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Horstmann HRT4-ZW Manual

Z-wave information
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See also: User Manual and Installation Instructions , Instruction and Installation Manual
HRT4-ZW THERMOSTAT MANUAL
Z-WAVE INFORMATION

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Summary of Contents for Horstmann HRT4-ZW

  • Page 1 HRT4-ZW THERMOSTAT MANUAL Z-WAVE INFORMATION...

  • Page 2: Table Of Contents

    Contents Description of System and Unit ............................3 ......................3 ENERAL ESCRIPTION OF ORSTMANN YSTEM HRT4-ZW U ............................4 ESCRIPTION 1.2.1 Normal Working Mode .............................. 5 1.2.2 Installer Mode ................................5 Network Functions ................................7 ........................... 7 ETWORK NITIATOR EQUENCES ..........................

  • Page 3: Description Of System And Unit

    Figure 1 – System Diagram The HRT4-ZW unit is part of a system designed by Horstmann to primarily control a boiler, by sending Thermostat Mode SET commands or Binary Switch commands to a control device, such as an ASR-RF – see figure 1. The demand temperature (or Set-Point temperature) can be set locally at the Thermostat or remotely from another unit.

  • Page 4: Hrt4-Zw Unit Description

    1.2 HRT4-ZW Unit Description The unit is a self-contained unit that operates from 2 x AAA batteries, and does not contain any pins or terminals for external connection. To power up the unit insert 2 x AAA batteries according to the orientation shown at the battery locations. Figure 2 –...

  • Page 5: Normal Working Mode

    Figure 3 – Rear DIL Switches 1.2.1 Normal Working Mode When the unit is in normal working mode, the LCD will have the format as shown in figure 2, where a measured or demand temperature is shown. Pressing the dial will switch the display between the measured (room) or demand (set) temperatures. Rotating the dial clockwise will increase the demand temperature and rotating anti-clockwise will decrease the demand temperature.
  • Page 6 To exit installer mode return DIL switch 1 to its original position (normal mode), but note that any Z-Wave function in progress will be cancelled by this action. Note: It may be necessary to remove a battery, wait for the display to disappear and then re- insert the battery after leaving installer mode if the ASR relay does not switch when the dial is turned and the gas flame indicator changes on or off.

  • Page 7: Network Functions

    2 Network Functions 2.1 Network Initiator Sequences The following table shows how to select the standard Z-Wave functions. Z-Wave Function Initiator Sequence Mode Indication Include Node on to this Using the dial find ‘I’ and press it to select the function. ‘I’...

  • Page 8: Exclude Node From This Network

    2.3 Exclude Node from this Network When exclude has been selected the unit will wait until a successful outcome is received or a failed outcome is received and indicate this on the LCD with a ‘P’ or ‘F’ respectively. If the installer does not start the exclusion process of the other node within 60s, or the unit does not receive a response within 4 minutes of beginning exclusion with another node, or 5 minutes is up (60s + 4 minutes) a failed outcome will be indicated.

  • Page 9: Protocol Reset

    2.8 Protocol Reset This function provides a full protocol reset as documented by Zensys and a restoration of all parameters to their defaults. The unit will go back to being a primary controller with its factory set Home ID and no record of nodes included on its network or any associated nodes.
  • Page 10 START Is TM or BS supported? Send TM Supported GET message (clear store for result first) Is TM CC supported? modes supported OFF Is BS CC Therm supported? Type? Associate Associate Group 1 ok? Group 2 ok? Figure 4 – Association Algorithm Where Therm Type = Heating Thermostat.

  • Page 11: Device And Command Classes

    The unit shall respond to the GET command with a REPORT containing version information for the Z-Wave code, and a two byte identifier for the application code (written by Horstmann). Production Code will start from Version 1 Revision 0 so the two byte identifier shall start from 0x01 0x00.

  • Page 12: Thermostat Set Point Command Class (V1)

    The unit shall respond to the Multilevel Sensor GET command with a Multilevel Sensor REPORT. The report carries the measured temperature as a 2 byte signed number with a scale of C or F and a precision of 1 decimal place. The report can be requested or sent unsolicited to the nodes in Group 5.

  • Page 13: Binary Switch Command Class (V1)

    3.4 Basic Command Class The basic command class GET and SET commands are ignored, and the REPORT response is not supported. The manufacturer deems that no relevant commands are available for mapping to the basic command class. Horstmann Controls, Bristol, BS4 1UP www.horstmann.co.uk...

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