Example Of Connection (R-410A Type) - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C

5. Example of Connection (R-410A Type)

Example of connection
(Connection of 8 indoor units)
(*1) " " Indicate the Outdoor unit
multi connection piping kit.
(*2) In case of multi outdoor system, re-
read "outdoor unit" to "Outdoor unit
multi connection piping kit" as seen
from the indoor unit.
Between outdoor unit (*2) and
indoor unit
Maximum
allowable
length
Between outdoor unit and function unit
Between outdoor unit and outdoor unit
multi connection piping kit
Between outdoor and indoor units Difference in height Difference in height between outdoor unit and indoor unit (H1) ≤ 50m (Max 40m if the outdoor unit is below)
Between indoor and indoor units Difference in height Difference in height between indoor units (H2) ≤ 15m
Allowable
height
Between outdoor and outdoor units Difference in height Difference in height between outdoor units (H3) ≤ 5m
difference
Between outdoor unit and function unit Difference in height Difference in height between outdoor unit and function unit (H4) ≤ 1m
Allowable length after the branch
Appendix
Branch with REFNET joint
Function unit
Outdoor unit
a
REFNET joint
b
Single (A~G)
outdoor
system
c d e f
A B C D E
r
i j k m
1 2 3 4 5
1 ~ 8 : Indoor unit
Outdoor unit
Function unit
r
a
b REFNET joint
Multi
s
(A~G)
outdoor
system
c d e f
A B C D E
r
i j k m
1 2 3 4 5
1 ~ 8 : Indoor unit
Pipe length between outdoor unit (*2) and indoor unit ≤ 165m
Actual pipe
length Example 8 : a + b + c + d + e + f + g +h +q ≤ 165m
Equivalent pipe length between outdoor unit (*2) and indoor unit ≤ 190m (Note 1)
Equivalent
length (Assume equivalent pipe length of REFNET joint to be 0.5m, that of REFNET header to be 1m, that of function unit to be 6m for calculation purposes)
Total extension length Total piping length from outdoor unit (*2) to all indoor unit ≤ 500m
Actual and Actual pipe length from outdoor unit to function unit, that from first outdoor unit multi connection piping kit to outdoor unit 10m
Equivalent Equivalent pipe length from outdoor unit to function unit, that from first outdoor unit multi connection piping kit to outdoor unit 13m
pipe length
Actual pipe length from first refrigerant branch kit (either REFNET joint or REFNET header) to indoor unit ≤ 40m (Note 2)
Actual pipe
length Example 8 : c + d + e + f + g + h + q ≤ 40m
Branch with REFNET joint and header
Outdoor
Function unit
unit
a
b
g h
REFNET
F G
header
n p q
d e f
6 7
1 2 3
8
1 ~ 8 : Indoor unit
Outdoor unit
Function unit
r
a
b
s
g h
REFNET
header
F G
n p q
d e f
1 2
6 7
8
1 ~ 8 : Indoor unit
Example 6 : a + b + c + i ≤ 165m, 8 : a + b + j + r ≤ 165m Example 8 : a + b + j ≤ 165m
Example 6 : c + i ≤ 40m, 8 : j + r ≤ 40m
Branch with REFNET header
Outdoor
unit
REFNET joint
a
(A, B)
j
A B
c
r
k
7 8
c d
g h i
1 2
4 5 6
1 ~ 8 : Indoor unit
Outdoor unit
REFNET joint
r
(A, B)
j
s
A B
c
r
k
7 8
g h i c d
1
3 4 5 6
1 ~ 8 : Indoor unit
Outdoor unit
s r
Example 8 : j ≤ 40m

Example of Connection (R-410A Type)

Function unit
REFNET header
b
e f g h i j
3 4 5 6 7
8
Function unit
a
b
REFNET header
e f g h i j
2 3 4 5 6 7
8
Function unit
a ≤ 10m
(Equivalent length ≤ 13m)
r ≤ 10m
(Equivalent length ≤ 13m)
a
s ≤ 10m
(Equivalent length ≤ 13m)
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