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:
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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
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