16
ENGLISH
Gas pipe
Gas pipe
Liquid pipe
Liquid pipe
HR Unit
High
Pressure
Gas Pipe
Liquid pipe
Low Pressure
Gas Pipe
1 2
3 4
Pipe
connection
From left
side
Pipe
connection
From right
side
Parallel
pipe
connection
Whenever connecting the indoor units with the HR unit, install the
indoor units in numerical order from No.1.
Ex) In case of installing 3 indoor units : No. 1, 2, 3 (O), No. 1, 2, 4 (X),
No.1, 3, 4 (X), No.2, 3, 4 (X).
CAUTION
!
1
st
HR Unit
2
nd
HR Unit
1
2
3
4
B8
(96k) (28k)
BG
1
2
3
4
B8
(76k)
(21k)
BH
Gas pipe Ø15.88 (5/8)
Liquid pipe Ø9.52 (3/8)
Brazing Type
1 2
3 4
Remove caps on
The brazing part.
Liquid pipe
Low pressure gas pipe
High pressure gas pipe
HR unit
PRHR022
PRHR022A
PRHR032
PRHR032A
PRHR042
PRHR042A
Low pressure
gas pipe
Ø 22.2 (7/8)
Ø 28.58 (1-1/8)
Ø 28.58 (1-1/8)
High pressure
gas pipe
Ø 19.05 (3/4)
Ø 22.2 (7/8)
Ø 22.2 (7/8)
Liquid pipe
Ø 9.52 (3/8)
Ø 12.7 (1/2)
Ø 15.88 (5/8)
Installation of Zoning Control
Some indoor unit can be connected to one port of HR unit.
HR unit
HR unit
sealing
Changeover under control
Auto changeover
Changeover under control
Zoning control group 1
Zoning control group 2
(Max. 8 Indoor Units)
(Max. 8 Indoor Units)
WARNING
• A branch pipe of HR unit allows up to 14.1 kW (48 kBtu/h) based
on cooling capacity of the indoor unit.
(up to 14.1 kW (48 kBtu/h) for max installation)
• The maximum total capacity of indoor units connected to a
PRHR042 or PRHR042A HR unit is 56.4 kW (192 kBtu/h).
• The maximum number of indoor units connected to a PRHR042
or PRHR042A HR unit are 32 indoor units. (The Maximum indoor
units per a branch pipe of HR unit are 8 indoor units)
• There is not operate “Auto-changeover” & “Mode override”
function in the zoning group.
• When there are operating indoor units on cooling(heating) mode,
another indoor units aren’t changed on heating(cooling) mode in
the zoning group.
!
Joint Method of HR Unit (Big Duct : ARNU76GB8-,
ARNU763B8-, ARNU96GB8-, ARNU963B8-)
Joint Method is required when the big duct chassis is installed. In Joint
Method, two neighboring outlets of one HR unit are linked by Y branch
pipe and connected to one indoor unit.
Type of HR Unit
Select an HR unit according to the number of the indoor units to be
installed. HR units are classified into 3 types by the number of
connectable indoor units.
Ex) Installation of 6 indoor units
Consists of HR unit for 4 branches and HR unit for 2 branches.
PRHR032 or PRHR032A
(3 branches)
PRHR022 or PRHR022A
(2 branches)
1
2
1
3
2
PRHR042 or PRHR042A
(4 branches)
1 2
3 4
Installation of Outdoor Unit, HR Unit, Indoor Unit
Refrigerant Pipe
3 pipes are connected to the HR unit from the outdoor unit, classified
into liquid pipe, low pressure gas pipe and high pressure gas pipe
depending on status of refrigerant passing through the pipe.
You must connect 3 pipes from outdoor unit to HR unit.
For connection between indoor unit and HR unit, you must connect
both liquid pipe and gas pipe from the HR unit to the indoor unit. In this
case, connect them to the indoor unit starting from No.1 connection
port of the HR unit (the port number is displayed on ports of the HR
unit). Use auxiliary flare as annexed parts in connection to the indoor
unit.
[Unit : mm (inch)]
Summary of Contents for Multi V 5 ARUM080LTE5
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