Piping Connection Summary - Zanussi ZS12V70CCHI Service Manual

5.5.1 Flaring Work
Main cause for refrigerant leakage is due to defect in the flaring work. Carry out correct flaring work using the following procedure:
• Cut the pipes and the cable.
• Use the piping kit accessory or pipes purchased locally.
• Measure the distance between the indoor and the outdoor unit.
• Cut the pipes a little longer than the measured distance.
• Cut the cable 1m longer than the pipe length.
5.5.2 Burr Removal
• Burrs not removed may result in leakage of gas.
• Remove burrs at the tip of the pipe cut.
• Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the
tubing.
5.5.3 Put Nut on
Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal. (It is not
possible to put them on after flaring work.)

5.6 Piping Connection Summary

5.6.1 Indoor Unit
• Connecting the indoor unit tubing to the connection piping:
– Align pipes to be connected. Sufficiently tighten the flare nut with fingers, and then tighten it by using wrenches.
– Then tighten the flare nut with spanner and torque wrench.
• Wrap the insulation material around the connecting portion:
– Cover the indoor unit pipe and the connection pipe with the heat insulation material. Bind them together with vinyl tape so that
there is no gap.
– Ensure to isolate separately the suction pipe from the liquid pipe.
– Wrap the insulated pipes with vinyl tape in the rear section for pipe housing. Fasten the power cable to the pipes with vinyl
tape.
– Wrap the piping, drain hose and power cable tightly with vinyl tape so that they can fit into the rear piping housing section.
• Connecting the indoor unit tubing to the connection piping:
– Remove the spacer.
– Hook the indoor unit onto the upper portion of the mounting plate (Engage the hooks of the mounting plate into the openings
at the rear top of the indoor unit).
– Ensure that the hooks are properly seated on the mounting plate by moving the indoor unit in all directions.
– Press the lower left and right sides of the unit against the mounting plate until the hooks engage into their slots (clicking
sound).
5.6.2 Outdoor Unit
• Align pipes to be connected. Sufficiently tighten the flare nut with fingers, and then tighten it by using wrenches as shown.
• Then, tighten the flare nut with torque wrench until the wrench clicks.
• Make sure to follow the above torque table value.
5.6.3 Piping Formation
• Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with narrow vinyl tape
and wide vinyl tape.
– If you want to connect an additional drain hose, the end of the drain hose outlet should be routed above the ground. Secure
the drain hose appropriately.
• In cases where the outdoor unit is installed below the indoor unit level:
– Wrap the piping, drain hose and connecting cable from the down to up.
– Secure the wrapped piping along the exterior wall using saddle or equivalent.
• In cases where the outdoor unit is installed above the indoor unit level:
– Wrap the piping and connecting cable from the down to up.
– Form a trap to prevent water from entering the room.
– Secure the wrapped piping along the exterior wall using saddle or equivalent.
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