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10■English
2-2. Selection of copper and heat insulation materials
When using commercial copper pipes and ttings, observe the following:
• Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F (0.035 to
0.045kcal/mh°C))
Be sure to use insulation that is designed for use with HVAC Systems.
• ACR Copper only.
Gas pipe
Liquid pipe
Gas pipe
insulation
Liquid pipe
insulation
Finishing tape
Drain hose
Inter-unit wire
• Be sure to insulate both the gas and liquid piping and observe the insulation
dimensions as below.
Gas side
Piping size
O.D. 3/8 inch
(9.5mm)
O.D. 1/2 inch
(12.7mm)
O.D. 5/8 inch
(15.9mm)
O.D. 1/4 inch
(6.4mm)
1-3/16 inch (30mm)
or more
1-9/16 inch (40mm)
or more
1-15/16 inch (50mm)
or more
1-3/16 inch (30mm)
or more
0.031 inch (0.8mm)
(C1220T-O)
0.039 inch (1.0mm)
(C1220T-O)
0.031 inch (0.8mm)
(C1220T-O)
I.D. 15/32-19/32 inch
(12-15mm)
I.D. 9/16-5/8 inch
(14-16mm)
I.D. 5/8-13/16 inch
(16-20mm)
I.D. 5/16-13/32 inch
(8-10mm)
13/32 inch
(10mm) Min.
Minimum bend radius Piping thickness Thermal insulation size
Thermal insulation
thickness
Liquid side
• Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
Installation Tips
1. Removing and installing the front panel
• Removal method
1) Place your ngers in the indentations on the main unit (one each on
the left and right sides), and open the front panel until it stops.
Indentations on
the main unit
2) While pushing the left side front panel shaft outward, push up the
front panel and remove it. (Remove the right side front panel shaft in
the same manner.)
3) After removing both front panel shafts, pull the front panel toward
yourself and remove it.
Front panel shaft
• Installation method
Align the shaft of the front panel with the grooves of grill, and push
all the way in, then close slowly. Push the center of the lower panel
surface rmly to engage the hooks.
English
01_EN_3P379970-5B.indd 10 10/29/2015 16:21:04
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