Service manual

7
Indoor
unit
w Max. Height
difference 25ft.
Outdoor unit
Refrigerant Piping
Max.length
A
w Height difference should be within
25ft. regardless of which unit,
indoor or outdoor position is high.
MAX. HEIGHT DIFFERENCE
Outside
diameter
Minimum
Wall
thickness
Outside
diameter
Minimum
Wall
thickness
MSZ09UN
MSZ12UN
MUZ09UN
MUZ12UN
Additional piping
Max. length : ft.
A
49
Gas
Piping size : in. Length of connecting pipe : in.
Liquid
Indoor unit
Outdoor unit
Model
Gas :
Liquid :
0
0
Gas :
Liquid :
16-15/16
19-11/16
[ 3/8
[ 1/2
[ 1/4
0.0285
0.0265
MAX. REFRIGERANT PIPING LENGTH
Test condition
SEER
(Cooling)
HSPF
(Heating)
ARI
Mode
"A" Cooling Steady State
at rated compressor Speed
"B-2" Cooling Steady State
at rated compressor Speed
"B-1" Cooling Steady State
at minimum compressor Speed
Low ambient Cooling Steady State
at minimum compressor Speed
Intermediate Cooling Steady State
At Intermediate compressor Speed
❈5
Standard Rating-Heating
at rated compressor Speed
Low temperature Heating
at rated compressor Speed
Max temperature Heating
at minimum compressor Speed
High temperature Heating
at minimum compressor Speed
Frost Accumulation
at rated compressor Speed
Test
Indoor air condition Outdoor air condition
Dry bulb
Wet bulb
Dry bulb
Wet bulb
80
80
80
80
80
70
70
70
70
70
70
67
67
67
67
67
60
60
60
60
60
60
Frost Accumulation
at Intermediate compressor Speed
❈5
95
82
82
67
87
47
17
62
47
35
35
(75)
(65)
(65)
(53.5)
(69)
43
15
56.5
43
33
33
❈5 : At Intermediate compressor Speed
=("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed".
(Unit : [˚F])
❈3, ❈4
OB297--1.qxp 04.2.4 4:19 PM Page 7