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6
install the indoor unit more than 3.3' (1 m) away from any
antenna or power lines or connecting wires used for tele-
vision, radio, telephone, security system, or intercom.
Electrical noise from any of these sources may affect
operation.
install in a sturdy manner to avoid increased operating
noise.
Table 3
* If total tubing length becomes 150 to 200 ft. (Max.) or 150 to 230 ft. (Max.), charge additional refrigerant (R410A) by 0.22 oz./ft.
No additional charge of compressor oil is necessary. For more detailed charging information, refer to the Technical & Service Manual.
Max. Max. Allowable Total Limit of Limit of Elevation Required Amount
Allowable Tubing Length Total Tubing Length Difference of Additional
Model Tubing Length at Shipment (L1+L2+L3) or (H1, H2, H3, H4) Refrigerant
Per Unit (L1+L2+L3) or (L1+L2+L3+L4) (ft.) (oz./ft.)*
(ft.) (L1+L2+L3+L4) (ft.)
(ft.)
CU-3KS19NBU 82 150 (L1+L2+L3) 150 (L1+L2+L3) 50 —
CU-4KS24NBU 82 150 (L1+L2+L3+L4) 200 (L1+L2+L3+L4) 50 0.22
CU-4KS31NBU 100 150 (L1+L2+L3+L4) 230 (L1+L2+L3+L4) 50 0.22