tekmar 521 User Manuals

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Programmable Thermostat 521

User Manual

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This brochure will provide you with the information you need to benefit the most from your tekmar Thermostat. Please visit www.tekmarControls.com for more detailed information on this or any other tekmar product.

User Interface

FrThWeTuMoSu

MIN MAX

Floor

MODE

Heat Cool

Off

Room Floor

Heat On

Cool On

Display Symbols

This thermostat will display symbols on its screen in order to indicate what mode it is in, what temperature it is operating at, or what equipment it is trying to turn on. This section describes each of those symbols.

HEAT ON

Heat is turned on.

COOL ON

Cooling is turned on.

FAN

The fan is turned on.

MODE HEAT

The heating system is allowed to operate.

MODE COOL

The cooling system is allowed to operate.

SUN

Schedule operating at the occupied temperature.

MOON

Schedule operating at the unoccupied temperature.

WARNING SYMBOL

Indicates an error is present.

HOLD

Permanently holds the temperature and overrides the schedule.

MIN

The floor is at or below the floor minimum temperature.

MODE OFF

The heating and cooling systems are off.

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MAX

The floor has reached the floor maximum temperature.

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Mode Button Operation

Press the Mode button to select Heat, Cool, or Off operation. The thermostat must be configured for heat/cool/fan operation in order for the cooling operation to be available.

Heating Operation

Heating is available when the Mode is set to Heat. To change the heat temperature setting, push the or button to select a preferred temperature setting for the current schedule time period. The Heat On symbol is shown on the display when the thermostat is heating.

To change the temperatures for the other time periods, enter the Set Temp menu by pressing both the and press PRGM to enter the menu.

and buttons together, press Menu to locate the Set Temp menu,

Temperature Sensor Location

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The thermostat can operate the heating system based upon either an air temperature sensor, a floor temperature sensor, or a combination of both the air

and floor temperature sensors together.

Air Temperature Only

If there is only an air temperature sensor (no floor sensor), the thermostat maintains the desired air temperature.

Floor Temperature Only

If the air sensor has been disabled, the thermostat will only maintain floor temperature and ignore air temperature. This operation is recommended for areas such as bathrooms to ensure that tile floors are warm to the touch.

Floor and Air Temperature

If the air sensor is turned on and a floor sensor is connected, the thermostat will maintain the desired air temperature as well as a minimum floor temperature.

This operation is recommended for areas with large windows that allow the sun to shine into a room and keep it warm without the need for heat. This can allow the floors to cool off during the afternoon. When the sun goes down, 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.

This operation is also 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.

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