Toyotomi UTN-18AP User Manual page 106

3. Pretightening the union nut with hand.
4. Tighten the union nut with torque wrench by referring to the sheet below.
Step fi ve: Connect outdoor electric wire
1. Remove the wire clip; connect the power connection wire and signal control
wire (only for cooling and heating unit ) to the wiring terminal according to
the color; fi x them with screws.
9K,12K,18K
17Κ, 21Κ
Yellow
green
Indoor unit connection
Hex nut
diameter
1/4''
3/8''
1/2''
5/8''
3/4''
Yellow
green
Brown (Black)
Blue
Blue Black Brown Yellow
Green
Indoor unit connection
N(1) 2 L(3)
Brown
Blue Black Brown Blue
(Black)
N L
Tightening
torque (Ν-m)
15~20
30~40
45~55
60~65
70~75
L
N
POWER
24Κ
N(1)
Yellow
-
Yellow
Blue
green
green
POWER
Indoor unit connection
106
pipe joint
union nut
23 LN
Brown
Black Brown Blue
(Black)
LN
POWER
Yellow green
GB