Icma 377 | Two-way fan coil valve – Flat seat – Equipped with actuator

FUNCTION

Fan coil shut-off valves are used to control the flow of the
heat transfer fluid of heating and air conditioning systems.
The three sizes DN15, DN20, DN25 are provided with
threaded male thread, conical seat or flat seat.
The fan coil shut-off valves are designed for the installation
of our electrothermal controls, thus guaranteeing automatic
interception of the thermal fluid.
Each valve kit is provided with a knob for manual opening /
closing of the valve itself.

OPERATION
The fan coil shut-off valves are used in heating and air conditioning systems for controlling the flow of the
heat transfer fluid.
The configuration of our fan coil valves is NORMALLY OPEN, the partial or total closing of the valves is
done by pressing the steel pin in the top, this pin is integral with the valve internal shutter and has a max
stroke of 3.5 mm.
It is possible to control the valves manually or automatically:
– MANUAL: To manually control the fan coil valves, simply use the white knob supplied with each valve.
Turning clockwise the dial gradually closes the passage of the valves until they are fully closed.
– AUTOMATIC: To control the fan coil valves automatically, one of our electrothermal commands must be
installed.
We have a wide range of electrothermal controls:
• Electrothermic controls on / off
• Electrothermic controls with microswitch for fine signal for clean signal
(For the choice of suitable electrothermal control and for technical specifications refer to the specific data
sheet).
All our fan coil valves are ready to receive our electrothermal commands, the operations to be carried out are
simple and fast.
Simply remove the white dial from the valve by rotating it counterclockwise and insert one of our
electrothermic commands in place of it by screwing the threaded nut that is in its lower part on the valve
thread until it locks.
In this way it is possible to control the opening and closing of the valve with a simple electrical signal that
can be sent by an ambient thermostat or by a control unit.
With the installation of an electrothermal control in idle mode (non-powered control) the valve can be
NORMALLY CLOSED or NORMALLY OPEN depending on the type of control selected.

Fan coil valves
Useful fluids: Water and glycol solutions
Maximum percentage of glycol: 50%
Maximum operating pressure: 10 bar
Maximum fluid temperature: 110 ° C
Minimum fluid temperature: 4 ° C
Valve travel stroke: 3.5 mm
Connection for actuators: M30x1.5

Electro-thermical control devices
Articles: 980 NC 979 NC
Type: Without Micro-switch With Micro-switch
Tension: 24V / 230V 24V / 230V
Frequency: 50÷60 Hz 50÷60 Hz
Starting Current: 0.2 A (230V) / 0.3 A (24V) 0.2 A (230V) / 0.3 A (24V)
Working Current: 8 mA (230V) / 70 mA (24V) 8 mA (230V) / 70 mA (24V)
Working power absorbed: 2W 2W
Movement type: Linear Linear
Actuator max trail: 5 mm 5 mm
ICMA valve trail: 3,5 mm 3,5 mm
Starting opening time: ca 90 sec ca 90 sec
Fully opening time: ca 3 min ca 3 min
Fully closing time: ca 4 min ca 4 min
Dynamic power: 100 N 100 N
Working temperature: 0°C ÷ 50°C 0°C ÷ 50°C
Stock temperature: -25°C ÷ +60°C -25°C ÷ +60°C
Thread connection: M28x1,5 / M30x1,5 M28x1,5 / M30x1,5
Connection cable: Flame resistant – Bipolar Flame resistant – Quadripolar
Connection cable lenght: 2×0,5 mm² L= 1 m 4×0,35 mm² L= 1 m
Protection grade: IP 53 IP 53
Electrical insulation class: Class II Class II