Installation Information; Check Points - Panasonic CU-2S18NBU-1 Service Manual

9. Installation Information

9.1

Check Points

QUICK GUIDE
PIPING & ELECTRICAL SPECIFICATION
Indoor(ID) & Outdoor(OD) units: Capacity
Possible Combination Patterns (Btu/h)
Outdoor (OD): CU-2S18NBU-1
Indoor (ID): 2 UNITS OF
CS-S9NKUW-1
Outdoor (OD): CU-2S18NBU-1
Indoor (ID): 2 UNITS OF
16700
CS-S12NKUW-1
Outdoor (OD): CU-2S18NBU-1
Indoor (ID): 1 UNIT OF
CS-S9NKUW-1
+ 1 UNIT OF CS-S12NKUW-1
Example:
If total piping length of all installed indoor units is at 68.6 ft, the quantity of additional refrigerant should be 0.6 oz .......... (68.6 – 65.6) ft x 0.2 oz/ ft
= 0.6 oz.
Piping size
Refrigerant
Gas Liquid
ø3/8" ø1/4"
R410A
(ø9.52mm) (ø6.35mm)
Min. pipe Max.
Standard
Max. length for from
pipe
Elevation each ID OD to
length
unit each ID
24.6 ft 49.2 ft 9.8 ft 82.0 ft
14
Min. total
Max. pipe
Additional Power
total length for
refrigerant supply
length additional
gas
208/230V
60 Hz
164.0 ft 65.6 ft 0.2 oz / ft
MCA 20A
MOP 25A
Power OD-ID
supply connection
wire size wire size
AWG12 AWG16