Embedding The Tubing And Wiring - Sanyo KMS0772 Installation Instructions Manual

05-355 KMS0772_indoor 3/16/06
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.
Table 3
Allowable
Model Tubing Length
CM1972/CLM1972
CM2472/CLM2472
CM3172/CLM3172
* 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.

2-2. Embedding the Tubing and Wiring

G
Before beginning embedding installation work, consult
fully with agencies or offices related to the building's
foundation, construction, electricity, and water.
G
Wait to make connections to the embedded portion.
Each connection step is described later in this
manual.
G
Securely cover the end of the embedded tubing to
prevent intrusion of dirt or moisture.
G If an embedded tube is to be left for a long time, fill
the tube with nitrogen and seal both ends securely.
If a tube is left open for an extended time, moisture in
the air inside the tubing may condense into water
droplets, and lead to water contamination of the refrig-
erant circuit.
G
In order to prevent insulation breakdown and ground
faults, do not allow wiring ends to come in contact with
rainwater, or be subjected to condensation or dew.
G
Apply sufficient thermal insulation to the refrigerant
tubing and drain pipes.
5:27 PM Page 5
Max. Max. Allowable Total
Tubing Length
at shipment
per unit (L1+L2+L3) or
(ft.) (L1+L2+L3+L4)
(ft.)
82 150 (L1+L2+L3)
82 150 (L1+L2+L3+L4)
100 150 (L1+L2+L3+L4)
Limit of Limit of Elevation
Total Tubing Length Difference
(L1+L2+L3) or (H1, H2, H3, H4)
(L1+L2+L3+L4) (ft.)
(ft.)
150 (L1+L2+L3) 50
200 (L1+L2+L3+L4) 50
230 (L1+L2+L3+L4) 50
5
Required Amount
of Additional
Refrigerant
*
(oz./ft.)
—
0.22
0.22