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  Tekmar Mixing Reset Module - One tN4, Mixing
Tekmar Mixing Reset Module - One tN4, Mixing
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Tekmar Mixing Reset Module - One tN4, Mixing

The Mixing Reset Module 421 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 mixed radiant with an on/off boiler to multiple radiant floor zones with an on/off boiler. This control regulates one mixed heating water temperature through Outdoor Temperature Reset and Indoor Temperature Feedback. It is capable of controlling a single on/off boiler, floating action or variable speed injection mixing, and can expand up to 24 zones in total.

Features

  • Automatic Boiler Differential
  • Boiler Protection
  • Exercising
  • Expandable up to 24 zones
  • Indoor Temperature Feedback
  • One touch overrides (with optional User Switch)
  • Outdoor Temperature Reset
  • Powered pump outputs
  • Single on /off boiler control
  • System setback (with optional timer)
  • Variable speed, or floating action mixing control
  • 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
Variable pump 115 V (ac) 2.5 A, fuse T2.5 A 250 V
Combined load 7.5 A max (System and Variable Speed Pump)
Floating action output 24 V (ac) 8 VA max
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

421_Cpdf

Installation & Operation Manual

Aug 2007 - Present

421_Dpdf

Job Record

Aug 2009 - Present

421_Jpdf

Wiring Brochure

Mar 2009 - Present

421_Wpdf

RF Noise Interference

May 2009 - Present

SB0054pdf



Part Number: 421

Quantity
Price
1$525.87
2 +$475.96


 
 
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