Tekmar D552 Touchscreen Thermostat Installational Manual

Tekmar D552 Touchscreen Thermostat

Introduction

The tekmarNet® Thermostat 552 provides operation for: One Stage Heat

Features

• 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
• Floor Cooling Support
• Two Auxiliary Sensor Inputs

Benefits

• Simple to Use
• Increased Comfort Through
• Precise Temperature Control
• Conserves Energy
• Convenience Through Internet
• Connectivity
• Warm Radiant Floors
• Protects Radiant Floors From
• Over Heating

Getting Started

Congratulations on the purchase of your new tekmar thermostat. This manual will step through the complete installation, programming, and sequence of operations for this control. At the back, there are tips for control and system troubleshooting.

Installation

Caution
Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury or death. It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed into the control circuit.

Preparation

Tools Required

• tekmar or jeweler screwdriver
• Phillips head screwdriver
• Wire Stripper

Materials Required

• 18 AWG LVT Solid Wire (Low Voltage Connections)
• 2, #6 x 1” Wood Screws

Installation Location 

Choose the placement of the thermostats early in the construction process to enable proper wiring during rough-in.

Consider the following:

• Interior Wall.
• Keep dry. Avoid potential leakage onto the control.
• Relative Humidity less than 90%. Non-condensing environment.
• No exposure to extreme temperatures beyond 32-122°F (0-50°C).
• No draft, direct sun, or other cause for inaccurate temperature readings.
• Away from equipment, appliances, or other sources of electrical interference.
• Easy access for wiring, viewing, and adjusting the display screen.
• Approximately 5 feet (1.5 m) off the finished floor.
• The maximum length of the wire is 500 feet (150 m).
• Strip wire to 3/8” (10 mm) for all terminal connections.
• Use standard 4 conductors, 18 AWG wire.

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 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.

If a gang box is not used:

• Feed the wiring through the large hole in the thermostat base.
• Mount the thermostat base directly to the wall.
• Use screws in the screw holes to fasten the thermostat to the wall. At least one of the screws should enter a wall stud or similar rigid material.
• 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®4 Wiring Center or Zone Manager. The tN4 communication bus can also be daisy-chained to allow multiple thermostats to be connected together without home running wires back to the mechanical room.
• Stand Alone – Simple 3-wire connection to a 24 V (ac) transformer and zone valve.
• Stand Alone – Simple 3-wire connection to a switching relay or zone valve control.

Wiring – tekmarNet®2
Wiring – tekmarNet®4
Wiring – Stand Alone to Transformer and Zone Valve
Wiring – Stand Alone to Switching Relay or Zone Valve Control

Compatible Sensors

The thermostat is compatible with Indoor Sensor type 076, 077, 084, Floor Sensor type 072, 073, 079, and Outdoor Sensor type 070.

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. Use an electrical meter to measure DC voltage between the tN2 terminals.
   If the DC voltage is 0 V (dc) for at least 20 seconds, then there is an open or short circuit in the tN2 wires.
   If the DC voltage is 0 V (dc) for 10 seconds and then is 23 to 24 V (dc) for 5 seconds, this indicates the wiring is correct.
3. Connect the thermostat to the tN2 wires connected to a zone on a House Control, Wiring Center, or Zone Manager.
4. If the thermostat display is off, or is cycling on and off, move the thermostat to the next available zone on the House Control, Wiring Center, or Zone Manager.
   If the thermostat display remains permanently on, there may be a fault with the previously tried zone on the House Control, Wiring Center, or Zone Manager.
   If the thermostat display continues to be off, or is cycling on and off, there may be a fault on the thermostat.
   If a fault is suspected, contact your tekmar sales representative for assistance.

Testing the Heat Zone Output Wiring

1. Touch the button and set the heating temperature above the current room temperature. Make sure the display does not show “WWSD” or “Floor Max”.
2. When the “Heat On” symbol appears on the display, use an electrical meter to check for voltage on the House Control, Wiring Center, or Zone Manager relay.
   The voltage is 24 V (ac) for zone valves, and 120 V (ac) for zone pumps when operating correctly.

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.
3. Set the electrical test meter to continuity.
4. Place electrical meter probes between R and W. There should be no continuity. If there is continuity then there may be a wiring fault or the relay may be faulty.
5. Touch the button and set the heating temperature above the current room temperature. Make sure the display does not show “WWSD”. The “Heat On” symbol should appear on the display.
6. There should now be continuity between the R and W terminals.

Testing the tekmarNet®4 Bus Wiring
The symbol is shown on the display when communication is present. If the thermostat is connected in a network and the communication is missing, there may be an open or short circuit on the tN4 and C bus wires.

1. Remove the front cover from the thermostat.
2. To test for short circuits:
   • Disconnect the tN4 bus wires on one end.
   • Install wire nuts on each wire to ensure the wire ends are not touching.
   • Disconnect the tN4 bus wires on the other end.
   • Measure for continuity using an electrical meter.
   • If continuity is present, there is a short circuit fault along the wires. It is recommended to replace the tN4 bus wires.
3. To test for open circuits:
   • Disconnect the tN4 bus wires on one end and connect them together.
   • Disconnect the tN4 bus wires on the other end.
   • Use an electrical meter to measure for continuity.
   • If there is no continuity, there is an open circuit fault along the wires. It is recommended to replace the tN4 bus wires.

Mounting the Thermostat

Push the thermostat front onto the thermostat base. Installation is now complete.

Cleaning the Thermostat

The thermostat’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

Switch	Position	Action
1	ON	LOCK ACCESS LEVEL Thermostat is locally locked and the access level cannot be changed. Set to Lock when installation has been completed.
	OFF	UNLOCK ACCESS LEVEL Thermostat is unlocked and the access level may be changed. Go to the Toolbox menu to change the access level. Set to Unlock during the installation process. Note: tekmarNet® system controls include a Global Lock that locks all connected thermostats. Set the tekmarNet® system control to unlock to allow access level adjustment on all connected thermostats.

User Interface

Home Screen

The touchscreen of the 552 provides one-touch access to these settings.

Symbols Description

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.

Select a Programming Menu 

• Touch “NEXT” to advance (clockwise in the above illustration) to the next menu.
• Touch “BACK” to go backward (counterclockwise in the above illustration) 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 back 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.

Set Temp Menu

Time Menu

Schedule Menu

The scheduled 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.

Display Menu

Scenes Menu

Monitor Menu

Toolbox Menu

Setup Menu

Sequence of Operation

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. This is ideal for bathrooms and some kitchen applications where the customer wants their feet to feel warm on the floor. This is also ideal for garages so that the heating system is not affected by the opening of the garage door in cold outdoor weather.
  When using both a room and a floor temperature sensor, the thermostat always maintains the Floor Minimum temperature, even when the air temperature is satisfied. When the air temperature is below the Set Heat Room temperature, the thermostat operates the heating system to maintain the Set Heat Room temperature. The floor is never heated above the Floor Maximum setting in order to protect the floor covering. Suggested Floor Maximum settings are 90°F (32°C) for tile, stone, or concrete floors and 85°F (29°C) for wood floors. The “Heat On” symbol is shown on the display when the thermostat is heating.
• Room Minimum and Maximum —————————————-
  Room Minimum and Maximum temperature settings are available in the Set Temp menu. These allow the installer to select start and stop limits for the temperature setting for the User and Limited access levels. This is useful in commercial installations and child/guest bedrooms where the availability of the full temperature setting range may not be desirable.
• Warm Weather Shut Down ——————————————–
  When the outdoor air temperature exceeds the Warm Weather Shut Down (WWSD) setting on the tekmarNet® main control, the heating system is shut off.
• Radiant Floor Baseload ———————————————-
  When the terminal unit is selected to be a Hydronic Radiant Floor (HRF1 or HRF2) and no floor temperature sensor is installed, the thermostat has the option to provide baseload heating. This allows the radiant floor to be heated even though the room air temperature is satisfied. This is useful in areas where a radiant floor heating zone is overlapped by an air heating system. The radiant floor heating is overwhelmed by the quick heat-up rate of the air heating system, resulting in a radiant floor heating zone that rarely turns on. The radiant baseload option allows the radiant floor to counteract the air heating system by heating the floor at a reduced output even when the room air temperature is satisfied. This is also useful in areas that experience large solar gains through windows. The radiant baseload is automatically shut off in the summer by the warm weather shutdown feature.
• 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. Exercising helps prevent zone valves or zone pumps from failing due to precipitate buildup. During exercise, the thermostat shows “TEST” on the display.
• Flushing
  The flushing feature is for open-loop systems that use a domestic hot water tank as a heat source. Flushing ensures that fresh potable water is circulated through the system once each day. If the thermostat is connected to a tekmarNet® system control with the Flushing feature turned on, the thermostat display will display “FLUSHING” for the duration of the flushing operation.
• Hydronic System Supply Pump
  When connected to a tekmarNet® system control, the thermostat’s W1 Pump setting affects how the primary pump or mix pump on the system control operates. When connected to the boiler bus, the boiler system or primary pump is operated. When connected to the mix bus, the mix system pump is operated.
  If the thermostat operates a motorized or thermal motor zone valve, the W1 Pump setting should be set to On.
  If the thermostat operates a thermal motor (wax actuator) zone valve, set the W1 Thermal Motor setting to On. This provides a three-minute delay to allow the zone valve to open before the primary or mix pump is turned on. In special applications with multiple zoning manifolds, the W1 Pump setting can be set to Off. This allows a Zone Group Pump located on the Zone Manager, or Wiring Center to operate the pump for the manifold.
• DHW Tank Priority
  When a tekmarNet® system control is heating an indirect Domestic Hot Water (DHW) tank, the thermostat may shut off the heating zones to allow the DHW tank to recover quickly. This is determined by the DHW priority of the tekmarNet® system control.

Radiant Floor Cooling Operation

The thermostat has the option to support radiant floor cooling when connected to a heat pump control using tekmarNet® communication. The terminal unit type must be set to HRF1 or HRF2, the floor cooling setting must be set to On and the heating system must be in Warm Weather Shut Down (WWSD). When the heat pump system control operates in cooling mode, all thermostats set for floor cooling on the tekmarNet® bus activate the first stage heating contact (W1) at the same time to allow chilled water into the system. The thermostat continues to operate the cooling until either the room temperature reaches the Set Heat temperature plus 3°F (Set Heat+1.5°C) or reaches a minimum temperature of 74°F. If only a floor sensor is installed, the floor cooling setpoint is 67°F (19.5°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. When operating as a air group, the air temperature readings of all the air group member thermostats are communicated to the air group master thermostat and an average temperature is determined. When the air group master is in cooling operation, the air group member thermostats do not operate the heating system for air heating. If the Set Heat Room temperature is adjusted while the air group is cooling, COOL is flashed on the display to alert the user that the air group cooling is presently on and heating is not available. Once the cooling system shuts off, heating is available if required.

Time Clock

The thermostat includes a time clock that is automatically visible in the Home menu when a programmable schedule is used. If the schedule is not used, the user has the option to select whether the time is shown in the Home menu. During a loss of power, the thermostat continues to keep the correct time and date for at least 4 hours. If the power is off for more than 4 hours, the user will need to set the time. The thermostat supports automatic updates for daylight savings time. Simply set Daylight Save to On together with the correct day, month, and year and the time is automatically updated each spring and fall. When connected to a tekmarNet® system, adjustment of the time on one thermostat updates all connected thermostats. This option can be disabled by selecting the Local Network Group set to be On.

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”.
Permanent Adjustment – With Schedule
When a programmable schedule is used, there are two room heating temperatures available, one for the time period and another for the time period. When touching the up or down arrows to change the temperature, only the temperature for the current time period is changed.

1. To adjust the temperature for both time periods, press and hold the Home button for 3 seconds to enter the programming menu.
2. Enter the “SET TEMP” menu to adjust the following settings:
   • Set Heat Room (air heating or air heating with floor sensor)
   • Set Heat Room (air heating or air heating with floor sensor)
   • Set Heat Room AWAY (air heating or air heating with floor sensor)
   • Floor Min (air heating with floor sensor)
   • Floor Min (air heating with floor sensor)
   • Set Heat Floor (floor heating sensor only)
   • Set Heat Floor (floor heating sensor only)

Temporary Hold
A 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.

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.

Display	Action
	Day temperature
	Night temperature

This thermostat can operate on a programmable schedule in order to automatically lower the room temperature setting. Options include:
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® system.
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.
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 from the temperature to the temperature. The thermostat has the option to use Optimum Start to predict the heat up rate of the room. When Optimum Start is set to On, the heating is started in advance to allow the room to reach the Set Room temperature at the time set in the programmable schedule.

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.

To activate the Away scene, touch “Going Away” on the screen.

• Select PERM (permanent) or a number of days using the or arrow. The range is 1 to 180 days.
• 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.
  Note: The temperature is not adjustable while the thermostat is in Away

Additional Scenes 
Additional energy-saving scenes are available when a User Switch or Gateway is installed. A complete listing of each scene is shown below.

Scene Number	Scenes = None Operation	Scenes = Away Operation	Scenes = All Operation	Scenes = Guest Operation
1	Permanent  orSchedule	Permanent  or Schedule	Permanent  or Schedule	Permanent
2	Scene 1	Away	Away	Away
3	Scene 1	Scene 1	Permanent	Permanent
4	Scene 1	Scene 1	Configurable	Permanent
5	Scene 1	Scene 1	Permanent  or Schedule	Permanent  or Schedule
6	Scene 1	Scene 1	Temporary  3 Hours	Permanent
7	Scene 1	Scene 1	Temporary  4 Hours	Permanent
8	Scene 1	Scene 1	Temporary  8 Hours	Permanent

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 each occupant has differing heating requirements.
• Residential Homes
  Some residential customers may not require scenes, in which case, scenes can be disabled (None). Homeowners that wish to save on energy costs should consider using the Away scene to save energy while away from the property (for example: on vacation or holidays).
  The use of the Guest scene is useful in residential applications where there are a number of spare bedrooms that are occupied on an infrequent basis. Each spare bedroom would be set up to operate on the Guest scene. The remaining thermostats can be set up to operate on the None, Away or All scene configuration. Normally, the spare bedrooms would operate at the moon temperature settings. When guests arrive, scene 5 can be activated through the use a User Switch or Gateway. The spare bedroom then operates at the temperature settings or operates on a programmable schedule if a schedule has been set up. When guests depart, the scene can be changed back to scene 1 and the spare bedrooms resume operation at the temperature settings.
• Commercial Buildings
  Commercial buildings are typically in use on a predictable schedule and normally the building can operate in scene 1. In order to accommodate staff working overtime or cleaning staff, a 3 or 8-hour temporary override is available when installed in conjunction with a User Switch or Gateway. In these cases, the thermostats should be set up to use the All scene configuration. At the touch of a button, the whole building changes from operating on a programmable schedule (typically at the temperature setting when not occupied) to operating at the temperature settings for 3 hours (scene 6) or 8 hours (scene 8). After the timer counts down and expires, the scene changes back the previous scene.

Secondary Temperature Display

This thermostat can display the outdoor or floor temperature in the upper right hand corner of the display. Touch the upper right-hand corner to toggle the item currently displayed. Display of the floor or outdoor temperature requires a connection to an outdoor or floor temperature sensor, or the thermostat is connected to a tekmarNet® system that includes an outdoor sensor. The reading of the outdoor sensor connected directly to the thermostat takes precedence over any outdoor sensor reading available on the tekmarNet® system.

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. There are two locations to lock the thermostat:

1. Locally on the back of the thermostat using the Lock switch
2. Globally on the tekmarNet® system control using the Lock switch or Access level (if installed)
   Both the local and global lock settings must be set to unlock before the thermostat access level is adjustable.
   The selection of the access level is dependent on the use of the building and the type of occupants.

• Installer – Suitable for HVAC installers only. Times out to User access level after 24 hours.
• User – Suitable for most residential homeowners.
• Limited – Suitable for rental properties or commercial buildings where some level of temperature adjustment is required.
• Secure – Suitable for schools, churches, and other public buildings where temperature adjustment is not desired.

tekmarNet® Address

When connected to a tekmarNet® system, each thermostat will be automatically given an address. The address is useful as a troubleshooting tool to locate thermostats with errors and also allows room naming on a Gateway. The address consists of the bus water temperature followed by the thermostat device number. Available buses are b (boiler), 1, 2 and 3. Device numbers range from 01 to 24. If the thermostat is used without a tekmarNet® system control, the bus number is not shown. When using the thermostat together with a Gateway, it is important that each address be changed to be manually set. This allows each thermostat to be named on the Gateway. If two thermostats are manually set to the same address, an error message will appear. The error remains until one of the addresses is manually changed to a vacant address or to Auto. It is highly recommended to keep a documented list of thermostat addresses. This is extremely helpful when troubleshooting errors. The tekmarNet® system control will display the addresses of thermostat’s that have errors. By referring to the address documentation, it simplifies the process to locate and correct error messages.

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.

Troubleshooting

Error Messages

Frequently Asked Questions

Job Record

• Job site Location
• Thermostat Location

Setup menu	Setting	Setup menu	Setting
Sensor 1		W Cycles / Hour
Sensor 2		Baseload
Room Sensor		Floor
W1 Terminal		Air Group Member
W1 Pump

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 ±0.2°C) ß=3892
– Included	None
– Optional	tekmar type # 070, 071, 072, 073, 076, 077, 078, 079, 082, 084

Warranty

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. The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s passthrough warranty which the Purchaser is authorized to pass through to its customers. Under the Limited Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The pass-through warranty period is for a period of twenty-four (24) months from the production date if the Product is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four (24) months from the production date. The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts and labor provided by tekmar to repair defects in materials and / or workmanship of the defective product; or to the exchange of the defective product for a warranty replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in contract, tort or strict product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect, special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials, including any liability for fundamental breach of contract. The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to Purchaser’s agreement and warranty with its customers.

Any representations or warranties about the Products made by Purchaser to its customers which are different from or in excess of the tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold tekmar harmless from and against any and all claims, liabilities and damages of any kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its customers.
The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications, alterations or attachments made subsequent to purchase which have not been authorized by tekmar; or if the Product was not installed in compliance with tekmar’s instructions and / or the local codes and ordinances; or if due to defective installation of the Product; or if the Product was not used in compliance with tekmar’s instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND ITS COMPLIANCE WITH OR NON-VIOLATION OF ANY APPLICABLE ENVIRONMENTAL, HEALTH OR SAFETY LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION DATE TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW.
Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tekmar Representative assigned to the territory in which such Product is located. If tekmar receives an inquiry from someone other than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers, regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact information regarding the appropriate Representative.

tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.
Head Office: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4
(250) 545-7749 Fax. (250) 545-0650
Web Site: www.tekmarcontrols.com

Product design, software and literature are Copyright © 2007 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
All specifications are subject to change without notice.
Printed in Canada. U 546 – 08/07.

REFERENCE:

DOWNLOAD MANUAL:

Tekmar D552 Touchscreen Thermostat Installational Manual

Tekmar D552 Touchscreen Thermostat Installational Manual