Air Source Heat Pump Water Heater
16
(2) Bind up the connecting pipes, power cable, water temperature sensing
package, and communication lines (if necessary) of the wired controller
with thermal insulation bands, and then lead them through the hole.
(3) Remove the refrigerant pipe joint from the water tank and the sealing
nuts from the small and large valves of the outdoor unit, and add
refrigerant oil on the joint and valve cones.
(4) Remove the sealing caps of the connecting pipe. Align the center of the
bell mouth with the pipe joint and valve cone, and screw up the conical
nut with your hand and then with a wrench, as shown in Figure 7-2.
Figure 7-1 Refrigerant connecting pipe through the wall
Figure 7-2 Fastening the connecting pipe
NOTICE!
Perform pipe layout and bending carefully. Do not damage connecting pipes.
Do not screw up the nut too tight to damage to the nut, its corners, or the bell
mouth, or too loose to cause leakage. Table 7-1 shows the tightening torque.