MICRO-AIR Hydromatic II Manual And Specifications

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Hydromatic II

Manual and Specifications

Innovative Motion Technologies™

Micro Air LLC ™

www.Microair.net

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Page 1 Hydromatic II Manual and Specifications Innovative Motion Technologies™ Micro Air LLC ™ www.Microair.net...
Page 2 Introduction The Hydromatic II system is a water temperature controller for use in loop circulation systems. It provides outputs for reverse cycle and electric heater operation at each control. Features ➢ Modular system for controlling one to eight compressors. ➢ Directly drives AC contactors from 24 to 250 VAC.
Page 3: Getting Started
Getting Started CAN Bus Basics The CAN system (Computer Area Network) is a communications protocol system that facilitates communication between electronic controls. Controls are connected to each other to form a network. Typical controls in a network could include ice makers, chilled and heated water systems, air handlers, and direct expansion systems.
Page 4: Connecting The Control
Connecting the control Make connections to the Hydromatic board as shown in the wiring diagram contained in this manual. A freeze sensor, high refrigerant pressure switch, flow switch and low refrigerant pressure switch must be connected to each slave. If a low refrigerant pressure switch is not used in your application, a wire jumper must be installed between the low refrigerant pressure signal connection and low refrigerant pressure ground.
Page 5: System Overview
System Overview The Hydromatic system operates as a master – slave system. Each control in the system is considered a slave. The master function can be assigned to any slave in the system. The master function operates independently from the slave function within that control.
Page 6: Initial Configuration
Initial Configuration Step 1: All Hydromatic controls and the pump control must be correctly wired and powered up. Step 2: All Hydromatic controls must be in the off mode. If the display shows a screen saver text scrolling across the display, press any button exit the screen saver. The screen on the right shows a master control in the off mode.
Page 7: System Menu Items
System Menu Items Available menu options depend on the system operating mode. While the system is in heat or cool mode, the user can see a diagnostic view of the system, show the event history, or return to the operating screen. When the system is in the off mode, the user can also change parameters from any slave in the system.
Page 8: Operating Parameters
Operating parameters Range Default Units Purge air 0 to 3 Hours Staging delay 15 to 200 Seconds Cool Mode Set point 38 to 57 °F 3.3 to 13.9 °C Heat Mode Set point 100 to 140 °F 37.8 to 60 42.2 °C Hysteresis...
Page 9: System Setup
Differential The temperature change required to start the next stage. This parameter may be set for 1, 2, or 3 degrees Fahrenheit (.6, 1.1, or 1.7 °C) Variable speed enable (Future option) EL. heat transition (Electric Heat Transition) If the sea water temperature drops below the programmed value, the electric heater or heaters if available will be used and all compressors turned off.
Page 10: Current Limit
Brightness 4 to 15 Screen saver brightness 0 to 8 Service high limit 141 to 159 and Off °F 60.5 to 70.6 °C Current limit (Future Option) 1 to 50 Amps Freon sensor type Switch, both Switch * Hi. Pressure maximum PSI 0 to 1016 * Hi.
Page 11 Freon sensor type Sets the type of sensor connected to the high and low Freon pressure input. If only a switch is installed, the parameter is set for switch and JP12 and JP 13 must have jumpers installed. If the parameter is set for gauge or both, JP12 and JP 13 jumpers must be removed. The following options will also become available: Hi.
Page 12 Staging parameters Range Default Group ID 1 to 246 Unit ID 1 to 253 Number of slaves 1 to 8 Heater on slave (group ID) Yes or no Heater on slave (group ID + 1) * Yes or no Heater on slave (group ID + 2) * Yes or no Heater on slave (group ID + 3) * Yes or no...
Page 13 Heater on slave N N is replaced by the unit ID of the control being changed. If the number of slaves is set for 4 and the group ID is 131, you will see menu items for heater on slaves 131 to 134. This parameter allows the user to program which stage an electric heater is installed on.
Page 14: Operation
Press any button to exit the screen saver. Operating Modes Off mode screen Three modes of operation are available in the Hydromatic II off, cool, and heat. On the master in the off mode, the display shows only the power symbol and the menu symbol. Slaves will show only the menu symbol when the system is off.
Page 15 Slave Overview Slave Overview The slave overview will be shown when you are viewing is not configured as a master. This view is also available on the master in the diagnostic view. If the return sensor is installed, the tempered water return temperature for the slave is displayed on the top left.
Page 16: Fault Handling
Fault Handling When a slave detects a fault, the slave will turn off the compressor or heater if they are operating. If the fault has been corrected, the master will attempt to restart the slave after two minutes if required. Multiple recurring faults will cause the slave to be locked out by the master.
Page 17 Slave Bypassed This message is seen at the master as a B on the display in place of the slave number. This indication is not actually a fault but indicates an action was taken by the user to prevent the operation of a slave. VFD Trouble The Variable Frequency Drive (VFD) has reported a fault.
Page 18: Board And Firmware Revisions
Wiring Diagrams Board and Firmware revisions This manual makes reference to Hydromatic II control board printed circuit board (PCB) revisions. The PCB revision is found along the edge of the printed circuit board in white silk screened lettering and starts with PCB-250. PCB-250-00E indicates a revision E circuit board.
Page 24: Specifications
Specifications Set point range: Cooling 35°F to 57°F 1.7°C to 13.9°C Heating 100°F to 140°F 37.8°C to 60°C Temperature range displayed 5°F to 150°F Sensor accuracy +/-2°F at 77°F Low voltage limit 115 VAC units 75VAC Low voltage limit 230 VAC units 175VAC Line high voltage limit 250VAC...
Page 25: Can Bus Wire
CAN bus wire: Compatibility: SAE J1939 Characteristic impedance: 120 ohms Line capacitance: < 80pF per meter at 1 MHz Wire gauge: 20 AWG minimum Specific line delay (velocity factor) : > 70% Mechanical: 2 conductors, twisted pair with shield and drain connection. Examples of acceptable wire: North Wire Data Cell J1939 Waytec CB20-11F 20...
Page 28 Glossary (Simplified for Hydromatic II) Bus: A wired connection consisting of 2 or 3 wires connected to each control in a sequentially wired, daisy chain style connection. CAN: Computer Area Network is a communications system that facilitates communication between electronic controls.
Page 29: Appendix 1: System Menu Overview
Appendix 1: System menu overview Diagnostic view View 1 (See manual) View 2 (See manual) Slave View (Master only) Show event history Events 1-8 Copy unit in system (Items in red available only when system is off) Copy slave Operating parameters Purge air Staging delay Heat mode set point...
Page 30: Appendix 2: Organizing Ids In The Can System
Appendix 2: Organizing IDs in the CAN system Controls are addressed on the CAN bus by assigning group ID and unit ID numbers to each control in the system. System example: Control Unit Group Area 1, Air handler Area 2, Air handler 1 Area 2, Air handler 2 Area 3, DX system Ice maker...
Page 31: Appendix 3: Ordering A System
Appendix 3: Ordering a system The Hydromatic II control system is a versatile platform that can be configured as desired for specific system requirements. The number of sensors required depends on the options in your system. Use the table below to determine the number of sensors required for your system.
Page 32 © COPYRIGHT COPYRIGHT © 2010 to 2025 Micro Air Corporation, All Rights Reserved No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise without prior written consent by Micro Air Corporation.