Mitsubishi Electric City Multi PURY-EM200YNW-A1, Руководство по обслуживанию

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[8-13 Parts Replacement Instructions (Outdoor Unit) ]
BS_08_L chapter 8 -
81
8 Troub
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ting Bas
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Four-way valve (21S4b)
Cut the pipe here.
Four-way valve (21S4b)
Four-way
valve (21S4b)
Figure 18
Figure 19
Figure 20
(18B) To make it easier to connect four-way valve (21S4b), cut the pipe between the section above four-way valve (21S4b) and
the pipe bend with a pipe cutter. Cut the pipe with an expanded end that is included with four-way valve (21S4b) to the
same length as the pipe that was removed from the on-site pipe. (See Figure 18.)
(19B) Mount four-way valve (21S4b) to the pipe below four-way valve (21S4b) and in the middle. A total of five areas require
brazing, including the area indicated in (18B) and the areas indicated in Figure 19. Mount four-way valve (21S4b)
horizontal to four-way valve (21S4a) as shown in (10A).
(20B) Install the pipe below four-way valve (21S4b) and on the front by brazing at the two areas shown in Figure 20.
This step completes the replacement procedure for four-way valve (21S4b). Re-place the components that were removed as
they were.
Severed pipe
Area to be brazed
Area to be brazed
Area to be brazed
Area to be brazed
<S module>
Pipe diameter: φ12.7
ID of the pipe with an
extended end: φ12.7
<L module>
Pipe diameter: φ19.05
ID of the pipe with an
extended end: φ19.05
Cut the pipe with an expanded end that
is included with four-way valve (21S4b)
so that the section of the pipe
excluding the extended end will be the
same length as the pipe that was
removed from the on-site pipe.
Use the parts included with
four-way valve (21S4a).
When installing four-way
valve (21S4b), first braze
the pipe outside the unit
and then install it to the
unit.
Reinstall these pipes.
*The included pipe with an expanded
end is 100 mm long. Cut it to the
appropriate length.
Area to be
brazed
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