Air Source Heat Pump Water Heater
14
7 Pipeline Connection
7.1 Refrigerant Pipe Connection
(1)
If the water tank and the main unit need to be connected by punching
through a wall, a hole of Φ 55 mm must be drilled in the wall and the hole should be
inclined toward the exterior wall, as shown in Figure 7-1. Protective sleeves need to
be put on both sides of the hole.
(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.
Indoor
Wall
Protective sleeve
through the wall
Outdoor
Figure 7-1 Refrigerant connecting pipe through the wall
Conical
nut
Designated
pipes
Torque
wrench
Figure 7-2 Fastening the connecting pipe
