The Smart Temp SMT-710 is a manual thermostat with zone control capabilities. It allows you to control the temperature in two independent zones, Zone 1 and Zone 2. The thermostat can be set to different modes, including Off, On, Auto, Heat, and Cool. It
features a fan control function that allows you to adjust the fan speed and mode. The SMT-710 also has a temperature control limit and can display the current room temperature and set temperature for each mode.
Thank you for the purchase of the Smart Temp SMT-710 Zone Control Thermostat.
Please take the time to read and understand this manual so that you may take advantage of the many features this thermostat may offer
Turning your Thermostat On and OFF.
The lower left corner of the display controls the mode selection, depending on how your installer has set your SMT-710 up you will be given the option of selecting On and Off with a single set point (with a preset differential between the heating and cooling) or selecting individual heating and cooling modes, each with individual heating and cooling set points.
If the text Heat or Cool is flashing then your SMT-710 is requesting that function from your air conditioning system.
If set for Heat and Cool mode, a maximum heating and cooling set point limit may be imposed. Text and a chirp will be given when this limit is reached.
The SMT-710 can control a single or multi-speed fan system. This capability will be set up by your installer to match the capability of the Air Conditioning system that it is controlling.
Note, If at any time you wish to see the Zone 2 temperature, press and hold the Zone 2 button for 2 seconds and the display will go blank except for the Zone 2 button and the room temperature as measured in Zone 2. The display will return to normal after 4 seconds.
Wiring the wall controller to the unit control card requires 4 wires, 24V Active, 24V common Data A and Data B. The wall controller and the unit control card are labelled identically, being R C A B. 4 wires need to be used of 0.2mm diameter – ideally screened but not essential for short runs. An external 24VAC power supply should be used and connected to either the wall controller or Unit Control Card (12V DC can also be used, +12 to R and -12 to C).
The SZ-PS power supply is suitable.
(Sw 1, 2,3 &5 on by Default)
Switch | Function | Off | On |
1 | Fan Speeds | Single Speed | 3 Speed |
2 | Equipment Type | Heat Cool | Heat Pump |
3 | HP/HC Mode | Gas Heat / O | Electric Heat / B |
4 | Not Used | ||
5 | Comp Delay | Off | On – 5 Min |
6 | Not Used | ||
7 | Ventilation Mode | Off | On |
8 | Zone Enable | Off | On |
Note. The switch 3 function is based on the position of switch 2.
Typical 2-Stage Heat Pump – 3 Fan Speeds
Typical 2 Heat 1 Cool 1 Fan Speed
Typical Heat / Cool Valve Wiring
Installer Options Menu The SMT-710 has a comprehensive list of options that can be adjusted by the installer to better tune the performance of the SMT-710 to the needs of the client. To Enter the Installer Menu, with the mode OFF, Press and Hold the center of the LCD. After some seconds it will show the digit “15″ Use the up (or down) button to adjust this to “21″ or the new PIN if changed from default. Navigate forward or backward through the installer menu with the lower left and right buttons, and adjust the current value with the up/down button. To exit the installer menu press and hold the lower right button for 3 seconds. (Do not remove power for 30 seconds to save changes.) | |||
Option 23 0-10V Fan Interval PI 10 – 300 Seconds (60 Seconds default) | |||
Option 24 0-10V Fan Direction 0 – 0-10V (valve opens as more heat required – Forward Acting) (Default) 1 – 10-0V (valve closes as more heat required – Reverse Acting) | |||
Option 25 0-10V Fan Minimum Voltage 0-10v 0.1 steps (Default 0v) | |||
Option 26 0-10V Fan Maximum Voltage 0-10v 0.1 steps (Default 10v) | |||
Option 27 Auto Off Timer 0 – Auto Off Timer disabled (Default) 1 to 10 hours. | |||
Option 28 Un=Occupied Heat Setpoint 0 – Off (Default 15) 5-35C | |||
Option 0 Installer entry PIN 0-99 (Default 21) | |||
Option 1 Buttons shown 0 – Both Mode and Fan button shown (Default) 1 – Show mode but hide fan 2 – Show fan but hide mode* 3 – Both mode and fan buttons are hidden. | Option 29 Un=Occupied Cool Setpoint 0 – Off (Default 27) 5-35C | ||
Option 30 Un=Occupied Fan Speed / Mode (1 or 3 speed) 1 – Low (Auto) (Default) 1 – Auto 1-speed fan (Default) 2 – Medium (Auto) 3 – High(Auto) | |||
Option 2 Permitted User Modes 0 – Off / Auto | |||
Option 31 Backlight 0 – On with button press (Default) 1 – Always high | |||
Option 3 Room / Set Display 0 – Showroom and set temp (Default) 1 – Show set temp only | |||
Option 32 TT Terminal Functions 0 – Remote sensor (replaces onboard sensor) (Default) 1 – Average remote sensor with onboard sensor | |||
Option 4 Display Format 0 – Deg C (Default) 1 – Deg F | |||
Option 5 C/F button shown on the LCD 0 – Off (Default) 1 – Show swap C/F button on LCD | |||
Option 33 Assignable Input Function 0 – Remote sensor (replaces onboard sensor) (Default) 1 – Average remote sensor with onboard sensor | |||
Option 6 Heat Temp High Set Limit 5 to 50 C (Default 35) | |||
Option 7 Cool Temp Low Set Limit 5 to 50 C (Default 15) | |||
Option 8 Dead Band 0 to 5.0C (Default 0.5c) | |||
Option 34 Temperature Sensors Sensor speed of response 0 – Very fast 1 – Fast 3 – Slow (Default) 4 – Very Slow | |||
Option 9 Heat Relay Span 0.5 to 10.0c (Default 1.0c) | |||
Option 10 Cool Relay Span 0.5 to 10.0c (Default 1.0c) | |||
Option 11 Fan Relay Span 0.5 to 10.0c (Default 1.0c) | |||
Option 35 TT Temperature Calibration +/- 10c (Default 0.0c) | |||
Option 12 Fan Purge 0 – Off (Default) | |||
Option 36 Wall Controller Temperature Calibration +/- 10c (Default 0.0c) | |||
Option 37 Zone 2 Temperature Calibration +/- 10c (Default 0.0c) | |||
Option 38 Zone Management (see Zone Logic – next page) 0 – NO default zone. Both zones can be closed 1 – Zone 1 default. (zone 1 will auto-turn on to keep a zone open) 2 – Zone 2 default (zone 2 will auto turn on to keep a zone open) 3 – No default – just can’t turn off last zone (Default) | |||
Option 39 Fault Input action 0 – Only display Fault on LCD – no action required 1 – Shut down HVAC – No display on LCD 2 – Shut down HVAC and display on LCD (Default) 3 – Shut down HVAC after 15 seconds – no display on LCD 4 – Shut down HVAC after 15 seconds – display on LCD | |||
Option 13 Aux Relay Function 0 – Close on fault (Default) 1 – Y2 (in HP or HC mode) 2 – W2 (In Heat cool mode) 3 – Spill – Opens when all zones are closed (when option 38 = 0) | |||
Option 40 Modbus Mode 0 – SP7 communication (Inc temperzone & BMS )(Default) 1 -Intesis Module 2 – SMT-UI | |||
Option 14 0-10V Heat Relay Span 0.5 to 10.0c (Default 1.0c) | |||
Option 41 Modbus Address (only if Option 40 = 0) 1 – 255 (Default 7) | |||
Option 15 0-10V Heat Interval PI 10 – 300 Seconds (60 Seconds default) | |||
Option 42 Modbus Baud (only if Option 40 = 0) 0 – 4800 1 – 9600 2 – 19200 (Default ) | |||
Option 16 0-10V Heat Direction 0 – 0-10V (valve opens as more heat required – Forward Acting) (Default) 1 – 10-0V (valve closes as more heat required – Reverse Acting) | |||
Option 17 0-10V Heat Minimum Voltage 0-10v 0.1 steps (Default 0v) | Option 43 Modbus Parity (only if Option 40 = 0) 0 – None | ||
Option 18 0-10V Cool Relay Span 0.5 to 10.0c (Default 1.0c) | |||
Option 44 Dec x 10 for Intensis or SMT-UI-DK Module 0 – Disable | |||
Option 19 0-10V Cool Interval PI 10 – 300 Seconds (60 Seconds default) | |||
Option 20 0-10V Cool Direction 0 – 0-10V (valve opens as more heat required – Forward Acting) (Default) 1 – 10-0V (valve closes as more heat required – Reverse Acting) | |||
R Factory reset Set to value to 1 (one) and exit to initiate | |||
Option 21 0-10V Cool Minimum Voltage 0-10v 0.1 steps (Default 0v) | |||
Specifications subject to change without notice | |||
Option 22 0-10Fan Span 0.5 to 10.0c (Default 3.0c) | |||
Option 1 – Zone 2 sensor is NOT installed
Zone 1 and zone 2 is assumed to be the same temperature and the heating and cooling is controlled based on the set temperature and the temperature measured by the wall controller ( Zone 1 temperature). The zone selection switches simply open and close the various zone dampers. This sends conditioned air to whatever zone (s) are selected.
Option 2 – Zone 2 sensor is installed
Zone 1 and Zone 2 temperatures are individually measured by the SMT-710 and the Zone temperatures will be individually maintained to the temperature as set on the wall controller.
The Zone 1 and 2 damper(s) will automatically open or close and the Air Conditioning will be controlled to ensure both zone temperatures are maintained.
Zone Limit Control
The SMT-710 can be set to ensure that at least one zone is open at all times or permit both zones to be closed if a common zone is available for example. Zone control management has several options as shown in the installer option menu, option 38.
Temperature Display
The SMT-710 will, by default display Zone 1 temperature. If you have the zone 2 temperature sensor fitted and only zone 2 selected, then the wall controller will display the zone 2 temperature.
If at any time you wish to see the zone 2 temperature press and hold the zone 2 select button for 2 seconds and the Zone 2 temperature will be displayed for 4 seconds. If the zone 2 sensor is not fitted the SMT-710 wall controller will display Dash Dash.
The SMT-710 has a universal input that can be assigned one of several functions. See Installer option 33 over.
This input will accept a VOLT FREE dry contact input a standard Smart Temp 10K NTC thermistor input. There are several options available to the assignable Input as detailed in the installer menu option number 33.
The SMT-710 Wall Controller has a remote Aux input with options defined in the Installer menu option 32. This input will accept a VOLT FREE dry contact or a standard Smart Temp 10K NTC sensor
The SMT-710 UCC (Unit Control Card) has several LEDS that show Power is available (blinking when receiving data), whether the card is calling for heating, cooling, or fan, and what Zone is open. These indicator LEDS should be the first thing considered when diagnosing any faults.
All rights reserved – Specifications subject to change without notice
Download Manual
SMART TEMP SMT-710 Zone Control Thermostat User Manual
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