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Daikin RXYQ5PY1 Service Manual Page 152

R-410a heat pump 50hz/60hz cooling only 50hz.
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Appendix
To the piping installer
Restrictions on Installing Multi Connection Piping Kit
• Install the joint horizontally so that the caution label attached to joint comes to the top.
Do not tilt the joint more than ±15°. (See Fig. 1). In addition, do not install the joint vertically. (See Fig. 2)
• Make sure the piping up to the joint is straight for more than 500mm. Do not bend the field piping within this range. If a straight field piping
more than 120mm is connected, more than 500mm of straight section can be ensured. (See Fig. 3)
• Improper installation may lead to malfunction os the outdoor unit.
Fig 1
Caution label
Horizontal
line
Max.
±15°
Installation examples
• The figure at the lower shows a typical front connection. Make sure to follow the installation restrictions and
carry out installation taking the field requirements into consideration.
• This manual explains the front connection <Ex. of construction 1>.
• For 3-unit installation on Ex. of construction 5 and 6, in some cases the reducers (5), (6) or (10) for gas piping
and the reducers (2) and (3) for liquid piping may be used on the 1ste joint (section shown with
See the figure at the right for details of connection.
• When the size of the Gas-side pipe between the Gas-side joint (1) and Gas-side joint (2) on the 3-units system
or the size of the main pipe is
41.3 or
Ø
the right for details of connection.
• When the size of the Liquid-side pipe between the Liquid-side joint (1) and Liquid-side joint (2) on the 3-units
system is
12.7. Liquid-side reducer (3) will be used. And when the side of main pipe is
Ø
reducer (4) will be used. See the figure at the right for details of connection.
Ex. of
construction
1
Ex. of
construction
2
FOR BHFP22P100
Gas-side
reducer (
)
7
Field
piping
(
34.9)
Ø
Gas-side
reducer (
)
9
Field
ID Ø 31.8
piping
(
41.3)
Ø
FOR BHFP22P151
Gas-side
Gas-side joint (7)
reducer (
)
7
or Gas-side reducer (9)
Field
piping
Gas-side joint (1)
(
34.9)
Ø
Gas-side
reducer (
7
)
Field
ID Ø 38.1
piping
(
Ø
41.3)
Liquid side
Liquid side
reducer (4)
joint (3)
Field piping
(
15.9)
Ø
Cut in the center of connection
area by pipe cutter
To outdoor unit (
Gas-side reducer (6)
To outdoor unit (
Gas-side reducer (10)
Cut in the center of
connection area by
pipe cutter
Gas side
Gas side
joint (1)
1ste joint)
146
When istalling this kit, please apply the
following restrictions
Caution label
Ground
View
34.9. Gas-side reducer (7), (8) and (9) will be used. See the figure at
Ø
Ex. of
construction
3
Ex. of
construction
4
Liquid side
reducer (5)
Liquid side
Liquid side
Gas-side
reducer (3)
joint
joint
Field piping
(
12.7)
Ø
Field piping (
34.9)
Ø
or Field piping (
Ø
ID Ø 38.1
Field piping
Liquid side
Liquid-side
(
Ø
12.7)
reducer (3)
joint (2)
22.2)
Ø
To outdoor unit
(
9.5 or
12.7)
Ø
Ø
19.1)
Ø
Liquid-side reducer (3)
To 2nd joint
Gas side
To 2nd joint
reducer (5)
Liquid-side
reducer (2)
Liquid-side joint (1)
Liquid-side
Cut in the center of
(1ste joint)
connection area by
pipe cutter
Fig 2
Ground
View
).
15.9. Liquid-side
Ø
Ex. of
construction
5
Ex. of
construction
6
Cut in the center of
connection area by
pipe cutter
Field piping
(
15.9)
Ø
Gas-side reducer (7)
41.3)
or Gas-side reducer (9)
Gas-side joint (2)
ID Ø 38.1
SiEN34-705
Fig 3
Field piping
(More than 120mm
of length
General Information

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