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Daikin RXYQ5PY1 Service Manual Page 242

R-410a heat pump 50hz/60hz cooling only 50hz.
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Heat Pump / Cooling Only 50Hz (RX(Y)Q5~54P)
3.6.6 E
XAMPLE OF
∗Note 1
When the equivalent pipe length between outdoor and indoor units is 90m or more, the size of main pip
Depending on the length of the piping, the capacity may drop, but even in such case it is able to increa
The first refrigerant branch kit
Outdoor unit
Main pipes
Increase
figure 9
Diameter of above case
Model
RX(Y)Q5 Type
RX(Y)Q8 Type
RX(Y)Q10 Type
RX(Y)Q12 Type
RX(Y)Q14 Type
RX(Y)Q16 Type
RX(Y)Q18 Type
∗Note 2
Allowable length after the first refrigerant branch kit to indoor units is 40 m or less, however it can be extend
1. It is necessary to increase the pipe size between the first branch
kit and the final branch kit. (Reducers must be procured on site)
However, the pipes that are same pipe size with main pipe must
not be increased.
2. For calculation of Total extension length, the actual
length of above pipes must be doubled. (except
main pipe and the pipes that are not increased)
3. Indoor unit to the nearest branch kit ≤ 40 m
4. The difference between
[Outdoor unit to the farthest indoor unit] and [Outdoor
unit to the nearest indoor unit]
*If available on the site, use this size. Otherwise it can not be increased.
∗Note 3
If the pipe size above the REFNET header is φ34.9 or more, KHRP26M73HP is required.
236
C
)
ONNECTION
Indoor unit
Gas
Liquid
Not
φ19.1
Increased
φ22.2
φ12.7
φ25.4*
φ12.7
Not
φ15.9
Increased
Not
φ15.9
Increased
φ31.8*
φ15.9
φ31.8*
φ19.1
Required Conditions
Model
φ31.8*
RX(Y)Q20 Type
φ31.8*
RX(Y)Q22 Type
RX(Y)Q24 Type
Increased
RX(Y)Q26 Type
RX(Y)Q28 Type
RX(Y)Q30 Type
RX(Y)Q32 Type
8 b + c + d + e + f + g + p ≤ 90 m
increase the pipe size of b, c, d, e, f
a + b × 2 + c × 2 + d × 2 + e × 2 + f × 2 + g
+ h + i + j + k + l + m + n + p ≤ 1000 m
h, i, j....... p ≤ 40 m
The farthest indoor unit 8
The nearest indoor unit 1
( a + b + c + d + e + f + g + p ) - ( a + h ) ≤ 4
≤ 40 m
SiEN34-705
Gas
Liquid
φ19.1
φ19.1
Not
φ19.1
φ38.1*
φ22.2
φ38.1*
φ22.2
φ38.1*
φ22.2
φ38.1*
φ22.2
Example Drawings
Installation Manual

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