Tekmar 422 TEKNET – Universal Reset Module – Two tN4 – Mixing – Boiler – DHW & Setpoint

Description

Tekmar 422 TEKNET – Universal Reset Module – Two tN4 – Mixing – Boiler – DHW & Setpoint

Features:

• DHW priority (optional), expandable up to 48 zones
• Boiler protection, powered pump outputs
• Warm weather shut down, zone synchronization
• Single on/off or modulating boiler control, variable speed, or floating action mixing control
• Outdoor temperature reset, indoor temperature feedback
• System setback (with optional Timer)
• One touch overrides (with optional User Switch)
• Automatic boiler differential, Exercising
• DHW post purge, DHW control

Specifications: 

• Agency Approvals	CSA C US, CSA/UL 61010-1, meets Class B: ICES & FCC Part 15
  Ambient Conditions	Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), Max. RH 92 percent for temperatures up to 40 degrees C, 50 percent RH at greater than 40 degrees C, Altitude less than 6560 feet (2000 m), Installation Category II, Pollution Degree 2
  Boiler Relay	115 V (ac) 5 A
  Combined Load	10 A Max. (for DHW, Primary, Mixing & Var. Speed Pump)
  Control Type	Microprocessor PID control, this is not a safety (limit) control
  Demand	20-260 V (ac) / 0.1 VA at 24 V
  Dimensions	3-5/8″ H x 5-3/8″ W x 9/16″ D (92 x 137 x 14 mm)
  Enclosure Material	Does Not Apply To Product
  Enclosure NEMA Rating	Does Not Apply To Product
  Floating Action Load	24 V (ac) 8 VA Maximum
  Hydronic – HVAC Control Type	Universal Reset Module
  Modulating Output	0-10 V (dc) Minimum 2500
  Power Supply	Provided by interconnected tekmarNet Zone Manager
  Pump Relay	115 V (ac) 5 A, 1/6 hp
  Sensor	NTC thermistor, 10k 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

Installation Manual