Hydronic & HVAC Control Systems
Better Design, Better Control, Better Systems.
tekmar Control Systems focuses on indoor comfort, performance, efficiency, and system performance for heating, ventilating, and air conditioning (HVAC) systems. The company emphasizes innovation, technical support, and a dependable 3-year limited warranty.
tekmar offers affordable control solutions designed to produce the best in comfort, efficiency, and system performance. They provide in-depth technical support and training to ensure customer satisfaction.
For more information, visit tekmarControls.com.
Thermostats
Classic Series
Operate stand-alone & WiFi thermostats in an on/off hydronic heating zone for energy savings and indoor comfort.
- Thermostat 518: One Stage Heat. Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar Thermostat 518)
- Radiant Thermostat 519: One Stage Heat (Includes Slab Sensor 079). Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar Radiant Thermostat 519)
- Programmable Thermostat 521: Two Heat or Heat-Cool (Includes Slab Sensor 079). Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar Programmable Thermostat 521)
- WiFi Thermostat 561: One Stage Heat. Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar WiFi Thermostat 561)
- WiFi Thermostat 562: Two Stage Heat, One Stage Cool, Fan. Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar WiFi Thermostat 562)
- WiFi Thermostat 563: Conventional 2H/2C or Heat Pump 4H/2C. Auxiliary Sensor Options: Room, Floor, Outdoor, Humidity. (Image: tekmar WiFi Thermostat 563)
- Invita® WiFi Thermostat 564: Solves the 2-wire problem. White finish. Auxiliary Sensor Options: Room, Floor, Outdoor, Humidity. (Image: tekmar Invita WiFi Thermostat 564)
Performance & Designer Series
Use tekmarNet® communication between thermostats and the system control for optimized energy savings and comfort.
- tekmarNet® Thermostat 532: One Stage Heat. Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar tekmarNet Thermostat 532)
- tekmarNet® Thermostat 552: One Stage Heat. Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar tekmarNet Thermostat 552)
- tekmarNet® Thermostat 553: Two Stage Heat, One Stage Cool, Fan. Auxiliary Sensor Options: Room, Floor, Outdoor, Duct, Coil. (Image: tekmar tekmarNet Thermostat 553)
- tekmarNet® Thermostat 554: One Stage Heat, One Stage Cool, One Fan. Auxiliary Sensor Options: Room, Floor, Outdoor. (Image: tekmar tekmarNet Thermostat 554)
- tekmarNet® Thermostat 557: Radiant Floor, 2 Heat Pump/Cool, Backup, Humidity. Auxiliary Sensor Options: Room, Floor, Outdoor, Duct, Coil, Humidity. (Image: tekmar tekmarNet Thermostat 557)
Thermostat Comparison Highlights
Key system requirements and features include heat/cool stages, auxiliary sensor inputs (Outdoor, Room, Floor, Duct, Coil, Humidity), tekmarNet® communication (2 or 4 wire), and benefits like programmable schedules, touchscreen technology, mobile app access, and voice command compatibility.
Zoning
Classic Series
Switching Relays and Zone Valve Controls for on/off hydronic heating zones.
- Switching Relay 301P: One Zone. Auxiliary Sensor Options: None. (Image: tekmar 301P Switching Relay)
- Switching Relay 302P: Two Zones with Priority. Auxiliary Sensor Options: None.
- Switching Relay 303P: Three Zones with Priority. Auxiliary Sensor Options: None.
- Switching Relay 304P: Four Zones with Priority. Auxiliary Sensor Options: None.
- Switching Relay 306P: Six Zones with Priority. Auxiliary Sensor Options: None.
- Zone Valve Control 303V: Three Zones with Priority. Auxiliary Sensor Options: None.
- Zone Valve Control 304V: Four Zones with Priority. Auxiliary Sensor Options: None.
- Zone Valve Control 305V: Five Zones with Priority. Auxiliary Sensor Options: None.
- Zone Valve Control 306V: Six Zones with Priority. Auxiliary Sensor Options: None.
Performance Series
Utilizes tekmarNet® communication for thermostats and system control.
- tN2 Wiring Center 313: Four Zone Valves. Auxiliary Sensor Options: Outdoor. (Image: tekmar tN2 Wiring Center 313)
- tN2 Wiring Center 314: Four Zone Pumps. Auxiliary Sensor Options: Outdoor. (Image: tekmar tN2 Wiring Center 314)
- tN4 Wiring Center 315: Six Zone Valves. Auxiliary Sensor Options: None. (Image: tekmar tN4 Wiring Center 315)
- tN4 Wiring Center 316: Four Zone Pumps. Auxiliary Sensor Options: None. (Image: tekmar tN4 Wiring Center 316)
Designer Series
Offers advanced features for air and hydronic applications.
- tN4 Zone Expansion Module 325: Six Zone Valves. Auxiliary Sensor Options: None. (Image: tekmar tN4 Zone Expansion Module 325)
- Zone Expansion Module 326: Three Zone Pumps. Auxiliary Sensor Options: None.
- tN4 Zone Manager 335: Six Zone Valves. Auxiliary Sensor Options: None. (Image: tekmar tN4 Zone Manager 335)
- tN4 Zone Manager 336: Four Zone Pumps. Auxiliary Sensor Options: None.
- tN2 Zone Expansion Module 324: Four Zones, Cooling & Fan. Auxiliary Sensor Options: None. (Image: tekmar tN2 Zone Expansion Module 324)
- tN2 Zone Manager 334: Four Zones, Cooling & Fan. Auxiliary Sensor Options: None. (Image: tekmar tN2 Zone Manager 334)
Zoning Comparison Highlights
Key features include tekmarNet® communication, zone control capabilities (valves/pumps), RoomResponse™, built-in end switches, zone group pumps, remote manifold wiring, thermostat compatibility, and built-in transformers.
Boiler & Mixing Controls
Classic Control Series
Operate hydronic heating equipment with outdoor temperature reset for energy savings and comfort.
- Boiler Control 256: One Stage Boiler. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 071. (Image: tekmar Boiler Control 256)
- Boiler Control 260: One Stage Boiler & DHW. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar Boiler Control 260)
- Boiler Control 261: Two Stage Boiler & Setpoint. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar Boiler Control 261)
- Mixing Control 356: Variable Speed. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 071. (Image: tekmar Mixing Control 356)
- Mixing Control 360: Floating Action. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar Mixing Control 360)
- Mixing Control 361: Variable Speed. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar Mixing Control 361)
- Universal Reset Control 374: Two Mixing, Two Stage Boiler, DHW & Setpoint. Included: 1 x Outdoor Sensor 070, 3 x Universal Sensor 082. (Image: tekmar Universal Reset Control 374)
Performance Control Series
Utilizes tekmarNet® communication for thermostats and system control.
- tN2 House Control 400: Boiler, DHW & Setpoint, Four Zone Valves. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar tN2 House Control 400)
- tN2 House Control 401: Boiler, DHW & Setpoint, Four Zone Pumps. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar tN2 House Control 401)
- tN2 House Control 402: Boiler, DHW & Setpoint, Mixing, Four Zone Valves. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar tN2 House Control 402)
- tN2 House Control 403: Boiler, DHW & Setpoint, Mixing, Four Zone Pumps. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar tN2 House Control 403)
Designer Control Series
Supports greater flexibility in advanced multiple boiler & mixing water temperature applications.
- Universal Reset Module 422: Two tN4, Mixing, Boiler, DHW & Setpoint. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar Universal Reset Module 422)
- Universal Reset Module 423: Four tN4, Two Boiler, DHW & Setpoint. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar Universal Reset Module 423)
- Mixing Expansion Module 444: Variable Speed / Floating Action / Modulating. Included: 1 x Universal Sensor 082. (Image: tekmar Mixing Expansion Module 444)
- Power Manager 346: Three Auxiliary Pumps, Four Demands. Included: None. (Image: tekmar Power Manager 346)
Boiler & Mixing Comparison Highlights
Features include Outdoor Temperature Reset, Warm Weather Shut Down, Automatic Differential, Boiler Return Protection, DHW Priority, Pump Exercising, tekmarNet® Communication, and compatibility with various boiler types and communication protocols.
Multi-Staging
Classic Series
Stages multiple heat sources for hydronic heating and domestic hot water generation with outdoor temperature reset.
- Pump Sequencer 132: Stand-by / 2-Stage. Included: None. (Image: tekmar Pump Sequencer 132)
Performance Series
Uses tekmarNet® communication for staging, system optimization, and remote monitoring.
- Smart Steam Control 289: Two Boiler, DHW, Web/Mobile App Notification. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 071. (Image: tekmar Smart Steam Control 289)
- Smart Boiler Control 294: One tN4, Four Boiler, DHW, Setpoint, Web/Mobile App Notification. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar Smart Boiler Control 294)
- Smart Boiler Expansion 294EXP: Expands Smart Boiler Control 294 for up to sixteen boilers.
Designer Series
Offers flexible and efficient boiler plant solutions with remote monitoring via BACnet®, Modbus®, or tekmarNet®.
- Boiler Control 284: Four tN4, BAS, Four Boiler, DHW & Setpoint. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar Boiler Control 284)
Multi-Staging Comparison Highlights
Features include system requirements for stage counts (1-4), boiler types (On/Off, Modulating), DHW operation, setpoint operation, and benefits like Outdoor Temperature Reset, Automatic Differential, Indirect DHW Priority, Pump Exercising, and tekmarNet® Communication.
Snow Melting
Snow Melting Performance Series
tekmarNet® communication provides zoning and remote access for snow melting systems.
- Snow Melting Control 654: tekmarNet® Electric or Hydronic Boiler / Mixing. Included: 1 x Outdoor Sensor 070, 1 x Universal Sensor 082. (Image: tekmar Snow Melting Control 654)
- WiFi Snow Melting Control 670: Boiler & Mixing / Electric. Included: 1 x Outdoor Sensor 070, 2 x Universal Sensor 082. (Image: tekmar WiFi Snow Melting Control 670)
- WiFi Snow Melting Control 671: Pulse Width Modulation. Included: 1 x Outdoor Sensor 070. (Image: tekmar WiFi Snow Melting Control 671)
Snow Melting Designer Series
Remote monitoring and adjustment via BACnet® or Modbus®.
- Snow Melting Control 680: BAS, Boiler & Mixing. Included: 1 x Outdoor Sensor 070, 3 x Universal Sensor 082. (Image: tekmar Snow Melting Control 680)
- BACnet Snow/Ice Sensor Interface 681: None. (Image: tekmar BACnet Snow/Ice Sensor Interface 681)
Snow Melting Accessories
Ensure efficient operation with automatic snow and ice detection and slab temperature control.
- Slab Sensor 072: 20 ft. (6 m) wire.
- Slab Sensor 073: 40 ft. (12 m) wire.
- Snow / Ice Sensor 090: In-slab 65 ft. (20 m) Wire.
- Snow / Ice Sensor 094: In-slab 208 ft. (63 m) Wire.
- Snow / Ice Sensor Socket 091.
- Snow Sensor 095: Aerial Mounting.
- Leveling Shim Kit 096: (2) 1/8 inch shims and (1) 1/4 inch shim.
- Spare Socket Cover Plate 097.
Snow Melting Comparison Highlights
Features include Automatic Snow/Ice Detection, Slab Outdoor Reset, Slab Protection, tekmarNet® Communication, Remote Enable, Tandem Snow/Ice Detection, Melting Setpoint, Idling Setpoint, Storm or Temporary Idle, Warm Weather Shut Down, Cold Weather Cut Out, and Programmable Schedule.
Setpoint
Classic Series
Operate mechanical equipment to maintain fixed heating or cooling temperature at the sensor location.
- One Stage Setpoint Control 150: Included: 1 x Universal Sensor 071. (Image: tekmar One Stage Setpoint Control 150)
- Two Stage Setpoint Control 152: Included: 1 x Universal Sensor 071. (Image: tekmar Two Stage Setpoint Control 152)
- Mixing Setpoint Control 153: Floating Action. Included: 1 x Universal Sensor 071. (Image: tekmar Mixing Setpoint Control 153)
- WDHW Control 257: Two Stage. Included: 1 x Universal Sensor 082. (Image: tekmar WDHW Control 257)
- WiFi Setpoint Control 170: One Stage Heat or One Stage Cool. Included: 1 x Universal Sensor 071. (Image: tekmar WiFi Setpoint Control 170)
Setpoint Comparison Highlights
Features include Heat Stages, Cool Stages, Floating Action Mixing Output, Adjustable Differential, Pulse Width Modulation, and Equal Run Time Rotation.
Alternative Energy
Classic Series
Stand-alone controls for solar thermal systems.
- Difference Setpoint Control 156: On / Off. Included: 1 x Universal Sensor 071, 1 x Solar Sensor 085. (Image: tekmar Difference Setpoint Control 156)
Performance Series
Uses tekmarNet® communication for energy usage optimization and system component coordination.
- tN2 House Control 406: Heat Pump & Backup, Four Zone Valves. Included: 1 x Outdoor Sensor 070, 4 x Universal Sensor 082. (Image: tekmar tN2 House Control 406)
Alternative Energy Comparison Highlights
Features include Heat pump applications, Solar thermal applications, tekmarNet® communication, Complete HVAC system control, and Outdoor Temperature Reset with Indoor Temperature Feedback.
Accessories
Valves & Actuators
- 3-Way Mixing Valves: 710 (3/4" Brass), 711 (1" Brass), 712 (1 1/4" Brass), 713 (1 1/2" Brass), 714 (2" Brass). (Performance graphs provided for 710-714 showing flow rate vs. head pressure).
- 4-Way Mixing Valves: 720 (3/4" Brass), 721 (1" Brass), 722 (1 1/4" Brass), 723 (1 1/2" Brass), 724 (2" Brass). (Performance graphs provided for 720-724 showing flow rate vs. head pressure).
- Actuating Motor 742: 0-10 V (dc). (Image: tekmar Actuating Motor 742)
- Actuating Motor 743: Floating Action. (Image: tekmar Actuating Motor 743)
Timers & Remote Access
- tN4 User Switch 480: Three Inputs. (Image: tekmar tN4 User Switch 480)
- tN4 Gateway 482: RS232 (for Home Automation Systems). (Image: tekmar tN4 Gateway 482)
- tekmarNet Gateway 486: Cloud Connectivity with Web & Mobile App. (Image: tekmar tekmarNet Gateway 486)
Sensors
A wide range of sensors are available for various applications:
- Boiler Flue Sensor 069
- Outdoor Sensor 070
- Universal Sensor 071
- Slab Sensors 072, 073
- Indoor Sensors 076, 077
- Universal Sensor 078
- Slab Sensor 079
- Universal Sensor Enclosure 080
- Three Outdoor Sensor Module 081
- Universal Sensor 082
- Duct Sensor 083
- Indoor Sensor 084
- Solar Sensor 085
- Humidity & Temperature Sensor 086
- Wireless Outdoor Sensor 087
- Pressure Sensors 088, 089
- Snow / Ice Sensors 090, 094
- Snow / Ice Sensor Socket 091
- Snow Sensor 095
- Leveling Shim Kit 096
- Spare Socket Cover Plate 097
Miscellaneous
- 10K Temperature Simulator 002
- Relays 003, 004
- 0-135 Ohm Converter 005
- Adaptor Plates 007, 012
- 24 V (ac) Transformers 009, 009K, 013
- Wall Plate Trim 014
- Replacement 40 VA Transformer M3069
Replacement Parts
Includes seal kits, valve handle kits, shear pins, fuses, O-ring kits, mixing valve adapter kits, actuators, and DIN snap kits.
Applications & Connectivity
- Watts® Home: Provides remote access and notification for tekmar WiFi Thermostats, Setpoint Controls, and Snow Melting Controls for residential applications. Features include location organization, dashboard display, programmable schedules, and energy usage graphs.
- Nexa™: Offers remote monitoring and notification for tekmar smart and connected products via mobile app and web. Features include email/SMS/push notifications, location organization, and configuration access.
- tekmarNet®: Provides remote access for tekmarNet Thermostats and System Controls via the tekmarNet Gateway 486 for high-end residential systems. Features include remote control of up to 96 thermostats, visualizations, data graphing, and error notifications.
For more information, visit tekmarControls.com and watch tekmar videos on YouTube.
Rely on the experts for all of your HVAC control needs. tekmar products are designed to add comfort, convenience, safety, and reliability to homes and commercial buildings.
