Daikin RWEYQ144PTJU, Installation Manual

Page: 18 / 24

13 English
9-5 Example of connection
∗
In case of a system of switching between cooling and heating, all systems use 2-tube piping (for suction gas piping and liquid piping). No BS unit
is required.
Example of connection
(Connection of 8 indoor units Heat pump system)
Single outside
unit installed
(RWEYQ72, 84)
a
b
k
i
j
c
de
s
c
am
b
r
q
o
m
n
p
Outside unit
Outside unit
Outside unit
Outside unit
REFNET joint (A-G)
REFNET joint (A-G)
REFNET joint (A·B)
REFNET joint (A·B)
REFNET header
REFNET header
REFNET header
REFNET header
BS units ( B1 - B4 )
When m
ultiple
outside units
installed
(RWEYQ144~)
Maxim
um
allo
w
a
b
le
length
Betw
een outside
(
∗
)
and indoor units
Betw
een outside br
anch and outside unit
(In case of R
WEYQ144 or more)
Betw
een outside and indoor units
Betw
een indoor and indoor units
Betw
een outside and outside units
Actual pipe length Actual pipe length Actual pipe length Diff
erence in height
Diff
erence in height
Diff
erence in height
Equiv
alent length
To
tal e
xtension length
Pipe length betw
een outside (
∗
2) and indoor units
≤
390 ft
(Example 1,4) unit 8 :
a + b + c + d + e + s
≤
390 ft
(Example 1,4) unit 8 :
b + c + d + e + s
≤
130 ft
Equiv
alent pipe length betw
een outside (
∗
2) and indoor units
≤
459 ft (assume equiv
alent pipe length of REFNET joint to be 1.6 ft, that of REFNET header to be 3.3 ft, BSVQ100(36),160(60) is
13.1 ft and BSVQ250 is 19.7 ft.)
Piping length from outside br
anch to outside unit
≤
33 ft Equiv
alent length:
max 43 ft
Diff
erence in height betw
een outside and indoor units (H1)
≤
164 ft (Max 130 ft if the outside unit is belo
w)
Diff
erence in height betw
een indoor units (H2)
≤
49 ft
Diff
erence in height betw
een outside unit (main) and outside unit (sub) (H3)
≤
6.5 ft
Pipe length from first refr
iger
ant br
anch kit (either REFNET joint or REFNET header ) to indoor unit
≤
130 ft
T
otal piping length from outside unit (
∗
2) to all indoor units
≤
980 ft
Allo
w
a
b
le
height length
Allo
w
a
b
le length after the br
anch
(Example 3,6) unit 8 :
a + o
≤
390 ft
(Example 2,5) unit 6 :
a + b + l
≤
390 ft, 8 :
a + m + n + p
≤
390 ft
(Example 3,6) unit 8 :
o
≤
130 ft
(Example 2,5) unit 6 :
b + l
≤
130 ft, 8 :m + n + p
≤
130 ft
r
≤
33 ft (
Equiv
alent length
≤
43 ft)
u+s
≤
33 ft (
Equiv
alent length
≤
43 ft)
u+t
≤
33 ft (
Equiv
alent length
≤
43 ft)
Refr
iger
ant br
anch kits can only be
used with R410A.
Ho
w to select REFNET joint:
•
When using REFNET joints at the first br
anch counted from the outside unit side
.
Choose from the f
ollo
wing tab
le in accordance with the capacity of the outside unit.
(Example 1,2,4,5 :
REFNET joint
A
)
Additional ref
er
iger
ant to be charged R (lbs)
(R should be rounded off in units of 0.1 lbs
.)
NO
TE:
If a negativ
e result is gotten f
or R from the f
o
rm
ula at r
ight,
no refr
iger
ant needs to be added.
R
W
EYQ72, 84
R
W
EYQ144, 168
R
W
EYQ216, 252
KHRP25M33T
KHRP25M72TU KHRP25M73TU
KHRP26M33T
KHRP26M72TU KHRP26M73TU
•
F
or REFNET joints other than the first br
anch, select the proper br
anch kit model based on the total capacity inde
x.
Ho
w to select REFNET header
•
Select suitab
le one from the tab
le belo
w according to the total capacity of indoor units to be connected to the
do
wn stream of REFNET header
.
Ho
w to select an outside br
anch kit (Needed when the outside unit type is R
WEYQ144 or more
.)
•
Select from the tab
le belo
w according to the n
umber of outside units
.
(Example 1,4) In case of REFNET Joint
C
, indoor units of 5 + 6 + 7 + 8
(Example 2,5) In case of REFNET Joint
B
, indoor units of 7 + 8
(Example 2,5) In case of REFNET Header
, indoor units of 1 + 2 + 3 + 4 + 5 + 6
(Example 3,6) In case of REFNET Header
,
indoor units of 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
Example of do
wnstream indoor units
Piping betw
een refr
iger
ant br
anch kit and refr
iger
ant br
anch kit/BS unit
Piping betw
een BS unit and refr
iger
ant br
anching kit
•
S
elect one from the tab
le belo
w according to the total capacity of indoor units to
be connected to do
wnstream.
•
F
or the gas piping siz
e in case of 2-tube piping betw
een refr
iger
ant br
anching kit/BS unit
and refr
iger
ant br
anching kit, select the siz
e of suction gas piping.
•
The siz
e of connection piping should not e
xceed the refr
iger
ant piping siz
e selected
under the gener
ic ter
m of the system.
Indoor unit connection piping siz
e
Piping betw
een BS unit (refr
iger
ant br
anch kit) and indoor unit
•
Match to the siz
e of the connection piping on the indoor unit.
∗
mar
k indicates the BS unit (BSVQ100MV1) por
t and connection pipe are
diff
erent siz
es
. Use the reducing joints included with the BS unit.
a:
φ
3/4×30 ft
b:
φ
5/8×10 ft
c:
φ
3/8×10 ft
d:
φ
3/8×10 ft
e:
φ
3/8×10 ft
f:
φ
3/8×10 ft
g:
φ
1/4×10 ft
h:
φ
1/4×20 ft
i:
φ
1/2×10 ft
j:
φ
1/4×10 ft
k:
φ
1/4×10 ft
l:
φ
1/4×10 ft
m
:
φ
1/4×10 ft
n:
φ
1/4×10 ft
o:
φ
1/4×10 ft
p:
φ
1/4×10 ft
r:
φ
3/8× 3 ft
s:
φ
3/8× 3 ft
t:
φ
3/8× 3 ft
u:
φ
5/8× 1 ft
Diameter of liquid pipe (main pipe por
tion)
R=
+
Outside unit
capacity type
Refrig
erant branc
h kit name
+
+
+
+
+
(Heat reco
v
e
ry
system)
If the outside unit is R
W
EYQ252 and the
piping lengths are as at r
ight
R= 30 0.168 + 11 0.114 + 10 0.074 + 49 0.036 + 100 0.015 + 13 = 23.298
b+u
a
c+d+e+f+r+s+t
g+h+j+k+l+m+n+o+p
i
23.3 (lbs)
Total length (ft) of liquid piping siz
e at
φ
7/8
×0.235 (lbs/ft)
  
  
Total length (ft) of liquid piping siz
e at
φ
3/8
  
  
Total length (ft) of liquid piping siz
e at
φ
1/4
  
  
Total length (ft) of liquid piping siz
e at
φ
3/4
  
  
Total length (ft) of liquid piping siz
e at
φ
5/8
  
  
Total length (ft) of liquid piping siz
e at
φ
1/2
  
  
×0.168 (lbs/ft)
×0.114 (lbs/ft)
×0.074 (lbs/ft)
×0.036 (lbs/ft)
×0.015 (lbs/ft)
System name
1 unit (72 / 84) 2 unit m
ulti (144 / 168)
3 unit m
ulti (216 / 252)
4.4 5.5 6.6
6.6 9.9
13
Heat reco
v
e
ry
system
Heat pump system
Example f
or refr
iger
ant br
anch using REFNET joint and REFNET header f
or R
WEYQ252
Refrig
erant branc
h kit selection
Pipe siz
e selection
F
or an outside unit m
ulti installation (R
WEYQ144, 168, 216, 252 type),
mak
e the settings in accordance with the f
ollo
wing figure
.
Piping betw
een outside unit and refr
iger
ant br
anch kit (par
t A)
Piping betw
een outside br
anches (par
t B)
Piping betw
een outside br
anch and outside unit (par
t C)
Ho
w to calculate the ad
ditional refrig
erant
to be c
har
g
e
d
Outside unit
r
s
u
Heat reco
ver
y system
Heat pump system
Indoor unit
capacity type
Piping siz
e (outer diameter)
Liquid pipe
Gas pipe
φ
1/2
φ
5/8
φ
1/4
φ
3/8
07,09,12,18 type 24,30,36,48 type
(Unit:
inch)
Indoor unit connection piping siz
e
Indoor units ( 1 - 8 )
Heat reco
ve
ry
system
( 1 - 6 )
Cooling only ( 7
· 8 )
BS units ( B1 - B4 )
Indoor units ( 1 - 8 )
Heat reco
ve
ry
system ( 1 - 6 )
Cooling only ( 7
· 8 )
BS units ( B1 - B5 )
BS units ( B1 - B5 )
Indoor units ( 1 - 8 )
Heat reco
ver
y system
( 1 - 4 , 7 · 8 )
Indoor units ( 1 - 8 )
Cooling only ( 5
· 6 )
l
f g
a
b
c
d
e
h
H2 H1
H1
1
12
3
4
5
6
7
8
23
4
5
6
7
1
1
2
3
456
7
8
23456
7
8
8
B2
B3
B4
B1
B1
B2
B3
B4
B5
B2
B3
B4
B5
d
e
f
g h
i
j
k
l
m
a
a
b
a
b
d
f
c
e
g
f
h
j
d
c
e
gi
k
l
m
n
o
b
Outside unit
Outside unit
1
12
3
45
6
7
8
2
34
5
6
7
8
B1
B2
B3
B4
B5
B6
B6
B5
B4
B3
B2
B1
BS units ( B1 - B6 )
BS units ( B1 - B6 )
Indoor units ( 1 - 8 )
Heat reco
ver
y system
( 1 - 6 )
Heat reco
ve
ry
system ( 1 - 6 )
Indoor units ( 1 - 8 )
Cooling only ( 7
· 8 )
Cooling only ( 7
· 8 )
First outside br
anch
s
r
p
q
n
o
k
i
l
j
h
g
f
H3
H1
H2
h i
j
k
l
m
n
o
BS unit
Outside unit side
(Thic
k line):
3-tube piping
Indoor unit side
(3-tube piping)
(2-tube piping)
Discharge gas piping
Gas piping Liquid piping
Liquid piping
Suction gas piping
• Piping betw
een outside unit and BS unit
Discharge gas piping Suction gas piping Liquid piping
(Thin line):
2-tube piping
• Piping betw
een BS unit and indoor unit,
Suction gas piping Liquid piping
If the system capacity is R
WEYQ144 or more
,
re-read the [outside unit] as [the first outside br
anch
seen from the indoor unit side]. [
∗
]
Corrected volume b
y
outside unit
t
H1 H2
Heat reco
ve
ry
system
( 1 - 4 , 7 · 8 )
Cooling only ( 5
· 6 )
m
Branch with REFNET joint
Branch with REFNET joint and REFNET header
Branch with REFNET header
Capacity type
of outside unit
Piping siz
e (outer diameter)
When increased
Standar
d siz
e
φ
3/8
φ
1/2
φ
5/8
φ
3/4
φ
1/2
φ
5/8
φ
3/4
φ
7/8
R
W
EYQ72,84
R
W
EYQ144
R
W
EYQ168,216
R
W
EYQ252
Piping betw
een outside unit and refr
iger
ant br
anch kit (par
t A)
•
Match
to the siz
e of connection piping of outside unit
Capacity type
of outside unit
Piping siz
e (outer diameter)
Suction gas pipe
φ
3/4
φ
7/8
φ
1-1/8
φ
1-3/8
Disc
har
g
e gas pipe
φ
5/8
φ
3/4
φ
7/8
φ
1-1/8
Liquid pipe
φ
3/8
φ
1/2
φ
5/8
φ
3/4
R
W
EYQ72
R
W
EYQ84
R
W
EYQ144
R
W
EYQ168
R
W
EYQ216
R
W
EYQ252
(Unit:
inch)
Example 1 Example 4
Example 2 Example 5
Example 3 Example 6
<72 72
≤
x<111
111
≤
x<246
246
≤
KHRP25M33H KHRP25M72H
KHRP25M73HU
KHRP26M22H, KHRP26M33H
KHRP26M33H KHRP26M72H
KHRP26M73HU
Indoor
capacity inde
x
Refrig
erant branc
h kit name
In case of 3-tube piping
In case of 2-tube piping
2 unit 3 unit
BHFP26MA56U BHFP26MA84U
BHFP22MA56U BHFP22MA84U
Number of units
of outside unit
Heat reco
ver
y system
Heat pump system
<72 72
≤
x<111
111
≤
x<246
246
≤
KHRP25M22T KHRP25M33T
KHRP25M72TU KHRP25M73TU
KHRP26M22T KHRP26M33T
KHRP26M72TU KHRP26M73TU
Indoor
capacity inde
x
Refrig
erant branc
h kit name
In case of 3-tube piping
In case of 2-tube piping
Piping betw
een outside br
anches (par
t B)
•
Select the siz
e from the f
ollo
wing tab
le based on the total capacity
of the outside unit to be connected to upstream
Capacity type
of outside unit
Piping siz
e (outer diameter)
Suction gas pipe
φ
1-1/8
Disc
har
g
e gas pipe
φ
7/8
Liquid pipe
φ
1/2
φ
5/8
R
W
EYQ144
R
W
EYQ168
(Unit:
inch)
Piping betw
een outside br
anch and outside unit (par
t C)
Capacity type
of outside unit
Piping siz
e (outer diameter)
Suction gas pipe
φ
3/4
φ
7/8
Disc
har
g
e gas pipe
φ
5/8
φ
3/4
Liquid pipe
φ
3/8
R
W
EYQ72
R
W
EYQ84
(Unit:
inch)
Piping siz
e increase in case of long piping
•
When the equiv
alent length is 262.5 ft or more
, it is necessar
y to
increase the siz
e of the main pipe of liquid piping side
.
•
When the equiv
alent length is 262.5 ft or more
, do not increase the siz
es
of discharge and suction gas pipes
.
(Unit:
inch)
(Unit:
lbs)
Indoor unit
capacity type
Piping siz
e (outer diameter)
Suction gas pipe
φ
1/2
φ
5/8
φ
7/8
φ
1-1/8
φ
1-1/4
Disc
har
g
e gas pipe
φ
3/8
φ
1/2
φ
3/4
φ
1-1/8
Liquid pipe
φ
1/4
φ
3/8
φ
1/2
φ
5/8
φ
3/4
<24 24
≤
x<72
72
≤
x<111
111
≤
x<162
162
≤
x<246
246
≤
(Unit:
inch)
B1
B1
B2
B3
B4
n
p
o
H2
c d
e f
g h
i
j
k
l
n
p
o
u
t
s
r
H3
H2 H1
H3
H1
H2
A
B
A
AB
CDE
B
F
AB
C
D
E
G
FG