300350-04-12
Installing the thermostatic head with remote sensor or electro-thermal control (IC-BOX 1/5 models)
Attention:
Prepare the necessary space in the wall for the passage of the remote sensor of the thermostatic head or the electrical cable of the electro-thermal head.
Remove the pre-cut dowel located to the right of the upper side of the recessed box before installing the device.
The IC-BOX 1 and 5 models have a thermostatic head screw with a M30 x 1.5 thread, suited for installing a remote sensor control.
• In case of a thermostatic head with a remote sensor and a knob mounted on the valve (e.g. IVAR T 3010 and T 5010 heads), remove the protective cap, fully open
the head to facilitate the tightening of the ring nut, install the head screw and fully screw in the ring nut by hand. Pass the capillary through the groove caused by
the removal of the dowel on the upper right and through the dedicated space made in the wall, and then fix the remote sensor to the wall as required by the design
specifications.
• In case of a thermostatic head with remote sensor and wall-mounted (e.g. IVAR T 3020 and T 5020) or built-in control knob (e.g. IVAR T 3030 and T 5030), remove
the protective cap, position the end of the capillary equipped with a ring nut on the screw head, then fully screw down the ring nut. Pass the capillary through the
groove caused by the removal of the dowel on the upper right and through the dedicated space made in the wall, and then fix the knob with sensor to the recessed
wall as required by the design specifications.
• In case of electro-thermal control (e.g. IVAR TE 3040, TE 3041, TE 3050, TE 3051), remove the cap from the head screw and, if necessary, screw on the adapter
ring nut, then install the electro-thermal head as specified by the manufacturer. Pass the electrical cable of the head through the groove caused by the removal of
the dowel on the upper right and through the dedicated space made in the wall, then carry out the electrical connection to the thermostat or chronothermostat as
required by the design specifications.
Installing the thermostatic head with built-in sensor(IC-BOX 2/4 models)
Attention:
Remove the dowel from the cover to leave the necessary space for the thermostatic head. The diameter of the round hole thus obtained is 50mm: ensure
that the thermostatic head chosen does not have a diameter greater than this value.
The IC-BOX 2 and 4 models have a thermostatic head screw with a M30 x 1.5 thread, suited for installing a control with a built-in sensor (e.g. IVAR T 3000 and T 5000).
As for normal thermostatic head installations, do not perform installations in which the head is behind curtains, under a window sill or, in general, in positions that are
not representative of the room temperature. To install the thermostatic head, remove the protective cap, fully open the head to facilitate the tightening the ring nut,
mount the head on the head screw and fully tighten the ring nut by hand.
Air vent
All the IC-BOX models feature a manual air vent valve. The air purge operation must be carried out with water circulating: check that the flow is not intercepted by
any of the regulatory components present (return temperature controller, thermostatic head, electro-thermal control or lockshield) or other components upstream or
downstream of the IC-BOX To carry out the air purge, unscrew the white resin handwheel until a steady jet of water, and no longer air, comes out of the ejection hole.
Then close the handwheel by turning it clockwise.
Setting the return temperature (IC-BOX 1/2/3 models)
Attention:
The circuit on the floor and the relative adjustments must be made in compliance with EN 1264. Remember that, according to part 4, the temperature of
the cement screed around the heating pipes must not exceed 55°C and that, according to parts 2 and 3, the temperature of the floor surface must not exceed 29°C
in the occupied areas and 35°C in the peripheral areas. Do not exceed the limits of the materials used (pipes, coverings, etc.) as specified by the manufacturers.
To set the return temperature in the IC-BOX 1, 2 or 3 models, use the dedicated knob according to the following table.
0
1
2
3
4
15°
25°
31°
39°
45°
The selection of the return temperature depends on the delivery temperature: in general, it is recommended that average temperatures of 35-38 °C not be exceeded.
Example: with a delivery temperature of 50°C it is recommended that the return temperature be set at 25°C. When the temperature is set to 15°C the circulation of a
minimum flow of water is permitted to prevent the pipes from freezing.
Balancing the circuit (IC-BOX 4/5 models)
Attention:
To balance the system with this method you must know the design flow rate and the hydraulic features of the circuit powered by the IC-BOX.
Room temperature adjustment in IC-BOX models 4 and 5 can only be done via thermostatic head. Depending on the design requirements, it may be necessary to choke
the device using the dedicated lockshield. To determine the number of revolutions necessary starting from the closing position, proceed as follows:
1.
Make note of the drop in pressure on the circuit least favourable to the design flow rate, from among those connected parallelly to the circuit powered by
IC-BOX;
2.
From this value, subtract the pressure drop value associated with the single circuit powered by the IC-BOX (without calculating the pressure drop introduced
by IC-BOX);
3.
The pressure drop value obtained in step 2 corresponds to the pressure drop to be set on the IC-BOX as the design flow rate obtained via the lockshield: use
the table in Fig. 3 to obtain the number of revolutions starting from the closure position.
a.
Graph method: consult the graph in Fig. 3 and using the pressure drop value obtained in step 2 and the design flow rate value,
identify the nearest Kv curve, then obtain, from the table in Fig. 3 , the corresponding value of the number of revolutions required
for opening.
b.
Formula: obtain the kv value from the formula:
then obtain from the table in Fig. 3 the corresponding value of the number of revolutions required.
Once the number of closure revolutions has been determined, carry out balancing according to the following procedure:
1.
Use a screwdriver to unscrew and remove the notched grub screw located inside the hexagonal socket;
2.
Close the adjustment head screw using a 5 mm Allen key (Fig. 4a);
3.
Fully re-tighten the grub screw. Mark with an “x” the reference point for adjustment (Fig. 4b);
4.
Align the screwdriver with the “x” and open with the appropriate number of revolutions (Fig. 4c), according to the kava diagram in Fig. 3;
5.
Open the head screw until it reaches its limit stop (Fig. 4d).
kv
=
design flow rate [mc/h]
pressure drop [bar] (point 2)
Содержание IC-BOX 1
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