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12
AHU Kit – Installation Instructions –
11/2021
General information and safety notes
1
Density limit diagrams
The following diagrams roughly demonstrate the relation between the amount of refrigerant
charged for the relevant R32 PACi or PACi NX outdoor units ([mc]) and the required minimum
installation space floor area.
AHU units
For the AHU units, the density limit diagram shows three different “Density Limit Lines”, where each
line applies to a different AHU unit installation height and installation orientation (horizontal/vertical)
as follows:
Installation height of indoor unit (h
0
)
Indoor unit type
Density limit
line
h
0
≥ 2.2 m
AHU unit (horizontal installation)
Line 1
1.8 m ≤ h
0
< 2.2 m
AHU unit (horizontal installation)
Line 2
h
0
< 1.8 m
AHU unit (vertical installation)
Line 3
h
0
≥ 2.2 m
Indoor unit
Indoor unit
Indoor unit
In the ceiling
In the ceiling
In the room
In a false ceiling with change in ceiling
height
1.8 m ≤ h
0
< 2.2 m
0.25 m ≤ h
0
< 1.8 m
2.0
1.5
1.0
1.22
7.90
0.5
0.0
3.0
4.0
2.5
3.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0 8.5
4.5
0
50
100
150
200
250
300
350
400
500
450
550
[A
min
]: minimum indoor floor area (m
2
)
[m
c
]: refrigerant charge (kg) of the outdoor unit
Line 3
Line 2
Line 1
02.06.2021, JW
Please note that meanwhile the standards changed
and also the manuals for the PACi 2-series changed
and the diagrams used are the “3-line” diagrams.
So could you as well update those “3-line” dia-
grams for the U-xxPZ(H)2 range as well? In fact we
need to add pages 10 & 11 from SBPAC2009004CE.
pdf before the specific OU model diagrams, it is
same as per this document pages 20 & 21, which is
valid for all PACi R32 (2-sereis and new NX 3-series)
22.07.2021, cH
Changes required by Corr. JW of 02.06.2021 for this
section inserted to the best of my understanding.
Please check for correctness.
02.08.2021, cH
- h
inst
=> h
0
(for more clarity/uniformity)
06.08.2021, JW: OK
Содержание PAW-280PAH3M-1
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