Daikin VRV IV+ RXYTQ8U7YF, Installer And User Reference Manual

Page: 15 / 64

5 Preparation
Installer and user reference guide
15
RXYTQ8~16U7YF
VRV IV+ heat pump for high ambient temperatures
4P561157-1 – 2018.09
System setup
Example Description
Example 1.1
a
A
h i j k l m n
B C D E F G
p
b c d e f
1 2 3 4 5 6 7
8
g
H1
H2
Single outdoor
Branch with refnet joint
Example 1.2
a
b
c d e f
i
k
j
g h
A B
1 2 3 4 5 6
7 8
H1
H2
Single outdoor
Branch with refnet joint
and refnet header
Example 1.3
a
c b d e f
i
g h
1 2 3 4 5 6 7
8
H1
H2
Single outdoor
Branch with refnet
header
Example 2.1
a
A
h i j k l m n
B C D E F G
p
b c d e f
1 2 3 4 5 6 7
8
g
t
u
r s
H1
H2
Multi outdoor
Branch with refnet joint
Example 2.2
a
j k
b
1 2 3 4 5 6
7 8
c d e f g h
t
u
r
s
B A
H1
H3
H2
Multi outdoor
Branch with refnet joint
and refnet header
Example 2.3
a
b
1 2 3 4 5 6 7
8
c d e f g h i
t
u
r
s
H1
H3
H2
Multi outdoor
Branch with refnet
header
Example 3
r s
u
t
With standard multi
layout
Indoor unit
Refnet joint
Refnet header
Outdoor multi connection piping kit
Maximum allowable length
▪ Between outdoor and indoor units (single installation/multi
combinations)
Actual piping
length 165 m /135 m
Example 1.1
▪ unit 8: a+b+c+d+e+f+g+p≤165 m
Example 1.2
▪ unit 6: a+b+h≤165 m
▪ unit 8: a+i+k≤165 m
Example 1.3
▪ unit 8: a+i≤165 m
Example 2.1
▪ unit 8: a+b+c+d+e+f+g+p≤135 m
Equivalent length 190 m /160 m
Total piping
length 1000 m /500 m
Example 1.1
▪ a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤1000 m
Example 2.1
▪ a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤500 m
▪ Between outdoor branch and outdoor unit (only in case >16 HP)
Actual piping
length 10 m
Example 3
▪ r, s, t≤10 m; u≤5 m
Equivalent length 13 m
Maximum allowable height difference
H1 ≤50 m (40 m) (if outdoor is located below indoor units)
Conditional extension up till 90 m is possible without
additional option kit:
▪ In case the outdoor location is higher than indoor:
extension is possible up till 90 m and following
2 conditions must be fulfilled:
▪ Liquid piping size up (see table "Size up" in "E: Piping
between refrigerant branch kit and indoor unit" on
page 13
).
▪ Dedicated setting on outdoor unit is required (see [2‑49]
in "7.2.8 Mode 2: Field settings" on page 35 ).
▪ In case the outdoor location is lower than indoor:
extension is possible up till 90 m and following
6 conditions must be fulfilled:
▪ 40~60 m: minimum connection ratio connected: 80%.
▪ 60~65 m: minimum connection ratio connected: 90%.
▪ 65~80 m: minimum connection ratio connected: 100%.
▪ 80~90 m: minimum connection ratio connected: 110%.
▪ Liquid piping size up (see table "Size up" in "E: Piping
between refrigerant branch kit and indoor unit" on
page 13
).
▪ Dedicated setting on outdoor unit is required (see [2‑35]
in "7.2.8 Mode 2: Field settings" on page 35 ).
H2 ≤30 m
H3 ≤5 m
Maximum allowable length after branch
The pipe length from the first refrigerant branch kit to the indoor unit
≤40 m.
Example 1.1: unit 8: b+c+d+e+f+g+p≤40 m
Example 1.2: unit 6: b+h≤40 m, unit 8: i+k≤40 m
Example 1.3: unit 8: i≤40 m