Select when the fourth stage heating turns on . Turn on point is the Heat To setting minus the differential . This setting is available when a heat pump is selected and there are 4 heating stages .

Select the maximum floor temperature . This protects the floor covering from over heating . Applies when there is a floor sensor .

Select the time delay when the third stage heating turns on . The time delay starts counting after the second stage heat- ing is turned on . This setting is available when a heat pump is selected and there are at least 3 heating stages .

Cold Weather Shut Down (CWSD) The cooling system can automatically shut off based upon the outdoor temperature and CWSD setting. This prevents unwanted cooling during the winter.

Select if the internal room temperature sensor is on or off . Only available when Sensor 1, 2 or 3 is set to read a room or floor sensor .

Sends an email notification if the auxiliary heat W1 or W2 runs continuously for longer than this setting . This setting only applies for heat pump systems .

Heating Differentials Each heating stage has an adjustable differential and time delay setting to determine when the stage turns on. The heating stages Heat 4 to Heat 1 shut off are when they reach 1.5, 1.0, 0.5, and 0.0°F (0.75, 0.5, 0.25, and 0.0°C) of the Heat To setting respectively.

Warm Weather Shut Down (WWSD) The heating system can automatically shut off based upon the outdoor temperature and the WWSD setting. This provides a convenient way to shut off the heating system.

Relative Humidity Sensor The thermostat includes an internal relative humidity (RH) sensor and has the option to connect to an external RH sensor. The installer has the option to disable the internal RH sensor when an external RH sensor is installed. When both the internal and external RH sensors are enabled, the RH reading is averaged.

Heat Pump Systems A heat pump system may include additional heat sources as backup. The thermostat supports up to four heating stages, two cooling stages, a reversing valve, a fan and one accessory relay.

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Limited Warranty The liability of tekmar under this warranty is limited. The Purchaser, by taking receipt of any tekmar product (“Product”), acknowledges the terms of the Limited Warranty in effect at the time of such Product sale and acknowledges that it has read and understands same. The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s pass-through warranty which the Purchaser is authorized to pass through to its customers. Under the Limited Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The pass-through warranty period is for a period of twenty-four (24) months from the production date if the Product is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four (24) months from the production date. The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts and labor provided by tekmar to repair defects in materials and / or workmanship of the defective product; or to the exchange of the defective product for a warranty replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect, special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials, including any liability for fundamental breach of contract. The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to Purchaser’s agreement and warranty with its customers. Any representations or warranties about the Products made by Purchaser to its customers which are different from or in excess of the tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold tekmar harmless from and against any and all claims, liabilities and damages of any kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its customers. The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications, alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the Product was not installed in compliance with tekmar’s instructions and / or the local codes and ordinances; or if due to defective installation of the Product; or if the Product was not used in compliance with tekmar’s instructions. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND ITS COMPLIANCE WITH OR NON-VIOLATION OF ANY APPLICABLE ENVIRONMENTAL, HEALTH OR SAFETY LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW. Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tekmar Representative assigned to the territory in which such Product is located. If tekmar receives an inquiry from someone other than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers, regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact information regarding the appropriate Representative.

1-Stage Heat and 1-Stage Cooling with Fan Up to 2-Stage Furnace and 2-Stage Air ConditionerUp to 2-Stage Hydronic Boiler and 2-Stage Air ConditionerUp to 2-Stage Heat Pump with Auxiliary HeatUp to 2-Stage Heat Pump with 2-Stage Dual Fuel

Choose the highest number of panes installed and best quality as a starting point . If window condensation appears, lower

The HVAC Interface Module includes three relay power jumper connectors. These are used to provide power between terminals when necessary.

Cooling Differentials The first and second stage cooling have adjustable differentials and time delay setting to determine when the stage turns on, and shut off when the room temperature reaches 0.5 and 0.0°F (0.25 and 0.0°C) above the Cool To setting respectively.

Select the time delay when the fourth stage heating turns on . The time delay starts counting after the third stage heating is turned on . This setting is available when a heat pump is selected and there are at least 4 heating stages .

If you are unable to connect to the WiFi network, try creating a WiFi Hotspot on your mobile device to bypass the router. Apple* iOS WiFi hotspot instructions https://support.apple.com/en-us/HT204023 Android** WiFi hotspot instructions https://support.google.com/android/answer/9059108 If the thermostat displays IoT connected when using the WiFi Hotspot, please contact your Internet Service Provider (ISP) or IT professional for assistance with the router.

Select the time delay when the second stage cooling turns on . The delay time starts counting after the first stage cooling is turned on . This setting is available when there are two cooling stages .

Select the minimum time the cooling compressor must be off before turning back on . This helps prevent compressor failure .

Conventional Systems A conventional heating system includes: furnaces, air conditioners, hydronic heating systems with baseboards, radiant floors, or fan coils and electric heating. The thermostat supports up to two heating stages, two cooling stages, a fan and two accessory relays.

Select if the relative humidity setpoint should automatically adjust with outdoor temperature to prevent frost on windows .

Heat Pump Balance Point An air source heat pump’s Coefficient of Performance (COP) declines with falling outdoor air temperature. The Balance Point is the outdoor temperature at which it is more economical to shut off the heat pump (relays Y1 and Y2) and operate the backup heating equipment (relays W1 and W2).

Select when the second stage cooling turns on . Turn on point is the Cool To setting plus the differential . This setting is available when there are two cooling stages .

The thermostat can measure floor temperature between -46 to 212°F (-43 to 100°C). If a floor sensor is connected, floor minimum and maximum settings are available. The floor heating setpoint is adjustable from 40 to 95°F (4.5 to 35°C). For a combination of air and floor temperature control, leave the internal air sensor on in the setup menu. A floor minimum can be used to prevent a fast drop in temperature caused by receding solar exposure. This operation is recommended for areas heated by afternoon sun through large windows. When the sun sets, it can take a long time for the floors to get warm again. This may cause the room to cool off too much in the early evening. A floor minimum setting can help with this condition by maintaining a floor minimum temperature. Keep in mind the floor minimum temperature will override the air temperature, and if set too high, may overheat the room. A floor maximum is recommended for rooms with hardwood floors. Setting floor minimum and maximum temperatures is a way of enhancing the comfort of the living space while protecting

Select if the internal humidity sensor is on or off . Only available when Sensor 3 is set to read an external humidity sensor .

When operating in Mode Auto, select the amount of time to wait between switching from heating to cooling and vice versa .

FloodSafe® Water Detector Shutoff The Watts FloodSafe Water Detector Shutoff LFWDS prevents catastrophic water damage in the event of a water heater leak. The thermostat provides an email notification in the event that the FloodSafe Water Detector Shutoff LFWDS detects a water and shuts off the supply line to the water heater

Dehumidifier Operation The thermostat controls the relative humidity (RH) by operating either the Accessory 1 or Accessory 2 relay. This is an installer configurable setting. When the RH is above the Dehumidify To setting by 3%, the Accessory 1 or 2 relay is closed to operate the dehumidifier. The dehumidifier is shut off when the RH reaches the Dehumidify To setting.

Select dual fuel on if the heat pump has 100% backup using a furnace or hydronic fan coil . The setting is available for heat pump systems with auxiliary heat .

Select when the second stage heating turns on . Turn on point is the Heat To setting minus the differential . This setting is available when there are at least 2 heating stages .

Radiant Floor Heating Radiant floor heating is operated differently than other heating types due to the large time delays to heat and cool the slab. When Radiant Floor Heating is selected in the setup menu, the W1 relay operates using Pulse Width Modulation. This improves comfort for radiant systems with high mass floors.

Heat Pump Loop Valve Operation The thermostat supports water-to-air heat pump systems that absorb or reject heat to a hydronic building loop. Whenever the heat pump compressor Y1 or Y2 relay is turned on, the Accessory 1 relay closes to open a hydronic zone valve. This allows variable speed pumps on the hydronic loop to operate at lower speeds when the heat pump is off, thereby saving electrical energy.

Humidifier Operation The thermostat controls the relative humidity (RH) by operating either the Accessory 1 or Accessory 2 relays. This is an installer configurable setting. When the RH is below the Humidify To setting by 3%, the Accessory 1 or 2 relay is closed to operate a humidifier. The humidifier is shut off when the RH reaches the Humidify To setting.

Select when the third stage heating turns on . Turn on point is the Heat To setting minus the differential . This setting is available when a heat pump is selected and there are at least 3 heating stages .

The Heat Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV) operates to improve indoor air quality and recovers heat from exhaust air.

Select which relays require fan operation . Combinations with W1 are not available when Radiant Floor Heating is set to yes .

Select the type of equipment that the accessory relay 2 operates . This setting is only available for conventional heating systems .

Humidifier Window Protection During cold weather, condensation will form on windows when the relative humidity (RH) is too high. The optional window protection feature automatically calculates the indoor dew point based upon the outdoor temperature and the quality of the windows installed. The humidifier is then operated to the highest possible RH that is below the Humidify To setting. This feature requires a wired connection to an Outdoor Sensor 070.

Power Off and On power the thermostat off. Next, power the router off, wait 10 seconds, then power on and wait for the Internet status to be on. Then power the thermostat on.

Select O for heat pumps designed for normally heating operation . Select B for heat pumps designed for normally cooling operation . This setting is only available for heat pump systems .

Select the time delay when the second stage heating turns on . The time delay starts counting after the first stage heating is turned on . This setting is available when there are at least 2 heating stages .

When radiant floor heating is installed, it is always the first stage of heating, followed by the heat pump, and lastly any backup heating. This allows the floor to remain warm in the heating season

Room Sensor and Averaging The thermostat can measure room temperature between -46 to 212°F (-43 to 100°C). The room temperature can be measured using a combination of the built-in and auxiliary sensors.

the setting until condensation stops forming . This setting is available when Accessory 1 or 2 is set to Humidifier and a wired outdoor sensor is installed .

HRV / ERV Ventilator Operation Ventilation with fresh outdoor air is important for maintaining indoor air quality. The thermostat can operate a heat recovery ventilator (HRV) or energy recovery ventilator (ERV) on a timer by closing the Accessory 1 relay to operate the ventilator fan at low speed.

Dual Fuel Dual fuel systems include a heat pump together with a backup heat source such as a furnace or a hydronic fan coil. When Dual Fuel is set to on, the heat pump (relays Y1 and Y2) is shut off whenever the backup heating equipment (relays W1 and W2) is operating.