Haier AB092FCBHA User Manual - Pipe Connection
22
Pipe connection
Threads on the pipes may be damaged when tightening
if the pipes are not well aligned.
(1)
Schematic diagram for unit connection
(4)
Pipe connection
Torque
18 N.m
Pipe Value
6.35mm
9.52mm
Liquid
Gaseous
50 N.m
(2)
Connection pipe dimensions:
9.52mm
12.7mm
Liquid
Gaseous
25 N.m
42 N.m
90*0.5*
Outdoor uint
Gaseous pipe
Liquid pipe
3-way Valve
2-way Valve
Flared pipe connection
Flared pipe connection
Indoor unit
Indoor unit
Manifold tube
l Apply and tighten the nut.
3. Maximum length and height difference of connecting pipe
l Maximum length: 20m; Height difference: 10m
l To ensure efficiency, shortest possible pipe should be used.
Cautions for pipe connection
l Pipes free from twists, deformation, water, dust.
Dedicated tools for each R407C and R22
should be used and stored separately.
l Optimized radii of bends
l Insulation to be applied on all gaseous pipes
l Flared section free from cracks
Joint
Spanner
Spanner
Nut
Process
Apply refrigeration oil on the end of the pipe
to be connected and on the flared section.
Align the pipes to be connected and tighten
the nut. (See the figure)
Ensure that no foreign articles enter into the pipes.