Panasonic PAW-160MAH2L, Installation Instructions Manual

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44
AHU Kit – Installation Instructions – 09/2021
Product description
3
AHU DX coil additional refrigerant charge: 0.83 kg/dm
3
Refrigerant charge at shipment is sufficient for AHU DX coil volume up to 1,4 dm
3
Total additional refrigerant charge calculation
((1.7 dm
3
– 1.4 dm
3
) x 0.83 kg/dm
3
) + (10 m x 0.035 kg/m) = 0.249 kg + 0.35 kg = 0.599 kg
Calculation example for number of passes in the heat exchanger
The minimum number of passes in the AHU heat exchanger is restricted. The limit is calculated by
the formula:
Minimum number of passes
= Number of steps × Distance between tube sheets × Number of rows × 1.5 × 10
–4
The calculated value must then be rounded up to the next integer number.
Example
Number of steps: 12
Distance between tube sheets: 1,000 mm
Number of row: 3
Minimum number of passes = 12 × 1,000 x 3 × 1.5 × 10
–4
= 5.4
This value must be rounded up to 6.
This means that the minimum number of passes is 6 passes.
Technical data and limitations – PACi NX systems – R32
AHU Kit PAW-280PAH3M
Outdoor unit – PACi NX Standard U-36PZ3E5 U-50PZ3E5 U-60PZ3E5A U-71PZ3E5A U-100PZ3E5/8 U-125PZ3E5/8 U-140PZ3E5/8
Nominal cooling capacity kW 3.6 5.0 6.0 7.1 10.0 12.5 14.0
Nominal heating capacity kW 3.6 5.0 6.0 7.1 10.0 12.5 14.0
Piping connections Liquid pipe Inch (mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
Gas pipe Inch (mm) 1/2 (12.70) 1/2 (12.70) 1/2 (12.70) 5/8 (15.88) 5/8 (15.88) 5/8 (15.88) 5/8 (15.88)
Piping length Min / Max m 3 / 15 3 / 20 3 / 40 3 / 40 5 / 50 5 / 50 5 / 50
Precharged length ( R32 ) Max m 7.5 7.5 30 30 30 30 30
Additional refrigerant charge ( R32 ) due to extended piping
length
g/m 0.01 0.015 0.015 0.017 0.045 0.045 0.045
Ambient temperature Cooling (Min / Max) °C DB -10 / +43 -10 / +43 -10 / +43 -10 / +43 -10 / +43 -10 / +43 -10 / +43
Heating (Min / Max) °C WB -15 / +24 -15 / +24 -15 / +24 -15 / +24 -15 / +24 -15 / +24 -15 / +24
AHU unit under “standard conditions”
Air volume flow Cooling (Min / Max) m³/h 540 / 870 630 / 990 780 / 1,320 780 / 1,320 900 / 2,160 1,140 / 2,280 1,200 / 2,400
Air intake temperature
1
Cooling (Min / Max) °C DB 18 / 32 18 / 32 18 / 32 18 / 32 18 / 32 18 / 32 18 / 32
°C WB 14 / 25 14 / 25 14 / 25 14 / 25 14 / 25 14 / 25 14 / 25
Heating (Min / Max) °C DB 16 / 30 16 / 30 16 / 30 16 / 30 16 / 30 16 / 30 16 / 30
AHU DX coil heat exchanger volume Min / Max dm
3
1.00 / 1.121 1.00 / 1.121 1.3 / 1.4 1.3 / 1.4 1.7 / 1.9 1.7 / 1.9 1.7 / 1.9
Heat exchanger face area Min / Max m
2
– / – – / – 0.43 / 0.51 0.43 / 0.51 0.43 / 0.51 0.43 / 0.51 0.43 / 0.51
AHU unit under “special conditions A
2
”
Air volume flow,
subject to restrictions
2
Cooling (Min / Max) m³/h 540 / 870 630 / 1,000 780 / 1,450 780 / 1,600 900 / 2,300 1,140 / 2,520 1,200 / 2,640
Air intake temperature
1
Cooling (Min / Max) °C DB 18 / 32 18 / 30 18 / 30 18 / 30 18 / 30 18 / 30 18 / 30
°C WB 14 / 25 14 / 25 14 / 25 14 / 25 14 / 25 14 / 25 14 / 25
Heating (Min / Max) °C DB 16 / 30 16 / 30 16 / 30 16 / 30 16 / 30 16 / 30 16 / 30
AHU unit under “special conditions B
3
”
AHU DX coil heat exchanger volume,
subject to restrictions
3
Min / Max dm
3
1.00 / 1.2 1.0 / 1.2 1.3 / 1.6 1.3 / 1.6 1.7 / 2.6 1.7 / 2.6 1.7 / 2.8
Additional refrigerant charge ( R32 ) due to larger heat
exchanger volume
kg/dm
3
0.83 0.83 0.83 0.83 0.83 0.83 0.83
Max. additional refrigerant charge ( R32 ) kg 0.07 0.07 0.17 0.17 0.58 0.58 0.74
Max. pipe length m 7.5 15 25 30 35 35 35
Max. ambient temp. for pump down °C DB n/a 30 30 30 30 30 30
Continued on the following page. See footnotes overleaf.
NX
22.07.2021, cH
- U-60/70PZ3E5 A and their technical data (from the
Service Manual) used instead of U-60/70PZ3E5.
- “Cooling/Heating min/max temperatures”, “Heat
exchanger face area” and “Air intake temperature
(under special conditions A)” simply copied from
the PZ2/PZH2 models.
- Footnotes simply copied from the PZ2/PZH2 mod-
els
27.07.2021, JW: OK
02.08.2021, cH
- “AHU DX coil heat exchanger volume (min./max.)
under standard conditions” inserted as per Corr.
JW of 27.07.2021
- “Air volume flow” for U-50PZ3E5 changed from
990 (as per “PACi_NX_AHUlimits_v1.xlsx“) to
1,000 (as per Corr. JW of 27.07.2021)
- “AHU DX coil heat exchanger volume (min./max.)
under special conditions B” and “Additional re-
frigerant charge due to larger heat exchanger vol-
ume inserted as per Corr. JW of 27.07.2021
06.08.2021, JW: OK