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1.11.5 Wiring diagrams
Electrical installation YLCA / YLHA PLUS 5 to 27
A
B
C
a1
a3
b
c
d
e
f
A
YLCA terminal strip
b
Flow Switch (only in
units without hydraulic
group)
B
Outdoor terminal strip
c
General alarm (voltage-
free inverter contact
max. 2A resist. A 230
Vac)
C
Main switch
d
Remote ON / OFF
switch
a1
Supply (200 ‑ 1+ N ‑ ph
‑ 50 Hz)
(single-phase units)
e
Remote COOL / HEAT
switch
CLOSED = COOL
OPEN = HEAT
(YLHA units only)
a3
Supply (400 ‑ 3 + N ‑
ph ‑ 50 Hz)
(three-phase units)
f
Auxiliary heater
□
Terminal strips
YLCA / YLHA PLUS
◊
Voltage-free terminal strip contact
YLCA / YLHA PLUS
Ø
Outdoor unit terminals
- ‑ ‑
Client's electrical installation
○
230 Vac terminal
C A U T I O N
The cable used for the unit power supply must be H05 RN ‑ F
Technical Information
1
Instructions for installation and connection of the unit 1.11
45
Summary of Contents for YLCA
Page 4: ...1 Technical Information ...
Page 68: ...2 Electric circuit diagrams ...