Daikin REYQ14PY1B [133/137] Installation
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Daikin REYQ14PY1B [133/137] Installation

Daikin REYQ16PY1B [133/137] Installation
• Outdoor Units • VRV HEAT RECOVERY • REYQ8-48P7Y1B
1
8
• VRV Systems • Outdoor Units
132
8 Installation
8 - 3 Refrigerant pipe selection
3P201178-3B
1/2H type
O type
Temper grade
(Temper grade, O type and 1/2H type indicate the material type specified in JIS H 3300.)
Temper grade and wall thickness for pipes
(unit : mm)
Liquid pipeHP/LP gas pipe
Piping size (O. D.)
Indoor capacity index
(unit : mm)
column for gas pipe and Liquid pipe column for liquid pipe.
*2 When selecting 2 pipes line (gas pipe and liquid pipe), use Suction gas pipe
unit and refrigerant branch kit (part A).
*1 Connection piping must not exceed the refrigerant Piping size between outdoor
Choose from the following table in accordance with the total capacity type of all the
indoor units connected downstream.
Piping between refrigerant branch kits
Piping between refrigerant branch kit and BS unit
Piping between BS unit and refrigerant branch kit
Liquid pipeHP/LP gas pipeSuction gas pipe
(unit : mm)
Outdoor unit
capacity type
Choose from the following table in accordance with the total capacity of all
the outdoor units connected upstream.
Piping between outdoor unit multi connection piping kits (part B)
Piping between outdoor unit (*2) and refrigerant branch kit (part A)
Example REFNET header :
Indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
Example REFNET joint B : Indoor units 7 + 8
Example REFNET header : Indoor units 1 + 2 + 3 + 4 + 5 + 6
2 units
3 units
2 pipes3 pipes
Refrigerant branch kit name
Indoor unit total capacity index
How to select the REFNET header
2 pipes3 pipes
Refrigerant branch kit name
Refrigerant branch kit name
24HP type ~
12~22HP type
8,10HP type
Outdoor unit capacity type
When using REFNET joint at the first branch counted from the outdoor unit side,
choose from the following table in accordance with the outdoor unit capacity type.
(Example : REFNET joint A)
Equalizer pipe
(part D)
Independent
unit 1
Independent
unit 2
Independent
unit 3
<In case of multi outdoor unit system>
Outdoor unit
The thickness of the pipes in the table shows
the requirements of Japanease High Pressure
Gas Controll low. (As of Jan. 2003)The
thickness and material shall be selected in
accordance with local code.
Pipe size selection
Outdoor unit multi connection piping kit and
Refrigerant branch kit selection
•
•
•
Piping between outdoor unit multi connection piping kit and outdoor unit (part C)
Choose from the following table in accordance with the capacity type of
the outdoor unit connected.
x < 200
200 ≤ x < 290
290
≤ x < 640
640 ≤
x
KHRQ23M29T
KHRQ23M64T
KHRQ23M75T
KHRQ23M20T
KHRQ23M29T
KHRQ23M64T
KHRQ23M75T
KHRQ22M20T
KHRQ22M29T
KHRQ22M64T
x < 200
200 ≤ x < 290
290 ≤ x < 640
640 ≤ x
BHFQ23P907
BHFQ23P1357
KHRQ23M29H
KHRQ23M64H
KHRQ23M75H
KHRQ22M29H
KHRQ22M29H
KHRQ22M64K
KHRQ22M75H
Piping size (O. D.)
Piping size (O. D.)
φ
19.1
φ
22.2
φ28.6
φ34.9
φ41.3
φ
15.9
φ
19.1
φ
22.2
φ28.6
φ34.9
φ9.5
φ12.7
φ
15.9
φ19.1
Outdoor unit
capacity type
8,10HP type
12HP type
14,16HP type
Wall thickness
(Min. requirement)
Suction gas pipe
φ22.2
φ28.6
HP/LP gas pipe
φ19.1
φ
22.2
Liquid pipe
φ9.5
×
0.8
φ12.7
φ
6.4
0.80
φ
9.5
0.80
φ
12.7
0.80
φ
15.9
0.99
φ
19.1
0.80
φ
22.2
0.80
φ
25.4
0.88
φ
28.6
0.99
φ
31.8
1.10
φ
34.9
1.21
φ
38.1
1.32
φ
41.3
1.43
x < 150
150 ≤ x < 200
200 ≤ x < 290
290
≤ x < 420
420
≤
x < 640
640 ≤ x < 920
920
≤
x
φ
15.9
φ19.1
φ22.2
φ28.6
φ34.9
φ41.3
φ12.7
φ15.9
φ19.1
φ28.6
φ
9.5
φ12.7
φ15.9
φ19.1
20 · 25 · 32 · 40 · 50 type
63 · 80 · 100 · 125 type
200 type
250 type
φ12.7
φ15.9
φ19.1
φ22.2
φ
6.4
φ9.5
φ19.1
(unit : mm)
Refrigerant branch kits can only be used with R410A.
When multi outdoor system are installed, be sure to use the
special separately sold Outdoor unit multi connection piping
kit. (BHFP26P90 · 136).
(For how to select the proper kit, follow the table at right.)
Never use BHFP26M90 · 135, BHFP22M90 · 135P for M
type of this series or T joint (field supplied).
Example for indoor units
connected downstream
<In case of single outdoor unit system>
Piping between outdoor unit and
refrigerant branch kit (part A)
Piping between outdoor
unit multi connection piping
kit and outdoor unit (part C)
Piping between outdoor unit multi
connection piping kits (part B)
Piping between outdoor unit and
refrigerant branch kit (part A)
How to select the REFNET joint
Choose the REFNET joints other than the first branch from the following table in accordance
with the total capacity index of all the indoor units connected below the REFNET joint.
Indoor unit total capacity index
Choose from the following table in accordance with the total capacity index of all
the indoor units connected below the REFNET header.
250 type indoor unit can not be connected below the REFNET header.
How to select the outdoor unit multi connection piping kit
(This is required when the system is multi outdoor unit system.)
Choose from the following table in accordance with the number of outdoor units.
Number of outdoor unit Connecting piping kit name
Example REFNET joint C : Indoor units 5 + 6 + 7 + 8
Choose from the following table in accordance with the outdoor unit system capacity type.
8HP type
10HP type
12HP type
14,16HP type
18HP type
20,22HP type
24HP type
26~34HP type
36HP type
38~48HP type
Suction gas pipe
Piping between refrigerant branch kit, BS unit and indoor unit
Match to the size of the connection piping on the indoor unit.
Indoor unit capacity type
Piping size (O. D.)
gas pipe
Liquid pipe
Equalizer pipe (part D) (multi outdoor unit system only)
(unit : mm)
Copper tube O. D.
Piping size (O. D.)

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