557_U 08/12 tekmarNet® Thermostat 557 Zoning Replaces: New User Manual A Watts Water Technologies Company 1 of 12 © 2012 557_U - 08/12
This brochure will provide you with the information you need to benefit the most from your tekmarNet® thermostat. Please visit www.tekmarControls.com for more detailed information on this or any other tekmar product. This thermostat provides heating and cooling for one zone in your building. It will maintain your air temperature with an on board room sensor. Floor temperature control may also be enabled in this thermostat when a floor sensor is installed.
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. %RH Humidifying %RH Dehumidifying SUN Operating at the occupied (day) temperature. MOON Operating at the unoccupied (night) temperature. tekmarNet® Communication is present.
Adjust the Temperature To change the heating or cooling set temperature, touch the or arrows to select a preferred temperature setting. Press the home button to accept the setting or leave the screen untouched for several seconds. To toggle between changing the heating or cooling setting, press the H <> C key. This thermostat is capable of controlling the floor or air temperature.
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.
Programmable Schedule - Day and Night This thermostat is capable of running at a lower temperature setting when you are asleep or out of the building. When the schedule setting is on, day and night temperature settings will display on the screen. If you adjust the temperature while the sun is displayed, the day setting changes. If you adjust the temperature while the moon is displayed, the night setting changes.
Program Menu Settings To Enter the Programming Menus --------------------------------------------------Press and hold the Home button for 3 seconds to enter the programming menus. Select a Programming Menu --------------------------------------------------------• Touch “NEXT” to advance (clockwise in the illustration below) to the next menu. • Touch “BACK” to go backwards (counterclockwise in the illustration below) through the menus. • Touch “ENTER” to enter a menu.
Screen Clean Menu Entering the Screen Clean menu gives you 30 seconds to clean the thermostat and display with a moist cloth. Do not use solvents to clean the thermostat. Set Temp Menu Entering the Set Temp menu allows you to permanently change both the day and night temperature settings for both heating, cooling. If your thermostat is being used for radiant floor heating, a floor sensor can be connected and floor minimum day and night temperatures can be set.
Time Menu Settings Set date, month and year Required for daylight savings time. Daylight Save Automatic daylight saving time update for the spring and fall. Time Mode Select either 12 or 24 hour time format. Clock Select on to display the time clock in the Home menu (available when schedules are not used). Schedule Menu Settings Energy savings can be acheived by lowering the heating temperature and increasing the cooling temperature when the building is unoccupied or during the night.
Schedule Menu Settings (Continued) The schedules can be repeated every: • 24 hours • 7 days (week) A 7 day schedule allows a unique time to be set to change the temperature for each day of the week. The schedule also includes a “SKIP” option that allows the programmable schedule to skip a temperature change and remain at the previous temperature setting. The “SKIP” setting can be found between 11:50 PM (23:50 hours) and 12:00 AM (0:00 hours).
Monitor Menu The monitor menu allows you to view the following temperatures and running hours: • Outdoor temperature highs and lows • Room temperature highs and lows • Floor temperature highs and lows (requires floor sensor to be installed) • Filter Hours = Number of hours since the air filter was last replaced • Heat Y1 = Number of hours the heat pump is heating • Heat Y2 = Number of hours the second stage heat pump is heating • Heat W1 = Number of hours the radiant floor (first stage heat) is on • Heat W2
Frequently Asked Questions Symptom Look for... Corrective Action indicates heat is on. If the is displayed and there is no heat, contact your HVAC professional. No heating or No cooling indicates cooling is on. If the is displayed and there is no cooling, contact your HVAC professional. MODE The thermostat is in the Off mode. Touch the mode key to change to Heat, Cool, or Auto. key Touch the ‘Cancel Away’ key on the display.
