Daikin GYEQ20AN, Руководство по обслуживанию

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SiAUY361411EA Installation Work Manual
Device Overview 40
0FGHP-EN0801 DGJ002
– 12 –
7 Installing the Outdoor Unit
„
Refrigerant piping configuration, allowable piping lengths, and allowable height
differences
Make sure that the refrigerant piping lengths and height differences are within the following ranges.
z Piping side
Cooling/heating mix operation units require BS units (units that allow switching between cooling and heating
mode).
You can switch between cooling and heating on each BS unit.
Indoor unit
BS unit BS unit BS unit BS unit BS unit BS unit
Range B Range B
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
Outdoor
unit
REFNET Header
REFNET Header
026723-01E
Note: No branch can be added downstream
of the REFNET Header.
3 pipes portion (suction gas pipe, discharge gas pipe, fluid pipe)
2 pipes portion (suction gas pipe, fluid pipe)
REFNET Joint
Range B
Range A
z Allowable piping lengths and allowable height differences
Maximum allowable length *1 Allowable height differences
Height differences
between BS units
$OORZDEOHOHQJWKƐ *3
after the first branch *2
Actual length
Equivalent
length
Height difference between
outdoor and indoor units
Height difference between
indoor units: H2
170 m or less 200 m or less 50 m or less 15 m or less
*4
15 m or less
*4
90 m or less
*1: Piping length from the outdoor unit to the farthest indoor unit
*2: First branch as seen from the outdoor unit
*3: BS units may be installed anywhere between the first branch and the indoor unit if that length is within 60 m.
However, the height difference between BS units should not exceed the value of H2 (m).
:KHQWKHOHQJWKDIWHUWKHILUVWEUDQFKƐ
2)
is over 40 m, use the height difference between the outdoor and indoor units should not exceed
the value of H2 given by the following formula.
11
When
Ɛ
2
is within the range of 40 to 60m: H2=37-
ʊ
×
Ɛ
2
(m)
20
7
When Ɛ
2
is within the range of 60 to 90 m: H2=11- ʊ × Ɛ
2
(m)
60
„
What is the equivalent piping length?
Equivalent length: the sum of the actual piping length plus the straight piping length equivalents of
the resistance of the respective parts of REFNET Joints and Headers and BS
units.
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Type
Pipe diameter
ij ij ij ij ij ij ij ij ij ij ij
L joint
0.16 0.18 0.2 0.25 0.35 0.4 0.45 0.5 0.55 0.65 0.75
REFNET Joint 0.5
REFNET Header 1.0
BS unit
BSGQ100/160PV1 6.0
BSGQ250PV1 15.0