CIAT COMFORT LINE, Instruction Manual

Page: 26 / 32

The leakage current on all our comfort units conforms to the requirements of IEC 60335-2-40 (Safety of household
and similar electrical appliances):
■ Complete comfort unit (with electric heaters) equipped with a multi-speed motor: maximum leakage current = 2
mA.
■ Complete comfort unit (with electric heaters) equipped with an HEE motor (brushless technology): maximum
leakage current = 4,5 mA.
Electromagnetic compatibility in accordance with Emission standard 61000-6-3 EN 550141-1, tool class
and Immunity 61000-6-1 (Residential, commercial and light industry class).
The unit's compliance with the above standards does not guarantee the compliance of the
installation as a whole (several other factors not relating to the unit may be involved). As a result,
the installer must observe the applicable recommendations in order to guarantee compliance.
General safety instructions for units with electric elements:
■ The rotation speed of the HEE motor must not be below 550 rpm for size 0 and 400 rpm for sizes 1 to 6.
■ The operation of the electric heater must be fan-controlled. Power to the electrical heaters should be cut and
the fan delay activated whenever the fan motor assembly is stopped intentionally or unintentionally.
■ Ensure that the type of control chosen when the system is completely shut down allows post ventilation of the
comfort unit for at least 2 minutes.
To ensure the hot water and electrical heaters work correctly when used simultaneously, we recommend only low
temperature settings are used to ensure our safety devices operate correctly.
For size 0, a double safety feature protects units equipped with heaters from accidental overheating:
- The integrated self hold safety thermostat with auto reset (Fig.12, a).
- The thermo fuse (Fig.12, a).
For sizes 1 to 6, two thermostats protect units equipped with heaters from accidental overheating:
- The manual temperature limiter (fig.12, b).
- The automatic temperature limiter (fig.12, c) always located next to the electrics box.
Do not reset these thermostats until the potential causes of the overheating have been checked:
- Turning on the unit without the fan.
- Filter partially clogged.
- Coil and fan stopped simultaneously by control.
Never connect several fan coil unit motors in parallel on the same thermostat.
For size 0, if the thermo fuse is blown, then the electrical heater must be replaced.
■ Remove the fan motor assembly (see the section "Removing the fan motor assembly").
■ Disconnect the faston terminals which make up the electrical heater's wiring loom from the heater.
■ Undo the screws on the electrical heater (Fig.12, d).
Perform these steps in reverse to fit the new electrical heater.
For sizes 1 to 6, the unit can be manually reset by inserting a screwdriver in the hole (fig.12, e).
4 - NSTALLATION AND CONNECTIONS
COMFORT LINE TM EN-26