Taco VR30

-3-
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