AERMEC NRP 0280-0750 User manual

INRP1UY. 1305. 5806711_00
MULTIPURPOSE UNITS FOR 2/4 - PIPE SYSTEMS - InstallaƟon manual
EN
NRP 0280-0750
REVERSIBLE HEAT PUMPS
• DESIGNED FOR 2 AND 4ͳPIPE SYSTEMS FOR
EXTERNAL INSTALLATION
• OUTDOOR UNIT
• HIGH EFFICIENCIES

AERMEC S.p.A. reserves the right at any moment to make any modifications considered necessary to improve our products and is not obliged to add these modifications
to machines that have already been fabricated, delivered or are under construction.
Dear Customer,
Thank you for choosing an AERMEC product. This product is the result of many years of experience and
in-depth engineering research, and it is built using top quality materials and advanced technologies.
In addition, the CE mark guarantees that our appliances fully comply with the requirements of the
European Machinery Directive in terms of safety. We constantly monitor the quality level of our
products, and as a result they are synonymous with Safety, Quality, and Reliability.
Product data may be subject to modifications deemed necessary for improving the product without the
obligation to give prior notice.
Thank you again.
AERMEC S.p.A

INRP1UY. 1305. 5806711_00
1. Receipt of the product and installaon ............................................... 5
1.1. Receipt and handling ........................................................................ 5
1.2. Handling the machine:...................................................................... 5
1.3. Selecon and place of installaon ................................................... 5
2. Dimensional tables............................................................................ 6
2.1. Dimensions NRP 0280 - 0300 - 0330 - 0350 ..................................... 6
2.2. Liing points ..................................................................................... 6
2.3. Posion an-vibraon mounts.......................................................... 6
2.4. Minimum clearance space ................................................................ 6
2.5. Dimensions NRP 0500 - 0550 ........................................................... 7
2.6. Liing points ..................................................................................... 7
2.7. Posion an-vibraon mounts.......................................................... 7
2.8. Minimum clearance space ................................................................ 7
2.9. Dimensions NRP 0600 - 0650 - 0700 ................................................ 8
2.10. Liing points ..................................................................................... 8
2.11. Posion an-vibraon mounts.......................................................... 8
2.12. Minimum clearance space ................................................................ 8
2.13. Dimensions NRP 0750 ...................................................................... 9
2.14. Liing points ..................................................................................... 9
2.15. Posion an-vibraon mounts.......................................................... 9
2.16. Minimum clearance space ................................................................ 9
3. Weights | centre of gravity and point load percentages................. 10
4. Posion of hydraulic connecons ................................................... 12
4.1. NRP 0280-0300-0330-0350-0500-0550-0600-0650-0700 .............. 12
4.2. NRP 0750 ........................................................................................ 13
4.3. Loading system................................................................................ 14
4.4. Discharging system ......................................................................... 14
5. Control and commissioning ............................................................ 15
5.1. Electric data table ........................................................................... 15
5.2. Electrical data.................................................................................. 15
6. Electric power connecon to the electrical mains.......................... 16
7. Control and commissioning ............................................................ 16
7.1. Preparaon for commissioning....................................................... 16
7.2. Start - up ........................................................................................ 16
7.3. Machine commissioning ................................................................. 16
8. Funconing features ....................................................................... 17
8.1. Set point in cooling mode ............................................................... 17
8.2. Set point in heang mode............................................................... 17
8.3. Compressor start-up delay.............................................................. 17
8.4. Circulaon pumps (not supplied).................................................... 17
8.5. An-freeze alarm ............................................................................ 17
8.6. Water flow rate alarm..................................................................... 17
INDEX
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INRP1UY. 1305. 5806711_00
1.1. RECEIPT AND HANDLING
The machine is sent from the factory wrapped with
estincoil placed on a pallet.
Before handling the unit, verify the lifting capacity of
the machines used.
Handling must be performed by qualified, suitably
equipped staff.
1.2. HANDLING THE MACHINE:
Whenever the machine must be lifted using belts,
place protections between the belts and the
framework to prevent damage to the structure.
Insert pipes (NOT SUPPLIED) in the pre-arranged
holes (NRP 0200 - 0700) long enough to allow fixing
of lifting belts.
NRP 0750 units are supplied with eyebolts; they
must be lifted using suitable belts hooked to all the
installed eyebolts.
1.2.1. LIFTING STANDARDS
1. All panels must be tightly fixed before moving
the unit;
2. before lifting, check the specific weight on the
technical plate;
3. use all, and only, the lifting points indicated;
4. use ropes in compliance with Standards and of
equal length;
5. use a spacer beam in compliance with
Standards (not included);
6. handle the unit with care and without sudden
movements.
It is prohibited to stop under the unit during lifting
operations.
- The machine must always be kept in a vertical
position.
- The instructions found on the machine are an
integral part of the same. They must be read and
kept carefully.
- ATTENTION: The units CANNOT be stacked.
1.3. SELECTION AND PLACE OF INSTALLATION
The NRP air/water OUTDOOR heat pump with gas
side conversion (R410A) is sent from the factory
already inspected and only requires electric and
hydraulic connections in the place of installation.
Before beginning the installation process, decide
with the client where the unit is to be installed,
whilst paying attention to the following:
1. The support surface must be capable of
supporting the unit weight.
2. The safety distances between the units
and other appliances or structures must be
scrupulously respected.
3. The unit must be installed by a qualified
technician in compliance with national laws in
the country of destination.
4. It is mandatory to foresee to the necessary
technical space in order to allow ROUTINE AND
EXTRAORDINARY MAINTENANCE interventions.
5. Remember that during operation, the
chiller can cause vibrations; therefore "VT"
anti-vibration mounts (ACCESSORIES) are
recommended, fixed on the base according to
the assembly layout.
6. Fix the unit checking that it is level.
1. RECEIPT OF THE PRODUCT AND INSTALLATION
ATTENTION
Lifting poles not supplied
EXAMPLE 1
"OF THE LIFTING"
Size NRP 0280-0700.
Insert pipes (NOT SUPPLIED) in holes on the base with
length such to allow positioning of the belts used for
lifting.
To prevent the unit structure being damaged by the belts
place protections between the latter and the machine.
It is prohibited to stop under the unit.
NOTE:
The appliance warranty does not cover the costs for lad-
ders, scaffolding, or other elevation systems that may
become necessary for carrying out servicing under
warranty.
EXAMPLE 2
"OF THE LIFTING"
NRP 0750 (always use all the provided eyebolts)
Before moving the unit, check the lifting
capacity of the machines used.
Once the packaging has been removed, the unit must
be handled by qualified personnel, using the appro-
priate equipment. To handle the machine:
"IN THE EVENT OF LIFTING", hook the lifting cables
to the special eyebolts In order to avoid damaging
the unit with the cables, insert protection elements
between them and the machine. Is it absolutely
forbidden to stand beneath
the unit.
5

INRP1UY. 1305. 5806711_00
1100mm
43,3in
3200mm
126,0in
1606mm
63,2in
1200mm
47,2in
3400mm
133,9in
2100mm
82,7in
2. DIMENSIONAL TABLES
2.1. DIMENSIONS NRP 0280 ͳ0300 ͳ0330 ͳ0350
2.2. LIFTING POINTS
2.3. POSITION ANTIͳVIBRATION MOUNTS 2.4. MINIMUM CLEARANCE SPACE
Ø40
644mm
25,4in
600mm
23,6in
Ø40
200mm
7,9in
2800mm
110,2in
200mm
7,9in
200mm
7,9in
2800mm
110,2in
200mm
7,9in
Ø16
20mm
0,8in
800mm
31,5in
800mm
31,5in 1100mm
43,3in
800mm
31,5in
6

INRP1UY. 1305. 5806711_00
2.5. DIMENSIONS NRP 0500 ͳ0550
2.6. LIFTING POINTS
2.8. MINIMUM CLEARANCE SPACE2.7. POSITION ANTIͳVIBRATION MOUNTS
1200mm
47,2in
3400mm
133,9in
2100mm
82,7in
3342mm
131,6in
1100mm
43,3in
1875mm
73,8in
410mm
16,1in
582mm
22,9in
Ø40 Ø40
200mm
7,9in
200mm
7,9in
2612mm
102,8in
2612mm
102,8in
200mm
7,9in
200mm
7,9in
Ø16
20mm
0,8in
800mm
31,5in
800mm
31,5in
1100mm
43,3in
800mm
31,5in
7

INRP1UY. 1305. 5806711_00
1100mm
43,3in
1875mm
73,8in
4342mm
170,9in
1200mm
47,2in
2100mm
82,7in
4450mm
175,2in
2.9. DIMENSIONS NRP 0600 ͳ0650 ͳ0700
2.10. LIFTING POINTS
2.11. POSITION ANTIͳVIBRATION MOUNTS 2.12. MINIMUM CLEARANCE SPACE
394mm
15,5in
662mm
26,1in
Ø40 Ø40
200mm
7,9in
200mm
7,9in
1440mm
56,7in
2158mm
85,0in
Ø16
20mm
0,8in
200mm
7,9in
200mm
7,9in
1440mm
56,7in
2158mm
85,0in
800mm
31,5in
800mm
31,5in
1100mm
43,3in
800mm
31,5in
8

INRP1UY. 1305. 5806711_00
1500mm
59,1in
1975mm
77,8in
5355mm
210,8in
2200mm
86,6in
2200mm
86,6in
5550mm
218,5in
2.13. DIMENSIONS NRP 0750
2.14. LIFTING POINTS
2.15. POSITION ANTIͳVIBRATION MOUNTS 2.16. MINIMUM CLEARANCE SPACE
Ø70 Ø70 Ø70 Ø70
2000mm
78,7in
2000mm
78,7in
1150mm
45,3in
102,5mm
4,0in
102,5mm
4,0in
102,5mm
4,0in
102,5mm
4,0in
2000mm
78,7in
2000mm
78,7in
1150mm
45,3in
102,5mm
4,0in
102,5mm
4,0in
2000mm
78,7in
2000mm
78,7in
1150mm
45,3in
Ø20
50mm
2,0in
800mm
31,5in
1100mm
43,3in
800mm
31,5in
800mm
31,5in
9

INRP1UY. 1305. 5806711_00
3. WEIGHTS | CENTRE OF GRAVITY AND POINT LOAD PERCENTAGES
EMPTY WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0280 00 884 554 1214 21,8 47,8 19% 21% 28% 31% - - - -
NRP0300 00 909 555 1193 21,9 47,0 20% 22% 28% 30% - - - -
NRP0330 00 935 556 1170 21,9 46,1 20% 23% 27% 30% - - - -
NRP0350 00 1018 556 1190 21,9 46,9 20% 22% 28% 30% - - - -
EMPTY WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0500 00 1118 555 1446 21,8 56,9 28% 28% 22% 22% - - - -
NRP0550 00 1166 564 1416 22,2 55,7 28% 29% 21% 22% - - - -
RUNNING WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0280 00 916 554 1216 21,8 47,9 19% 21% 28% 31% - - - -
NRP0300 00 941 555 1195 21,8 47,0 20% 22% 28% 31% - - - -
NRP0330 00 969 556 1172 21,9 46,1 20% 22% 27% 30% - - - -
NRP0350 00 1058 556 1189 21,9 46,8 20% 22% 28% 30% - - - -
RUNNING WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0500 00 1169 555 1466 21,8 57,7 27% 28% 22% 23% - - - -
NRP0550 00 1221 564 1436 22,2 56,5 27% 29% 21% 22% - - - -
Yg
A
B
C
D
Xg
Yg
A
B
C
D
Xg
10

INRP1UY. 1305. 5806711_00
EMPTY WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0600 00 1456 552 1896 21,7 74,6 9% 9% 31% 32% 10% 10% - -
NRP0650 00 1480 552 1888 21,7 74,3 9% 9% 32% 32% 10% 10% - -
NRP0700 00 1545 552 1864 21,7 73,4 9% 9% 31% 32% 9% 9% - -
EMPTY WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0750 00 2237 754 2153 29,7 84,8 9% 9% 19% 20% 19% 19% 2% 2%
RUNNING WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0600 00 1510 552 1908 21,7 75,1 8% 8% 32% 32% 10% 10% - -
NRP0650 00 1539 552 1899 21,7 74,8 8% 8% 32% 32% 10% 10% - -
NRP0700 00 1612 552 1875 21,7 73,8 9% 9% 32% 32% 9% 9% - -
RUNNING WEIGHT
NRP HYDRONIC
KIT
UNIT
WEIGHT
(Kg)
BARYCENTRE
Έmm)
BARYCENTRE
Έin)
WEIGHT DISTRIBUTION
ON SUPPORTS Έ%Ή
Gx Gy Gx Gy A B C D E F G H
NRP0750 00 2312 754 2141 29,7 84,3 9% 9% 20% 20% 18% 18% 2% 2%
Yg
A
B
E
F
C
D
Xg
Yg
A
B
G
H
E
F
C
D
Xg
11

INRP1UY. 1305. 5806711_00
4. POSITION OF HYDRAULIC CONNECTIONS
4.1. NRP 0280ͳ0300ͳ0330ͳ0350ͳ0500ͳ0550ͳ0600ͳ0650ͳ0700
2 AND 4ͳPIPE SYSTEM KEY 0280 0300 0330 0350 0500 0550 0600 0650 0700
AIN - version with pump (P1-P2-P3-P4) ø 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½
BIN - standard version (°) ø 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½
COUT - standard version and storage tank version (°/01-02-03-04) ø 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½
DIN - from DHW system ø 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½
EOUT - from DHW system ø 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½
FIN - version with storage tank ø 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½ 2”½
POSSIBLE CONFIGURATIONS BETWEEN HYDRONIC KITS
recovery hydronic unit
system hydronic unit
° R1R2R3R4
°ok ok ok ok ok
01 ok na na na na
02 ok na na na na
03 ok na na na na
04 ok na na na na
P1 ok ok ok ok ok
P2 ok ok ok ok ok
P3 ok ok ok ok ok
P4 ok ok ok ok ok
110mm
4,3in
157mm
6,2in
470mm
18,5in
240mm
9,4in
340mm
13,4in
550mm
21,7in
248mm
9,8in
150mm
5,9in
428mm
16,9in
A
B
C
D
F
E
12

INRP1UY. 1305. 5806711_00
4.2. NRP 0750
2 AND 4ͳPIPE SYSTEM KEY 0750
AIN - version with pump (P1-P2-P3-P4) ø3”
BIN - standard version (°) ø3”
COUT - standard version and storage tank version (°/01-02-03-04) ø3”
DIN - from DHW system ø3”
EOUT - from DHW system ø3”
FIN - version with storage tank ø3”
POSSIBLE CONFIGURATIONS BETWEEN HYDRONIC KITS
recovery hydronic unit
system hydronic unit
° R1R2R3R4
°ok ok ok ok ok
01 ok na na na na
02 ok na na na na
03 ok na na na na
04 ok na na na na
P1 ok ok ok ok ok
P2 ok ok ok ok ok
P3 ok ok ok ok ok
P4 ok ok ok ok ok
250mm
9,8in
497mm
19,6in
436mm
17,2in
304mm
12,0in
300mm
11,8in
A
B
C
D
13

INRP1UY. 1305. 5806711_00
4.3. LOADING SYSTEM
4.4. DISCHARGING SYSTEM
Before beginning loading, place the switch at OFF
1. Check that system drain cock is closed.
2. Open all vent valves of the system and the
relative terminals.
3. Open the system cut-off devices.
4. Start filling by slowly opening the system
water loading cock outside the appliance.
5. When water starts to escape from the
terminal vent valves, close them and continue
loading until the intended pressure value for
the system is reached.
1. Before beginning emptying, place the master
switch at "OFF".
2. Check that the loading/water system
reintegration cock is closed.
3. Open the drain cock outside the appliance and
all system vent valves and relative terminals.
ATTENTION
If antifreeze is used by the unit,
it must not be dumped as it is
harmful to the environment.
It should be collected and if
possible reused.
ATTENTION
Check the hydraulic sealing of the
joints.
ATTENTION
It is recommended to repeat this
operation after the appliance has
functioned for a few hours and
to periodically check the system
pressure. The machine must be off
(pump Off) when reintegrated.
14

INRP1UY. 1305. 5806711_00
5. CONTROL AND COMMISSIONING
The NRP mulpurpose units are completely wired
at the factory and only require connecon to the
electrical mains, downstream from a unit switch,
according to that envisioned by the Standards in
force on this subject in the country of installation.
It s also advised to check that:
1. The electrical mains features are suitable
for the absorption values indicated in
the electrical data table, also taking into
consideration any other machines operating
at the same time.
2. The unit is only powered when installation has
been completed (hydraulic and electric).
3. Respect the connection indications of the
phase, and earth wires.
4. The power supply line must have a relevant
protection mounted upstream against short
circuits and dispersions to earth, which
isolates the system with respect to other
utilities.
5. The voltage must be within a tolerance of
±10% of the nominal power supply voltage
of the machine (for unbalanced three-phase
unit max 3% between the phases). Whenever
these parameters are not respected, contact
the electric energy public body.
6. For electric connections, use the cables with
double isolation according to the Standards in
force on this subject in the different countries.
MANDATORY
1. The use of an omnipolar magnet circuit
breaker switch is mandatory, in compliance
with the IEC-EN Standards (contact opening
at least 3 mm), with suitable cut-off power
and differential protection on the basis of the
electric data table shown below, installed as
near as possible to the appliance.
2. It is mandatory to make an effective earth
connection. The manufacturer cannot be held
responsible for any damage caused by the lack
of or ineffective appliance earth connection.
3. For units with three-phase power supply,
check the correct connection of the phases.
5.1. ELECTRIC DATA TABLE
For longer lengths or different cable laying, it is
up to the PLANNER to calculate the appropriate
line switch, the power supply line as well as the
connection to the earth wire and connection cables
depending on:
• the length;
• the type of cable;
• the absorption of the unit and the physical
location, and the ambient temperature.
All the electrical operaons must be carried out bySTAFF IN POSSESSION OF THE NECESSARY
QUALIFICATIONS BY LAW, suitably trained and informed on the risks related to these
operaons.
The characteriscs of the electrical lines and of the related components must be determined
by STAFF QUALIFIED TO DESIGN ELECTRICAL SYSTEMS, in compliance with the internaonal
and naonal regulaons of the place of installaon of the unit and in compliance with the
regulaons in force at the moment of installaon.
For the installaon requirements refer only to the electrical diagram supplied with the
appliance. The electrical diagram along with the manuals must be kept in good condion and
ALWAYS AVAILABLE FOR ANY FUTURE SERVICING ON THE UNIT.
It is mandatory to verify that the machine is waterght before making the electrical connecons
and it must only be powered up aer the hydraulic and electrical works have been completed.
NRP Power supply U.M. NRP 280 E NRP 300 E NRP 330 E NRP 350 E NRP 500 A NRP 550 A NRP 600 A NRP 650 A NRP 700 A NRP 750 A
LRA 230V-3-60Hz A 239 287 294 375 376 389 373 454 494 546
MCA 230V-3-60Hz A 87 95 101 146 148 161 180 225 265 284
MOP 230V-3-60Hz A 117 132 138 203 205 218 218 283 323 346
Recommended fuse 230V-3-60Hz A 110 125 125 200 200 200 200 250 300 300
LRA 460V-3-60Hz A 132 157 163 193 189 200 199 229 239 276
MCA 460V-3-60Hz A 50 57 63 74 70 81 99 110 120 134
MOP 460V-3-60Hz A 64 77 83 99 95 106 119 135 145 163
Recommended fuse 460V-3-60Hz A 60 75 80 90 90 100 110 125 125 150
LRA 575V-3-60Hz A 103 105 108 145 138 146 134 171 186 217
MCA 575V-3-60Hz A 38 43 46 64 57 64 72 89 105 118
MOP 575V-3-60Hz A 49 57 60 86 79 86 86 112 127 144
Recommended fuse 575V-3-60Hz A 45 50 60 80 75 80 80 110 125 125
Data declarated with No Pump version.
ATTENTION
Check the tightening of all power
wire terminals on commissioning
and after 30 days from start-
up. Subsequently they must be
checked every six months.
Loose terminals can cause
overheating of the cables and
components.
ATTENTION
It is prohibited to use the water
pipes to earth the appliance.
5.2. ELECTRICAL DATA
15

INRP1UY. 1305. 5806711_00
1. Before connecng the unit to the power supply
mains, ensure that the disconnecon switch is
open.
2. Open the front panel.
3. Use the plates to pass the main electric power
supply cable and the cables of the other
external connecons under the responsibility of
the installer.
4. It is forbidden to access with electric cables
in posions not specifically envisioned in this
manual.
5. Avoid direct contact with non-insulated copper
piping and with the compressor.
6. Idenfy the terminals for the electric
connecon and always refer to the wiring
diagram supplied with the unit.
7. For the funconal connecon of the unit, take
the power supply cable to the electric control
board inside the unit and connect it to terminals
L1-L2-L3 and PE respecng the polaries.
8. L1-L2-L3 as phases, and PE as earth; see figure.
9. Re-posion the inspecon panels.
10. Ensure that all protecons removed for the
electric connecon have been restored before
electrically powering the unit.
11. Posion the system master switch (external to
the appliance) at “ON”.
Holes for electric cables
Fig. 1
ATTENTION:
Before carrying out the controls
indicated below, make sure that the
unit is disconnected from the power
mains. Make sure that the master
switch is locked in the OFF position
and an appropriate sign is affixed.
Before starting the operations, check
that there is no voltage present using a
voltmeter or a phase indicator.
6. ELECTRIC POWER CONNECTION TO THE ELECTRICAL MAINS
7. CONTROL AND COMMISSIONING
7.1. PREPARATION FOR COMMISSIONING
Please note that, on request by the Aermec customer
or the legimate owner of the machine, the units
in this series can be started up by the AERMEC
Aer-Sales Service in your area (valid only on Italian
territory). The start of operaon must be scheduled in
advance based on the me frame for the compleon
of works for the system. Prior to the intervenon, all
other works (electrical and hydraulic hook-ups, priming
and bleeding of air from the system) must have been
completed.
7.2. START ͳUP
7.2.1. PRELIMINARY OPERATIONS TO BE
PERFORMED WITH NO VOLTAGE PRESENT
Control:
1. All safety condions have been respected.
2. The unit is correctly fixed to the support
surface.
3. The minimum technical spaces have been
respected.
4. That the main power supply cables have
appropriate cross-secon, which can support
the total absorpon of the unit. (see electric
data secons) and that the unit has been duly
connected to the ground.
5. That all the electrical connecons have been
made correctly and all the terminals adequately
ghtened.
7.2.2. THE FOLLOWING OPERATIONS ARE TO BE
CARRIED OUT WHEN THE UNIT IS LIVE
1. Supply power to the unit by turning the master
switch to the ON position; see (fig1.) The display
will come on a few seconds after voltage has
been supplied; check that the operating status
is on OFF.(OFF BY KEY B on lower side of the
display).
2. Use a tester to verify that the value of the
power supply voltage to the RST phases is equal
to 400V ±10%; also verify that the unbalance
between phases is no greater than 3%.
3. Check that the connections made by the installer
are in compliance with the documentation.
4. Verify that the resistor of the compressor
casing is working by measuring the increase in
temperature of the oil pan. The resistance/s
must function for at least 12 hours before
start-up of the compressor and in any event,
the temperature of the oil pan must be 10-15°C
higher than room temperature.
HYDRAULIC CIRCUIT
1. Check that all hydraulic connections are made
correctly, that the plate indications are complied
with and that a mechanical filter has been
installed at the evaporator inlet. (Mandatory
component for warranty to be valid).
2. Make sure that the circulation pump/s is
operating and that the water flow rate is
sufficient to close the contact of the flow switch.
3. Check the water flow rate, measuring the
pressure difference between inlet and outlet of
the evaporator and calculate the flow rate using
the evaporator pressure drop diagram present in
this documentation.
4. Check correct functioning of the flow meters,
if installed; on closing the cut-off valve at the
outlet of the heat exchanger, the unit must
display the block. Finally, open the valve and
rearm the block.
7.3. MACHINE COMMISSIONING
After having performed all controls stated above, it
is possible to start the unit by pressing the ON key.
The display shows the temperature of the water and
machine functioning mode. Check the operating
parameters (set-point) and reset any alarms present.
After a few minutes, the unit will begin operating.
16

INRP1UY. 1305. 5806711_00
8. FUNCTIONING FEATURES
8.1. SET POINT IN COOLING MODE
(Factory set) = 7°C, ∆t = 5°C.
8.2. SET POINT IN HEATING MODE
(Factory set) = 45°C, ∆t = 5°C.
If the unit power supply is restored aer a temporary
interrupon, the set mode will be kept in the memory.
8.3. COMPRESSOR STARTͳUP DELAY
Two funcons have been prepared to prevent
compressor start-ups that are too close.
- Minimum time from last switch-off 60 seconds in
cooling mode.
- Minimum time from last switch-on 300 seconds in
heating mode.
8.4. CIRCULATION PUMPS
ΈNOT SUPPLIEDΉ
The circuit board envisions outputs for the
management of the circulaon pumps.
The pump side ulies start immediately aer the first
30 seconds of funconing. When the water flow rate
has gone into normal working condions, the flow
meter control funcons are acvated (if envisioned).
Below find the compressor start-up procedure, by
switching the source side pump on with flow meter
check if enabled aer 20 seconds.
Whenever alarms do not occur, the compressor starts.
8.5. ANTIͳFREEZE ALARM
The an-freeze alarm ПП is acve if the machine is off
or in stand-by mode. In order to prevent the heat
exchanger from breaking due to the water it contains
freezing, envision compressor block (if the machine
is on below 3.5°C) and ignion of the resistance (if
standby below 5°C). If the temperature detected by the
probe posioned in output of the heat exchanger and
in inlet to the chiller is less than +3.8°C.
The intervenon of this alarm ПР determines
compressor block and not pump block, which remains
acve along with the switch-on of the resistance if
installed.
To restore normal funcons the temperature of the
outlet water must rise above +4°C. Rearm is manual.
8.6. WATER FLOW RATE ALARM
The unit manages a water flow rate alarm controlled
by a pressure switch or flow switch installed as
per standard on the machine. This type of safety
device intervenes aer the first 30 seconds of pump
funconing, if the water flow rate is not sufficient.
The intervenon of this alarm determines compressor
and pump block.
ATTENTION
11 This anti-freeze set
temperature can only be
varied by an authorised after-
sales centre and only after
having checked that there
is anti-freeze solution in the
water system.
12 Whenever this alarm
intervenes, call the
nearest after-sales service
immediately.
17

The technical data in the following documentation are not binding. Aermec
reserves the right to make all the modifications considered necessary for
improving the product at any time.
37040 Bevilacqua (VR) - Italy
Via Roma, 996 - Tel. [phone]
Telefax ([phone] - ([phone]
www.aermec.com
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