Daikin VRV III REYQ8PY1B, Installation Manual

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Outdoor unit multi connection piping kit and Refrigerant branch kit selection Pipe size selection
•
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 supplyed).
How to select the REFNET joint Piping between outdoor unit (*2) and refrigerant branch kit (part A)
How to select the REFNET header
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) Choose from the following table in accordance with the outdoor unit system capacity type.
Piping between outdoor unit multi connection piping kit and outdoor unit (part C) Temper grade and wall thickness for pipes (Temper grade, O type and 1/2H type indicate the material type specified in JIS H 3300.)
Choose from the following table in accordance with the capacity type of the outdoor unit connected.
Piping between outdoor unit multi connection piping kits (part B)
Choose from the following table in accordance with the total capacity of all the outdoor units connected upstream.
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.
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.
Outdoor unit capacity type
8,10HP type 12~22HP type 24HP type ~
Indoor unit total capacity index
x < 200 200
≤
x < 290
290
≤
x < 640
640
≤
x
Refrigerant branch kit name KHRP25A33T KHRKHRP25M72TP KHRKHRP25M73TP
3 pipes
KHRP25A22T KHRP25A33T KHRKHRP25M72TP KHRKHRP25M73TP
2 pipes
KHRP26A22T KHRP26A33T KHRP26A72T
Refrigerant branch kit name
Indoor unit total capacity index
x < 200 200
≤
x < 290
290
≤
x < 640
640
≤
x
Number of outdoor unit
2 units 3 units
Connecting piping kit name
BHFP26P90 BHFP26P136
3 pipes
KHRP25M33H KHRKHRP25M72HP KHRKHRP25M73HP
2 pipes
KHRP26M22H or KHRP26M33H KHRP26M33H KHRP26M72H KHRKHRP26M73HP
Refrigerant branch kit name
Example for indoor units connected downstream
Example REFNET joint C : Indoor units 5 + 6 + 7 + 8
Example REFNET joint B : Indoor units 7 + 8 Example REFNET header : Indoor units 1 + 2 + 3 + 4 + 5 + 6
Example REFNET header :
Indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
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.
<In case of single outdoor unit system>
<In case of multi outdoor unit system>
Equalizer pipe (part D)
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)
Piping between outdoor unit and refrigerant branch kit (part A)
Outdoor unit
Independent
unit 1
Independent
unit 2
Independent
unit 3
Outdoor unit 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
Piping size (O. D.) Piping size (O. D.)
Suction gas pipe
φ
19.1
φ
22.2
φ
28.6
φ
34.9
φ
41.3
HP/LP gas pipe
φ
15.9
φ
19.1
φ
22.2
φ
28.6
φ
34.9
Liquid pipe
φ
9.5
φ
12.7
φ
15.9
φ
19.1
Outdoor unit capacity type 8,10HP type 12HP type 14,16HP type Copper tube O. D. Temper grade Wall thickness (Min. requirement)
Suction gas pipe
φ
22.2
φ
28.6
HP/LP gas pipe
φ
19.1
φ
22.2
Liquid pipe
φ
9.5
×
0.8
φ
12.7
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
Piping between refrigerant branch kits Piping between refrigerant branch kit and BS unit Piping between BS unit and refrigerant branch kit
Choose from the following table in accordance with the total capacity type of all the indoor units connected downstream.
Piping between refrigerant branch kit, BS unit and indoor unit Equalizer pipe (part D) (multi outdoor unit system only)
Match to the size of the connection piping on the indoor unit.
*1 Connection piping must not exceed the refrigerant Piping size between outdoor unit and refrigerant branch kit (part A). *2 When selecting 2 pipes line (gas pipe and liquid pipe), use Suction gas pipe column for gas pipe and Liquid pipe column for liquid pipe.
Indoor capacity index
x < 150 150
≤
x < 200
200
≤
x < 290
290
≤
x < 420
420
≤
x < 640
640
≤
x < 920
920
≤
x
Suction gas pipe
φ
15.9
φ
19.1
φ
22.2
φ
28.6
φ
34.9
φ
41.3
HP/LP gas pipe
φ
12.7
φ
15.9
φ
19.1
φ
28.6
Liquid pipe
φ
9.5
φ
12.7
φ
15.9
φ
19.1
Indoor unit capacity type 20 · 25 · 32 · 40 · 50 type 63 · 80 · 100 · 125 type 200 type 250 type
gas pipe
φ
12.7
φ
15.9
φ
19.1
φ
22.2
Liquid pipe
φ
6.4
φ
9.5
Piping size (O. D.)
φ
19.1
(unit : mm) (unit : mm)
Piping size (O. D.)
(unit : mm)
Piping size (O. D.)
(unit : mm)
(unit : mm)
1/2H type
O type
01_EN_3P201178-4B.fm Page 7 Friday, May 18, 2007 7:58 PM