8
Outside
Diameter
Recommended
Torque
No torque wrench
available
Finger tighten and
use an appropriately
sized wrench to turn an
additional:
Inches
U.S.
1/4”
15 ft.-lb.
1/4 turn
3/8”
26 ft.-lb.
1/2 turn
1/2”
41 ft.-lb.
7/8 turn
5/8”
48 ft.-lb.
1 full turn
Table 2. Flare Nut Torque Recommendations
IMPORTANT!
Flared connections should always be accessi-
ble and must be insulated to prevent condensa-
tion. See fi gure 9.
UNIT
BASE
INSULATE ALL FLARED CONNECTIONS
TO PREVENT CONDENSATION
Figure 9. Insulate Flared Connections
1. Make a water-tight connection between the fi eld-
provided condensate drain line and the fl exible
condensate connector.
2. See
fi gure 10 for applications including a single unit
and a single drain. In this case, ensure that the drain
line is properly sloped (no less than 1/4 inch per foot)
and condensate lines are routed to ensure moisture is
drained away from the indoor unit.
3. Drain should be as short as possible and should not have
any droops or kinks that would restrict condensate fl ow
and shall be approved resistant pipe.
There must be
a 2-inch space between the end of the condensate
drain and the fi nal termination point (ground, open
drain, etc.) to ensure that the line will drain freely.
4. After system installation is complete, the condensate
drain line must be checked for leaks. This check is
part of the commissioning sequence. If a fi eld-provided
condensate pump has been installed, it must be
checked to ensure proper operation. This check is part
of the commissioning sequence.
Condensate Piping Connections
CAUTION
!
Make sure that drain piping is properly routed
and insulated in order to prevent both leaks and
condensation.
IMPORTANT!
Drain should have a slope of at least ¼ inch per
foot and should be approved corrosion-resis-
tant pipe.
You must confi rm operation of every drain and
pump in the system as part of the commission-
ing procedure.
DRAIN LINE
3 ft. (1 m)
SUPPORT
STRAPS
Figure 10. Condensate Drain Piping
