Shop by Product Line
R-flex
WarmWire
Underfloor Heating Mats
ThermalPro
Tekmar Controls
Miscellaneous
Mixing Controls
Mixing Valves
Sensors
Setpoint and Pump Controls
Snow Melting Controls
tekmarNet Controls
Thermostats
Manifolds
Heating System Controls
Tubing Fittings
TapeMats
Watts Onix Tubing
Watts Radiant RadiantPERT Coil
Coil Watts Radiant BarrierPEX+
SlabHeat
Nibco Barrier PEX
Nibco Dura Pex
Tubing Clips & Ties
  Tekmar tN4 Boiler Reset Module - One tN4, Boiler, DHW & Setpoint
Tekmar tN4 Boiler Reset Module - One tN4, Boiler, DHW & Setpoint
Click to enlarge

Tekmar tN4 Boiler Reset Module - One tN4, Boiler, DHW & Setpoint

The Boiler Reset Module 420 is designed to operate all of the mechanical equipment in a hydronic heating system, except for zones, coordinating their operation through network communication. It can be used in applications ranging from a single zone of baseboard with an on/off boiler, to multiple radiant floor zones with a modulating/condensing boiler. This control regulates one space heating water temperature through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off or modulating boiler, Domestic Hot Water, setpoint loads, and can expand up to 24 zones in total.

Features

  • Automatic Boiler Differential
  • Boiler Protection
  • DHW Post Purge
  • DHW Priority (optional)
  • DHW control
  • Exercising
  • Indoor Temperature Feedback
  • One touch overrides (with optional User Switch)
  • Outdoor Temperature Reset
  • Powered pump outputs
  • Setpoint operation
  • Single on/off, or modulating boiler control
  • System Setback (with optional Timer)
  • System control for up to 24 zones
  • Warm Weather Shut Down
  • Zone Synchronization

Specifications

Control Microprocessor control. This is not a safety (limit) control
Packaged weight 1.6 lb. (730 g)
Dimensions 3-5/8" H x 5-3/8" W x 9/16" D (92 x 137 x 14 mm)
Approvals CSA C US, meets Class B: ICES & FCC Part 15
Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C), RH ≤80% to 88°F (31°C), down to 50% above 104°F (40°C), Altitude <6560 ft. (2000 m), Installation Category II, Pollution Degree
Power supply Provided by interconnected tekmarNet Zone Manager
Pump relays 115 V (ac) 5 A, 1/6 hp
Combined load 10 A max (for DHW and Primary Pump)
DHW zone valve 24 V (ac) 8 VA max
Modulation output 0-10 V (dc) minimum 2500 Ω
Boiler relay 115 V (ac) 5 A, 1/6 hp
Demands 20 to 260 V (ac) / 0.1 VA @ 24 V
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
-Included Outdoor Sensor 070 and Universal Sensor 082
Warranty Limited 3 Year Warranty

Current Literature

Product Submittal

Jan 2011 - Present

420_Cpdf

Installation & Operation Manual

Aug 2007 - Present

420_Dpdf

Job Record

Aug 2009 - Present

420_Jpdf

Wiring Brochure

Mar 2009 - Present

420_Wpdf

Installing tN4 Reset Modules 420, 422 and 423 with Modulating Boilers

Mar 2011 - Present

SB0067pdf

RF Noise Interference

May 2009 - Present

SB0054pdf



Part Number: 420

Quantity
Price
1$473.66
2 +$439.52


 
 
Tell a Friend