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Tekmar tekmarNet 553 User Manual

Made by: Tekmar
Type: User Manual
Category: Thermostat
Pages: 13
Size: 0.92 MB


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© 2013 

 553_U - 04/13

1 of 12

A Watts Water Technologies Company

User Manual



 Thermostat 553




Replaces: New


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© 2013 

 553_U - 04/13

2 of 12

A Watts Water Technologies Company

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. 
This thermostat can lower its temperature setting at night or when you are away 
from the house.

Display of the time, schedule and the away key on the Home screen is optional and 
can be turned on or off in the programming menus.

To enter the programming menus, press and hold the Home button for 3 seconds.

Touchscreen Adjustments

The touchscreen of this thermostat makes it easy to change commonly used settings. 
Touch any item to adjust its setting. You will hear a “tick” sound each time you touch 
the display. When you are finished making changes, touching the Home button will 
return to the Home screen. If you do not touch the screen for 3 seconds, the Home 
screen is automatically displayed.


the Time

Adjust the




 Thermostat 553 Home Screen

Display Humidity, Heat & 
Cool settings, Floor or 
Outdoor temperature

Away Key

Switch between

Auto, Heat, 

Cool, Off & 

Emergency Mode

Return to the 
‘Home’ Screen 
from any menu

Adjust the 



Turn the Fan on




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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 is turned on.


Cooling is turned on.


The fan is turned on.






Operating at the occupied (day) temperature.


Operating at the unoccupied (night) temperature.



Communication is present.


Indicates an error is present.


Adjust the displayed setting.


Operating at Away temperature.


Hold for 3, 6, 9 or 12 hours.


The outdoor air temperature is above the Warm Weather 
Shut Down setting which shuts off the heating system.


Radiant floor cooling system is on.





Reached the room minimum or maximum.





Reached the floor minimum or maximum.


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Adjust the Temperature - Temporary Hold

Temporary hold allows a user to change the temperature for a period of time and then 
automatically return to the permanent temperature setting. This is especially useful 
in commercial buildings that are in use for short amounts of time. When selected, 
touching the up or down arrows changes the temperature for either 3, 6, 9 or 12 
hours. If the thermostat is using a schedule, ‘Schd’ provides a temporary hold until 
the next schedule event time. After the temporary hold time expires, the thermostat 
returns to normal operation. By default, the temporary hold feature is off.

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.


The temperature is not adjustable if the thermostat is in the Away scene, the 

Off mode or has been set to the “Secure” access level by the installer. 


When the temporary 
hold feature is enabled, 
touching the up or 
down arrow displays 

Use the Up or Down 

arrow to select a 


Tap the hour 
setting until 
the preferred 
length of time 
is displayed.

Cancel the 



‘HOLD’ is displayed while the 
thermostat is operating at the 

temporary hold temperature.


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Adjust the Time

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.

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

Use the   or   arrow to change the minutes, hour 
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.


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.

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. 


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

40°F (4.5°C), even in the Off mode.









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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.

To adjust the times when the day and night temperature start, touch the sun 


moon   on the screen. “Schedule Menu” will display followed by the first adjustable 
schedule event time.

Programmable Schedule - Day 

 and Night 

Use the   or   arrow to adjust the time for each event.

Touch ‘NEXT ITEM’ to advance to the next event or 
‘BACK’ for the previous event.

To accept the settings, press the home button, or leave 
the screen untouched for several seconds.

The thermostat schedule can be set to 2 or 4 events per 
day repeating on a 24 hr or 7 day cycle. These schedule 
settings are detailed later in this brochure.

Going Away Setting

This thermostat can save additional energy while you are 
away by lowering the heating temperature and increasing 
the cooling temperature. To enable this feature, touch “Going 
Away” on the screen. This is only available when the Away 
Key has been turned on in the Scene menu.

Select PERM (permanent) or a number of days using 
the   or   arrow.

Press the home button to accept the setting or leave the 
screen untouched for several seconds.

“Scene Away” is displayed on the home screen until the 
number of days expires.

Touch “Cancel Away” to cancel at any time.

Access Levels

This thermostat has access levels. It will typically be installed and programmed by a 
heating professional and then locked in a “User”, “Limited”, or “Secure” access level. 
System critical settings will not be available for adjustment. For more information on 
these settings, please consult your installing contractor or this product’s Installation 
and Operation Manual. This brochure focuses on settings available to the “User”.



The temperature is not adjustable while the thermostat is in Away.


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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.

Setting Items



Touch   or   arrow to adjust the setting if required.
Touch “NEXT ITEM” to advance to the next item within the menu.
Touch “BACK ITEM” to go backwards to the previous item within the menu.
To return to the parent menu after changing a setting, press and release the 
home button.
To return to the home screen, press and release the home button twice or wait 
30 seconds to automatically return to the home screen.

Press and 
hold for 3 
seconds to 
access the 


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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. Radiant 

floors heat the air by raising the floor temperature. Setting a floor temperature is a 
way of enhancing the comfort of your living space.

Air Temperature Only





If there is only an air temperature sensor (no floor sensor), the thermostat operates 
to control your desired air temperature.

Floor and Air Temperature 



If the air sensor is turned on and a floor sensor is connected, the thermostat will 
maintain your 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 your 
living space while protecting your floor coverings.

90°F (32°C)
Feels hot to the touch

80 to 85°F (26 to 30°C)
Feels warm to the touch

70°F (21°C)
Feels cool to the touch

40 to 45°F (5 to 7°C)
Feels cold to the touch

Suggested maximum for all floor 
types other than wood.

Bathrooms and kitchens. Suggested 
maximum for wood floors.

Rooms with large windows preventing 
under heating in the evening.

Freeze protection for garages.


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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.


Select on to display the time clock in the Home menu (available when schedules 
are not used).

Schedule Menu Settings

Energy savings can be achieved by lowering the heating temperature and increasing 
the cooling temperature when the building is unoccupied or during the night.
When operating on a programmable schedule, a   or a   symbol is shown in the 
home menu. The   or   indicates the current operating temperature.

All schedules are stored in permanent memory and are not affected by a 
loss of power.



Day temperature

Night temperature

This thermostat can operate on a programmable schedule in order to automatically 
lower the heating temperature and increase the cooling temperature setting. Options 

Turning off the schedule (OFF)
Operate a schedule that applies only to this thermostat zone (ZONE)
The ability to operate one of the four system-wide schedules as a master (Schedule 
Master 1 through 4*)
Join one of the four system-wide schedules as a member (Schedule Member 
1 though 4*)

*Requires the thermostat to be connected to a tekmarNet



Once the type of schedule has been selected, the thermostat can support schedules 
that have either:

2 events per day
4 events per day

Schedules with four events per day are common for residential use while two events 
per day are common for commercial installations.


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Scene Menu Settings


Scenes provide system-wide overrides to save energy. Select whether scenes are 
not used (none) or if the away scene is available.

Away Key

If scenes are available, select if the away key is available or not.


When used in conjunction with a tekmarNet


 system control to operate the 

heating appliance, the domestic hot water tank is not heated while in away scene.

Display Menu Settings


Select temperature units in degrees Fahrenheit or Celsius.

Backlight Options

Select how the display backlight operates.

ON = The display is always at full brightness.
DIM = When thermostat is not in use, the display is dim but is at full brightness 
when touched.
DIM   = When the thermostat is not in use, the display is dim while the schedule 
or scene is  . The display backlight is off when the schedule or scene is  . The 
thermostat display is at full brightness when touched.
ON   = When the thermostat is not in use, the display is at full brightness when 
the schedule or scene is  . The display backlight is off when the schedule or 
scene is  . The thermostat display is at full brightness when touched.
OFF = The display backlight is always off.

Secondary Item

Select whether the outdoor or floor temperature, relative humidity, or the room 
heating and cooling temperature settings is shown in the upper right hand corner 
in the Home menu.

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).
When a programmable schedule is selected, there is a time delay for the room to 
warm up or cool down from the   temperature to the   temperature. The thermostat 
has the option to use Optimum Start to predict the heat up or cool down rate of 
the room. When Optimum Start is set to On, the heating or cooling is started in 
advance to allow the room to reach the Set Room   temperature at the time set in 
the programmable schedule.

Schedule Menu Settings (Continued)


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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 Y = Number of hours the heat pump is heating
Heat W = Number of hours the radiant floor (first stage heat) is on
Heat W2 = Number of hours the backup heat is on
Cool Y = Number of hours the heat pump is cooling
Cool W = Number of hours the radiant floor is actively cooling the room (available 
in select radiant floor cooling installations)
Fan = Number of hours the fan has been operating
Humidify = Number of hours the humidifier is on
Dehumidify = Number of hours the dehumidifier is on

To clear the temperature highs and lows or the running hours:

1. Touch the temperature or running hours.

2. Display will show “


3. Touch Enter. 

Toolbox Menu

This menu is provides advanced level information.


Change the access level on the thermostat.

Status Info

Displays the current status of the thermostat including any overrides from the tekmarNet



system control. Toggles between “Status Info” and the current status.

System Normal = Thermostat is operating normally.
For all other thermostat status messages, please see the Installation & Operation 
Manual 553_D.

Software Version and Type Number

Display the software “SW”  and the “TYPE” number.


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All specifications are subject
to change without notice

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553_U - 04/13.

Product design, software and literature are Copyright ©2013 by tekmar Control Systems Ltd., 

A Watts Water Technologies Company.

  Head Offi ce: 5100 Silver Star Road, Vernon, B.C. 

Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650 Web Site: www.tekmarControls.com

More Information

Frequently Asked Questions

This User Brochure contains standard information on how to make adjustments 
to an installed product. More detailed information can be found in this product’s 
Installation and Operation Manual (553_D) at www.tekmarControls.com


Look for...

Corrective Action

No heating
No cooling

 indicates heat is on. If the 


displayed and there is no heat, contact your 
HVAC professional.

 indicates cooling is on. If the 


is displayed and there is no cooling, contact 
your HVAC professional.


The thermostat is in the Off mode. Touch the 
mode key to change to Heat, Cool, or Auto.

No   or   key

Touch the ‘Cancel Away’ key on the display.

Heat or cool 
on before 
scheduled time


Optimum Start is on and has turned on the 
heat or cooling in advance of your schedule 


 key does 

not increase 



There may be a maximum room temperature 
set. Consult your HVAC professional.


The floor has reached the floor maximum 
setting. Consult your HVAC professional.


Warm weather shut down is in effect. 
Adjustable from your system control.

key does not 


There may be a minimum floor temperature 
set. Consult your HVAC professional.


The floor has reached the floor minimum setting. 
Consult your HVAC professional.