Daikin REMQ14PY1 [465/491] A b e f
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Daikin REMQ14PY1 [465/491] A b e f

Daikin REMQ10PY1 [465/491] A b e f
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 7HVW2SHUDWLRQ
8 19.1 15.9
10 22.2 19.1
12 28.6 19.1
14+16 28.6 22.2
18 28.6 22.2
20+22 28.6 28.6
24 34.9 28.6
26~34 34.9 28.6
36 41.3 28.6
38~48 41.3 34.9
8+10 22.2 19.1
12 28.6 19.1
14+16 28.6 22.2
C
A
BEF
CC
DD
F
R = [(X
1
×
φ
22.2) × 0.37] + [(X
2
×
φ
19.1) × 0.26] +
[(X
3
×
φ
15.9) × 0.18] + [(X
4
×
φ
12.7) × 0.12] +
[(X
5
×
φ
9.5) × 0.059] + [(X
6
×
φ
6.4) × 0.022]
+ A
× 1.02
A. Piping between outdoor unit and refrigerant branch kit
B. Piping between outdoor unit multi connection piping units
Choose from the following table in accordance with the outdoor unit total ca
downstream.
Pipe size selection
For an outdoor unit multi installation (REYQ18~48P),
selectthepipe size in accordance with the following figure.
C. Piping between outdoor unit multi connection piping kit and outdo
Choose from the following table in accordance with the capacity type of the
How to calculate the additional refrigerant to be charged
Additional refrigerant to be charged R (kg)
R should be rounded off in units of 0.1 kg
When the equivalent pipe length between outdoor and indoor units i
s 90m or more, the size of the main
liquid pipe must be increased. Never increase suction gas pipe and HP/LP gas pipe sizes.
Depending on the length of the piping, the capacity may drop, but even in such a case it is possible to
increase the size of the main liquid pipe.
Note:
Note:
Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be ext
e
Required conditions
It is necessary to increase the pipe size of the liquid and suction gas pipe if the pipe length between the
first and the final branch kit is over 40m (reducers must be procured on site). Increasing the HP/LP gas
pipe size is not allowed.
If the increased liquid pipe size is larger than the pipe size of the main liquid pipe, then the pipe size
o
the main liquid pipe needs to be increased as well.
If the increased suction gas pipe size is larger than the pipe size of the main suction gas pipe, then t
h
allowable length after the first refrigerant branch kit may not be increased to 90m.
Size-up of the main suction gas pipe may affect a good oil return to the outdoor unit due to influence
o
the HP/LP gas pipe.
The difference between the distance of the outdoor unit to the farthest indoor unit a nd the distance of th
e
outdoor unit to the nearest indoor unit ≤40m
Indoor unit to the nearest branch kit ≤40
For calculation of total extension length, the actual length of above pipes must be doubled (except length of
main pipes and of pipes which do not have an increased pipe size).
The refrigerant charge of the system must be less than
100kg. This means that in case the calcula
ted
refrigerant charge is equal to or more than 95kg you
must divide your multiple outdoor system into smaller
independent systems, each containing less than 95kg
refrigerant charge.
For factory charge, refer to the unit name plate.
X
1...6
= Total length (m) of liquid piping size at
φ
φ
a
A = Weight according to table A
B = Weight according to table B in function of indoor unit connection ratio
Outdoor unit
capacity type (Hp)
Piping outer diameter size
Outdoor unit
capacity type (HP)
Piping outer diameter size
HP/LP gas pipe
Suction gas pipe
HP/LP gas pipe
Suction gas pipe

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