Electrical panel
The electrical panel is directly accessible from the outside by means of a panel with 1/4 turn closures. It
includes a connection terminal strip, protectors, electronic boards and sensors, power contactors, switch‐
ing relays, phase control relay and transfer for the 24V control circuit.
The electrical panel for the unit has an IP44 level of protection and is compliant with current European
regulations.
Sequence and phase fault sensor relay
The unit is fitted with a sequence and phase fault sensor: where a non R-S-T phase sequence is detected
or where, once the unit is running, there is a phase fault, the sensor will disconnect the power supply to
the main board of the unit, preventing it from starting.
Construction and rust protection features
All metal parts of the structure are made of galvanised aluminium steel plate.
The outdoor parts are treated with oven-polymerised polyester paint (RAL9002), guaranteeing a quality
finish that lasts for many years (800 H.N.S. according to DIN 50021).
Unit base (VAC-VAH models)
The base of the unit is made with fixed beams that provide a solid foundation. Openings on the front of
these beams can be used to attach a crane for hoisting the unit into position during the installation
process.
The beams also have openings on the bottom to place the unit on dampers, if required.
Service connections
For easier electricity connections with a minimal amount of work, electrical and control cables can be
pulled through the front of the unit.
Noise emissions
All units operate with extremely low noise emission levels. The compressors have anti-vibration mounts
as well as vertical discharge fans that direct noise upwards, away from surrounding buildings and prop‐
erty.
Thermal/Acoustic Insulation
The inside of the evaporator area and the heating supply/accessory area are fully insulated. The insu‐
lation is 5 mm thick.
Indoor electric resistors (Optional)
Exposed cord-type for fast heat dissipation, avoiding temperature inertia that could affect the compo‐
nents.
User manual
1
General description of the unit
1.1
5
