AERMEC NXW 0503 – 1654 Water Cooled Heat Pump Reversible Water Side Owner’s Manual

: July 26, 2024
: AERMEC

Table of Contents

AERMEC NXW 0503 – 1654 Water Cooled Heat Pump Reversible Water Side
Product Usage Instructions
FAQ
FEATURES
CONTROL PCO
ACCESSORIES
Antivibration
CONFIGURATOR
PERFORMANCE SPECIFICATIONS
ELECTRIC DATA
GENERAL TECHNICAL DATA
DIMENSIONS
CONTACT
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

AERMEC NXW 0503 – 1654 Water Cooled Heat Pump Reversible Water Side

Product Usage Instructions

Features

Dual-circuit unit for maximum efficiency at full load and partial load.
Option for an integrated hydronic kit on both source and user side.
PCO Microprocessor controls with LCD display for intuitive navigation and parameter modifications.

FAQ

Q: How to adjust the temperature settings?
A : You can adjust the temperature settings using the PCO Microprocessor control and navigating through the LCD display to modify the operating parameters.
Q : Can I use this product for residential air conditioning?
A: Yes, this product is designed to meet air conditioning needs in residential complexes.
Q: Is installation complicated?
A: The product comes with built-in hydronic modules that facilitate installation, ensuring a smooth setup process.

Installation versatility is also for geothermal applications.

Options of 1 or 2 pumps on both source and user side.
Reversible on the hydraulic side in the heat pump

DESCRIPTION

Water-water offering chilled/hot water, designed to mit air conditioning needs in residential/commercial complexes or industrial applications. Indoor units with hermetic scroll compressors and plate heat exchang-ers.
The base, the structure, and the panels are made of galvanized steel treated with polyester paint RAL 9003.

VERSIONS

Standard
L Standard silenced

FEATURES

Operating field
Full-load operation with the production of chilled water 4-18 °C, and the possibility to produce also negative temperature water down to -10°C for the evaporator and hot water for the condenser up to 55 °C.(for more information, refer to the technical
documentation).

Dual-circuit unit

The units are dual-circuit, to ensure maximum efficiency both at full load and at partial load.

Option integrated hydronic kit, source, and user side

The built-in hydronic module includes the main water circuit components; it is available in various configurations with one or two pumps with high or low head both on the system side and the source side, to obtain a solution that allows you to save money and
to facilitate installation.

CONTROL PCO

Microprocessor adjustment, with display LCD, allows to navigate intuitively among the various screens, allowing to modify the operating parameters and the ad adjustment includes complete management of the alarms and their log.
You also can:
- Check two units in parallel Master-Slave
- The presence of a programmable timer allows functioning time periods and a possible second set-point to be set.
- The temperature control takes place with the integral proportional logic, based on the water output temperature.

ACCESSORIES

AER485P1 : RS-485 interface for supervision systems with MODBUS protocol.
AERBACP : Ethernet communication Interface for protocols Bacnet/IP, Modbus TCP/IP, SNMP
INTERNET : The device allows the control, management and remote monitoring of a Chiller with a PC, smartphone, or tablet using a Cloud connection. AERNET works as Master while every unit connected is configured as Slave (max. 6 unit); also, with a
simple click is possible to save a log file with all the connected unit data in the personal terminal for post-analysis.
MULTICHILLER_EVO : Control, switch-on, and switch-off system of the single chillers where multiple units are installed in parallel, always en-suring constant flow rate to the evaporators.
PGD1 : Allows you to control the unit at a distance.
AVX : Spring anti-vibration supports.
DRE: Electronic device for peak current reduction.
RIF : Power factor correction. Connected in parallel to the motor allowing about 10% reduction of input current.

ACCESSORIES COMPATIBILITY

Model| Ver| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
AER485P1| °,L| •| •| •| •| •| •| •| •| •| •| •| •| •
AERBACP| °,L| •| •| •| •| •| •| •| •| •| •| •| •| •
INTERNET| °,L| •| •| •| •| •| •| •| •| •| •| •| •| •
MULTICHILLER_EVO| °,L| •| •| •| •| •| •| •| •| •| •| •| •| •
PGD1| °,L| •| •| •| •| •| •| •| •| •| •| •| •| •

Antivibration

Version| Integrated hydronic

kit user side

| Integrated hydronic

kit, source side

| 0503| 0553| 0604| 0654| 0704| 0754| 0804
---|---|---|---|---|---|---|---|---|---
°| °| | °| AVX319| AVX319| AVX301| AVX301| AVX301| AVX303| AVX310
°| °| | J,K,U,W| AVX320| AVX320| AVX320| AVX320| AVX320| AVX312| AVX651
°| M,O| | °| AVX320| AVX320| AVX320| AVX320| AVX320| AVX312| AVX651
°| °| | V,Z| AVX320| AVX320| AVX309| AVX309| AVX309| AVX312| AVX651
°| M| | J,K,U,V,W,Z| AVX320| AVX320| AVX309| AVX309| AVX309| AVX312| AVX651
°| N| | °,J,K,U,W| AVX320| AVX320| AVX309| AVX309| AVX309| AVX312| AVX651
°| O| | J,K,U,V,W,Z| AVX320| AVX320| AVX309| AVX309| AVX309| AVX312| AVX651
°| P| | °,J,K,U,W| AVX320| AVX320| AVX309| AVX309| AVX309| AVX312| AVX651
°| N,P| | V,Z| AVX309| AVX309| AVX310| AVX310| AVX310| AVX312| AVX651
L| °| | °| AVX309| AVX309| AVX310| AVX303| AVX303| AVX310| AVX314
L| °| | J,K,U,W| AVX321| AVX321| AVX311| AVX311| AVX651| AVX651| AVX652
L| M,O| | °| AVX321| AVX321| AVX311| AVX311| AVX651| AVX651| AVX652
L| °| | V,Z| AVX311| AVX311| AVX311| AVX311| AVX651| AVX651| AVX652
L| M| | J,K,U,W| AVX311| AVX311| AVX311| AVX311| AVX651| AVX651| AVX652
L| N| | °| AVX311| AVX311| AVX311| AVX311| AVX651| AVX651| AVX652
L| O| | J,K,U,W| AVX311| AVX311| AVX311| AVX311| AVX651| AVX651| AVX652
L| P| | °| AVX311| AVX311| AVX311| AVX311| AVX651| AVX651| AVX652
L| M| | V,Z| AVX311| AVX311| AVX312| AVX312| AVX651| AVX651| AVX652
L| N| | J,K,U,W| AVX311| AVX311| AVX312| AVX312| AVX651| AVX651| AVX652
L| O| | V,Z| AVX311| AVX311| AVX312| AVX312| AVX651| AVX651| AVX652
L| P| | J,K,U,W| AVX311| AVX311| AVX312| AVX312| AVX651| AVX651| AVX652
L| N,P| | V,Z| AVX312| AVX312| AVX312| AVX310| AVX651| AVX651| AVX652
| | | | | | | | | |
Version| Integrated hydronic

kit user side

| Integrated hydronic

kit, the source side

| 0904| 1004| 1254| 1404| | 1504| 1654
°| °| | °| AVX314| AVX316| AVX316| AVX315| AVX330| AVX330
°| °| | J,K,U,W| AVX655| AVX653| AVX654| AVX654| AVX334| AVX337
°| M,N,O| | °| AVX655| AVX653| AVX654| AVX654| AVX334| AVX337
°| °| | V,Z| AVX655| AVX653| AVX654| AVX654| AVX337| –
°| M,O| | J,K,U,W| AVX665| AVX653| AVX654| AVX654| AVX337| AVX335
°| M,O| | V,Z| AVX655| AVX653| AVX654| AVX654| AVX340| –
°| N| | J,K,U,W| AVX665| AVX653| AVX654| AVX654| AVX340| AVX335
°| N| | V,Z| AVX665| AVX653| AVX654| AVX654| AVX335| –
°| P| | °| AVX655| AVX653| AVX654| AVX654| –| –
°| P| | J,K,U,V,W,Z| AVX665| AVX653| AVX654| AVX654| –| –
L| °| | °| AVX314| AVX315| AVX315| AVX317| AVX331| AVX331
L| °| | J,K,U,W| AVX653| AVX654| AVX659| AVX659| AVX335| AVX338
L| M,O| | °| AVX653| AVX654| AVX659| AVX659| AVX335| AVX338
L| °| | V,Z| AVX653| AVX654| AVX659| AVX659| AVX338| –
L| M| | J,K,U,W| AVX653| AVX654| AVX659| AVX659| AVX338| AVX339
L| N| | °| AVX653| AVX654| AVX659| AVX659| AVX338| AVX339
L| O| | J,K,U,W| AVX653| AVX654| AVX659| AVX659| AVX338| AVX339
L| M,N,O| | V,Z| AVX653| AVX654| AVX659| AVX659| AVX339| –
L| N| | J,K,U,W| AVX653| AVX654| AVX659| AVX659| AVX339| AVX341
L| P| | °,J,K,U,V,W,Z| AVX653| AVX654| AVX659| AVX659| –| –

not available

Power factor correction

Ver| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---
°,L| RIF98| RIF98| RIF95| RIF95| RIF95| RIF95| RIF95| RIF96| RIF97| RIF97| RIF97| RIF97| RIF97

A grey background indicates the accessory must be assembled in the factory

Device for peak current reduction

Ver| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---
°,L| DRE501 (1)| DRE551 (1)| DRE601 (1)| DRE651 (1)| DRE701 (1)| DRE751 (1)| DRE801 (1)| DRE901 (1)| DRE1001 (1)| DRE1251 (1)| DRE1401 (1)| DRE1500 (1)| DRE1650 (1)

Only for supplies of 400V 3N ~ 50Hz and 400V 3 ~ 50Hz. x 2 or x 3 (if present) indicates the quantity to be ordered. A grey background indicates the accessory must be assembled in the factory

CONFIGURATOR

Field	Description
1,2,3	NXW
4,5,6,7	Size

0503, 0553, 0604, 0654, 0704, 0754, 0804, 0904, 1004, 1254, 1404, 1504, 1654

Water produced from 4 °C ÷ 18 °C
Water produced from 4 °C ÷ -10 °C; for the availability with the heat recovery we advise you to contact us
Shipped withholding charge only.
The desuperheater must be isolated in heating mode. In cooling mode, a water temperature no lower than 35°C must always be guaranteed on the heat exchanger inlet.
Options not available for condensing units, and for models with pump/s
Only for 0804 ÷ 1004 sizes
Not available for size 1504 ÷ 1654
Not available for size 1654

PERFORMANCE SPECIFICATIONS

Size| | | 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Cooling performance 12 °C / 7 °C (1)| | | | | | | | | | | | | | |
Cooling capacity| °,L| kW| 111,8| 120,7| 148,7| 166,7| 188,7| 222,7| 257,6| 291,6| 325,7| 354,6| 384,6| 453,9| 511,4
Input power| °,L| kW| 23,0| 24,8| 30,6| 34,4| 38,9| 45,6| 53,0| 60,3| 66,5| 72,6| 78,7| 92,3| 104,0
Cooling total input current| °,L| A| 48,0| 51,0| 58,0| 63,0| 86,0| 94,0| 102,0| 120,0| 138,0| 140,0| 143,0| 160,0| 178,0
EER| °,L| W/W| 4,87| 4,86| 4,86| 4,85| 4,85| 4,88| 4,86| 4,84| 4,90| 4,88| 4,89| 4,92| 4,92
Water flow rate source side| °,L| l/h| 23047| 24886| 30656| 34332| 38866| 45790| 52970| 60075| 67065| 73041| 79190| 93374| 105103
Pressure drop source side| °,L| kPa| 25| 29| 29| 37| 37| 45| 60| 38| 29| 34| 36| 36| 47
Water flow rate system side| °,L| l/h| 19243| 20789| 25600| 28692| 32472| 38314| 44327| 50169| 56011| 60993| 66147| 78063| 87938
Pressure drop system side| °,L| kPa| 30| 35| 32| 40| 43| 47| 49| 55| 35| 36| 36| 36| 40
Heating performance 40 °C / 45 °C (2)
Heating capacity| °,L| kW| 127,6| 137,8| 170,0| 190,3| 215,4| 253,7| 293,5| 332,9| 371,5| 404,7| 438,7| 517,1| 582,0
Input power| °,L| kW| 27,6| 29,9| 36,3| 40,9| 46,4| 54,5| 63,3| 72,3| 79,0| 86,2| 93,3| 109,5| 123,4
Heating total input current| °,L| A| 57,0| 60,0| 68,0| 73,0| 100,0| 109,0| 119,0| 140,0| 161,0| 163,0| 166,0| 186,0| 207,0
COP| °,L| W/W| 4,62| 4,61| 4,69| 4,66| 4,64| 4,66| 4,64| 4,60| 4,70| 4,69| 4,70| 4,72| 4,71
Water flow rate source side| °,L| l/h| 29340| 31697| 39235| 43975| 49768| 58721| 67938| 76891| 85844| 93480| 101380| 119642| 134776
Pressure drop source side| °,L| kPa| 70| 81| 75| 94| 101| 110| 115| 129| 82| 85| 85| 85| 94
Water flow rate system side| °,L| l/h| 22142| 23905| 29490| 33021| 37384| 44030| 50933| 57790| 64513| 70265| 76175| 89802| 101065
Pressure drop system side| °,L| kPa| 23| 27| 27| 34| 34| 42| 55| 35| 27| 31| 33| 33| 43
(1) Date 14511:2022; Water user side 12 °C / 7 °C; Water source side 30 °C / 35 °C

(2) Date 14511:2022; Water user side 40 °C / 45 °C; Water source side 10 °C / 7 °C

ENERGY INDICES (REG. 2016/2281 EU)

Size| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---
SEER – 12/7 (EN14825: 2018) (1)
SEER| °,L| W/W| 5,50| 5,85| 5,79| 5,77| 5,84| 5,81| 5,52| 6,30| 6,42| 6,37| 6,38| 6,49| 6,48
Seasonal efficiency| °,L| %| 217,0%| 231,0%| 228,6%| 227,8%| 230,6%| 229,4%| 217.8%| 248,8%| 253,8%| 251,6%| 252,0%| 256,4%| 256,2%
SEPR – (EN 14825: 2018) High temperature (2)
SEPR| °| W/W| –| –| –| –| –| –| –| 7,90| 7,90| 7,80| 7,80| 8,00| 8,00
L| W/W| –| –| –| –| –| –| –| 7,93| 7,90| 7,78| 7,80| 8,00| 8,02
UE 813/2013 performance in average ambient conditions (average) – 55 °C – Pdesignh ≤ 400 kW (3)
Pdesignh| °,L| kW| 164| 177| 218| 244| 277| 326| 377| –| –| –| –| –| –
SCOP| °,L| W/W| 5,10| 5,05| 5,18| 5,10| 5,10| 5,10| 5,08| –| –| –| –| –| –
ηsh| °,L| %| 196.0%| 194.0%| 199.0%| 196.0%| 196.0%| 196.0%| 195.0%| –| –| –| –| –| –
(1) Calculation performed with FIXED water flow rate and VARIABLE outlet temperature.

(2) Calculation performed with FIXED water flow rate.

(3) Efficiencies for average temperature applications (55 °C)

ELECTRIC DATA

Size| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---
Electric data
Maximum current (FLA)| °,L| A| 75,0| 80,0| 96,0| 107,0| 122,0| 146,0| 169,0| 193,0| 217,0| 231,0| 248,0| 267,0| 296,0
Peak current (LRA)| °,L| A| 240,0| 245,0| 227,0| 238,0| 289,0| 319,0| 341,0| 398,0| 422,0| 490,0| 504,0| 601,0| 630,0

GENERAL TECHNICAL DATA

Size| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---
Compressor
Type| °,L| type| Scroll
Compressor regulation| °,L| Type| On-Off
Number| °,L| no.| 3| 3| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4| 4
Circuits| °,L| no.| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2| 2
Refrigerant| °,L| type| R410A
Refrigerant charge (1)| °,L| kg| 13,2| 12,5| 15,6| 15,6| 18,0| 22,0| 26,0| 33,0| 38,0| 44,0| 44,0| 46,0| 53,0
Source side heat exchanger
Type| °,L| type| Brazed plate
Number| °,L| no.| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1
Connections (in/out)| °,L| Type| Grooved joints
Size (in)| °,L| Ø| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 3”| 3”| 3”| 3”| 3”| 3”
Size (out)| °,L| Ø| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 3”| 3”| 3”| 3”| 3”| 3”
System side heat exchanger
Type| °,L| type| Brazed plate
Number| °,L| no.| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1
Connections (in/out)| °,L| Type| Grooved joints
Size (in)| °,L| Ø| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 3”| 3”| 3”| 3”| 3”
Size (out)| °,L| Ø| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 2” 1/2| 3”| 3”| 3”| 3”| 3”
Sound data calculated in cooling mode (2)
Sound power level| °| dB(A)| 78,0| 79,0| 79,0| 80,0| 82,0| 86,0| 88,0| 88,0| 88,0| 90,0| 90,0| 93,0| 95,0
L| dB(A)| 72,0| 73,0| 73,0| 74,0| 76,0| 80,0| 82,0| 82,0| 82,0| 84,0| 84,0| 86,0| 87,0
Sound pressure level (10 m)| °| dB(A)| 46,4| 47,4| 47,4| 48,4| 50,4| 54,3| 56,3| 56,3| 56,3| 58,3| 58,3| 61,3| 63,3
L| dB(A)| 40,3| 41,3| 41,3| 42,3| 44,3| 48,3| 50,3| 50,3| 50,3| 52,3| 52,3| 54,3| 55,3
(1) The load indicated in the table is an estimated and preliminary value. The final value of the refrigerant load is indicated on the unit’s technical label. For further information contact the office.

(2) Sound power calculated on the basis of measurements made in accordance with UNI EN ISO 9614-2, as required for Eurovent certification. Sound pressure (cold functioning) measured in a free field, 10m away from the unit’s external surface (in compliance with UNI EN ISO 3744).

DIMENSIONS

Size| 0503| 0553| 0604| 0654| 0704| 0754| 0804| 0904| 1004| 1254| 1404| 1504| 1654
---|---|---|---|---|---|---|---|---|---|---|---|---|---
Dimensions and weights
A| °| mm| 1835| 1835| 1835| 1835| 1835| 1775| 1775| 1820| 1820| 1820| 1820| 1820| 1820
L| mm| 1885| 1885| 1885| 1885| 1885| 1885| 1885| 1885| 1885| 1885| 1885| 1885| 1885
B| °,L| mm| 800| 800| 800| 800| 800| 800| 800| 800| 800| 800| 800| 800| 800
C| °| mm| 1795| 1795| 1795| 1795| 1795| 2420| 2420| 2420| 2420| 2420| 2420| 2420| 2420
L| mm| 2090| 2090| 2090| 2090| 2090| 2420| 2420| 2420| 2420| 2420| 2420| 2420| 2420
Empty weight| °| kg| 578| 582| 682| 690| 727| 882| 989| 1180| 1417| 1461| 1539| 1613| 1721
L| kg| 750| 755| 854| 863| 900| 1054| 1187| 1378| 1615| 1659| 1737| 1811| 1919

The weight of the unit does not include the hydronic kit and accessories.

Aermec reserves the right to make any modifications deemed necessary. All data is subject to change without notice. Aermec does not assume responsibility or liability for errors or omissions.