Tekmar tekmarNet 557 User Manual page 5

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Mode of Operation

This thermostat has 5 operating modes: Heat, Cool. Auto, Emer (emergency), and

Off. Touch the Mode key on the screen to select the desired mode of operation.

Auto mode will automatically switch between heating, cooling and the emergency

backup heat as required. Emergency mode is for heat pump installations whereby the

heat pump is forced off and the backup heat is manually turned on. The temperature

is not adjustable while the thermostat is off.

Note: If near freezing temperatures are detected the system will operate to maintain

40°F (4.5°C), even in the Off mode.

Secondary Temperature Display

This thermostat can display the outdoor or floor temperature, relative humidity,

or the room heating and cooling temperature settings in the smaller number area

at the top right of the screen. To toggle the item currently displayed, touch the

secondary temperature. Display of the floor or outdoor temperature requires a

connection to an external floor or outdoor air sensor.

Adjust the Time

To change the current time, touch the clock on the display.

•

Use the

and day.

•

Touch "NEXT ITEM" to advance to the next item or

"BACK" for the previous item.

•

To store the new time and date, press the home button,

or leave the screen untouched for several seconds.

Note: The time is not visible when the thermostat is in

the Away scene or if the clock display is turned off in the

Time menu.

A Watts Water Technologies Company

arrow to change the minutes, hour

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557_U - 08/12