Daikin RXYTQ10T7YF, Инструкция по установке и эксплуатации

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5 Preparation
Installer and user reference guide
14
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388989-1B – 2016.02
5.3.4 About the piping length
Make sure to perform the piping installation within the range of the
maximum allowable pipe length, allowable level difference and
allowable length after branching as indicated below.
Definitions
Term Definition
Actual piping length Pipe length between outdoor
(a)
and indoor
units.
Equivalent piping
length
(b)
Pipe length between outdoor
(a)
and indoor
units.
Total piping length Total piping length from the outdoor
(a)
to all
indoor units.
H1 Difference in height between outdoor and
indoor units.
H2 Difference in height between indoor and
indoor units.
H3 Difference in height between outdoor and
outdoor units.
(a) If the system capacity is >16 HP, re-read "the first outdoor
branch as seen from the indoor unit".
(b) Assume equivalent piping length of refnet joint=0.5 m and
refnet header=1 m (for calculation purposes of equivalent
piping length, not for refrigerant charge calculations).
5.3.5 Piping length: VRV DX only
For system only containing VRV DX indoor units:
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
H3
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 Description
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
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