38VYM
R-410A
GB - 7
E N G L I S H
Refrigerant connections
L
L
1
2
Flaring the ends of the tubing
Remove protective caps from copper tube ends.
Position tube end downward, cut the tube to the requested length
and remove the burrs with a reamer.
Do not leave the system open to the atmosphere any longer than
the minimum required for installation.
Oil in the compressor is extremely susceptible to moisture
absorption.
Always keep ends of tubing sealed during installation.
Remove flare nuts from the unit connections and place them on the
tube end.
Flare the tube with the flaring tool.
The flare end must not have any burrs or imperfections.
The length of the flared walls must be uniform.
The unit can be installed:
on the floor;
on the wall using the bracket kit.
Connect tubing in accordance with the limits shown on Table II
(Connections).
Finger-tighten the fitting several turns, then tighten it with a
wrench by applying the tightening torque indicated in the table.
Adjustable wrench
or torque wrench
Connection to unit
Insufficient tightening torque will cause gas leaks.
Overtightening the fittings will damage the tube flaring and
cause gas leaks.
• Make certain the refrigerant pipes and the electrical
connection lines between the indoor unit and the
outdoor unit have the same colours and reference codes
(A1, A2, A3, A4) using the special adhesive references
supplied.
Tightening torque
Valve
Flare nut
Valve cap
Pressure port cap
Valve needle
Pressure port
Wrench mm
Nm
Wrench mm
Nm
Wrench mm
Nm
Wrench mm
Nm
Wrench mm
Nm
1/4”
17
18
23
20
18
16 - 18 Allen (hex.) 5
9
–
0.34
3/8”
22
42
23
20
18
16 - 18 Allen (hex.) 5
9
–
0.34
1/2”
26
55
29
40
18
16 - 18 Allen (hex.) 5
13
–
0.34