Use and Care Manual

8
Take 2 pieces of 18 AWG wire for the communication lines between indoor
and outdoor unit, with a maximum length of 50m(164feet). Select the appropriate line
length as per the actual installation conditions. The communication wire can not be twisted
together. For t
he
smaller units (≤30K), it’s recommended to use up to a maximum of 20m (66feet)
long communication line.
Take 2 pieces of 18 AWG wire for the communication lines between
the wired controller and the indoor unit.
Select
the appropriate wire length as per the actual installation conditions. The
communication lines can not be twisted together. It’s recommended to use up to a maximum 8m(26feet)
long communication line.
The wire size of the communication line should be no less than 18 AWG.
4 Installation of the Unit
4.1 Installation of the Indoor Unit
4.1.1 Indoor unit dimension
18K:
G
B
E
H
F
Bottom face of ceiling
I
J
Table 4.1 Unit: mm(inch)
Item
Model
A B C D E F G H I J
UMAT18HP230V1AC 
670
(26-3/8)
596
(23-1/2)
592
(23-1/4))
575
(22-5/8))
145
(5-3/4))
240
(9-1/2)
665
(26-1/8)
236
(9-1/4)
575
(22-5/8)
505
(19-7/8)
U-match Series Cassette Type Unit
④ 
③
.
②
.
.