Electrical Connections - Lennox FLATAIR KFC Series Installation And Operating Manual

2.- INSTALLATION
2.8.- ELECTRICAL CONNECTION
- BEFORE MAKING ANY ELECTRICAL CONNECTIONS, BE SURE THAT ALL CIRCUIT BREAKERS ARE
OPEN.
- IN ORDER TO CARRY OUT THE ELECTRICAL CONNECTIONS, FOLLOW THE ELECTRICAL DIAGRAM
SUPPLIED WITH THE UNIT.
Power Supply
1
2
Connection indoor-outdoor unit
Electrical heater power supply
3
4 Connection to the Control Panel.
TABLE 6: CABLES SELECTION
POWER SUPPLY
230V SINGLE PHASE
UNITS
PE N L
X1
1N ~ 230V - 50 Hz + PE
POWER SUPPLY
230V THREE-PHASE
UNITS
MODEL
L3
PE L1 L2
X1
3 ~ 230V - 50 Hz + PE
POWER SUPPLY
400V THREE-
PHASE UNITS
PE L1 L2 L3 N
X1
3N ~ 400V - 50 Hz + PE
(*) To install with LFXO, LFC, LFH indoor unit, and whiout electrical heater
- The sections have been calculated for a length no longer than 50m and a voltage drop of 10V.
Do not start the unit if the drop is greater than this.
N o . O F C A B L E S x S E C T I O N ( m m )
1
UNIT
MODEL
Power supply
WITHOUT
electrical heater.
10 3 x 4
1
UNIT
Power supply
WITHOUT
electrical heater.
10 4 x 4
12
4 x 4
16
4 x 6
4 x 10
22
4 x 10
24
4 x 10
28
4 x 16
30
N o . O F C A B L E S x S E C T I O N ( m m )
1
UNIT
MODEL Power supply
WITHOUT
electrical heater.
10 5 x 2,5
12 5 x 2,5
16 5 x 4
22 5 x 4
24 5 x 4
28 5 x 4
30 5 x 6
2
Indoor
Section
3
1 2
Connection
Power supply
outdoor-indoor unit
WITH electrical
WITHOUT
heater.
electrical heater.
3 x 16 5 x 1,5
N o . O F C A B L E S x S E C T I O N ( m m )
2
1
Connection
Power supply
outdoor-indoor unit
WITH electrical
WITHOUT
heater.
electrical heater.
5 x 1,5
4 x 10
4 x 10
5 x 1,5
4 x 16
4 x 2,5 + 2 x 1
4 x 16
4 x 2,5 + 2 x 1
4 x 25
4 x 2,5 + 2 x 1
4 x 25
4 x 2,5 + 2 x 1
4 x 25
4 x 2,5 + 2 x 1
2
1
Connection
Power supply
outdoor-indoor unit
WITH electrical
WITHOUT
heater.
electrical heater.
5 x 4 5 x 1,5
5 x 4 5 x 1,5
5 x 6 4 x 1,5 + 2 x 1
5 x 10 4 x 1,5 + 2 x 1
5 x 10 4 x 1,5 + 2 x 1
5 x 10 4 x 1,5 + 2 x 1
5 x 10 4 x 1,5 + 2 x 1
21
Outdoor
4
Section
1
Electronic
Card
2
3
4
Electrical heater Shielded
power supply
Cable
3 x 4 + 2 x 1 2 x 1
2
3
4
Electrical heater Shielded
power supply
Cable
4 x 4 + 2 x 1
2 x 1
2 x 1
4 x 4 + 2 x 1
4 x 4 + 2 x 1
2 x 1
2 x 1
4 x 4 + 2 x 1
2 x 1
4 x 4 + 2 x 1
4 x 4 + 2 x 1 2 x 1
4 x 4 + 2 x 1 2 x 1
2
3
4
Electrical heater Shielded
power supply
Cable
4 x 1,5 + 2 x 1
2 x 1
2 x 1
4 x 1,5 + 2 x 1
4 x 1,5 + 2 x 1 2 x 1
4 x 1,5 + 2 x 1
2 x 1
4 x 1,5 + 2 x 1 2 x 1
4 x 1,5 + 2 x 1 2 x 1
4 x 1,5 + 2 x 1 2 x 1
Control
Panel