elecTrIcal connecTIons
10
ZR10-D controller
•
Installation and operating instructions
4
electrical connections
Danger
exposed electrical components.
'Live' parts can cause electric shock and injury!
► Before starting any work on electrical installations, disconnect every unit concerned from its
power supply.
► Observe the speciications of protection class II during installing of power cables.
► Power cables and controller's cables must be laid separately.
beWare
Inadequate cable cross-section.
Excessive voltage drop inside the fan bus!
►
Only use these cable cross-sections for the electrical connection:
Fan bus:
Minimum 0.75 mm
2
Supply lines:
Minimum 1.5 mm
2
noTe
Connect all fans radially and lay cables with lexibility. A distributor is available optional.
Observe the cable lengths (maximum distances) between the controller and the last connected
ventilation unit:
• 4 iV12-Smart / iV14 ventilation units: 30 m ( star shaped)
• 4 iV12-Smart / iV14 ventilation units: 10 m (one after another)
•
2 iV12-Smart / iV14 ventilation units: 20 m (one after another)
• 2 iV-Twin / iV25 ventilation units:
20 m (star shaped)
• 2 iV-Twin / iV25 ventilation units:
10 m (one after another)
connector assignment
1
2
3
round cable
(1-wire per wire end ferrule)
Fig. 5: Colour sequences
1 White round cable
2
Green round cable
3
Brown round cable
