Installation Information; Check Points - Panasonic CU-2E18NBU Service Manual

9. Installation Information

9.1

Check Points

QUICK GUIDE PIPING AND ELECTRICAL SPECIFICATION
Indoor (ID) &
Outdoor (OD)
Capacity Refrige-
units: Possible
(Btu/h)
Combination
Patterns
Outdoor (OD):
CU-2E18NBU
Indoor (ID): 2
UNITS OF CS-
E9NKUAW
Outdoor (OD):
CU-2E18NBU
Indoor (ID): 2
UNITS OF CS- 16700 R410A
E12NKUAW
Outdoor (OD):
CU-2E18NBU
Indoor (ID): 1
UNIT OF CS-
E9NKUAW +
1 UNIT OF
CS-E12NKUAW
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
rant
Gas Liquid
Ø3/8" Ø1/4"
(Ø9.52mm) (Ø6.35mm)
Min.
Max.
pipe
Standard Max. from
length
pipe Eleva- OD to
for
length tion each
each ID
ID unit
unit
See
24.6 ft 9.8 ft 82.0 ft 164.0 ft 65.6 ft
Step 1
15
Min. total
Addi-
pipe
Max. tional
Power
length
total refri-
supply
for
length ge-
additional
rant
gas
208/230V
60 Hz
0.2
MCA 20A
oz / ft
MOP
25A
Power
OD-ID
supply
connection
wire
wire size
size
AWG12 AWFG16