Daikin REYQ72TAYCU Manual De Instalación página 15

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From outdoor unit (*4)
to indoor unit
Maximum
allowable
length
From first outdoor unit
multi connection pip-
ing kit to outdoor unit
(in a multi system)
From outdoor unit to
indoor unit
Allowable
From indoor unit to
height differ-
indoor unit
ence
From outdoor unit to
outdoor unit
Allowable length after branch (*5)
(*4) In the case of an outdoor units multi system, "outdoor unit" should be read as the "first outdoor unit multi connection piping kit", seen from the
indoor units side.
(*5) In the case of a multi Branch Selector unit, it should be read as the "REFNET header", and the allowable length of piping should be selected.
In the case where only 1 multi Branch Selector unit is included in the system, the actual piping length from each branch points of the multi
Branch Selector unit to each indoor units should be ≤130 ft. (40 m).
(*6) In the case where the equivalent piping length from outdoor units to indoor units ≥295 ft. (90 m), make sure to upsize the liquid pipe of the main
pipe (see the figure below), referring to the table below. (Do not upsize the high/low pressure gas pipe and the suction gas pipe.)
Outdoor unit capacity type
REYQ 72,96 T type
REYQ 120,144 T type
REYQ 168-240 T type
REYQ 264-384 T type
(*7) It can be extended to ≤295 ft. (90 m) (if outdoor unit is lower than indoor unit, ≤195 ft. (60 m) by field setting). See [2-49]=Height difference set-
ting on page 34.
3P362438-9J
English
Actual piping length from the outdoor unit (*4) to the indoor unit: ≤540 ft. (165 m)
Actual piping length
(Example) 4 : a+d+g+i≤540 ft. (165 m), 7 : a+b+c+ +m+o≤540 ft. (165 m),
Equivalent piping length from the outdoor unit (*4) to the indoor unit: ≤623 ft.
(190 m) (*6)
Equivalent length
(Calculate the equivalent piping length for the REFNET joint as 1.6 ft. (0.5 m),
REFNET header as 3.3 ft. (1 m), BS4
as 33 ft. (10 m), BSQ36
Total actual piping length from the outdoor unit (*4) to all indoor units: ≤3280 ft.
Total extension
(1000 m)
Actual piping length from the first outdoor unit multi connection piping kit to the
outdoor unit: ≤33 ft. (10 m)
Equivalent piping length from the first outdoor unit multi connection piping kit to the
outdoor unit: ≤43 ft. (13 m)
Actual piping length
Outdoor unit
Equivalent length
r
s
u
Height difference between outdoor unit and indoor unit (H1): ≤164 ft. (50 m) (if
Height difference
outdoor unit is lower than indoor unit, ≤130 ft. (40 m)) (*7)
Actual piping length X Height difference between indoor units (H2)
X ≤ 540 ft. (165 m)
Height difference
X ≤ 390 ft. (120 m)
Height difference
Height difference between outdoor units (H3): ≤16 ft. (5 m)
Actual piping length from the first REFNET joint or REFNET header to indoor
unit: ≤130 ft. (40 m) (*8)
Actual piping length
(Example) 4 : d+g+i≤130 ft. (40 m), 7 : b+c+ +m+o≤130 ft. (40 m),
Liquid pipe
f3/8 in. (9.5 mm) →
f1/2 in. (12.7 mm)
f1/2 in. (12.7 mm) →
f5/8 in. (15.9 mm)
f5/8 in. (15.9 mm) →
f3/4 in. (19.1 mm)
f3/4 in. (19.1 mm) →
f7/8 in. (22.2 mm)
8 : a+b+c+p≤540 ft. (165 m)
6Q54TVJ as 19 ft. (6 m), BS8 to 12Q54TVJ
60TVJ as 13 ft. (4 m), and BSQ96TVJ as 19 ft. (6 m).)
r≤33 ft. (10 m) (equivalent length≤43 ft. (13 m))
t
u+s≤33 ft. (10 m) (equivalent length≤43 ft. (13 m))
u+t≤33 ft. (10 m) (equivalent length≤43 ft. (13 m))
≤ 49 ft. (15 m)
≤ 98 ft. (30 m)
8 : b+c+p≤130 ft. (40 m)
First refrigerant
Outdoor units
branch kit
Main pipe
Upsize the liquid pipe
Branch
Selector
Indoor
units
units
12

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