421

Discontinued - Replaced By: 422

Part of the Boiler and Mixing Controls Series

Ordering Code: 421

UPC: 779655042101

421 Mixing Reset Module

 

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  • Outdoor temperature reset, indoor Temperature Feedback
  • Warm weather shut down, zone synchronization
  • Expandable up to 24 zones, single on /off boiler control
  • Variable speed, or floating action mixing control, automatic boiler differential
Specifications
Agency Approvals CSA C US, meets Class B: ICES & FCC Part 15
Ambient Conditions Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 80 percent to 88 degrees F (31 degrees C), down to 50 percent above 104 degrees F (40 degrees C), Altitude less than 6560 ft. (2000 m), Installation Category II, Pollution Degree
Combined Load 7.5 A max (System and Variable Speed Pump)
Control Type Microprocessor control, this is not a safety (limit) control
Demand 20 to 260 V (ac) / 0.1 VA at 24 V
Dimensions 3 5/8 IN H x 5 3/8 IN W x 9/16 IN D (92 x 137 x 14 MM)
Enclosure Material Does Not Apply To Product
Enclosure NEMA Rating Does Not Apply To Product
Floating Action Output 24 V (ac) 8 VA max
Hydronic - HVAC Control Type Mixing Reset Module
Power Supply Provided by interconnected tekmarNet Zone Manager
Pump Relay 115 V (ac) 5 A, 1/6 hp
Sensor NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892
Variable Pump 115 V (ac) 2.5 A, fuse T2.5 A 250 V