IMP PUMPS NMT 40 User manual

7430017 v2
SLO
GB
NAVODILA ZA VGRADNJO IN UPORABO
INSTALLATION AND OPERATING MANUAL
MONTAGE- UND BETRIEBSANLEITUNG
ISTRUZIONI PER L’INSTALLAZIONE E L’USO
NMT(D) 
MONTAJ VE KULLANIM KILAVUZU
D
I
PL
NMT(D) 40, 50, 65, 80, 100
TR

Compliance of the
product with EU
standards
EU directive Harmonized standard
Machinery 2006/42/EC EN 809
Low Voltage 2006/95/EC EN 60335-1
EN 60335-2-51
Electromagnetic compatibility
(EMC) 2004/108/EC
EN 55014-1; EN 55014-2
EN 61000-3-2; EN 61000-3-3
Ecodesign Directive (2009/125/EC)
Circulators:
Commission Regulation No.
641/2009.
EN 16297-1:2012
and
EN 16297-2:2012
Pump type EEI
NMT 40 EEI≤0,27 –Part 2
NMT 50 EEI≤0,26 –Part 2
NMT 65 EEI≤0,25 –Part 2
NMT 80 EEI≤0,23 –Part 2
NMT 100 EEI≤0,23 –Part 2
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SLO ................................................................................3
GB ................................................................................15
IMP PUMPS d.o.o., ZAGORICA 18, 1292 Ig, SLOVENIA
tel.: [phone], fax: [phone]
e-mail: [e-mail]
www.imp-pumps.com
CE
Compliance of the EU Directive Harmonized Standard
product with EU
standards
Machinery 2006/42/EC 809
Low Voltage 2006/95/EC EN 60335-1
EN 60335-2-51
Electromagnetic compatibility
2004/108/EC
EN 55014-1; EN 5014-2;
EN 61000-3-2; EN 61000-3-3
CE
Compliance of the EU Directive Harmonized Standard
product with EU
standards
Machinery 2006/42/EC 809
Low Voltage 2006/95/EC EN 60335-1
EN 60335-2-51
Electromagnetic compatibility
2004/108/EC
EN 55014-1; EN 5014-2;
EN 61000-3-2; EN 61000-3-3
IMP PUMPS d.o.o.,Pod hrasti 28, 1218 Komenda
SLOVENIJA
tel.: [phone], fax: [phone]
e-mail: [email protected]
www.imp-pumps.com

GB
-15-
CONTENTS
1. GENERAL INfORMATION...........................................................................................16
1.1
USeS
.....................................................................................................................16
1.2
Technical daTa
......................................................................................................16
1.2.1 Pump labeling ......................................................................................................16
1.2.2 Connection and electrical data ............................................................................16
2. SAfETy ........................................................................................................................17
2.1
danger symbols
....................................................................................................17
2.2
risks
....................................................................................................................17
3. PUMP DESCRIPTION...................................................................................................17
3.1
regulaTion modes
..................................................................................................17
3.1.1 Differential pressure regulation (∆p) ....................................................................18
3.1.2 RPM regulation ....................................................................................................18
3.1.3 Power limitation ...................................................................................................18
3.2
electrical connectionS
.........................................................................................18
4. PUMP INSTALLATION .................................................................................................19
4.1
inStallation into pipe lineS
.....................................................................................19
4.2
connecTion To power and signal lines
...................................................................20
4.3
connecTion To neTwork
.........................................................................................20
5. COMMUNICATION AND CONTROL ............................................................................21
5.1
control light
.......................................................................................................21
5.2
digiTal inpuTs
........................................................................................................21
5.3
24V supply
............................................................................................................22
5.4
relay ouTpuT
.........................................................................................................22
5.5
ethernet
..............................................................................................................22
5.5.1 Search of a “lost” pump .......................................................................................22
5.6
pUmp SettingS
.......................................................................................................23
5.6.1 Factory defaults ...................................................................................................23
5.6.2 Web interface settings .........................................................................................23
6. MAINTENANCE AND SPARE PARTS .........................................................................24
7. TwIN PUMP (NMTD) ....................................................................................................25
7.1
operation
.............................................................................................................25
7.2
neTwork connecTion
.............................................................................................25

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1.
General infOrmatiOn
1.1 Uses
The circulating pumps of the mentioned types are used for the transfer of liquid media within
the system of hot-water heating, air-conditioning and ventilation. They are designed as single
or twin variable-speed pumping aggregates where the speed is regulated by electronic device.
They are to be used with pure water or glycol/water mixture.
1.2 TechnicaldaTa
1.2.1 pumplabeling
1.2.2 cOnnectiOnandelectricaldata

NMT 40 NMT 50 NMT 65 NMT80/100
Rated voltage (U) 230V AC ±15%, 47-63Hz Pumps can operate at reduced voltage with limited power
P=Imax*U.
Rated power (P) 500W 800W 1100W 1600W
Rated current 2.2A 3.5A 4.8A 7.0A
Current limit (Imax) 6A 8A
Startup Built-in startup circuit.

Protection class IP44
Insulation class 180 (H)
Motor protection Thermal - built in
Medium temperature -10°C do 110°C
Ambient temperature 0°C do 40°C1
Water quality VDI 2035
Rated pressure 6/10 bar
EMC (89/336 EEC) EN 61000
LVD (73/23/EC) EN 60335-1
EN 60335-2-51
Machine safety (98/37/EC) EN ISO 12100
1 Ambient temperature should be 25°C or lower when medium exceeds 80°C.

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2. safety
These instructions should be studied carefully before installing or operating the pump. They are
meant to help you with installation use and maintenance and to increase your safety. Installation
should only be performed with regards to local standards and directives. Only qualied personnel
should maintain and service these products.
2.1 dangersymbols
Safety precautions which, if ignored, could cause personal injury are indicated by the symbol
above:
Precautions that are necessary to adhere to avoid machinery damage carry:
Tips that could ease pump handling are marked with:
2.2 risks
Failure to comply with safety precautions could cause personal injury or machinery damage and
loss of right to refund. Safety functions are only guaranteed if the pump is installed, used and
maintained as described in this manual.
3. pumpdescriptiOn
Electronically commutated regulated NMT pumps consist of two main parts centrifugal pump
of appropriate head and electronic regulator. Hydraulic part is hermetically sealed from motor
assembly and has no moving seals. NMT pumps are powered by ECM permanent magnet motor
that does not consume any energy to magnetize the rotor and so provides high energy efciency.
ECM motor is run by frequency converter with integrated PFC (Power Factor Correction) lter.
Converter estimates current ow and head from the motor loading. That information is essential
for differential pressure control.
3.1 regulaTionmodes
Various regulation parameters (desired head, supply power, rpm limit) will reduce the head until
the pump achieves desired response.

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3.1.1 differentialpressureregulatiOn(∆p)
Fig. 1
Unregulated pump decreases head with increasing ow (Fig. 1, curve a). Typical system with
thermostatic valves increases the head when the valves are closed and hot water ow is not
needed. Electronic regulation can provide constant head by modifying power input (Fig. 1,
curve b). Additional energy savings and noise reduction are achieved with proportional head
regulation that also compensates for pressure drop in the pipes (Fig. 1, curve c). Pump is factory
set to operate in this mode. »Qprop« factor provides user adjustable curve slope. Qprop of 0%
means that the head does not exhibit any dependence to ow. Qprop set to 60% means that the
pressure will drop for 60% from set value when there is no ow. For example if the head is set
to 5m, the pump will only provide 2m when the valves are closed.
Substantial percentage of glycol in the mixture can inuence regulation.
3.1.2 rpmregulatiOn
Provide regulation similar to manually adjustable pump.
3.1.3 pOwerlimitatiOn
Articially limit power consumption and output.
3.2 elecTricalconnecTions
Connection box layout:
Fig. 2

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(Fig. 2)
Markings Descriptions
L230V AC, electricity power supply.
N
PE Safety ground.
FC Ferrite core for HF interference compliance. PE, L and N wires should
be lead thru it. (Part is in the package with cable glands).
NC Normally closed relay contact.
C Common relay lead.
NO Normally closed relay lead.
IO2 Digital input 2.
24V +24V@100mA max.
GND Digital input common return.
IO1 Digital input 1.
ETHERNET Ethernet connection.
The pump has a built-in over current fuse and protection, temperature protection and basic
overvoltage protection. It does not need additional thermal protection switch. Connection leads
should be capable of carrying rated power and properly fused. Ground lead connection is
essential for safety. It should be connected rst. Grounding is only meant for pump safety. Pipes
should be grounded separately.
4. pumpinstallatiOn
4.1 insTallaTion inTo pipe lines
Pump is protected with a double box during transport. It can be lifted from the box with internal
handles or by lifting it by the heat sink.
Pumps might be heavy. Provide yourself help if needed.
Pumps are designed to be built in connecting anges. Use all screws. The connecting anges
are designed for nominal pressure PN 6/10.
Ambient and medium permissible temperatures
Ambient temperature
[C°]
Maximum medium temperature
[C°]
do 25 110
30 100
40 90

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For pump to operate with minimal vibrations and noise it should be installed:
- into the pipelines with axis (1-1) in horizontal position:
Fig. 3
- pipes should be without curves for at least 5-10 D (D = rated pipe diameter) from the anges.
Pump must not be used in the safety pipelines.
Pump should not be used as a holder during welding!
Desired head orientation can be achieved by rotating pump head. Pump is mounted to hydraulic
casting with four screws. By unscrewing those head can be turned.
When reassembling, care should be taken to ensure seal t. Failing that,
water could cause damage to pump internals.
Ambient should be dry and illuminated as appropriate. Pump seals prevent dust and particles
from entering as prescribed by IP class. Make sure that the distribution box cover is mounted
and that cable glands are sealing.
Pump will provide the longest lifetime with ambient at room temperature and moderate medium
temperature. Prolonged operation at elevated temperatures could increase wear. Aging is
accelerated by high power and high temperatures.
Pump head and drains between hydraulic castings and motor housing
should not be thermally insulated as insulation could interfere with cooling
and condense drainage.
Hot medium can cause burns! The motor can also reach temperatures that could
cause injury.
4.2 connecTionTopowerandsignallines
Chapters »Electrical connections« and »Communication and control« contain detailed
information about electrical connections.
4.3 connecTionToneTwork
In order to use various web tools, pump should be connected to network or a personal computer
over Ethernet plug. User CAT-4 or better network cable connected to “PATCH” conguration if
plugged into a network or wired as “CROSSOVER” for connection to PC.

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To achieve pump IP protection, network cable should be lead over the inlet and then
crimped to a connector. Ethernet plug is galvanicaly insulated, but the rest of the
cabling could still present shock hazard. All connections should be made with the
power turned off.
If more than one pump will be connected into network, each individual pump should
have its IP address and NetBIOS name changed and noted. That will prevent
network collisions and provide naming service in relation to pump function.
5. cOmmunicatiOnandcOntrOl
5.1 conTrollighT
Control light on the front panel provides fast overview over pump operation. Blue color signalizes
correct operation while red indicates an error.

Blinking Pump is in standby and not pumping water.
On Pump is operating as set.
Red light indicates error by blinking error codes. Sequence of blinks is interrupted by a pause.
The number of blinks between two pauses is the error code.

Error code Description
1Motor is lightly loaded. This indicates that the pump is probably running dry –
ll the system (might need unairing)
2Pump can not start. Rotor might be blocked – remove head of pump and
check if the rotor turns freely between hydraulic ceiling and stator
3Motor has overheated – too hot medium, over isolated head of pump or non-
functioning motor
4Frequency converter error – pump has or will have error – call professional
5Stator or rotor faulty – call professional
If the pump is unresponsive, disconnect and connect it back to the electrical grid.
5.2 digiTalinpuTs

Maximum input voltage 32V DC
Input impedance ~5kΩ
Logical »1« voltage >8V
Logical »0« voltage <2V
Insulation To supply voltage: 4kV@1s, 275V permanent.

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
I1 »RUN«. Integrated pull-up resistor. Pump stops when input is connected to 0V.
I2 »MAX«. Pump will start to operate with maximum power if logical “1” (24V) is
detected.
5.3 24Vsupply
Output is meant for automation elements.

Maximum current up to 100mA
Output voltage 24V ±20%
Output ripple under 1V
Misconnection or overload could cause pump shutdown or even permanent
damage.
5.4 relayouTpuT

Rated current 8A
Maximum voltage 250VAC
48VDC
Maximum load up to 500VA
Default function ALARM »error«
5.5 eTherneT

Connector RJ-45
Speed BASE-10, 10Mbit/s
Galvanic insulation To digital inputs: 1.5kV@1s, 48V permanent
To line voltage: 4kV@1s, 275V permanent
Connection TCP/IP
Services http server and client, FTP server
Web language HTML 1.1
5.5.1 searchOfa“lOst”pump
If you have forgotten IP address or NetBIOS name or if you accidently set it to an
incorrect value, pump can still be found with network analyzers. Freware tools like
»WireShark« or »EtherDetect« can help you to trace the pump as it periodically
tries to contact its twin. This is true even in the case of single pump. You can trace out the device
that sends out requests and contact it directly.

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5.6 pUmp seTTings
5.6.1 factOrydefaults
Pumps are set to provide 7m of head with proportional pressure regulation. These settings will
provide energy efciency. If factory settings are not suitable they can be modied over Ethernet
connector and Web interface. Default IP address is 192.168.0.245 and default NetBIOS name
is »nmtpump«.
Pump can be brought to standby or maximum power via digital inputs.
5.6.2 webinterfacesettings
When the pump is connected to network or another computer, it can be reached by typing its IP
address or NetBIOS name into browser’s address line. Default IP address is 192.168.0.245 and
default NetBIOS name is »nmtpump«.
Fig. 4

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5.6.2.1 Overview
(web page OVERVIEW)
Displays pump operation summary, like:
• Power consumption,
• Grid current,
• RPM,
• Estimated head,
• Estimated ow,
• Estimated efciency,
• Motor status,
• Heatsink temperature,
• Statistics,
• Remote control.
5.6.2.2 pumpsettings
(Web page PUMP)
Page is meant to provide regulation settings.
• “Limit head to” will set maximum allowable head.
• “Hmax proportional to Q” will set the ratio between head and ow.
o Hmax = 0%: constant pressure is set and should not exhibit noticeable change
until maximum power is reached.
o Hmax = X%: parameter will set the percentage of drop in head from maximum to
closed valve.
• “Limit rpm to”: will limit motor speed
• “Limit power to”,
• “Limit grid current to”,
• “Limit heatsink temperature to”.
• Switch on the relay when:
o 0: no function.
o OPERATION: pump ready to operate.
o RUN: pump operating.
o ERROR: error detected.
• Input I1 is:
o 0: no function.
o DUPLEX: twin connection.
o RUN: remote start.
o MAX: maximum head.
o EXTERNAL: external pressure switch.
o Input I2 has functions the same as I1.
• SAVE: will write settings in permanent memory,
• TEST: Will use settings but will not save them. Restart will restore previous settings as will
pressing »RESTORE« button.
5.6.2.3 netwOrksettings
(Web page NETWORK): Provides a way to change network conguration.
Buttons operate in a similar manner as on previous page.
5.6.2.4 loG
(Web page LOG)
Page will display possible errors and some unusual events.

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5.6.2.5 help
(Web page HELP) will redirect you to www.imp-pumps.com Possible software upgrades and
manuals will be available.
6. maintenanceandspareparts
NMT pumps are designed to operate without maintenance for several years. Spare parts will be
available for at least 7 years from the warranty period expiration.
7.twinpump(nmtd)
7.1 operaTion
The main purpose of the twin pump is uninterrupted operation when one of the pump fails.
Common hydraulic housing is equipped with a change-over ap and two pump heads, separately
connected to grid. Pumps are interconnected with a network cable. During normal operation,
only one pump is active, while the other is in standby. Pumps change duty once per day. Every
pump operates according to its own settings, so parameter changes should be made on both
pumps. If any pump detects an error (red light is blinking) or loss of communication, the standby
pump will start in less than 15 seconds.
7.2 neTworkconnecTion
Both pumps are interconnected with a cross-over network cable. If you wish to connect the
pumps to a local network, replace the network cable with two connections to the nearest
network switch. The left pump has the same network settings as an individual pump. NetBIOS
name is »nmtpump« and IP address is 192.168.0.245. Right pump netBIOS name is set to
»nmtpump2« and IP address is 192.168.0.246. On the »Network« page, »Twin mode with IP:«
eld assigns Twin IP address. Left pump has the IP address of the right pump in this eld, while
the right pump has the address of the left one. If you need to change the IP address of the pump
because you want to network multiple pumps, make sure you also enter the new address into
the connected twin pump.
Single pumps can also work in alternating mode if you connect and set them in a
way outlined in the previous paragraph.
Both pumps start when power is applied and settle for priority with the help of a
random number. The operating time is thus equally shared even if the power is
often interrupted.