11
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.  
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UNIT NOMENCLATURE
ARN U 05 3 SJ A
Generation
2 = Second
4 = Fourth
A = Second, Revision A
Electrical Ratings 
3 = 208–230V/60Hz/1Ph
05 = 5 
07 = 7  
09 = 9  
12 = 12 
15 = 15 
18 = 18 
24 = 24 
28 = 28 
30 = 30 
36 = 36 
42 = 42 
48 = 48 
54 = 54 
76 = 76 
96 = 96 
Type
U = DC Inverter Heat Pump 
Family
ARN = Multi V Indoor Unit
(Refrigerant R410A)
Feature
A, C, D, L, R = Standard 
G = Low Static 
U = Uncased 
Indoor Unit Capacity (Mbh)
Model
4
B8 = Ducted (high static) 
BH = Ducted (high static) 
CE = Floor Standing (small frame) 
CF = Floor Standing (large frame) 
L1 = Ducted (low static) 
L2 = Ducted (low static) 
L3 = Ducted (low static) 
M2 = Ducted (high static) 
M3 = Ducted (high static)  
NJ = Vertical/Horizontal Air Handling 
Unit 
NK = Vertical/Horizontal Air Handling 
Unit  
SF = Wall Mounted / Art Cool™  
Gallery 
SJ = Wall Mounted / Art Cool Mirror 
SK = Wall Mounted / Art Cool Mirror 
SV = Wall Mounted / Standard 
TT = 1-Way Ceiling Cassette 
TU = 1-Way Ceiling Cassette 
TS = 2-Way Ceiling Cassette 
TM = 4-Way Ceiling Cassette  
TN = 4-Way Ceiling Cassette  
TQ = 4-Way Ceiling Cassette  
TR = 4-Way Ceiling Cassette