Taco 00e Series User manual

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ECM High-Efficiency Circulators
INSULATION SHELL
INCLUDED
Installation & Operation Instructions Manual
VR15, VR20, VR25 & VR30
ALL CIRCULATORS ARE AVAILABLE IN LOW, MEDIUM AND HIGH HEAD MODELS
302-393
SUPERSEDES: New
Plant ID No. 001-5038
EFFECTIVE: August 2, 2021

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WARNING!
Installation and use of this product requires experience and knowledge of this or similar products. Persons withreduced
physical, mental or sensory capabilities must not use this product, unlessproperly instructed and supervised. Children
must not be allowed to play with this product.
WARNING!
Prior to installation and commissioning, read these instructions first.Installation and operation must comply with local regulations.
TABLE OF CONTENTS
1. Symbols & conventions used in this document...3
1.1. Abbreviations and conventions........................................ 3
2. Introduction .......................................................................................3
Section 1 - Installation and Operation.........................4
3. General Uses.......................................................................................4
4. Safety........................................................................................................4
5. Pump Description..........................................................................5
6. Use ..............................................................................................................5
7. Pumped Fluids..................................................................................5
8. Pump Installation ..........................................................................5
8.1.1 Motor Rotation Procedure................................................. 6
8.1.2 After Installation into piping............................................ 7
9. Electrical Connections ...............................................................8
10. Setup and Operation...................................................................9
10.1 Control Panel Layout.............................................................. 9
10.2 Switching the Pump On and O.................................... 9
10.3 Pump Functions........................................................................ 9
10.4 Operation and Mode Selection.....................................10
10.5 Mode Description..................................................................10
10.6 Restoring Factory Settings ...............................................11
10.7 Minimum Speed Adjustment.........................................11
10.8 Parallel Pumping.....................................................................12
11. Specications .................................................................................14
11.1 Application.................................................................................13
11.2 Electrical Ratings.....................................................................14
11.3 Standards, Protection and Flange Conn..................15
11.4 Materials of Construction..................................................15
Section 2 - Controller (VFD) Operation ....................16
12. Features...............................................................................................16
12.1 Specications ..........................................................................17
12.2 BACnet Specications ........................................................17
12.3 Modbus Specications .......................................................17
12.4 Ethernet Specications.......................................................17
12.4 Mode Selection Switch.......................................................17
12.5 Analogue Signals....................................................................18
12.6 Relay Specications ..............................................................18
13. Controller Layout......................................................................18
13.1 Connection considerations...........................................19
13.2 Connection examples ......................................................19
14. Control modes and priorities..........................................20
14.1 Priority of settings ...............................................................20
14.2 Control variables..................................................................21
14.3 Module mode selection..................................................22
14.4 Mode 1.......................................................................................23
14.5 Mode 2.......................................................................................27
14.6 Mode 3 & 4 ..............................................................................28
15. Relay output .................................................................................31
16. Network............................................................................................31
16.1. Bus topology.........................................................................32
16.2. Connecting to pump ad-hoc......................................32
16.3. Connecting to pump via router................................32
16.4 Local Network Setup, Display & Diagnostics......32
17. BACnet................................................................................................39
17.1 BACnet MS/TP communication .................................39
17.2 Data Link LAYER Option...................................................39
17.3 Device Address Binding ..................................................40
17.4 Network Options .................................................................40
17.5 Network Security Options..............................................40
17.6 Character Sets Supported..............................................40
17.7 Supported BACnet Interoperability .........................40
17.8 Analog Inputs ........................................................................41
17.9 Analog Outputs....................................................................41
17.10 Binary Inputs........................................................................42
17.11 Binary Outputs ...................................................................42
18. Modbus...................................................................................................43
18.1 Modbus Related Interface .............................................43
18.2 Modbus Topology...............................................................43
18.3 Connection to Modbus...................................................44
19. Fault nding...................................................................................51
19.1 Error codes...............................................................................51
Performance Curves.............................................................................53
Hydronic Institute Energy Ratings...........................................55
Limited Warranty Statement ........................................................56
NOTE: This is an interactve manual. Clicking on a section below will take you directly to the page.
Click on this icon to return to the Table of Contents

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1. SYMBOLS & CONVENTIONS USED IN THIS DOCUMENT
For Modbus or BACnet use, this manual assumes that the reader is familiar with commissioning and conguring of Modbus
devices. It is also assumed that an existing Modbus or BACnet RTU network on RS-485 wiring with Modbus or BACnet master
is present.
For Ethernet and web interface use, this manual assumes that the reader knows how to congure or already has
precongured Ethernet network.
NOTE:
• Data in this document are subject to change.
• Always verify that the pump is operating as desired after setup is complete.
• Manufacturer cannot be held responsible for problems caused either directly or indirectly by the use of information
in this manual.
2. INTRODUCTION
This manual is broken down into two sections and describes the installation, operation and control module for VR15
through VR 30 Low, Medium and High head range of pumps. Section 1 describes the installation and operation features.
Section 2 describes the control module and its functions.
WARNING! Denotes that a failure to observe those instructions might
cause damage to equipment or pose danger to the user.
Abbreviation Description
Baud, Baud rate Serial communication speed, in bits per second including start, parity and stop bits.
CRC Cyclic Redundancy Check, additional bytes used to conrm valid data transmission.
Ethernet IEEE 802.3, mostly referring to 10BASE-T RJ-45 connector present on board.
H Dierential pressure, often called Head.
LED Light Emitting Diode.
Modbus / BACnet A serial communication protocol used for device automation and remote access.
Q Pump ow or ow rate.
RTU Remote Terminal Unit.
RS-485 Multi drop serial network wiring, used to transfer Modbus data.
1.1 ABBREVIATIONS AND CONVENTIONS USED IN THIS DOCUMENT

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Section 1. Installation & Operation
WARNING: Do not use in swimming pool or spa areas. Pump has not been investigated for these applications.
AVERTISSEMENT: Ne pas utiliser dans une piscine ou un spa. La pompe n’a pas été étudiée pour ces applications.
3. GENERAL INFORMATION, USES:
The 00e VR 15 - VR30 circulating pumps are used for the transfer of liquid media within a closed-looped hot-water heating
or air-conditioning hydronic system. They are designed as single or parallel main/standby operation variable speed pumps,
where the speed is regulated by an on-board electronic device. They are to be used with a water or glycol/water mixture.
4. 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 be performed with regards to local or
national standards. Only qualied personnel should maintain and service these products. Failure to comply with safety
precautions could cause personal injury or machinery damage.
WARNING: To avoid electrical shock, disconnect the power supply to the circulator and the main electrical unit.
Follow all local electrical and plumbing codes.
AVERTISSEMENT: Pour éviter tout choc électrique, débranchez l’alimentation électrique vers le
circulateur et l’unité électrique principale. Respectez tous les codes de plomberie et électriques locaux.
WARNING: Hot surfaces can cause burns. The motor can also reach temperatures that could cause injury.
AVERTISSEMENT: Les surfaces chaudes peuvent provoquer des brûlures. Le moteur peut également
atteindre des températures qui peuvent entraîner des blessures.
CAUTION: The addition of petroleum based uids or certain chemical additives to systems using
TACO equipment voids the warranty.
ATTENTION: L’ajout de liquides à base de pétrole ou de certains additifs chimiques à des systèmes
utilisant un équipement TACO annule la garantie.
CAUTION: Use supply wires suitable for 90°C. ATTENTION: Employer des ls d’alimentation adeqauts pour 90°C.
CAUTION: Misconnection or overload of electrical or signal connections could cause pump
to shutdown or cause permanent damage.
ATTENTION: Toute erreur de raccordement ou surcharge des connexions électriques ou de
signalisation peut entraîner un arrêt de la pompe ou des dommages permanents.
CAUTION: Do not operate pump without the electrical cover securely attached.
ATTENTION: Ne pas actionner la pompe si le couvercle électrique n’est pas correctement xé.
CAUTION: Pump motor, electronics enclosure and condensate drain openings should not be thermally
insulated as it could interfere with cooling and condensate drainage.
ATTENTION: Le moteur de pompe, l’enceinte électronique et les ouvertures de drainage de condensat
doivent être thermiquement isolés car il peut y avoir interférence avec l’évacuation de condensat et de
liquide de refroidissement.

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5. PUMP DESCRIPTION
The high eciency, electronically commutated 00e VR15 - 30 model pumps consist of two main parts, the centrifugal
pump and the electronic control. The hydraulic part is hermetically sealed from the motor assembly and has no mechanical
seals. 00e pumps are powered by an electronically commutated permanent magnet motor (ECM) which does not consume
energy to magnetize the rotor, providing superior energy eciency. The ECM is controlled by an on-board frequency
converter. The converter estimates current ow and head from the motor load, information essential for self-sensing
system reactive operation.
6. USE
All Taco 00e VR pumps are intended for circulation of solid-free uid in pressurized, hot and chilled hydronic systems.
The self-sensing ECM pump constantly calculates pressure and ow, and adapts its speed to the appropriate ow.
Stainless steel models are intended for potable drinking water applications and can be used for HVAC systems as well.
7. PUMPED FLUIDS:
Use water and water/glycol mixtures only. Water/glycol mixtures must be HVAC-system compatible and should have
no more than 50% concentration of glycol. Excessive glycol concentrations may lead to reduced performance. The
uid shall not consist of aggressive or explosive additives and mixtures of mineral oils and solid or brous particles.
The pump should not be used for pumping ammable, explosive uids, and in an explosive environment. To reduce
potential abrasive damage a magnetic iron removal device is recommended to remove excessive iron-oxide from the
system uid.
8. PUMP INSTALLATION:
The 00e® pump is protected with a double box packaging during shipping. It can be lifted from the box with
internal handles or by lifting it by the heat sink. The included insulation shell reduces thermal energy loss to the
surrounding environment and protects the pump from shipping damage.
Pumps are designed to be installed using standard ANSI class 125 anges. It is recommended that the 00e pumps be installed
with at least 5 to 10 pipe diameters of straight pipe on the inlet and outlet of the pump. Use all nuts and bolts to attach
companion anges to the pump anges.
All VR model pumps should be installed with the motor shaft axis in a horizontal position (see Figure 1). Failure to do so
may result in excessive noise and vibration, premature bearing failure and may void warranty.
Desired pump orientation can be achieved by rotating the pump casing. The pump is mounted to the volute with four
screws. By unscrewing those the head can be turned. See detailed Motor Rotation Procedure 8.1 below.
Caution: When reassembling, care should be taken to avoid damaging the o-ring and insuring a tight seal
CAUTION: Pump may be heavy. Provide yourself help if needed.
ATTENTION: La pompe est lourde. Veillez à deman-der de l’aide si nécessaire.
ATTENTION!! Installing pumps in UNAUTHORIZED positions will result in voiding the warranty.
For replacement O-Rings please consult Repair Parts List.
Figure 1 RECOMMENDED INSTALLATION POSITIONS
UNAUTHORIZED INSTALLATION POSITIONS

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8.1 Motor Rotation Procedure Caution: Motor is heavy!
Caution: If system is lled and pressurized, shut o valve before and after the 00e. Allow to cool if system uid is hot.
8.1.1 Motor Rotation Procedure
The factory default orientation of the Volute and Frequency Drive has the
bottom of the VFD and the pump inlet at the 6:00 position, motor shaft
horizontal. The following is the procedure is the VFD needs to be rotated.
IMPORTANT NOTE: It is highly recommended motor rotation occurs prior to
installing. If the pump is installed, rotate prior to lling and pressurizing. If the
pump is installed and the system lled / pressurized prior to rotating, system
uid will leak out of the motor/volute when the allen screws are removed.
Ensure the pump is bled of uid prior to rotating, then purged of air
prior to powering back up.
• In a cross pattern, loosen and remove the 4 allen screws holding the
motor to the volute.
• With your hands, rotate the motor to the desired position. In the event the
motor will not rotate, using a at bladed screwdriver slightly loosen the motor,
then rotate. If all else fails completely remove the motor and reinstall in
the desired conguration.
• Ensure the Volute O-Ring is placed in the volute, between
the rotor assembly and the volute.
• In a cross pattern, tighten the 4 allen screws.
• Recommended to test run prior to lling and pressurizing system
(an E10 Low Load / Dry Run error will occur after 20 to 30 seconds of dry
running – temporarily dry running will NOT damage the pump).
If an E11, E24 occurs remove the motor and inspect the impeller for evidence
of binding in the volute. Re-align, reassemble and re-test.
Flange Bolt Sizes PUMP CLASS 120 ANSI FLANGE
Model/Flange Size Bolt Hole Diameter Flange Thickness Bolt Hole Diameter Flange Thickness Min. Bolt Size Qty.
VR15 (1-1/2”) 0.63 0.715 0.62 0.688 1/2” x 2-1/8” 4
VR20 (2”) 0.75 0.76 0.75 0.75 5/8” x 2-3/16” 4
VR25 (2-1/2”) 0.75 0.76 0.75 0.875 5/8” x 2-3/16” 4
VR30 (3”) 0.75 0.84 0.75 0.938 5/8” x 2-1/2” 4
ATTENTION: Operation outside recommended conditions may shorten pump lifetime and void the warranty.
Ambient
Temperature [˚F]
Fluid Temperature
Min. [˚F] Max. [˚F]
VR15 (1-1/2”) 36 230
VR20 (2”) 36 212
VR25 (2-1/2”) 36 203
VR30 (3”) 36 175
Ambient
Temperature [˚C]
Fluid Temperature
Min. [˚F] Max. [˚F]
Up to 25 2 110
30 2 100
35 2 90
40 2 80
1
2
3
4

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8.1.2 After Installation into piping
•Carefully open shuto valves and check for leaks.
•Make sure that the electrical box cover is mounted and that all cable glands are installed to prevent
dust and particles from contaminating the electrical box.
•Before starting the pump, the system (and pump) must be lled with uid, and air completely bled out
of the system. For proper operation, pressure must be maintained on the suction side of the pump.
The pump does not have screws for bleeding the air, as it is automatically bled as a function of the design
of the pump. Temporary air in the pump will generate noise that disappears after a short time.
•Extended periods of dry running will activate an E10 low motor load error and in most cases reduce
or eliminate sleeve bearing damage caused by dry run conditions
WARNING!
•The maximum system pressure is 175 psi (1MPa or 12 Bar)
•The pump must always be lled with system uid as it is water lubricated and water cooled
•The motor stator openings (condensate drain holes) and stator housing should not be insulated since
the thermal insulation may prevent motor cooling and prohibit condensate from escaping from the
motor housing when used in high humidity environments where the uid temperature is below
the motor temperature.

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9. ELECTRICAL CONNECTIONS
Connection of the pump must comply with local electrical codes and be carried out by qualied personnel.
When connecting the pump, the following must be considered:
• Liquid tight power connection required to maintain the Totally Enclosed, IP44 enclosure rating.
Use the supplied thread adapter for exible or armored cable installations.
• Local or national electrical code requirements supersede Taco’s specication.
• Install an electrical disconnect to comply with national electrical code.
• Connection of the power supply electrical cable must be done in a manner that ensures it does not
contact the motor housing and volute of the device, due to potential high temperatures of both.
The pump has built-in over current fuse protection, temperature protection, and basic overvoltage protection. It does
not require additional overload protection devices unless required by local electrical codes. Power supply cabling should
be capable of carrying rated power and be properly fused. Grounding connection is essential for safety and should be
connected rst. Grounding is only meant for pump safety. System piping should be grounded separately.
Wiring Instruction:
The Taco VR Series is rated for use in single phase applications. It is essential wiring is completed by a qualied
technician, in accordance with all local codes and regulations. Input voltage ranges as follows:
• 110 to 240 Volt specic to VR15 and VR20, Low and Medium head models
• 200 to 240 Volt specic to VR15 and VR20 High Head models and all VRF 25 and 30 models
LL 1
NL 2
200-240V 115V
Ground
Line
Neutral
CB
Circuit
Breaker
+24 V SET3 / FB SET2 / MAX COM / ØV SET1 / RUN
+
-
0-10 vdc
Low voltage wiring terminals
COM / ØV B/D - A/D +
NO C NC
GROUND
NEUTRAL
LINE
LINE
VOLTAGE
Line voltage wiring terminals
MODE
RS 485ANALOGRELAY ETHERNET
LED1 LED2
L N
Run Relay
by Others

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10. SETUP AND OPERATION:
10.1 Control Panel Layout
1. Bar Graph of Values
2. Numerical Display of Values
3. Unit Display of the Currently Selected
(Watts, Head Setting, Flow, or Speed)
4. Selected Mode
(Automatic, Proportional Pressure, Constant Pressure,
Constant Speed and Night Setback)
5. [ + ] Button
6. [
3 ] Button
7. [ –] Button
10.2 Switching the Pump On and O
When the pump is powered for the rst time, it operates with the factory default settings in automatic mode.
To switch the pump o, press and hold the [ – ] key for 5 seconds, until OFF is shown on the display. When the pump
is switched o, the numerical display shows OFF.
To turn the pump on, press the [ – ] key briey.
10.3 Pump Functions
[–] Key
Short press:
•
Scrolling through parameters downwards, not changing parameter values.
• Scrolling through modes downwards when mode selection is selected.
• Changing parameters downwards when setting parameter values.
Long press:
• 3 seconds together with [ +] key to select night setback mode.
• 5 seconds to switch o the pump.
• 5 seconds together with [ 3] and [ +] keys to restore pump to factory default settings.
[ 3 ] Key
Short press:
• To conrm currently selected values of both mode and parameter.
Long press:
• 3 seconds to enable mode selection.
• 5 seconds together with long press on [ + ] and [ – ] keys to restore pump to factory default settings.
3s
3s
5s
ECM HIGH-EFFICIENCY CIRCULATOR
00e
series
®
W
FT
GPM
xRPM
1
32
4
7 6 5

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[ + ] Key
Short press:
• Scrolling through parameters upwards, not changing parameter values.
• Scrolling
• Changing
Long press:
• 3 seconds together with [ – ] key to enable night setback mode,
• 5 seconds together with [
3 ] and [ – ] keys to restore pump to factory default settings.
10.4 Operation and Mode Selection
Once the desired mode is selected, the factory default parameter is displayed numerical display (except for activeADAPT®).
If required, the parameter value can be changed with the [ + ] or [ – ] key, then conrm the parameter setting by pressing
the [
3 ] key. To activate or deactivate the night setback feature, simultaneously press and hold the [ + ] and [ – ] keys for
3 seconds.
To scroll through the parameter values within a mode
10.5 Mode Descriptions
The pump can operate in 5 dierent modes. We can set the pump in the most appropriate mode,
depending on the system where the pump operates.
The pump modes are:
• activeADAPT® (factory default)
• Proportional Pressure (increased dierential head as ow increases)
• Constant Pressure (constant pressure as ow increases)
• Constant Speed (user adjustable to match system requirements)
• Combined Mode (all mode indicators are o)
To switch between modes (except night mode) press and hold the [
3 ] key for 3 seconds then select [ + ] and [ – ] key.
Once desired mode is selected, press the [
3 ]key to conrm.
activeADAPT® — Factory Default
In activeADAPT mode the pump automatically sets the operating pressure, depending on the
hydraulic system. By doing so, the pump nds the optimal operating position. The parameters
cannot be set; they can only be scrolled through. This mode is recommended in most systems.
Proportional Pressure
The pump maintains the pressure with relation to the current ow. The pressure is equal to the set
pressure (Hset on the drawing) at maximum power; at 0 ow it is equal to HQ % (default 50%, HQ %
can be set on the pump webpage) of the set pressure. In between, the pressure changes linearly,
relative to the ow. In regulated mode we can only set the pump pressure (Hset on the drawing).
We can only scroll through the other parameters.
Constant Pressure
The pump maintains the currently set pressure (Hset on the drawing), from 0 ow to maximum power,
where the pressure begins to drop. At constant pressure, we can only set the pressure (Hset on the
drawing) which the pump will maintain. We can only scroll through the other parameters.
Constant Speed
The pump operates with the currently set speed (RPMset on the drawing). In the unregulated mode, we
can only set the speed at which the pump will operate. We can only scroll through the other parameters.
Combined Mode
Multiple limits can be set only over the web interface. None of the other modes are on.
Night Mode
When the pump operates in night mode, it automatically switches between the selected operating
mode and the night curve. The transition to the night mode depends on the uid temperature in the
system. When the night mode is enabled, its icon illuminates and the pump operates in the selected
operating curve of the mode. When the pump identies the media temperature falling by 60 to 70˚F (15-20˚C) over a 2 hour
time period, the icon starts to blink and the pump switches to the night curve. When the uid temperature rises again, the
icon stops blinking and the pump switches to the operating curve in the selected operating mode. The night mode operates
only in combination with the above indicated modes. It is not an independent mode.

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10.6 Restoring Factory Settings
To restore factory defaults, press and hold all three buttons for 5 seconds. The pump will be set to the acctiveADAPT® mode
of operation. Any previously set values for pressure and RPM will be deleted.
10.7 Minimum Speed Adjustment
1. Connect to the pump HTML Web Page
2. Open“Pump”Tab (see below)
i. Min Setpoint dropdown window
1. Adjustable between 10% and 100% of full speed in 10% increments
2. Select a % for minimum speed to achieve preferred minimum ow
(refer to Overview Tab for ow – see below)
3. CLICK SAVE!
4. If min ow needs to be increased, go back to the pump tab and increase setpoint %,
click save and note change ow in the Overview Tab.

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10.8.2 Parallel Pump Set-up:
2.1 To enable the Twin Pump Function
– IP Address setting requirements…
2.1.1 Lead Pump:
Main IP Address (default) 192.168.0.245
Twin Pump IP Address 192.168.0.246
2.1.2 Lag Pump:
Main Pump IP Address 192.168.0.246
Twin Pump IP Address 192.168.0.245
2.1.3 Setting Lag Pump IP Address via Mode Dial:
2.1.4 Set Mode dial to 8
2.1.5 Perform a hard reset (cycle main power o, wait for 30 seconds and power on)
2.1.6 Set Mode back to prior Mode (default Mode 1)
2.1.7 Perform a hard reset
2.1.8 IMPORTANT! After this change, when connecting to the Lag Pump via
laptop use the new IP Address 192.168.0.246
10.8 Parallel Pump Instructions
10.8.1Twin Pump Function: The VR Series Parallel Pump Function enables the communication between two pumps
when piped in parallel, without the use of additional control devices. Parallel pump control requires both pumps
connected via a CROSSOVER Ethernet cable. The installation of a check valve is required on the discharge side of
each pump, installed at least 10 pipe diameters from the pump discharge. Failure to install check valves will cause
reverse ow through the o pump and may damage the electronics and cause lower than required system ow.
1.1 Automatic Alternation: To ensure equal run times the pumps are alternated every 24 run time hours.
The alternation hour period is not adjustable.
1.2 Back-up Operation: If the operating pump experiences an overload condition
(See Section 19) an enable (run) signal is sent to the back-up pump. The back-up will
remain active until the cause of the overload is corrected.
1.3 Cascade Operation: If the ow demand exceeds the maximum ow of the operating pump a
run signal is sent to enable the o pump, running both pumps at the same time. The pump
system returns to single pump operation as the ow demand drops. It is IMPORTANT both pumps
are the same model and have the same settings and are NOT set on activeADAPT mode.

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2.2 Setting Lag Pump IP Address via HTML page
2.2.1 Connect Laptop with standard Ethernet cable
2.2.2 Enter IP Address 192.168.0.245 in any Internet browser
(you do not need to connect to the internet)
2.2.3 Once connected, navigate to the Network tab – make IP Address
changes for Lag pump
2.2.4 CLICK SAVE
10.8.3 Conrm Pump to Pump Communication
3.1 Connect both pumps via CROSSOVER Ethernet cable
3.2 Ensure both pumps are powered
3.3 Observe the Ethernet RJ-45 port’s LEDs on both pumps
3.3.1 LED1 LINK: Slowly blinking when electronics powered, permanently lit
when communication established
3.3.2 LED2 ACT: Indicated Ethernet or RS-485 activity
3.4 Optional conrmation of Pump to Pump communication
3.4.1 Power both pumps
3.4.2 Connect the CROSSOVER Ethernet cable
3.4.3 One of the pumps should run, the other should be in standby
3.4.4 Power o the running pump. After 10 to 15 seconds the standby pump should come on
3.5 IMPORTANT Ethernet cable installation recommendation
3.5.1 Due to the enclosure rating an Ethernet RJ-45 cable end will typically not t
through the drive cover opening consequently the RJ-45 connector should be tted
to the Crossover Ethernet cable after it is fed through the drive cover opening.
• For indoor use only - employer uniquement a l’interieur.
Fluid Temperatures VR15 & VR20 VR25 & VR30
112˚F (50˚C) 7.3 PSIA / 0.5 Bar 4.36 PSIA / 0.3 Bar
176˚F (80˚C) 11.6 PSIA / 0.8 Bar 14.5 PSIA / 1.0 Bar
230˚F (110˚C) 20.3 PSIA / 1.4 Bar 20.3 PSIA / 1.4 Bar
11.1 Application:
• Maximum Operating Pressure: 175 PSI (12 bar)
• Water Temperature Range: 36˚ – 230˚F (2.2˚ – 110˚C)
• Ambient Operation Temperature Range: 32˚ – 104˚F (0˚ – 40˚C).
Ambient temperature should be 104˚F (40˚C) or lower when uid temperature exceeds 194˚F (90˚C).
• Relative Humidity: Max. 95%
• Designed for closed loop heating and cooling systems pumping water or a water/glycol mixture.
• NPSHr - Minimum static inlet .pressure (absolute) at pump suction to avoid damage to the bearing assembly:

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11.2 Electrical Ratings:
Model VR15L VR15M VR15H VR20L VR20M VR20H VR25L VR25M VR25H VR30L VR30M VR30H
Input Voltage
All single phase, 47 To 63 Hz)110/240 110/240 200/240 110/240 110/240 200/240 200/240 200/240 200/240 200/240 200/240 200/240
Max Power (HP) 0.37 0.65 0.91 0.5 0.75 1.1 0.75 1.1 2.1 1.1 1.9 2.1
Max Power (W) 270 480 680 370 560 820 560 810 1550 800 1380 1550
Rated Current (A) 1.2 2.1 2.9 1.7 2.4 3.6 2.5 3.5 6.6 3.5 6 6.6
Current Limit (Max) (A) 6 6 6 6 6 6 6 6 8 6 8 8
24V Supply Output Max current up to 100 mA, Output voltage of 24V +/_ 20%, Output ripple under 1V
Relay Output 8A, Maximum Voltage 250 VAC, 48 VDC, Load up to 500 VA
Digital Inputs
Maximum Input Voltage: 32 VDC
2 Inputs, 1 output
Logical»1«Voltage> 8V,Logical»0«Voltage< 2V
Ethernet
RJ-45 Connector
Services: http server and client, FTP server

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11.3 Standards, Protection and Connection:
• Insulation: Class H
• Enclosure: Class 2, IP44
• Integrated Motor Protection (electronically protected)
• Continuous Duty
• UL778,1004-1,508C
• CAN/CSA C22.2 #108, #100, #107.1 EMC(89/366EEC):EN61000
• LVD(73/23/EC):EN60335-1,EN60335-2-51
• Machine Safety(98/37/EC): EN ISO 12100
• Flange Connections: Class 125/150 ANSI 4-bolt
11.4 Materials of Construction:
Casing (F Models).................Cast Iron, Cataphoresis Coated
Casing (SF Models)..............304 Stainless Steel
Impeller......................................PES GF-30
Shaft .............................................Steel ANSI 420
Bearing........................................Carbon

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Section 2. Controller (VFD) Operation
12. FEATURES
This section describes the controller features for VR 15 through 30 L, M & H range of pumps.
The controller is used for various remote control applications, including:
• Remote on/o
• Analog 0-10Vdc or PWM control
• BACnet and Modbus remote control
• Status relay feedback
• Web access over Ethernet
There are several multiple connection congurations.
Not all functions can be used simultaneously.
• on/o + 0..10 V + relay output
• Modbus & BACnet RTU + Relay output
• Ethernet + on/o + 0..10
• Modbus & BACnet RTU + Ethernet
• Ethernet + on/o + relay output
12.1 Specications
Below is an overview of Controller specications.
For details, please refer to appropriate sections of this manual.
General Data
Ambient humidity < 95 % relative, non-condensing Also see appropriate pump data for
other ambient specications.
Power supply and connection 5 V@500 mA supplied by the pump 6-pin connector further extended for display.

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MODBUS SPECIFICATIONS • 12.3
Data protocol Modbus Remote Terminal Unit (RTU) ---
Modbus connector Screw-less terminals 2+1 pins. See section 16.3 “Connection to Modbus”
Modbus connection type RS-485 ---
Modbus wire conguration Two-wire + common Conductors: A, B and COM (Common). See section 16.3 “Connection to Modbus”.
Communication transceiver Integrated, 1/8 of standard load Connect either via passive taps or daisy chain.
Maximum cable length 1200 m See section 16.5 “Termination”.
Lag (Secondary) Pump address 1-247 Default is 245, settable over Modbus. See section 16.4 “Speed, parity and address”.
Line termination Not present
Line termination is not integrated. For low speed/short distance,
termination can be omitted. Otherwise, terminate the line externally
on both ends.
Supported transmission speeds 1200, 2400, 4800, 9600,
19200, 38400 baud Settable over Modbus register [default=19200].
Start bit 1 Fixed.
Data bits 8 Fixed.
Stop bits 1 or 2 1 stop bit minimum, up to 2 when parity not enabled [default=1]
Parity bit Even/odd/none [default=Even]
Modbus visual diagnostics LED2 Flashing yellow when data reception detected. Combined (OR)
with Ethernet ACT function.
Max. number of Modbus devices 247 Limited by possible Modbus addresses to 247. 1/8 nominal load enables 256 devices.
Max. Modbus packet size 256 bytes Including address (1) and CRC (2) bytes.
Isolation Common ground (COM) with SET1,
SET2 and SET3. Modbus shares common ground with other signals.
ETHERNET SPECIFICATIONS • 12.4
Ethernet connector RJ-45 10BASE-T, 10Mbit/s connection.
Connection type and services
- Web server (port 80)
- Firmware update over web interface
- Optional Modbus RTU over TCP/IP
Default IP address 192.168.0.245 192.168.0.246 for right twin pump.
Ethernet visual diagnostics
LED1 / LINK Slowly blinking when module is powered, permanently lid when link established.
LED2 / ACT Flashing yellow when data reception detected.
Combined (OR) with Modbus data reception indication.
MODE SELECTION SWITCH
Adjustment 10 position rotary switch Position read at power-on.
Used for relay conguration and module conguration reset.
BACNET SPECIFICATIONS • 12.2
Baud Rate 38400 (default)
MAC Address 45 (default)
Device Instance 12345 (default)
Network IP 192.168.0.245 (default)
MAC 02:01:36:BF:42:AD (default)
Gateway 192.168.0.1

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13 Controller Layout
VR 25H, VR 30M and VR30H controller
Terminal Designation Description
MODE
Mode selection rotary switch. Used to congure
mode of operation for the circuit. See section
14.3 “Module mode selection”
LED1 / LINK
Slowly blinking when module is powered.
Blinking fast when Modbus Error.
Permanently lid when Ethernet link established.
Ethernet 10BASE-T RJ-45 connector.
LED2 / ACT Indicates Ethernet activity,
Modbus or BACnet activity.
B/D- RS-485 negative data signal for
Modbus or BACnet.
A/D+ RS-485 positive data signal for
Modbus or BACnet
SET1 / RUN Control signal 1.
COM / 0V RS-485 common and analog input
common (ground).
SET2 / MAX Control signal 2.
SET3 / FB Control signal 3.
NC Normally closed relay contact.
Opens when relay is active.
C Relay common contact.
NO / NO Normally open relay contact.
Closes when relay is active.
All models except VR25H, VR30M and VR30H
Analog Signals (SET1, SET2, SET3) • 12.5
Input Voltage Range -1 to 32 VDC When used as input.
Output Voltage Range 0 to 12 V When used as output. 5 mA max. Load allowed per output.
Input Resistance ~100 kW0.5 mA load is added for most congurations.
--- --- Current sink to COM if congured as output.
Relay Specications • 12.6
Connection Type Screw-less terminals
Rating - 250 VAC, 8A Potential free changeover contact.
- 48VDC, Max Load up to 500VA
+24 V SET3 / FB SET2 / MAX COM / ØV SET1 / RUN
COM / ØV B/D - A/D +
NO C NC
GROUND
NEUTRAL
LINE
RS 485ANALOGRELAY ETHERNET
LED1 LED2
L N

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1
13.2 Connection Examples
DEFAULT (FACTORY) CONFIGURATION
RELAY AND MODBUS CONNECTION
13.1 Connection Considerations
• All cables connected must be heat-resistant to at least +185 °F.
• All cables connected must be installed in accordance with The National Electric Code / NFPA 79 / EN 60204-1.
• All wires to the communications module must be connected to the terminals or cut. No loose wiring permitted.
13.2 Connection Examples
• If voltages over 24 VAC/DC are possible on NO, C, NC terminals:
• Wires should be routed so no wire crosses the center barrier.
• Relay cable (NO, C, NC) must be separated from all other wiring with reinforced insulation.
• Cable outer layer must not be stripped longer than 0.59 inches. See “Cabling preparation”below.
WARNING!
WARNING! Before performing any work on the module, make sure that the pump and module
electricity supply has been switched o and that it can- not be accidently switched on.

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1
RELAY AND ETHERNET CONNECTION
NOTE: 7/8" max length Ethernet connector recommended. The Ethernet connection has a sharp cable bend angle and
reducing the connection terminal length reduces this problem.
NOTE: To maintain pump IP protection, the network cable should be pulled through the gland inlet and then crimped to a
connector.
RELAY AND ETHERNET CONNECTION
NOTE: 7/8”max length Ethernet connector recommended. The Ethernet connection has a sharp
cable bend angle and reducing the connection terminal length reduces this problem.
NOTE: To maintain pump IP protection, the network cable should be pulled through the
gland inlet and then crimped to a connector.
14.CONTROL MODES AND PRIORITIES
14.1 Setting Priority
Several signals will inuence the pump operation. For this reason, settings have priorities as shown in the table below.
If two or more functions are active at the same time, the one with highest priority will take precedence.
Examples:
• Stop on the pump display panel will stop the pump, regardless of external set point.
• If External Run input is inactive, the pump cannot be started over Modbus, but can be
set to max RPM on the display panel.
Priority Pump control panel &
Ethernet settings External signals1
Modbus control
1 Stop (OFF)
---
---
2 Night mode active2 ---
---
3 Max. RPM (Hi) ---
---
4--- Min. curve4---
5--- Stop (Run not active) ---
6--- Max. curve4Stop3
7--- Set point setting4Set point setting3
8Set point setting4--- ---