Air-to-water Heat Pump Split Versati
69
SPLIT TYPE
Water expansion factor in different temperature
Temperature(°F/°C)
Expansion factor e
113/45
0.0099
122/50
0.0121
131/55
0.0145
140/60
0.0171
149/65
0.0198
158/70
0.0227
167/75
0.0258
176/80
0.029
185/85
0.0324
194/90
0.0359
203/95
0.0396
212/100
0.0434
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.
Common
wrench
Torque
wrench
4.6.2 Installation of Protective Layer on the 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.
(3) Wrap the pipe with tapes.
•
Use the adhesive tape to wrap the connecting pipe and cable into one bundle. To prevent condensate
water from overflowing out of the drainpipe, the drainpipe shall be separated from connecting pipe and
cable.
•
Wrap the heat preservation tape so that each ring of tape shall press half of the previous ring.
•
Fix the wrapped pipe onto the wall with pipe clamp.
•
Do not wrap the protective tape too tightly, as this will decrease the heat insulation performance.
