Panasonic PAW-280PAH3M-1 Installation Instructions Manual page 45

AHU Kit
Outdoor unit – PACi NX Elite
Nominal cooling capacity
Nominal heating capacity
Piping connections Liquid pipe
Gas pipe
Piping length Min / Max
Precharged length (R32) Max
Additional refrigerant charge (R32) due to extended piping
length
Ambient temperature Cooling (Min / Max) °C DB
Heating (Min / Max) °C WB
AHU unit under "standard conditions"
Air volume flow Cooling (Min / Max) m³/h
Air intake temperature Cooling (Min / Max) °C DB
1
Heating (Min / Max) °C DB
AHU DX coil heat exchanger volume Min / Max
Heat exchanger face area Min / Max
AHU unit under "special conditions A "
2
Air volume flow, Cooling (Min / Max) m³/h
subject to restrictions
2
Air intake temperature Cooling (Min / Max) °C DB
1
Heating (Min / Max) °C DB
AHU unit under "special conditions B "
3
AHU DX coil heat exchanger volume, Min / Max
subject to restrictions
3
Additional refrigerant charge (R32) due to larger heat
exchanger volume
Max. additional refrigerant charge (R32)
Max. pipe length
Max. ambient temp. for pump down
Outdoor unit
PACi NX Standard
U-36PZ3E5
U-50PZ3E5
U-60PZ3E5
U-71PZ3E5
U100-PZ3E5/8
U125-PZ3E5/8
U140-PZ3E8
PACi NX Elite
U-36PZH3E5
U-50PZH3E5
U-60PZH3E5
U-71PZH3E5/8
U-100PZH3E5/8
U-125PZH3E5/8
U-140PZH3E5/8
Maximum allowed air volume flow under
"Standard conditions"
1 Air intake temperature entering the AHU DX coil heat exchanger
2 Special conditions A: Using an AHU unit with a higher maximum allowed air volume flow is subject to a restriction of the
"Air intake temperature" to 30 °C DB (instead of 32 °C WB under standard conditions).
3 Special conditions B: Using an AHU DX coil heat exchanger with a larger volume is subject to the following restrictions:
●
●
●
Note: The AHU DX coil must be designed according to Panasonic specification.
Calculation example for total additional refrigerant charge (R32)
Unit: U-71PZH3E5
Pipe length: 40 metres
AHU DX coil (supplied by AHU manufacturer): 2.0 dm³
Refrigerant charge at shipment fitted for pipe length within 30 m
AHU Kit – Installation Instructions – 11/2021
U-36PZH3E5
kW 3,6
kW 3,6
Inch (mm) 1/4 (6,35)
Inch (mm) 1/2 (12,70)
m 3 / 40
m 30
g/m 0,015
-15 / +46
-20 / +24
540 / 870
18 / 32
°C WB 14 / 25
16 / 30
dm3 1.0 / 1.3
m2 – / –
540 / 900
18 / 32
°C WB 14 / 25
16 / 30
dm 1.0 / 1.5
3
kg/dm 0.83
3
kg 0.17
m 25
°C DB n/a
Higher maximum allowed air volume flow under "Special conditions A
Maximum allowed air intake temperature at AHU DX coil heat exchanger in cooling mode is restriced to 30 °C DB.
an additional refrigerant charge (R32), which is required irrespective of an additional refrigerant charge
which might be needed due to an extended piping length (see calculation example below)
AND a reduced maximum pipe length
AND an ambient air temperature limit above which it may not be possible to pump down the complete
refrigerant charge (including all additional refrigerant) into the outdoor unit.
PAW-280PAH3M(-1)
U-50PZH3E5 U-60PZH3E5 U-71PZH3E5/8 U-100PZH3E5/8 U-125PZH3E5/8 U-140PZH3E5/8
5 6 7,1
5 6 7,1
1/4 (6,35) 1/4 (6,35) 3/8 (9,52)
1/2 (12,70) 1/2 (12,70) 5/8 (15,88)
3 / 40 3 / 40 5 / 50
30 30 30
0,015 0,015 0,045
-15 / +46 -15 / +46 -15 / +46
-20 / +24 -20 / +24 -20 / +24
510 / 990 780 / 1,320 780 / 1,320
18 / 32 18 / 32 18 / 32
14 / 25 14 / 25 14 / 25
16 / 30 16 / 30 16 / 30
1.0 / 1.3 1.1 / 1.4 1.2 / 1.8
– / – – / – – / –
630 / 1,080 780 / 1,600 780 / 1,740
18 / 32 18 / 30 18 / 30
14 / 25 14 / 25 14 / 25
16 / 30 16 / 30 16 / 30
1.0 / 1.5 1.1 / 1.8 1.2 / 2.2
0.83 0.83 0.83
0.17 0.33 0.33
25 18 40
n/a 30 30
Air volume flow m³/h
":
2
Product description
10 12,5 14
10 12,5 14
3/8 (9,52) 3/8 (9,52) 3/8 (9,52)
5/8 (15,88) 5/8 (15,88) 5/8 (15,88)
5 / 85 5 / 85 5 / 85
30 30 30
0,045 0,045 0,045
-20 / +48 -20 / +48 -20 / +48
-20 / +24 -20 / +24 -20 / +24
900 / 2,160 1,140 / 2,280 1,200 / 2,400
18 / 32 18 / 32 18 / 32
14 / 25 14 / 25 14 / 25
16 / 30 16 / 30 16 / 30
1.7 / 2.1 1.7 / 2.1 1.7 / 2.1
0.43 / 0.51 0.43 / 0.51 0.43 / 0.51
900 / 2,610 1,140 / 3,480 1,200 / 3,480
18 / 30 18 / 30 18 / 30
14 / 25 14 / 25 14 / 25
16 / 30 16 / 30 16 / 30
1.7 / 3.0 1.7 / 3.0 1.7 / 3.0
0.83 0.83 0.83
0.74 0.74 0.74
65 65 65
30 30 30
3
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