Tekmar 400 Submittal

Tekmar 400 Installation & Operation Manual

Tekmar 400 Quick Setup Guide

Tekmar 400 - tekmarNet® 2 House Control, Boiler, DHW and Setpoint, Four Zone Valves

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, two stage, or modulating boiler, Domestic Hot Water, setpoint loads, 4 on-board zone valves, and can expand up to 24 zones in total.

Features:

For use with tekmarNet® 2 thermostats only, tN4 expansion terminals
Warm weather shut down, zone synchronization
Exercising, boiler protection
Only requires 2 Wires Per Zone, Four 24 V (ac) powered zone outputs
Outdoor temperature reset, indoor temperature feedback
Setpoint operation, automatic boiler differential
Powered pump outputs, System Setback (with optional Timer)
DHW control, DHW priority (optional)
DHW post purge, single on/off, two stage, or modulating boiler control

Specifications:

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
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 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

PKZ2100425

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Tekmar 400 - tekmarNet 2 House Control, Boiler, DHW and Setpoint, Four Zone Valves

090 - Snow/Ice Sensor, In-slab, 65 Ft Wire