Daikin RWEYQ26PY1 [319/342] Indoor units 1 8

Daikin RWEYQ30PY1 [319/342] Indoor units 1 8
Example of Connection Si30-813
308 Appendix
Required Conditions Example Drawings
1.
It is necessary to increase the gas pipe size (*1)
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
[Outside unit to the farthest indoor unit] and [Outside unit to
the nearest indoor unit] 40 m
8 b+c+d+e+f+g+p 90 m
increase the gas pipe size (*1) of b, c, d, e, f, g
a+b×2+c×2+d×2+e×2+f×2+g×2
+h+i+j+k+l+m+n+p 300 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) 40 m
Increase the gas
pipe size (*1) as follows
φ 9.5 → φ12.7
φ12.7 → φ15.9
φ15.9 → φ19.1
φ19.1 → φ 22.2
φ22.2 → φ25.4*2
φ28.6 → φ31.8*2
φ34.9 →φ 38.1*2
a
ABCDEFG
bcdef
g
hi j kl mn
1234567
8
p
REFNET joint (A-G)
Indoor units ( 1 - 8 )
*1 In case of heat pump system, the liquid pipe and gas pipe.
In case of heat recovery system, the liquid pipe and suction gas pipe.
*2 If available on the site, use this size. Otherwise it can not be increased.
Note 1.
When the equivalent pipe length between outside and indoor units is 80m or
more, the size of main pipes on the liquid side (refer to the figure below)
must be increased according to the right table.
(Never increase suction gas pipe and HP/LP gas pipe.)
Note 2. Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be extended up to 90m if all the following conditions are satisfied. (In case of “Branch with REFNET joint”)
System
RWEYQ10PYL/TL
RWEYQ20PYL/TL
RWEYQ30PYL/TL
Liquid pipe
φ9.5 →φ12.7
φ15.9 →φ19.1
φ19.1 →φ22.2
Outside unit
Outside
unit
Main pipes
First refrigerant branch kit
Indoor unit
Increase only liquid pipe size

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