552_D 09/14 tekmarNet® Thermostat 552 Zoning Replaces: 08/11 Installation & Operation Manual Features Introduction ® The tekmarNet Thermostat 552 provides operation for: • One Stage Heat • • • • • • • • • • • • • • Touchscreen Bright Backlight tekmarNet® Communication Outdoor Temperature Display Floor Temperature Display 7-Day, 4 Event Programmable Schedule Optimum Start Scenes Away Key Air Group Member Freeze Protection Exercise Pump or Valves Zone Synchronization Two Auxiliary Sensor Inputs Benefits
Table of Contents Getting Started ................................................................................................... 4 Installation .............................................................................................................. 4 Preparation......................................................................................................... 4 Removing The Thermostat Base .......................................................................
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.
Getting Started Congratulations on the purchase of your new tekmar thermostat. This manual will step through the complete installation, programming and sequence of operation for this control. At the back, there are tips for control and system troubleshooting.
Removing The Thermostat Base To remove the thermostat base: • Locate the tab on the bottom of the thermostat. • Push the tab with either your thumb or with a screwdriver. • Lift the thermostat front away from the thermostat’s base. Mounting The Thermostat Base If a single gang box is used: • Feed the wiring through the large hole of the thermostat base. • Fasten the base of the thermostat to the gang box. • Terminate wiring to the wiring strip. • Push the thermostat front onto the thermostat base.
Thermostat Wiring The thermostat operates a single heating system zone and can be wired in four different ways. tekmarNet®2 - Allows the thermostat to be wired point-to-point using 2 wires to a tekmarNet®2 Wiring Center, House Control, or Zone Manager. This allows easy wiring for retrofit applications. tekmarNet®4 - Allows the thermostat to be wired using 4 wires to a tekmarNet Wiring Center or Zone Manager point-to-point.
Wiring - Stand Alone to Transformer and Zone Valve -------------------- Install field jumper wire R to Rh Zone Valve No Power R C tN4 C R tN2 tN2 Rh W1 Optional Sensor 1 Optional Sensor 2 S1 Com S2 24 V (ac) transformer L N Wiring - Stand Alone to Switching Relay or Zone Valve Control ------------ Optional Sensor 1 W R W R W R (T) (T) (T) (T) (T) (T) 24 V Com No Power tN4 C R tN2 tN2 Rh W1 Optional Sensor 2 S1 Com S2 Switching Relay X X Zone 1 Zone 2 Zone 3 H N H N H N Zone Pump N L N
Only qualified personnel should perform testing procedures. A licensed electrician is recommended. Testing the Thermostat Wiring Testing tekmarNet ® 2 Wiring -------------------------------------------------------------Testing the Power If the thermostat display turns on, this indicates that the thermostat is operating correctly and there are no electrical issues. In the event that the display is off, or the display is cycling on and off: 1. Remove the thermostat front. 2.
Testing tekmarNet ® 4 and Stand Alone Wiring -------------------------------------Testing the Power 1. Remove the front cover from the thermostat. 2. Use an electrical test meter to measure (ac) voltage between the R and C terminals. The reading should be 24 V (ac) +/– 10%. 3. Install the front cover. Testing the Heat Relay 1. Remove the front cover from the thermostat. 2. Touch the button and set the heating temperature below the current room temperature. There should be no “Heat On” symbol on the display.
Mounting the Thermostat Thermostat Base Thermostat Front Push the thermostat front onto the thermostat base. Installation is now complete. Push Cleaning the Thermostat The thermostats’s exterior can be cleaned using a damp cloth. Moisten the cloth with water and wring out prior to wiping the control. Do not use solvents or cleaning solutions.
Switch Settings 1051-03 1051-03 1 2 3 Switch Settings: Setback Unlock Unlock Lock Scene Off Unused ON Switch Settings ON 1 2 Cool Master 1 None Back of Thermostat tekmarNet tNt 552 One Stage Heat Thermostat 552 Mmm YYYY / Lot # 12345 One Stage Heat / www.tekmarcontrols.com Power: 24 V ±10% 50/60 Hz 1.7 VA Power: 24 V2 A(ac) ±10% 1.
User Interface Home Screen The touchscreen of the 552 provides one touch access to these settings. Display the Floor or Outdoor temperature. Adjust the Time. Adjust the Schedule. Room Temperature. Away Key. Adjust the Temperature. Turn the Heat on or Off. Home Button. Return to the ‘Home’ Screen from any menu. Press and hold for 3 seconds to access the programming menus. Home Button Symbols Description HEAT ON Heat is turned on. SCENE AWAY Operating at Away temperature.
Programmable Settings Programming Menus Press and hold the Home button for 3 seconds to enter the programming menus. The thermostat returns to the last programming menu previously used. Press and hold for 3 seconds to access the programming menus. Select a Programming Menu --------------------------------------------------------------• Touch “NEXT” to advance (clockwise in above illustration) to the next menu. • Touch “BACK” to go backwards (counterclockwise in above illustration) through the menus.
Set Temp Menu (1 of 3) Setting Display SET HEAT ROOM Set the room heating temperature during the event. Access Level: Installer, User Room Range: 40 to 95°F (4.5 to 35.0°C) Conditions: Room Sensor set to ON or Sensor 1 or Default: 70°F (21.0°C) Sensor 2 set to Room. SET HEAT ROOM Set the room heating temperature during the event. Access Level: Installer, User Room Range: 40 to 95°F (4.5 to 35.
Set Temp Menu (2 of 3) Setting Display SET HEAT FLOOR Set the floor heating temperature while in the event. Floor Access Level: Installer, User Range: 40 to 122°F (4.5 to 50.0°C) Conditions: Room Sensor set to OFF and Sensor 1 or Sensor 2 set to Floor, and Schedules are in use or Scenes are set to All or Guest. Default: 65°F (18.5°C) WARM WEATHER SHUT DOWN Set the outdoor air temperature at which heating is suspended during the event. Access Level: Installer Range: CTRL (control), 40 to 100°F (4.
Set Temp Menu (3 of 3) Setting FLOOR MAXIMUM Set the floor maximum temperature in order to protect the floor covering. Suggested settings: Tile = 90°F (32°C) Hardwood Floor = 85°F (29°C) Display Range: 40 to 122°F (4.5 to 50.0°C), OFF Access Level: Installer Conditions: Sensor 1 or Sensor 2 set to Floor, and either Room Sensor set to ON, or Room Sensor Default: 85°F (29.5°C) set to OFF while Sensor 1 or 2 is set to Room, and Schedules or Scenes are in use.
Time Menu (1 of 2) Setting Display MINUTE Select the current time minutes. Access Level: Installer, User Range: 00 to 59 Conditions: Schedule is used or Clock is set to ON. Default: 00 HOURS Select the current time hours. Access Level: Installer, User Range: 12 AM to 11 PM or 00 to 23 Conditions: Schedule is used or Clock is set to ON. Default: 12 AM DAY OF WEEK Select the current day of the week.
Time Menu (2 of 2) Setting Display DAYLIGHT SAVINGS TIME Select if daylight savings time is observed. Access Level: Installer, User Conditions: Clock setting is set to ON. Range: OFF or ON Default: ON TIME MODE Select either 12 or 24 hour time format. Access Level: Installer, User Conditions: Clock setting is set to ON. Range: 12 or 24 hour Default: 12 hour CLOCK Select whether or not to show the time clock on the display.
Schedule Menu (1 of 2) The schedule menu can operate on a 24 hour or 7 day repeating schedule. When a 24 hour schedule is selected, “SuMoTuWeThFrSa” is shown on the top of the screen to show that the event time applies to all days of the week. When a 7 day schedule is selected, each individual day of the week is shown with the event time. Setting Display EVENT 1 The first programmable schedule time period of the day. The temperature settings are used during this time period.
Schedule Menu (2 of 2) Setting Display SCHEDULE Select if the thermostat should change the temperature automatically using a programmable schedule. OFF = Programmable schedule is not used. Zone = Applies to this thermostat only. Master 1, 2, 3, 4 = In charge of one of four available network schedules. Member 1, 2, 3, 4 = Follows selected network schedule.
Display Menu (2 of 2) Setting Display BACKLIGHT Select how the display backlight operates. ON = Always full brightness. DIM = Dim when inactive, on when touched. DIM = Dim in , off in . On when touched. ON = On in , off in . On when touched. OFF = Always off. Access Level: Installer, User Range: DIM, ON, DIM , ON , OFF Conditions: Always available. Default: DIM SECONDARY ITEM Determine the default item in the upper right hand corner of the display.
Monitor Menu (1 of 3) Setting Display ROOM AVERAGE Current room temperature. Displays the average if there are multiple room sensors. Range: -58 to 212°F (-50.0 to Access Level: Installer 100.0°C) Conditions: Sensor 1 or 2 is set to Room. Default: Not applicable. FLOOR AVERAGE Current floor temperature. Displays the average if there are multiple floor sensors. Access Level: Installer Conditions: Sensor 1 or 2 is set to Floor. Range: -58 to 212°F (-50.0 to 100.0°C) Default: Not applicable.
Monitor Menu (2 of 3) Setting OUTDOOR HIGH The highest recorded outdoor air temperature measurement. Touch the number and touch the ENTER key to reset. Display Range: -76 to 149°F (-60.0 to 65.0°C) Access Level: Installer, User Conditions: Setup menu setting SENSOR 1 is set to Outdoor or an outdoor temperature is available on Default: Not applicable. the tekmarNet® System. OUTDOOR LOW The lowest recorded outdoor air temperature measurement. Touch the number and touch the ENTER key to reset.
Monitor Menu (3 of 3) Setting Display FLOOR LOW The lowest recorded floor temperature measurement. Touch the number and touch the ENTER key to reset. Range: -76 to 149°F (-60.0 to Access Level: Installer, User 65.0°C) Conditions: Setup menu setting SENSOR 1 or 2 is Default: Not applicable. set to FLOR. HEAT W1 The total number of hours the W1 relay has been operated for heating. Touch the number and touch the ENTER key to reset.
Toolbox Menu (2 of 3) Setting Display 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. Override W1 = The tekmarNet® system control is either forcing the W1 relay on or off. WWSD = Warm Weather Shut Down is in effect. Air Group Master Cool = Heating is off while the cooling system is on. Optimum Start = Heating is started early in order to meet temperature setpoint at Event 1 or Event 3.
Toolbox Menu (3 of 3) Setting SOFTWARE AND TYPE VERSION Displays the software version and the tekmar type number. Access Level: Installer, User, Limited, Secure Conditions: Always available. DEVICE COUNT Provides a count of all the tekmarNet® thermostats and setpoint controls on the tekmarNet® system. Access Level: Installer Conditions: Must be connected to a tekmarNet® system. USER TEST Select to begin the test routine by touching the up arrow. Step 1: The W1 relay will turn on.
Setup Menu (1 of 2) Setting Display SENSOR 1 Select to the type of sensor connected to auxiliary sensor input 1. Access Level: Installer Range: OFF, ROOM, FLOR (floor), OUT (outdoor) Conditions: Always available. Default: OFF SENSOR 2 Select to the type of sensor connected to auxiliary sensor input 2. Access Level: Installer Range: OFF, ROOM, FLOR (floor) Conditions: Always available. Default: OFF ROOM SENSOR Select whether the built-in room temperature sensor is on or off.
Setup Menu (2 of 2) Setting W1 THERMAL MOTOR Select whether the first stage of heat W1 operates a thermally actuated zone valve (wax actuator). When set to ON, there is a 3 minute delay before operating the pump and any heat sources. Access Level: Installer Conditions: Setup menu setting W1 TERM is set to CTRL, HRF1, HRF2, CONV, or COIL. W CYCLES PER HOUR Select the number of heating cycles per hour. SYNC = Synchronize thermostats to a 20 minute cycle.
Sequence of Operation Section A Heating Operation Set Heat Temperature -----------------------------------------------------------------------------When using only a room temperature sensor, the thermostat operates the heating system to maintain the Set Heat Room temperature. When using only a floor temperature sensor, the thermostat operates the heating system to maintain the Set Heat Floor temperature. In this case, the thermostat does not try to control the air temperature.
Freeze Protection ----------------------------------------------------------------------------------The thermostat operates the heat whenever the room or floor temperature falls below 40°F (4.5°C) even when the mode is set to off. Exercising ------------------------------------------------------------------------------------------------When connected to a tekmarNet® system control, the thermostat exercises the heat relay for 10 seconds every 3 days.
Section C Air Group Operation In order to prevent heating and cooling at the same time, this thermostat can operate together with other thermostats on a tekmarNet® system to form an air group. On older model thermostats the air group functionality was previously described as a cool group. In an air group, one thermostat is assigned as the air group master. The air group master operates the cooling equipment for the group. This thermostat can be set to be a member of the air group.
Section E Temperature Adjustment Permanent Adjustment - No Schedule --------------------------------------------When no programmable schedule is used, touch the up or down arrows to permanently set the “Set Heat” temperature. This thermostat is capable of controlling the air or floor temperature. When set to control the floor temperature alone, the display will show “Floor” instead of “Room”.
Section F Programmable Schedules Lowering the room temperature setting reduces the amount of fuel required to heat the building resulting in energy savings. 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.
Section G Scenes (System Override) Scenes provide an easy way to save energy while away on vacation, or override a programmable schedule when plans change. --------------------------------------------------------------Away Key -----------------------------------This thermostat includes an Away Key to quickly turn down the heating temperature on all thermostats and suspend heating the domestic hot water tank to maximize energy savings. To turn on the Away Key, go to the Scene menu.
Recommendation on How to Use Scenes -----------------------------------Choosing how to use scenes depends on the needs and lifestyle of the customer using the building. Multi-Tenant Apartments Scenes should be disabled (None) in multi-tenant buildings where the each occupant has differing heating requirements. Residential Homes Some residential customers may not require scenes, in which case, scenes can be disabled (None).
Section I Access Levels The thermostat Toolbox menu supports four access levels: Installer (INST), User (USER), Limited (LTD), and Secure (SEC). The access level can be adjusted when the thermostat is unlocked.
Troubleshooting Error Messages (1 of 5) Error Message Description SETUP MENU SAVE ERROR The thermostat failed to read the Setup menu settings from memory and has reloaded the factory default settings. The thermostat stops normal operation until all settings in the Setup menu are checked except to provide freeze protection. To clear the error, set the access level to Installer and check all settings in the Setup menu.
Error Messages (2 of 5) Error Message Description SCENES MENU SAVE ERROR The thermostat failed to read the Scenes menu settings from memory and has reloaded the factory default settings. The thermostat continues to operate normally while displaying this error. To clear the error, set the access level to Installer and check all settings in the Scenes menu. DISPLAY MENU SAVE ERROR The thermostat failed to read the Display menu settings from memory and has reloaded the factory default settings.
Error Messages (3 of 5) Error Message Description ROOM SENSOR SHORT CIRCUIT ERROR Due to a short circuit, the thermostat is unable to read the builtin room temperature sensor. If Sensor 1 or 2 is set to Room, or the thermostat is connected to a tekmarNet® system control, the thermostat continues to operate, otherwise operation stops. The error cannot be field repaired. Contact your tekmar® sales representative for repair procedures.
Error Messages (4 of 5) Error Message Description SENSOR 2 OPEN CIRCUIT ERROR Due to an open circuit, the thermostat is unable to read auxiliary Sensor 2. The thermostat stops normal operation if Sensor 2 is the only active Room or Floor sensor or if a Floor Maximum temperature has been set. Check the auxiliary sensor wire for short circuits according to the sensor installation manual. It may be necessary to replace the auxiliary sensor.
Error Messages (5 of 5) Error Message Description ERROR AT THERMOSTAT There is an error on a different thermostat or setpoint control connected to the tekmarNet® system and not on this thermostat. 01 to 24 = There is an error on a thermostat or setpoint control with this tekmarNet® address. ERROR AT THERMOSTAT There is an error on a different thermostat or setpoint control connected to the tekmarNet® system and not on this thermostat.
Frequently Asked Questions Symptom Look for... Corrective Action indicates heat relay W1 is on. If the is displayed and there is no heat, check if the zone valve or zone pump is operating. No heat MODE The thermostat is in the Off mode. Touch the mode key to change to Heat. No or keys Touch the ‘Cancel Away’ key on the display.
Technical Data tekmarNet® Thermostat 552; One Stage Heat Packaged weight 0.8 lb. (350 g) Enclosure White ABS / PC plastic Dimensions 5” H x 3-1/4” W x 15/16” D (127 x 82 x 23 mm) Approvals Meets Class B: ICES & FCC Part 15 Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing Power supply 24 V ±10%, 50/60 Hz, 1.8 VA Standby, 56 VA fully loaded, NEC / CEC Class 2 W1 Relay 24 V (ac) 2 A Sensors: NTC thermistor, 10 kΩ @ 77°F (25°C ±0.
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.
