17
INSTALLATION OPERATIONS AND MAINTENANCE MANUAL - VORT NRG MEGA-R SERIES
Water control 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).
Hot water coil (internal)
The hot water 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.
Cold water coil (internal)
The coil is manufactured with copper pipes thickness 0,40 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 thermal performances different from the standard ones, when previously agreed with the factory. The cooling coil
section is supplied complete with condensate drain pan with side water discharge.
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.
Air damper with actuator
This is installed on board the unit and operate to exclude the fresh air intake and/or the room exhaust 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.
Return side sound attenuator
The sound attenuator is made of mineral wool, thickness 100/200 mm, density 90 kg/m
3
, protected by a fabric veil that
prevents any risk of fraying of the mineral wool even at high air velocities.
The mineral wool is contained in a galvanised frame with a galvanised steel microstretched retaining mesh.
The sound-absorbing material is class M0. It is supplied in a dedicate section with the same sizes and features of the main unit
and it will be fixed with a dedicated installation kit supplied with it.
Supply side sound attenuator
The sound attenuator is made of mineral wool, thickness 100/200 mm, density 90 kg/m
3
, protected by a fabric veil that
prevents any risk of fraying of the mineral wool even at high air velocities.
The mineral wool is contained in a galvanised frame with a galvanised steel microstretched retaining mesh.
The sound-absorbing material is class M0. It is supplied in a dedicate section with the same sizes and features of the main unit
and it will be fixed with a dedicated installation kit supplied with it.
CO
2
probe
ECO version units can be equipped with air quality CO
2
probe. This accessory is installed and wired in the factory.
If it's installed on the return air duct it allows to determine the quantity of carbon dioxide present in the environment,
increasing the quantity of external air to dilute its content.
ATTENTION:
The CO
2
probe is not available in PLUS and TOP versions.
