5
G
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.
G
install in a sturdy manner to avoid increased operating
noise.
T
able 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
T
otal
Limit of
Limit of
E
levation
Required Amount
Allowable
T
ubing Length
T
otal
T
ubing Length
Difference of
Additional
Model
T
ubing 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.)
CMH1972
82
150 (L1+L2+L3)
150 (L1+L2+L3)
50
—
CMH2472
82
150 (L1+L2+L3+L4)
200 (L1+L2+L3+L4)
50
0.22
CMH3172
100
150 (L1+L2+L3+L4)
230 (L1+L2+L3+L4)
50
0.22
07-155 CMH1972-3172 6/6/07 9:34 AM Page 5
