,5