Hoval RoofVent CON-9, Design Handbook

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7.3 Electrical installation
Caution
Danger from electric current. Electrical installation
must be carried out by a qualified electrician!
■ Comply with all relevant legislation (e.g. EN 60204-1).
■ For long supply lines, select cable cross-sections in
accordance with the technical regulations.
■ Carry out electrical installation in accordance with the
wiring diagram (for wiring within the unit, see Fig. F11).
■ Install the system bus for the control systems separately
from the mains cables.
■ Establish plug connections from the Air-Injector to the
combi box and from the combi box (inside) to the roof unit.
■ Wire the actuator of the ER/bypass damper 2 to the
DigiUnit terminal box.
■ Establish plug connections of suction line and injection
line temperature sensors.
■ Make sure there is onsite overload protection equipment
for the mains connection line of the zone control panel
(short circuit resistance 10 kA).
Communication box
DigiUnit terminal box with
isolation switch RoofVent
®
Isolation switch, heat pump
Switch-over heating/cooling
Plug connections, temperature
sensors
Power supply, heat pump
Communication line, heat pump
Actuator of ER/bypass damper 2
Plug connection, actuator
Cable feedthroughs and plug
connection, Air-Injector
Power supply, RoofVent
®
unit
Bus cable
Temperature sensor, suction line
Temperature sensor, injection line
Connection box
Fig. F11: Wiring in unit
RoofVent
®
twin pump
Transport and installation