Connection Of Pipeline - Sinclair S therm Series Service Manual

4.6 Connection of Pipeline

4.6.1 Connection of outlet pipe for indoor & outdoor unit
(1) Align the expansion end of copper pipe with the center of threaded joint. Tighten the flaring nuts with your
hands.
(2) Tighten the flaring nuts with torque wrench until you hear a "click".
(3) Bend of fitting pipe shall not be too low; otherwise the fitting pipe might crack. Please use pipe bender when
bending the fitting pipe.
(4) When connecting outdoor and indoor unit, never pull the big and small joint of indoor unit with force, so as
to prevent the tubes of indoor unit from cracking and causing leakage.
(5) Connecting pipe shall be supported by a rack without transmitting its weight to other units.
4.6.2 Installation of protective layer on connection pipe
(1) To avoid condensate dew or water leakage on connecting pipe, the air pipe and liquid pipe must be
wrapped with heat preservation material and adhesive pipe for insulation from the air.
(2) The joints on indoor unit and outdoor unit must be wrapped with heat preservation materials and have no
clearance against the wall surface of indoor unit and outdoor unit.
Water expansion factor in different temperature
Temperature
0
4
10
20
30
40
45
50
55
60
65
70
75
80
85
90
95
100
122
Expansion factor e
0.00013
0
0.00027
0.00177
0.00435
0.00782
0.0099
0.0121
0.0145
0.0171
0.0198
0.0227
0.0258
0.029
0.0324
0.0359
0.0396
0.0434