Panasonic CU-2S18NBU-1 service manual Installation Information, 9.1Check Points, Quick Guide

9. Installation Information

9.1Check Points

QUICK GUIDE

PIPING & ELECTRICAL SPECIFICATION

Min. pipe

Max.

Min. total

Piping size

Standard

Max.

pipe

Power

OD-ID

Indoor(ID) & Outdoor(OD) units:

Capacity

Max.

length for

from

Additional

Power

Refrigerant

pipe

total

length for

supply

connection

Possible Combination Patterns

(Btu/h)

Elevation

each ID

OD to

refrigerant

supply

length

unit

each ID

length

additional

wire size

wire size

Gas

Liquid

gas

Outdoor (OD): CU-2S18NBU-1

Indoor (ID): 2 UNITS OF

CS-S9NKUW-1

208/230V

Outdoor (OD): CU-2S18NBU-1

Indoor (ID): 2 UNITS OF

16700

R410A

ø3/8"

ø1/4"

24.6 ft

49.2 ft

9.8 ft

82.0 ft

164.0 ft

65.6 ft

0.2 oz / ft

60 Hz

AWG12

AWG16

CS-S12NKUW-1

(ø9.52mm)

(ø6.35mm)

MCA 20A

MOP 25A

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.

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