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INSTALLATION OPERATIONS AND MAINTENANCE MANUAL - RXC/Hi SERIES
Electric re-heating coil (internal)
All units may be equipped with an internal re-heating electric coil, made up of armoured steel electric heaters, supplied
complete with PWM control system, safety thermostat already wired and installed on board.
Hot water coil (external)
The hot water coils are supplied in a dedicated section to be installed in the supply air-flow line. The casing has the same sizes
and features of the main unit and it is fixed with a dedicated installation kit supplied with it. The coil is manufactured with
copper pipes thickness 0,4 mm and aluminium fins thickness 0,11 mm. The pipes are mechanically expanded in the aluminium
fins to increase the thermal exchange rate. On request, it is possible to install coils with different capacities from the standard
ones, when previously agreed with the factory.
3 way modulating valve
It consists of a kit including the 3-way valve for the control of the water flow, to be combined with the hot and/or cold water
coil, and its modulating electric actuator. Connection and fitting devices not included (to be arrange for by the installer).
Air damper with actuator
This is installed on board the unit and operate to exclude the fresh air intake and/or the room return air flow. This option is
particularly useful in areas with very cold winter temperatures, where it is necessary to avoid dangerous self-induced cold
air flows by the installation itself, during the stand-by period of the unit, with the risk of freezing the water contained in the
water coils, if any. The damper is controlled by On/Off actuator for the opening or the closing, or with return closing spring.
Feet for floor installation
Galvanized steel fixed feet kit for installing the unit on the floor.
Return side sound attenuator
The sound attenuator consists of a cylindrical section made in galvanized steel sheet, containing a mineral wool sound
proofing material covered with glass wool jacket and perforated galvanized steel sheet containment. The soundproofing
material is class M0. The construction avoids any risk of mineral wool fraying even at high air speeds. The cylindrical section
is fixed to the unit by screws.
Supply side sound attenuator
The sound attenuator consists of a cylindrical section made in galvanized steel sheet, containing a mineral wool sound
proofing material covered with glass wool jacket and perforated galvanized steel sheet containment. The soundproofing
material is class M0. The construction avoids any risk of mineral wool fraying even at high air speeds. The cylindrical section
is fixed to the unit by screws.
