Stulz EC Tower ECD 91 - 7.9 Connecting the outdoor unit to the EC Tower

55 © STULZ GmbH – all rights reserved EN/01.2019/G22
EC TOWER TECHNICAL MANUAL
Make sure that electronic components without ESD protection are not touched.
ESD: electrostatic discharge
7.9 Connecting the outdoor unit to the EC Tower
DANGER
Danger of death from electric shock!
• Make sure that the electrical supply is off.
• Always have electric cables connected by specialist personnel only.
• Make sure that the air conditioning unit is effectively grounded.
• Make sure that the outdoor unit receives its electrical supply via the indoor unit.
• if the outdoor unit is installed outside the eld of vision of the indoor unit, install a repair switch
on the outdoor unit (see “7.8.2 Electrical wiring diagram“ on page 53).
7.9.1 Connecting the outdoor unit electrical supply to junction box 1
Pay attention to the electrical wiring diagram (see section “7.8.2 Electrical wiring diagram“ on page 53).
Connections for size 1 - ECD/U 91 Connections for size 2 - ECD/U 181/251
No. Description
1
Control fuse F10
2
Control fuse F41
3
Terminal strip X1
4
Master switch Q01
5
Terminal strip X0
6
EC Tower
7
Door of junction box 1
No. Description
1
Control fuse F10
2
Circuit-breaker F41
3
Terminal strip X1
4
Master switch Q01
5
Terminal strip X0
6
EC Tower
7
Door of junction box 1
7
6
2
3
4
1
5
6
7
3
45
2
1