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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 © 2011 by:
tekmar Control Systems Ltd. and tekmar
Control Systems, Inc.

All specifications are subject
to change without notice

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D 538 - 12/11.

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 pass-
through 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 war-
ranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defec-
tive 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 instruc-
tions.

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 WAR-
RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIP-
TION 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 LIM-
ITED 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 materi-

als 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.

Limited Warranty and Product Return Procedure

Summary of Contents for D538

Page 1: ...zation Zone Post Purge Intelligent setback Timer 033 Scenes Away override Auto Heating Cycle tekmarNet 4 communication compatible Requires 4 wires Pulse Width Modulation CSA C US Approved for use in U...

Page 2: ...ng the Thermostat Wiring 4 Mounting the Thermostat 5 Cleaning the Thermostat 6 Switch Settings 6 User Interface 7 Display 7 Button Operation 7 Symbols Description 7 Settings 8 14 Sequence of Operation...

Page 3: ...ire is 500 feet 150 m Strip wire to 3 8 10 mm for all terminal connections Use standard 4 conductor 18 AWG wire Installation Location Removing The Thermostat Base Push tab 1 Remove thermostat from bas...

Page 4: ...anager Connect the optional auxiliary sensor wires to the sensor terminals 5 and 6 1 2 3 4 tN4 Wiring Center or tN4 Zone Manager Slab Sensor 072 073 079 OR Outdoor Sensor 070 OR Indoor Sensor 076 077...

Page 5: ...should appear on the display 6 There should be continuity between the R 3 and W 4 terminals Testing the tekmarNet 4 Bus The symbol is shown on the display when communication is present If the thermost...

Page 6: ...back schedule as a schedule member if available Requires the installation of a Timer 033 to use this feature OFF OFF The thermostat does not follow a programmable setback schedule 2 ON SCENE The therm...

Page 7: ...GROUP The air group is cooling Heating can start once the cooling is finished LOCK Locked to User access level CLOCK Operating on a programmable schedule tekmarNet Communication is present WARNING SYM...

Page 8: ...ler SET ROOM HEAT AWAY Set the room heating temperature while in the Away scene Continued on next page Press and hold down both the and buttons for 2 seconds to change from one step to the next Releas...

Page 9: ...ng in the Adjust menu is set to Off 40 to 122 F 4 5 to 50 0 C Default 65 F 18 5 C Installer User SET FLOOR HEAT Set the floor heating temperature while in the event Available when A slab sensor is ins...

Page 10: ...rge number with Software Version upper right corner and the thermostat address 40 to 95 F 4 5 to 35 0 C Default 85 F 29 5 C Installer MAXIMUM SET ROOM HEAT Set the maximum room heating limit while in...

Page 11: ...n AND A slab sensor is installed on the auxiliary sensor input AND Sensor setting in the Adjust menu is set to Floor Off 40 to 122 F Off 4 5 to 50 0 C Default Off Installer User SET FLOOR MINIMUM Set...

Page 12: ...liary sensor input AND Sensor setting in the Adjust menu is set to Floor 1 2 3 4 Default 1 Installer SCHEDULE Thermostat can follow schedule master 1 2 3 or 4 Available when Switch setting 1 is set to...

Page 13: ...e tekmarNet system Choose Synchronize when zone heated using a boiler Choose Auto when zone is non hydronic heating Available when No reset control on the tekmarNet system ADJUST ADJUST OFF 1 to 16 In...

Page 14: ...t control mixing Installer tekmarNet ADDRESS The address is shown in the large number field Auto is shown in the upper number field when using automatic addressing Press the or the button to manually...

Page 15: ...the thermostat is heating The heat can cycle on and off within 1 5 F 1 C of the Set Room Heat temperature Freeze Protection The thermostat operates the heat whenever the room or floor temperature fall...

Page 16: ...r the group This thermostat can be set to be a member of the air group When operating as an air group the air temperature readings of all the air group member thermostats are communicated to the air g...

Page 17: ...e Display Room Temperature Setting 1 or or Follows programmable schedule or operates at the occupied temperature 2 Away Away temperature 3 Unoccupied temperature Scenes System Override Section E When...

Page 18: ...d BUS ERROR The tekmarNet 4 communication bus has either an open or a short circuit The result is that there are no communications Check for loose wires Check for short circuits between the tN4 and C...

Page 19: ...hort circuit error This error cannot be field repaired Contact your wholesaler or tekmar sales representative for details on repair procedures ROOM SENSOR OPEN CIRCUIT The built in air temperature sen...

Page 20: ...nsor was intentionally removed locate the Room Sensor setting in the Adjust menu and set to On Power the thermostat down and up to clear the error OUTDOOR SENSOR SHORT CIRCUIT The auxiliary outdoor se...

Page 21: ...clears after the auxiliary room sensor fault is corrected AUXILIARY ROOM SENSOR OPEN CIRCUIT The auxiliary room sensor has an open circuit Check for loose or damaged wires Locate and repair the proble...

Page 22: ...arly so that the room is comfortable at the scheduled time Pressing button does not increase temperature Flashing Max Installer can increase the Maximum Set Room Heat Flashing Floor Max Floor temperat...

Page 23: ...z 1 8 VA Standby 56 VA fully loaded NEC CEC Class 2 W Relay 24 V ac 2 A Sensors NTC thermistor 10 k 77 F 25 C 0 2 C 3892 Optional tekmar type 070 072 073 076 077 079 084 Job Record Jobsite Location __...

Page 24: ...s not cover the cost of the parts or labor to remove or transport the defec tive Product or to reinstall the repaired or replacement Product all such costs and expenses being subject to Purchaser s ag...

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