Description
Tekmar 402 TEKNET - tN2 House Control - Boiler - DHW & Setpoint - Mixing - Four Zone Valves
Features:
- DHW priority (optional), setpoint operation
- Exercising, Boiler Protection
- DHW post purge, DHW control
- Outdoor temperature reset, indoor temperature feedback
- Expandable up to 48 zones, single on/off, two stage, or modulating boiler control
- Variable speed, floating action, or proportional mixing control, automatic boiler differential
- Warm weather shut down, zone synchronization
- Only requires 2 Wires Per Zone, Four 24 V (ac) powered zone outputs
- For use with tekmarNet® 2 thermostats only, tN4 expansion terminals
Specifications:
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Agency Approvals CSA C US, meets class B: ICES & FCC Part 15 Ambient Conditions Indoor use only, 32 to 104 degrees F (0 to 40 degrees C), RH less than or equal to 90 percent Non-condensing Boiler Stage1 Stage2 Relay 24 V (ac) 5 A Calls Setpoint and DHW calls, Short, 0 - 32 V (ac) Control Load 2 VA Control Type Microprocessor control, this is not a safety (limit) control Dimensions 5.5" H x 5.5" W x 2.25" D (140 x 140 x 57 mm) Enclosure Material Blue PC+ABS plastic Enclosure NEMA Rating NEMA 1 Hydronic - HVAC Control Type tN2 House Control Modulating Output Boiler modulation 0 - 10 V (dc) 500 ohms min load impedance, 4 - 20 mA 1 k ohms max load impedance Power Supply 24 V (ac) plus / minus 10 percent, 60 Hz, 100 VA max, Class 2 Pump Power 115 V (ac) 12 A max 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) 2.4 A Zone Valve - Floating Action Load 89 VA, 24 V (ac), 3.7 A for zones 1 to 4 plus floating action output
Installation Manual
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