Tekmar T552 Net 4 Thermostat: Zone Valve/Pump Control, Sync, PWM, Setback

The TekmarNet 4 Thermostat 541 (T541) is designed to operate mechanical equipment to deliver heat to a single zone within a hydronic heating system. It is capable of controlling a zone valve or zone pump directly or through a tekmarNet 4 Wiring Center or Zone Manager to maintain air temperature. An optional Adaptor Plate 007 is available for installation onto a single gang electrical box. This product is now obsolete, please use the TekmarNet 4 Thermostat 552 (T552) as a replacement.

Features:

• Zone synchronization, zone post purge
• Auto heating cycle, tekmarNet 4 communication compatible
• Requires 4 wires, pulse width modulation
• Intelligent setback (with tekmar 033 Timer), one touch overrides (with optional user switch)

Specifications:

• Agency Approvals: CSA C US, Meets Class B: ICES & FCC Part 15
• Ambient Conditions: Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 80 percent to 88 degrees F (31 degrees C), down to 50 percent above 104 degrees F (40 degrees C), Altitude less than 6560 ft. (2000 m), Installation Category II, Pollution Degree
• Control Type: Microprocessor control, this is not a safety (limit) control
• Dimensions: 2-7/8" H x 2-7/8" W x 13/16" D (73 x 73 x 21 mm)
• Enclosure: White PVC plastic
• Power Supply: 24 V (ac) plus / minus 10 percent, 60 Hz, 1.6 VA
• Relay: G1, W1, Y1 relays 24 V (ac) 2 A
• Sensor: NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C