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8-7/16
25/32
1-17/32
1-9/16
2-1/8
5-15/16
2-15/32
Service Cover for
Electronic Expansion Valve
Low Pressure
Gas Pipe Connection
(
φ
3/4 Flare Nut)
Gas Pipe Connection
(
φ
A Flare Nut)
High/Low Pressure
Gas Pipe Connection
(
φ
5/8 Flare Nut)
Service Cover for
Electrical Box
Electrical Box
(Available for
Both Sides)
Outdoor Unit Connecting Side
1-1/2
11-27/32
1-1/2
14-13/16
Unit: inch
3-7/32
3-1/2
11-27/32
B
7-3/32
7-17/32
4-3/8
31/32
Indoor Unit Connecting Side
Ha
a
c
b
L
Hb
Indoor
Unit
Indoor
Unit
Indoor
Unit
Upstream
Downstream
Change-Over
Box
Change-Over
Box
Indoor
Unit
Indoor
Unit
Upstream
Multi-Kit
Downstream
Low Pressure
Gas Pipe
High/Low Pressure
Gas Pipe
Change-Over
Box
Gas Pipe
Service Manual
1-103
INSTALLATION
5.2 Refrigerant Piping Work
3URYLGHWKHUHIULJHUDQWSLSHLQWKH¿HOG
Make sure that the refrigerant pipe is connected to the same refrigerant cycle unit.
(1) Position of Piping Connection
(2) Selecting Piping Size
(a) Select the size for the high/low pressure gas pipe, low pressure gas pipe and gas pipe according
to Table 5.1. The size depends on the indoor unit total capacity connected downstream of the
Change-Over Box.
(b) When the piping size from Table 5.1 and the piping connection size for Change-Over Box from Table
5.2 are different, use an accessory pipe according to the item 5.2(3).
(c) As for the multi-kit branch or header branch, refer to the Technical Manual for the Outdoor Unit.
Dimension
Model
A
B
COBS048B21S
5/8
3-1/2
COBS096B21S
3/4
3-25/32
Ɣ 3LSLQJ:RUNIRU&KDQJH2YHU%R[
Perform piping work for the Change-Over Box according to the following table.
Condition of Piping Work
Item
Allowable Piping Length
Total Piping Length between
Change-Over Box and Indoor Unit
L
a+b+c
COBS048B21S
within 98 ft (30m)
COBS096B21S
within 32 ft (10m)
Height Difference between
Indoor Units Connected to the Same Change-Over Box
Ha
within 13 ft (4m)
Height Difference between Change-Over Boxes
Hb
within 49 ft (15m)
Table 5.1 Connected Indoor Unit Capacity and Piping Size
Model
Connected
Indoor Unit
Capacity
Low
Pressure
Gas Pipe
High/Low
Pressure
Gas Pipe
Gas Pipe
x1000Btu/h
inch (mm)
inch (mm)
inch (mm)
COBS048B21S
6~17
݊
(15.88)
݊
(12.7)
݊
(12.7)
7
18~29
݊
(15.88)
݊
(12.7)
݊
(15.88)
30~41
݊
(19.05)
݊
(15.88)
݊
(15.88)
COBS096B21S
42~59
݊
(19.05)
݊
(15.88)
݊
(19.05)
60~71
݊
(22.2)
݊
(19.05)
݊
(22.2)
7
: When a branch is located downstream of the Change-Over Box
and also the connected indoor unit capacity is 6~17kBtu/h, use
݊LQFK݊PPIRUWKHJDVSLSH
Table 5.2 Piping Connection Size for Change-Over Box
Model
Low
Pressure
Gas Pipe
High/Low
Pressure
Gas Pipe
Gas Pipe
inch (mm)
inch (mm)
inch (mm)
COBS048B21S
݊
(19.05)
݊
(15.88)
݊
(15.88)
COBS096B21S
݊
(19.05)
݊
(15.88)
݊
(19.05)
Содержание YVAHP072B31S
Страница 2: ......
Страница 10: ...viii Service Manual ...
Страница 16: ......
Страница 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Страница 559: ...Service Manual 1 543 INSTALLATION 7 7RXFK DFN WR QLVK WKLV VHWWLQJ The screen returns to the Service Menu screen 7 ...
Страница 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Страница 920: ......
Страница 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Страница 983: ...Service Manual 2 63 OPERATION Clipped Ceiling Type Grille for Front Discharge 2SWLRQDO Decorative Panel 2SWLRQDO ...
Страница 1184: ...2 264 Service Manual OPERATION 7 Touch on Return to Group sel to return to Setting Group Selection 7 ...
Страница 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Страница 1425: ...Service Manual 3 111 TROUBLESHOOTING Surge Absorber SA Surge Absorber SA Surge Absorber SA 3RVLWLRQ RI 6XUJH EVRUEHU 9 9 1 1 1 ...
Страница 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Страница 1657: ...Service Manual 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting ...
Страница 1728: ......
Страница 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Страница 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Страница 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
Страница 1795: ......
Страница 1796: ... 2015 Johnson Controls Inc SM 15001 ...