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3.3 Hoisting of outdoor unit
1) Don't remove any package upon hoisting. Two ropes (more than 8cm) shall be used to hoist the well-packaged machine stably and
safely. If there is no package or the packaging material is broken, use some backing plates or packaging materials to protect the
machine.
2) The outdoor unit shall be carried and hoisted vertically, within an inclination of less than 15 degrees. Care should be taken to safety
during carrying and hoisting the machine.
3) The gravity of the machine is not in the center, so be careful to hoist the machine.
4) Don't hold the suction inlet of the housing, or it will be deformed.
3.4 Installation and maintenance space of outdoor unit
1) Provide a firm and adequate foundation to:
① Prevent the outdoor unit from being sunken;
② Prevent the outdoor unit from abnormal noise.
2) Foundation types
① Steel structure
② Concrete structure (Common practice is shown in the Fig. below)
Fig 3-3 Space schematic diagram I for installation and maintenance of outdoor unit
3.5 Pipe Connection
1) Must be connected to air supply and return pipe of more than 1m, also can effectively avoid short circuit of supplying and returning.
2) The equivalent static pressure of the longest pipe length should be less than or equal to 90pa to ensure the normal operation of the unit.
3) Install a downwardly sloping pipe to prevent rain from entering and to provide heat to the pipes and connections to prevent condensation.
4) Static pressure dialing of electronic control should be selected according to the static pressure of the installed pipeline.
3.6 Position and installation of outlet pipe
1) Drainage sometimes gets ice, so avoid draining where people use it often.
2) When installing this unit, the outlet section of the drain pipe should be lower than the opposite side(>25mm/<30mm) to avoid poor drainage.
3) As shown in the figure below, the siphon must be connected and special care must be taken when connecting the unit.
4) The inner diameter of the prepared drain pipe should be greater than 25mm, and the drain pipe should be bent downwards, and the slope
should be greater than 2%.
5) Check to make sure the drain is smooth. Pour some water into the drain pan to make sure the water does not stay on the drain pan.
6) Check drain fittings regularly (annually) to avoid water leakage.
>75mm
>2%
Fig. 3-3 Schematic diagram for connecting pipe of outdoor unit
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