tekmar IOM-T-564 Invita WiFi Thermostat Installational Manual

If more than 2 wires are present, identify the R & C wires for use when connecting the Invita WiFi Thermostat.
Additional wires should be secured in a way that prevents them from touching the circuit board or terminals on the Invita after the R & C wires are connected.

Mount Invita base to wall

- Remove the back plate from the thermostat
- Secure the Invita thermostat back plate to a 2 x 4″ electrical box with machine screws or to drywall using wood screws with wall anchors

If the wall has damage extending beyond the width of the Invita WiFi Thermostat, place the wall plate trim behind the back plate.

Wiring the Invita WiFi Thermostat

Connect the 2 wires from the old thermostat to the terminals on the back of the Invita WiFi Thermostat. This connection is not polarity sensitive.

Attach the thermostat to back plate

Align the 2 notches at the top of the base plate with the holes on the top of the thermostat then rotate on the hinge point down to close

Mounting the HVAC Interface Module

Locate the HVAC Interface Module so that it can connect to the other end of the existing wire from the thermostat.
After removing the cover, secure the HVAC Interface Module to the wall, the HVAC equipment chassis or HVAC plenum
using the holes at the top and bottom of the module.
Wiring to the module enters from opening on the sides or the back. Refer to the diagrams on pages 6 to 11 for wiring details

Replace the Cover

Push the HVAC Interface Module Cover towards the base. Top and bottom clips hold the cover in place.

Compatible With

Conventional systems:
- 2-stage heating, 2-stage cooling, fan and 2 accessories
Heat pump systems:
- 4-stage heating, 2-stage cooling, fan,reversing valve and 1 accessory
- Supports dual fuel systems
Accessory options:
- Humidifier, dehumidifier, HRV/ERV ventilator, heat pump loop valve

Important Safety Information

it is your responsibility to ensure that this thermostat is safely installed according to all applicable codes and standards. tekmar® is not responsible for damages resulting from improper installation and/ or maintenance.
This is a safety-alert symbol. The safety alert symbol is shown alone or used with a signal word (DANGER, WARNING, or CAUTION), a pictorial and/or a safety message to identify hazards.
When you see this symbol alone or with a signal word on your equipment or in this manual, be alert to the potential for death or serious personal injury.
This pictorial alerts you to electricity, electrocution, and shock hazards.

Equipment Connections

Conventional systems:
- up to 2-stage heating, 2-stage cooling, fan and 2 accessories
Heat pump & dual fuel systems:
- Up to 4-stage heating, 2-stage cooling, fan, reversing valve and 1 accessory
Accessory options:
- Humidifier, dehumidifier, HRV/ERV ventilator

Wiring the HVAC Interface Module

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

Set Jumper J1 to On to connect power R to the Rc terminal.
set Jumper J2 to On to connect power R to the Rh2 wiring terminal.
Set Jumper J3 to On connects power R to the Rh1 wiring terminal.
Set the jumper to off to disconnect the power from Rh1, Rh2, or Rc respectively.

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

Dehumidification using a DX Coil

Humidifier

HRV/ERV Ventilator

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

Essential Settings:
- Accessory Relay 1 = Ventilation

Outdoor Sensor

Installing an outdoor sensor provides more accurate outdoor temperature readings compared to using the weather information from the Internet which may cause delays in updating weather.
Outdoor temperature is displayed on home screen.
Used to enable heat pump dual fuel switchover, warm weather shut down, and cold weather shut down.

Room Sensor

When the location of the thermostat is not ideal for accurate temperature and humidity measurement, an optional room sensor can be installed in a better location. The 086 mounts flush to a wall, blending in with the room decor.
Remotely measure the temperature and relative humidity
The Invita WiFi Thermostat provides the option to disable the internal temperature and relative humidity sensor, and use the external sensor instead.

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

Startup

Restore power to the connected equipment. Once energized, the Invita WiFi Thermostat will display the home screen

Home Screen

Symbols

User Settings

Away

Schedule

Display

Setting

Range

Default

TEMPERATURE UNITS

Select °F or °C .

°F or °C

°F

ENERGY USE

View the number of hours the heating or cooling has operated either daily or monthly .

0 to 24 (daily)

0 to 744 (monthly)

0 hours

Setting	Range	Default
BRIGHTNESS ACTIVE Select the brightness when touching the screen .	30 to 100%	100%
BRIGHTNESS INACTIVE Select the brightness when not in use .	Off, 30 to 100%	50%
BACKGROUND Select the background color .	Light, Blue, Night, Latte, Espresso	Blue
LANGUAGE Select the language .	English, Español, Français	English
SCREEN CLEAN Locks screen for 10 seconds to allow cleaning .	N/A	N/A
INACTIVE TIME DISPLAY Select if the time is visible when the display is inactive .	Off or On	On
INACTIVE HUMIDITY DISPLAY Select if the humidity is visible when the display is inactive .	Off or On	Off
INACTIVE OUTDOOR DISPLAY Select if the outdoor temperature is visible when the display is inactive .	Off or On	Off

Time

The time and date can be manually set by highlighting a field and then using the or buttons .
Choose from the time options listed below .

Setting	Range	Default
TIME FORMAT Select the time format .	12 or 24 hour	12 hour
TIME SOURCE If Internet is available, the time source can be either automatically or manually set .	Automatic, Manual	Auto
TIME ZONE Select the local time zone .	Hawaii, Alaska, Pacific, Mountain, Central, Eastern, Atlantic, Newfoundland	Eastern
DAYLIGHT SAVING TIME Select the brightness when not in use .	Off, On	On

Fan

WiFi

The thermostat includes a step by step tutorial to setup the WiFi connection.

WiFi and Connectivity Troubleshooting

WiFi Connection Status
Press > WiFi > WiFi:On > i to view the thermostat connection status

WiFi Signal Strength

The WiFi signal must measure between 0 and -69 dB to have a reliable connection to the Watts cloud.
A WiFi extender is recommended to be installed if the WiFi signal is between -70 to -100 dB.

Internet Connected

The WiFi information screen will show Internet
Connected when the thermostat is connected to the router and there is a connection to the Internet.

IoT Connected

The thermostat connection status will show
IoT Connected when connected to the Watts
Cloud and the thermostat is ready to be registered to the app.
If IoT is not connected, please follow these steps:

Check Password

Double-check that you are using the correct WiFi network and password.
The password is limited to 32 characters and can include upper and lower case letters, numbers, special characters and spaces. A space counts as a character.
The thermostat supports WPA2-Personal password security.

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.

Check Router & Firewall

Consult the router manual or Internet Service Provider (ISP) for assistance with router setup with these configurations:
The router must provide a 2.4 GHz signal.
The thermostat is not compatible with 5 GHz networks.
The router is using WPA2-Personal security.
The router has DHCP enabled with enough available addresses for all Internet devices.
The router firewall is not blocking the outbound UDP or TCP ports: 53, 123, 443, 8883.
The router firewall is not blocking connections to *.azure-devices.net
The router firewall is not blocking the thermostat based on a MAC filter list.

Network Troubleshooting

tekmar provides free access to a network troubleshooting tool called RouteThis Helps.
Download the app from the App Store or
Google Play Store to your mobile device.
enter code “TEKM” and click “Network scan”.
The app will provide further instructions.

Create a WiFi Hotspot

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.

Installer Settings

Setup

The Setup menu contains seven sub-menus that determine how the thermostat operates

Setup – Toolbox

Setting	Range	Default
ERROR Displays any error messages.	N/A	N/A
ACCESS LEVEL Select between user and installer access levels. User access level restricts access in the Setup Menu.	User, Installer	Installer
STATUS The current status of warm weather shut down, cold weather shut down and each of the relays .	Early Start, WWSD, CWSD, W1, W2, Y1, Y2, G, Acc1, Acc2	N/A
SOFTWARE VERSION Display the software version .	N/A	N/A
LOAD DEFAULTS All settings are returned to factory defaults .	Yes, No	No
CALIBRATE TOUCHSCREEN Recalibrate the screen after loading factory defaults .	N/A	N/A

Setup – Temp

Setting	Range	Default
Screen Page 1
FLOOR MIN – WAKE Select the floor temperature while in the wake schedule . Applies when there is both a floor and an air sensor .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
FLOOR MIN – LEAVE Select the floor temperature while in the leave schedule . Applies when there is both a floor and an air sensor .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
FLOOR MIN – RETURN Select the floor temperature while in the return schedule . Applies when there is both a floor and an air sensor .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
FLOOR MIN – SLEEP Select the floor temperature while in the sleep schedule . Applies when there is both a floor and an air sensor .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
FLOOR MIN – AWAY Select the floor temperature while in away . Applies when there is both a floor and an air sensor .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
FLOOR MAX Select the maximum floor temperature . This protects the floor covering from over heating . Applies when there is a floor sensor .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
Screen Page 2
HEAT TO AWAY Select the heating temperature when away .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	62°F 16 .5°C
HEAT TO MIN LIMIT Select the minimum heating temperature limit .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
HEAT TO MAX LIMIT Select the maximum heating temperature limit .	Off, 40 to 95°F Off, 4 .5 to 35 .0°C	Off
COOL TO AWAY Select the cooling temperature when away .	Off, 45 to 100°F Off, 7 .0 to 38 .0°C	Off
COOL TO MIN LIMIT Select the minimum cooling temperature limit .	Off, 45 to 100°F Off, 7 .0 to 38 .0°C	Off
COOL TO MAX LIMIT Select the maximum cooling temperature limit .	Off, 45 to 100°F Off, 7 .0 to 38 .0°C	Off
Screen Page 3
WARM WEATHER SHUT DOWN Select the outdoor temperature at which the heating is shut off .	Off, 40 to 100°F Off, 4 .5 to 38 .0°C	Off
COLD WEATHER SHUT DOWN Select the outdoor temperature at which the cooling is shut off .	Off, 40 to 100°F Off, 4 .5 to 38 .0°C	Off
HEAT PUMP BALANCE POINT Select the outdoor temperature at which the heat pump is shut off and the backup heat source is operated exclusively .	Off, 10 to 70°F Off, -12 .0 to 21 .0°C	Off

Setup – Sensors

Setting	Range	Default
SENSOR 1 Select the type of sensor connected to S1 and Com wiring terminals .	Off, Room, Floor	Off
SENSOR 2 Select the type of sensor connected to S2 and Com wiring terminals .	Off, Room, Floor, Outdoor	Off
SENSOR 3 Select the type of sensor connected to S3 and Com wiring terminals .	Off, Room, Floor, Humidity	Off
INTERNAL ROOM SENSOR 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 .	Off, On	On
INTERNAL HUMIDITY SENSOR Select if the internal humidity sensor is on or off . Only available when Sensor 3 is set to read an external humidity sensor .	Off, On	On
ROOM OFFSET Manual offset correction of the room temperature measurement .	Off, -5 to +5°F -3 .0 to 3 .0°C	Off
FLOOR OFFSET Manual offset correction of the floor temperature measurement .	Off, -5 to +5°F -3 .0 to 3 .0°C	Off
HUMIDITY OFFSET Manual offset correction of the relative humidity measurement .	Off, -10% to +10%	Off

Setup – Alerts

Setting	Range	Default
ROOM HOT WARNING Sends an email notification if the room exceeds this temperature .	Off, 40 to 100°F Off, 4 .5 to 38 .0°C	Off
ROOM COLD WARNING Sends an email notification if the room falls below this temperature .	Off, 40 to 100°F Off, 4 .5 to 38 .0°C	Off
LOW HUMIDITY WARNING Sends an email notification if the humidity falls below this setting .	Off, 5 to 95%	Off
HIGH HUMIDITY WARNING Sends an email notification if the humidity rises above this setting .	Off, 5 to 95%	Off
AUXILIARY HEAT RUN TIME WARNING 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 .	Off, 1 to 24 hours	Off
AIR FILTER CHANGE WARNING Sends an email notification to change the air filter when the fan exceeds this run time .	Off, 200 to 2000 hours	Off
UV LAMP CHANGE WARNING Sends an email notification to change the UV disinfectant lamp when it exceeds this run time .	Off, 10,000 to 50,000 hours	Off

Setup – Relays (1 of 3)

Setting

Range

Default

HEATING TYPE

Select between conventional heating or heat pump .

Conventional, Heat Pump

Conventional

EQUIPMENT

Select the number of stages of the heating and cooling equipment .

Conventional

1 Heat/1 Cool,

1 Heat/2 Cool,

2 Heat/1 Cool,

2 Heat/2 Cool,

1 Heat/

1 Cool

Heat Pump

1 HP,

1 HP/1 Aux,

1 HP/2 Aux,

2 HP,

2 HP/1 Aux,

2 HP/2 Aux

1 HP/1 Aux

RADIANT FLOOR HEATING

Select if the first stage W1 heats a radiant floor .

Yes or No

HEAT 1 DIFFERENTIAL

Select when the first stage heating turns on . Turn on point is the Heat To setting minus the differential .

0 .9 to 2 .0°F

0 .5 to 1 .05°C

1 .4°F

0 .75°C

HEAT 2 DIFFERENTIAL

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 .

1 .0 to 10 .0°F

0 .6 to 5 .6°C

2 .0°F

1 .2°C

HEAT 2 DELAY

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 .

0 to 180 minutes

1 minute

HEAT 3 DIFFERENTIAL

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 .

1 .0 to 10 .0°F

0 .6 to 5 .6°C

2 .5°F

1 .4°C

HEAT 3 DELAY

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 .

0 to 180 minutes

1 minute

HEAT 4 DIFFERENTIAL

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 .

1 .0 to 10 .0°F

0 .6 to 5 .6°C

3 .0°F

1 .8°C

Setup – Relays (2 of 3)

Setting	Range	Default
HEAT 4 DELAY 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 .	0 to 180 minutes	1 minute
COOL 1 DIFFERENTIAL Select when the first stage cooling turns on . Turn on point is the Cool To setting plus the differential .	0 .9 to 2 .0°F 0 .5 to 1 .05°C	1 .4°F 0 .75°C
COOL 2 DIFFERENTIAL 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 .	1 .0 to 10 .0°F 0 .6 to 5 .6°C	2 .0°F 1 .2°C
COOL 2 DELAY 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 .	0 to 180 minutes	1 minute
Y MIN RUN TIME Select the minimum time the cooling compressor must run before shutting off . This helps prevent compressor failure .	0:30 to 10:00 minutes	2:00 minutes
Y MIN OFF TIME Select the minimum time the cooling compressor must be off before turning back on . This helps prevent compressor failure .	0:30 to 10:00 minutes	5:00 minutes
DUAL FUEL 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 .	Off or On	Off
ACCESSORY RELAY 1 Select the type of equipment that the accessory relay 1 operates .	Off, Humidifier, Dehumidifier, Ventilation, HP Loop Valve	Off
ACCESSORY RELAY 2 Select the type of equipment that the accessory relay 2 operates . This setting is only available for conventional heating systems .	Off, Humidifier, Dehumidifier	Off

Setup – Relays (3 of 3)

Setting	Range	Default
HEAT PUMP REVERSING VALVE 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 .	O (Orange), B (Blue)	O
FAN RELAY Select which relays require fan operation . Combinations with W1 are not available when Radiant Floor Heating is set to yes .	G only, With Y With Y and W1, With Y and W2, With Y, W1 and W2	G only
FAN WITH HRV/ERV Select if the HVAC system fan should turn on together with the HRV or ERV ventilation fan .	Off or On	Off
HUMIDIFIER TYPE Select the type of humidifier . This setting is available when Accessory 1 or 2 is set to Humidifier .	Evaporative, Steam, Stand Alone	Steam
WINDOW PROTECTION Select if the relative humidity setpoint should automatically adjust with outdoor temperature to prevent frost on windows . This setting is available when Accessory 1 or 2 is set to Humidifier and a wired outdoor sensor is installed .	Off or On	Off
WINDOW QUALITY The window quality determines the amount that the relative humidity setting is lowed during cold outdoor weather . Choose the highest number of panes installed and best quality as a starting point . If window condensation appears, lower 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 .	1 Pane 2 Pane 3 Pane Poor Average Better	2 Pane Average
DEHUMIDIFIER TYPE Select the type of dehumidifier . This setting is available when Accessory 1 or 2 is set to Dehumidifier .	DX Coil, Stand Alone	DX Coil
HEAT-COOL TIME INTERLOCK When operating in Mode Auto, select the amount of time to wait between switching from heating to cooling and vice versa .	10 to 180 minutes	10 minutes

Setup – Humidity

Set the lowest relative humidity level.
Range is 10 to 80%
Default is 40%
Available when Accessory 1 or 2 operates a humidifier
Set the highest relative humidity level.
Range is 20 to 90%
Default is 60%
Available when Accessory 1 or 2 operates a dehumidifier.

Setup – HRV / ERV Ventilation

Sequence of Operation

Heating and Cooling Operation

The heating setpoint can be set from 40 to 95°F (4.5 to 35°C).
The Heat On symbol is shown on the display when the thermostat is heating.
The cooling setpoint can be set from 45 to 100°F (7.0 to 38.0°C).
Heating for freeze protection is provided whenever the air or floor temperature falls below 40°F (4.5°C), regardless of operating mode.
The Cool On symbol is shown on the display when the thermostat is cooling.
The thermostat supports two heating system types: 1) conventional, or 2) heat pump.

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.

EQUIPMENT SETTING	1H/1C	1H/2C	2H/1C	2H/2C
First stage heating	W1	W1	W1	W1
Second stage heating	–	–	W2	W2
First stage cooling	Y1	Y1	Y1	Y1
Second stage cooling	–	Y2	–	Y2
Fan	G
Accessory 1	Choice of: Humidifier, Dehumidifier, HRV/ERV
Accessory 2	Choice of: Humidifier, Dehumidifier

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.

EQUIPMENT SETTING 1HP 1HP/1AUX 1HP/2AUX 2HP 2HP/1AUX 2HP/2AUX
First stage heating	Y1	Y1	Y1	Y1	Y1	Y1
Second stage heating	–	W1	W1	Y2	Y2	Y2
Third stage heating	–	–	W2	–	W1	W1
Fourth stage heating	–	–	–	–	–	W2
First stage cooling	Y1	Y1	Y1	Y1	Y1	Y1
Second stage cooling	–	–	–	Y2	Y2	Y2
Fan	G
Accessory 1	Choice of: Humidifier, Dehumidifier, HRV/ERV ventilator
Accessory 2	Reversing valve O relay remains closed during cooling. Reversing valve B relay remains closed during heating.

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

First stage heating	Y1	W1	W1	Y1	W1	W1
Second stage heating	–	Y1	Y1	Y2	Y1	Y1
Third stage heating	–	–	W2	–	Y2	Y2
Fourth stage heating	–	–	–	–	–	W2
First stage cooling	Y1	Y1	Y1	Y1	Y1	Y1
Second stage cooling	–	–	–	Y2	Y2	Y2
Fan	G
Accessory 1	Choice of: Humidifier, Dehumidifier, HRV/ERV ventilator
Accessory 2	Reversing valve O or B. O relay remains closed during heating operation. B relay remains closed during cooling operation.

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.

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.

100% on time at Heat To setting -1.5°F
50% on time at Heat To setting
0% on time at Heat To setting + 1.5°F

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.

Built-in room sensor only
Built-in room sensor with auxiliary room sensor(s) (temperature is averaged)
Auxiliary room sensor only

Floor Sensor for Radiant Floor Heating

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

floor coverings.
If there are more than one floor temperature sensors, the temperature is averaged.

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.

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).

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.

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.

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.

Relative Humidity Operation

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.

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.

The thermostat can operate 3 types of humidifiers:

Stand Alone – The humidifier is not connected to the HVAC system.
The thermostat Mode can be set to Heat, Cool, Auto or Off.
Steam – The steam humidifier is ducted to the HVAC system.
The thermostat Mode can be set to Heat, Cool, Auto or Off.
Requires the system fan to turn on when operating.
Evaporative – A drum style humidifier which requires the heating system to operate to evaporate the water.
This system requires the system fan to operate.
The thermostat Mode must be set to Heat or Auto.

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.

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.

The thermostat can operate 2 types of dehumidifiers

Stand Alone – The dehumidifier is not connected to the HVAC system.
The thermostat Mode can be set to Heat, Cool, Auto or Off. DX Coil – The HVAC cooling system is used for dehumidification.
the Accessory 1 or Accessory 2 relay activates the DHUM operation on the air handling unit to operate the system fan at low speed.
The cooling compressor Y1 and Y2 relays are operated. The chilled DX coil condenses moisture from the air.
the cooling system can over cool the room temperature by 2°F (1°C) during dehumidification.

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.

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.

Error Messages

Technical Data

Warranty

Limited Warranty and Product Return Procedure

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.

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tekmarControls.com
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1-800-438-3903
Tel: 1-800-438-3903
fax: (250) 984-0815
tekmarControls.com

Reference

Download Manual:

tekmar IOM-T-564 Invita WiFi Thermostat Installational Manual

tekmar IOM-T-564 Invita WiFi Thermostat Installational Manual