Fit the seal to the drain joint, then insert the
drain joint into the base pan hole of outdoor unit.
o
Rotate the joint 90 to lock in place.
Connect the drain joint with a drain hose (field
supplied), and drain to waste. The drain is
required to drain the water produced by the unit
in heating mode, including defrost.
Outdoor drain joint installation
Seal
Drain joint
Base pan hole of
outdoor unit
Seal
Drain pipe
Refrigerant pipe connection
The primary cause of refrigerant leaks is
defective pipe flared connections.
Follow the correct flaring procedure as
detailed below:
A: Cut the pipes to length.
1. Only use new, clean, refrigerant grade
copper pipe.
2. Measure the distance between the indoor
and the outdoor unit.
3. Cut the pipes square and slightly longer
than the measured distance.
1. Pipe flaring
Fig.53
B: Burr removal
1. Remove all burrs completely from the cut
cross section of pipe.
2. Hold the end of the copper pipe down as
you remove the burrs. This will prevent
the burrs falling into the refrigerant pipe.
Pipe
Reamer/Deburrer
Point down
Fig.54
Fig.55
C: Put the flare nut on
Remove the flare nuts attached to indoor and
outdoor units. Put them on the pipe after
removing the burrs. Flare nuts cannot be put
on the pipe after the flares have been made.
Flare nut
Copper tube
Fig.56
15
REFRIGERANT PIPE CONNECTION
(1)
(2)
NOTE: The drain joint is product specific.
Bar
Copper pipe
Clamp handle
Cone
Yoke
Handle
Bar
"A"
Fig.57
D: Flaring the pipe
Hold the copper pipe firmly in a die, in accordance
with the dimensions shown in the table below.
Outer diam.
(mm)
A(mm)
Max.
Min.
6.35
1.3
0.7
9.52
1.6
1.0
12.7
1.8
1.0
12.7
1.8
1.0
90
Angled Uneven Burred
