Toshiba Carrier TCB-DP22CUL Manuel D'installation page 7

Drain Pump Kit
n Knockout hole
Open the draw-out port (Knockout hole) at upper
side.
Draw-out port
at upper side
(Knockout hole)
n Connection of ELBOW PIPING KIT
Connect "ELBOW PIPING KIT" sold separately to
the indoor unit.
Elbow type pipe
at liquid side
Elbow type pipe
at gas side
Draw-out port
at upper side
7
u Tightening connection
CAUTION
• Do not apply excessive torque.
Otherwise, the nut may crack depending on the
conditions.
Outer diam. of copper pipe
1/4" ( 6.4 mm) (diam.)
3/8" ( 9.5 mm) (diam.)
1/2" (12.7 mm) (diam.)
5/8" (15.9 mm) (diam.)
• Tightening torque of flare pipe connections
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times) Therefore, using a torque
wrench, tighten the flare pipe connecting sections
which connect the indoor and outdoor units of the
specified tightening torque.
Incorrect connections may cause not only a gas
leak, but also a trouble of the refrigeration cycle.
Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers.
Then tighten the nut with a spanner and torque
wrench as shown in the figure.
Half union
Externally
threaded side
Use a wrench to secure.
Installation Manual
Unit : ft lbs (N•m)
Tightening torque
10.3" to 13.3" (14 to 18)
24.3" to 31.0" (33 to 42)
36.9" to 45.7" (50 to 62)
50.2" to 60.5" (68 to 82)
Flare at
indoor
unit side
Flare at
outdoor
unit side
Flare nut
Internally
threaded side
Use a torque wrench to tighten.
English-6