1. Manuals
  2. Brands
  3. Smart temp Manuals
  4. Thermostat
  5. Halo SMT-850
  6. Manual

Smart temp Halo SMT-850 Manual

Colour wi-fi thermostat with zone control
Hide thumbs Also See for Halo SMT-850:
Table of Contents

Advertisement

Quick Links

Download this manual
SMT – 850
™
Colour Wi-Fi Thermostat
with Zone Control
Smart Temp Australia P/L
2025 © All Rights Reserved

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Halo SMT-850 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Smart temp Halo SMT-850

Summary of Contents for Smart temp Halo SMT-850

  • Page 1 SMT – 850 ™ Colour Wi-Fi Thermostat with Zone Control Smart Temp Australia P/L 2025 © All Rights Reserved...

  • Page 2: Table Of Contents

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Table of Contents ............................3 ELCOME PART 1 - USER INSTRUCTIONS ...................... 4 SMT-850 H ™ ..................... 4 NTRODUCTION TO THE ............................5 CONS ..............12 ETTING AND DITING CHEDULES AND EMPERATURES ........................... 15 VERVIEW PART 2 - INSTALLER INSTRUCTIONS ....................

  • Page 3: Welcome

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Welcome Thank you for your purchase of the Smart Temp Australia P/L SMT-850 Halo™ thermostat. This device has been designed and built by Smart Temp Australia P/L to be an exceptionally reliable and advanced climate control system.

  • Page 4: Part 1 - User Instructions

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Part 1 - User Instructions Introduction to the SMT-850 Halo™ The User Interface The SMT-850 HALO™ features a 7” Touch Window and a colour display. Using this interface, you can set your desired heating and cooling temperatures, schedules, and perform various other actions. If your SMT-850 HALO™...

  • Page 5: Icons

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Current Room Temperature The room temperature is prominently displayed in the centre of the screen. It shows either the current temperature at the SMT-850 HALO™ Wall Controller's location or, if zoning is enabled, the temperature at the selected location for temperature sensing (See Zone Control on page 15 of this manual).
  • Page 6 SMT-850 Halo™ Manual Version 1.13 Jan 2005 In Auto mode, your SMT-850 HALO™ decides whether to activate heating or cooling to maintain your preferred comfort level, recommended if zoning is activated. Fan Mode Fan Auto Intelligently controls your heating or cooling fan. Fan Continuous The fan runs continuously until manually turned off, improving air circulation.
  • Page 7 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Some options will show a larger box, touching the box it will highlight yellow to show that it has been selected. Using the up and down arrows on the right of the page permits you to advance forward or backwards through the options available for the selection.
  • Page 8 SMT-850 Halo™ Manual Version 1.13 Jan 2005 Setup Connection Pressing this button will take you to the Wi-Fi Network Discovery window. In this window you will be able to set up a new connection or change your existing connection to a different router or network. When you first enter the Network Discovery window the SMT-850 HALO™...
  • Page 9 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Pressing the Wi-Fi network information button will give you details about the Wi-Fi network the SMT-850 HALO™ is currently connected with. Pair the App When wish connect your smart device app to your SMT- 850 HALO™...
  • Page 10 SMT-850 Halo™ Manual Version 1.13 Jan 2005 If you want to delete a holiday, tap the delete holiday box. A confirmation window will pop us asking if you are sure you wish to delete the holiday. A holiday event starts and ends at midnight for the dates entered the holiday fields. When a non-perpetual holiday has expired it will automatically be deleted from the SMT-850 HALO™...
  • Page 11 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Current Light Level This value is not adjustable. It indicates the current level of light in the room that the SMT-850 HALO™ can detect and it intended to assist when setting the day and night threshold values. Please do not stand in front of lights or cast a shadow on the SMT-850 HALO™...

  • Page 12: Setting And Editing Your Schedules And Temperatures

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 SD Card The SMT-850 HALO™ has a slot for a micro-SD card on the bottom of the Wall Controller. The SD card is used for storing JPG images, for firmware updates and other reasons. You can remove the micro-SD card by pressing it in until you hear a slight “click”, release pressure and the card should pop out slightly.

  • Page 13: Hospitality Mode

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Hospitality Mode Hospitality Mode is used when minimum user interaction is desired to ensure comfort. Hospitality mode has only one user Window available, the Home Window. Only esential icons are show to reduce user error. The Thermostat Mode (Heat Cool OFF), Fan Mode, and Speed icons are shown on the lower edge of the Window.
  • Page 14 SMT-850 Halo™ Manual Version 1.13 Jan 2005 Temperature Override As good as scheduling is, there are times when you may want to be a bit warmer, or you may be home earlier than expected. Using your smart device or the SMT-850 HALO™ wall controller, you simply adjust the set temperature to your new desired value.

  • Page 15: Zone Overview

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Press the back button to save your changes. The new program will be in effect. Commercial Mode After Hours Timer Override Whenever the SMT-850 HALO™ is in commercial programmable mode and the Stop event is running the LCD will show an “Override”...
  • Page 16 SMT-850 Halo™ Manual Version 1.13 Jan 2005 has a temperature sensor fitted), whether the zone damper is open or closed (if a damper is fitted) or if that zone’s temperature is being used to control your air conditioning system. The SMT-850 HALO™ Zone Control Logic will have been configured by your installer to best suit your needs and or the capability of your heating or cooling system.
  • Page 17 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Additionally, to the high-level protection strategies mentioned above. There are a few simple rules that the SMT- 850 HALO™ will enforce. The SMT-850 HALO™ also insist that at least one zone with a temperatre sensor fitted remain open. If you close the last temperature measurement zone or deselect all temperature measuring zone the SMT-850 HALO™...

  • Page 18: Part 2 - Installer Instructions

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 If you are not a HVAC professional, it is STRONGLY recommended that you do not enter this menu. Part 2 - Installer Instructions New Installation Overview The SMT-850 HALO™ is a remarkably simple thermostat system to install. All wiring is to the thermostat directly so that everything can be installed and tested at the control itself.
  • Page 19 W1/OB Other If the following conditions exist, please call Smart Temp or an authorised service agent for additional guidance. If there are terminals on your existing Wall Controller that have wires in them not shown above. If you have wires in both a Rc and a Rh terminal and these two terminals are NOT linked.
  • Page 20 Note, if there is a wire in a terminal marked W1/OB and you are unable to locate a STD / HP switch then please call Smart Temp or an authorised service agent for additional guidance. (Note – if replacing a SMT-770 thermostat then SW2 position in the SMT-850 HALO™ should match the SW2...

  • Page 21: Wiring Overview

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Halo Switch settings Switch Function 1 Fan Speeds Single Speed Fan Multi Speed Fan HC / HP Logic Heat / Cool Heat Pump Fan in heat logic (Sw2 OFF) Gas Heat in HC Mode Electric heat Reversing Valve logic (Sw 2 ON) Reversing valve on in Cool...
  • Page 22 SMT-850 Halo™ Manual Version 1.13 Jan 2005 24 C This terminal is used as the 0V terminal and is necessary to power the SMT-850 HALO™ thermostat. (if powering with DC this is -ve) The “24” terminal is the active terminal and is used to power the SMT-850 HALO™ (if powering with DC this is +ve) Any voltage applied to this terminal (24V maximum) powers the SMT-850 HALO™...

  • Page 23: Typical Wiring Diagrams

    Given the huge number of control combinations possible with the SMT-850 HALO™ not all can be individually represented here. These are simply the most common wiring configurations. Please contact Smart Temp or your distributor for custom wiring information if needed.
  • Page 24 SMT-850 Halo™ Manual Version 1.13 Jan 2005 This would be one of the most popular Heating and Cooling system controlled by the Inspire system. The default installer menu settings for heat cool settings should be suitable for most applications. If necessary, these can be adjusted to suit the needs of this installation.
  • Page 25 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Single Stage Heat Pump is a quite common use of the Inspire. Note – SW4 sets revering valve logic. The default installer menu settings for Heat Pump settings should be suitable for most applications. If necessary, these can be adjusted to suit the needs of this installation.
  • Page 26 The SMT-850 HALO™ has four universal inputs that have a library of functions. These inputs will accept a digital input (switch input), a standard Smart Temp temperature sensor or a 0-10V input. Assign the function you require to the desired input in the installer menu under the IO tab.

  • Page 27: Zone Damper Wiring

    (such as the Smart Temp SP1) with contacts rated to the voltage you will be switching. A typical drawing showing a 240V damper motors is shown right.

  • Page 28: Lora Devices

    The Smart Temp RS01/2 sensors are also supplied with a small push button on the bottom of the sensor that is used to initiate the Commercial mode after...

  • Page 29: Security Tab

    If this PIN has been changed by others or you have changed it, but you can’t remember the new PIN, you must return the SMT-850 HALO™ to Smart Temp Australia P/L or an authorised service agent to have the wall controller unlocked Security Tab...

  • Page 30: Function Lock

    If you change the PIN from the factory default setting and forget, you will need to return the SMT-850 Halo™ to Smart Temp or an authorised distributor for service and unlocking. There may be a fee for this service. The range of adjustment is 0000 to 9999 in increments of 1. The default value is 0021 Function Lock Several options are provided that can be locked.

  • Page 31: Capacity Control

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Compressor 1 to 4 Stage Span This permits you precisely control how the heat pump system will run. Where stages will turn on or off and each stage span or how hard each stage works. “Off At”...

  • Page 32: Equipment Control Functions (In Heat Cool Mode Sw 2 = Off) Tab

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Anti Cycle Timer Once a running compressor stops, this setting will define the time delay period before it is permitted to re-start. Default –4 minutes Range 0 to 10 Minutes Resolution 1 minute Comp Lead / Lag If running a multistage heat pump system, the SMT-850 Halo™...

  • Page 33: Fan Control Functions Tab

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Range of adjustment is from 0.3c to 5c Default – Cool 1 Off at 0c On at 0.5c Cool 2 Off at 0.2c On at 1,0c5c Cool 3 Cool 4 Heat 1 Off at 0c On at 0.5c Heat 2 Off at 0.2c On at 1,0c5c...
  • Page 34 SMT-850 Halo™ Manual Version 1.13 Jan 2005 Fan Reset to Auto when Off If selected, the SMT-850 HALO™ will automatically reset the fan back to “Fan Auto” mode after 15 minutes whenever the user turns the SMT-850 HALO™ mode to OFF. If unchecked the fan mode will be remembered when the SMT-850 HALO™...

  • Page 35: User Display Functions Tab

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Min Fan Voltage When controlling a DC fan, it is often unwise to run the fan too slowly for extended periods. This option permits the SMT-850 Halo™ to output a minimum voltage when the fan is to be called. This is used typically when Auto fan speed is selected by the user in the Mode Selection Window.

  • Page 36: Daily Events

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Daily Events If you have scheduling enabled, you can select the number of daily events or how many times you require the temperature to change each day. Default – 4 daily events (Residential) 2 daily events (Commercial) Range –...
  • Page 37 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Setback Cool (Commercial mode) When the SMT-850 HALO™ is used in commercial programmable mode, the building un-occupied temperatures are not available for the user to adjust to prevent the heating or cooling systems from being accidentally left running when the building is empty.

  • Page 38: Holiday Mode

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Commercial Default Cool The user is free to adjust their desired occupied cool setpoint. This option will set the daily default cooling setpoint, that is, changes made to the cooling setpoint made by the user “yesterday” will be lost and replaced with the value defined here for the start of the new day.
  • Page 39 The SMT-850 HALO™ cooling mode will be disabled if the outside air is measured to be below the temperatre set in this option. Requires an optional Smart Temp outside air sensor be fitted and defined for outside air temperature measurement.

  • Page 40: Anti-Freeze

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Upstage Delay Time This option sets the delay period between subsequent stages being called. This is to prevent multiple stages coming on in rapid succession that may impact on power peak demand load pricing that may cause excessive energy costs.
  • Page 41 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 For example, select (touch) Aux Relay 3, a function box will pop up permitting you to select the function you wish Aux relay 3 to perform. Select Temp Alarm. A second option box will then appear where you can enter the temperature alarm setpoint (and other parameters), 40c for example.
  • Page 42 App Control. This permits this output to be controlled via the Smart Temp halo App or web portal. BMS Control. This permits this output to be controlled via a Modbus or BACnet BMS system.
  • Page 43 850 HALO™ such as economy functions and advanced equipment control functions. Remote Temp Sensor. (This is a Smart Temp temperature input) Any sensor wired to this input will replace the temperature sensor fitted SMT-850 HALO™ with the temperature measured by this sensor.
  • Page 44 SMT-850 Halo™ Manual Version 1.13 Jan 2005 Occupancy. (This is a digital input) When this input is closed the user heating and cooling setpoints will be replaced by the occupancy setpoints. See the “User Display Functions” tab in the installer menu shown on page 53 of this manual.

  • Page 45: Advanced Options Tab

    SMT-850 Halo™ Manual Version 1.13 – Jan 2005 0% RH = 0v. 100%RH = 10V. Temp Output. This output will track the SMT-850 HALO™ temperature reading as displayed on the LCD. 0 C/F = 0v. 50c = 10V (100F=10v). CO2 Output. This output will track the SMT-850 HALO™ CO2 reading as displayed on the LCD id the optional CO2 sensor is fitted.

  • Page 46: Night Purge

    SMT-850 Halo™ Manual Version 1.13 Jan 2005 Economy Threshold. This setting defines how far below the current room temperature the outside temperature must be before the SMT-850 HALO™ will initiate economy cooling mode. If you use the optional wireless outside air sensor with Temp and RH sensors fitted, then this menu will automatically change to “Enthalpy Based”.
  • Page 47 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Night Purge Run Time. Defines how long you the night purge will operate in hours. Note, if the after-hours run timer is initiated or if the start schedule time is reached, night purge will be suspended in favour of conventional cooling. Default –...
  • Page 48 SMT-850 Halo™ Manual Version 1.13 Jan 2005 Wireless Devices Tab When wiring control relays, remote temperature sensors, or 0-10V analogue outputs for valves, dampers, or other Halo IO devices is difficult, a wireless alternative is available. This wireless version features a LoRa (Long Range) radio that pairs directly with the SMT-850 Halo via radio frequency signals (up to 1 km outdoors).

  • Page 49: Communications Options Tab

    PIN required to re-enter the installer menu. If you forget this PIN, you will be unable to re-enter the installer menu and may need to return the SMT-850 HALO™ to Smart Temp or an authorised distributor for unlocking.

  • Page 50: Firmware Update

    Company name, Contact Number, Email Address and company logo. (If you wish to replace the Smart Temp logo on the top left of the main user screen. Load a logo file into the root directory of the Micro SD card. The Logo must be a 140 x 60 pixel and in PNG format and select update logo) Part 3 –Communications...
  • Page 51 Your Halo is also able to interface with Inverter style air conditioning systems manufactured by companies such as Daikin ™, Fujitsu ™, Mitsubishi ™ etc using protocol adapters such as the Smart Temp SMT-UI XXX or Intesis ™. The manual supplied by Smart Temp that accompanies the protocol adapter will provide specific information on setting up the Halo for use with this adapter variant.

  • Page 52: Advanced Functions

    This is a much more accurate way of performing an economy function as it prevents the use of damp outside air (even if its cooler) for economy function. To use economy based on enthalpy you must use the Smart Temp SMT-LORA –...
  • Page 53 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Indoor Air Quality Preservation If the Economy function is fitted it can be further enhanced by adding a CO2 indoor air sensor. You are permitted to set a Hi CO2 Alarm as part of the IO options page (see page 42) and define an action to occur once the alarm threshold has been exceeded such as change a relay state and / or introduce fresh air via the Economy cooling system.
  • Page 54 SMT-850 Halo™ Manual Version 1.13 Jan 2005 This mode is ideal for training rooms where people will enter (movement is detected and the HVAC will start). People will constantly move (so at least every 10 minutes someone will move enough for the movement detector to capture movement).
  • Page 55 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 Optimised Start & Stop The SMT-850 HALO™ can control climate temperature scheduling in separate 2 ways, Normal scheduling, or Optimised scheduling, regardless of whether the SMT-850 HALO™ is setup to run the residential or commercial programs.

  • Page 56: Part 4 - Troubleshooting And Fault Finding

    Sync Halo to wi-fi – Halo will update with Internet time Automatically Zone temperatures are Wrong type of sensor Use Smart Temp sensors only. inaccurate used. Poor wiring Please make sure all wiring is landed on the conductor and the terminals are not biting the insulation.
  • Page 57 SMT-850 Halo™ Manual Version 1.13 – Jan 2005 IF all wiring to the Zone Dampers has been removed and the SMT-850 HALO™ continues to fail this test your SMT-850 HALO™ may have a faulty relay or terminal strip. Contact your supplier. If your SMT-850 HALO™...
  • Page 58 SMT-850 Halo™ Manual Version 1.13 Jan 2005 4. If testing a multistage cooling system, ensure the room set point temperature is sufficiently below the actual room temperature to “call” for high cool output or more cooling stages. (You can verify the number of stages of cooling being demanded in the SMT-850 HALO™...

  • Page 59: Manual Version History

    If adding images to the Halo screen, the recommended Image size 600 x 1024 Great care has been taken in the preparation of this manual. Smart Temp Australia P/L takes no responsibility for errors or omissions contained in this document. It is the responsibility of the user to ensure this thermostat, or the equipment connected to it is operating to their respective specifications and in a safe manner.

Table of Contents