950-0203-revK - 13 - March 1, 2016
3.
Install flare nuts and follow standard flaring procedures. Use
proper flaring tools for a leakproof connection. If a flared section
is defective, cut it off and follow standard flaring procedures
again.
4.
After cutting to length, creating the flares and before connecting
the line set, clear all foreign materials by blowing nitrogen
through copper tubing. Align the center of the tubing flare with its
mating connector. Screw on the flare nut by hand and tighten
the nut with a spanner and torque wrench. See Figure 12.
Note
: Exceeding the tightening torque will damage the flare surface.
Tightening Torque Table:
1/4
”
11
– 22
lbs ft.
3/8
”
23
– 29
Lbs ft.
1/2
”
33
– 37
lbs ft.
5/8
”
44
– 48
Lbs ft.
5.
Verify that the proper line set is being connected to
the intended port of the outdoor unit. Connect the
line sets to their appropriate fittings on the outside
unit, and torque the flare fittings per the table
above.
6.
Bundle all lines, control cables and condensation
drain together. Be sure to leave ample length on
control cable to allow for termination. Bundle can
be secured together using vinyl tape.
Note:
Condensation drain MUST be placed at the
bottom of the bundle as shown in the Figure 14.
Failure to do so may cause evaporator to drain
improperly.
7.
Line sets must have each tube insulated
separately, including their unions with at least 1/4
”
thick insulation. Wrap the refrigeration tubing, drain
hose, and electrical cables with a UV protected
vinyl tape. Overlap insulation at all refrigeration
joints per Figure 15.
Note:
Completely wrap line set with insulation.
Insulation joints may overlap if desired.
CAUTION!
Failure to completely wrap both lines with insulation may result in damage from condensation
forming on lines, and dripping onto walls, ceilings, etc.
Vin yl ta p e
Co n n e ctio n p ip e
( h e a t in su la tio n )
In d o o r u n it p ip in g
Bin d th e
s to g e th e r
so th a t th e r e is n o g a p
p ip e
.
O ve r la p th e in su la tio n
Torque wrench
Spanner
Flare nut
Joint
Connection pipe
Figure 13
Figure 14
Suction Line
Liquid Line
Condensation Drain
Control cable
Figure 15
Figure 12
DO NOT CROSS WIRES OR CROSS
CONNECT SYSTEMS TO OUTDOOR UNIT.
