FUTURE® S AIR HANDLING UNIT
OPERATION AND MAINTENANCE
INSTRUCTIONS
15 December 2020
Ver 1.7 (We reserve the right to changes without prior notice)
30
8 Electric automation
The unit’s electric automation equipment is selected during the dimensioning of the device. Check the
equipment included in the unit with the product code key. The product code is available in the technical
printout delivered with the unit documentation and the code key can be found in Section 1.7 “Future® S
series equipment and product code key” of this manual.
8.1 Safety
WARNING
Observe general and section-specific safety instructions
WARNING
Electrical connections must be made by a qualified and authorised electrician only. The
condition of the cables connected to the unit must be inspected visually before making any
electrical connections and starting the unit. Before starting any installation and
maintenance work on the electrical device, make absolutely sure that the device is de-
energised. After switching off the power, wait at least five minutes to allow dangerous
voltages to discharge from the devices. Electrical devices should be inspected every six
months. Any deficiencies and faults must be
fixed immediately.
CAUTION
The protective devices for the electric components must be dimensioned correctly in order
to guarantee safe use of the unit.
8.2 Commissioning and maintenance
Before unit commissioning, the power supply and the possible building automation control cable must be
connected to the unit. The S1800 model is supplied in modules and the electrical and control cables between
the modules are connected with the marked quick couplers included in the equipment delivery. After
installation, field check must be carried out to ensure that the connections have been correctly made. Marked
pressure hose connections between the modules are also made on site.
The unit’s ~400 V (L1, L2, L3, N and PE, max cable diameter 6mm2) power supply cable and possible building
automation control cable are connected to the switchboard through the Ø30 mm penetrations on the upper
part of the machine as shown in Figure 8.2.2 through the switchboard casing’s multi flange to the
switchboard’s X1:L1, L2, L3, N and PE terminal blocks (refer to Koja’s separate electric diagram).
Note! If the unit is supplied with an optional safety switch, the distribution board’s power supply is connected
directly to the safety switch terminals. More specific electrical data on the unit is available on Koja’s technical
printout.
Summary of Contents for Future S
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