Tekmar® 400 ERP_075020

The tekmarNet 2 house control 400 is designed to operate all of the mechanical equipment in a residential hydronic heating system, coordinating their operation with network communication. It can be used in applications ranging from a single zone of baseboard with an on/off boiler, to multiple radiant floor zones with a modulating/condensing boiler. This control regulates one space heating water temperature through outdoor temperature reset and indoor temperature feedback. It is capable of controlling a single on/off, 2-stage, or modulating boiler, domestic hot water, setpoint loads, 4 on-board zone valves, and can expand up to 24 zones in total.

Tekmar® House Controller, 24 VAC, 60 Hz Power Supply, 2 V-A VA, NTC Thermistor Sensor, 4 -Zone, 32 - 104 deg F Control, 0 - 10 VDC, 500 ohm Minimum Load Impedance, 4 - 20 mA, 1 kohm Maximum Load Impedance Boiler Output, NEMA 1 Enclosure, 115 VAC, 5 A, 1/6 hp Pump Relay Rating, PC/ABS Plastic, Blue, 5-1/2 in W x 5-1/2 in H x 2-1/4 in D

• Automatic boiler differential
• Boiler Protection
• DHW Post Purge
• DHW control
• Indoor Temperature Feedback
• Only requires 2 Wires Per Zone
• Outdoor temperature reset
• Powered pump outputs
• Setpoint operation
• Single on/off, two stage, or modulating boiler control
• Warm weather shut down
• Zone synchronization
• Microprocessor control
• 89 V-A, 24 VAC, 3.7 A for zones 1 to 4 zone valve load
• 24 VAC 5 A 1, 2 relays boiler stage
• 0 - 32 VAC short setpoint and DHW calls
• Included outdoor sensor 070 and universal sensor 082
• Setpoint and DHW calls Short, 0 - 32 VAC

• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/Tekmar_400_Manual.pdf
• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/Tekmar_400_Specification_Sheet.pdf