Precautions - York R-410A Technical & Service Manual

Installation
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4.5) Precautions:

4.5.1 Refrigerant pipe must use the pipe with specified diameter.
4.5.2 Branch Part should be installed in horizontal mode or vertical mode.
4.5.2 Y shape three-way pipe should be installed in horizontal mode with ground.
4.5.4 Horizontal installation of throttling unit (throttling unit is an external unit, so it need
be connected on site)
Caution:
a. Install the throttling part upright, and ensure that it does not incline or is reversed.
b. Use two spanners to connect the electronic throttling part with the pipes of the indoor and
outdoor units, so as to avoid the copper pipe from deforming or getting broken.
c. Use flaring opening to connect the electronic throttling part with the pipes of the indoor and
outdoor units. Do not use welding for the connection, because the heat caused during the
welding process will be transferred to the electronic expansion valve via the copper pipe, which
may damage the electronic expansion valve.
d. Pay attention to the connection direction (refer to the label on the electronic throttling part).
e. For the installation size of the electronic throttling part, see the above figure.
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