542
Discontinued - Replaced By: 552
Part of the Thermostats Series
Ordering Code: 542
UPC: 779655054201
542 tekmarNet 2 Thermostat
The tekmarNet (R) 4 Thermostat 542 is designed to operate mechanical equipment to deliver heat to a single zone within a hydronic heating system while maintaining a programmable setback schedule. It can be used with any terminal unit type, including radiant floor, baseboard, and fan coils. It is capable of controlling a zone valve or zone pump directly or through a tekmarNet (4) 4 Wiring Center or Zone Manager to maintain air temperature and an auxiliary temperature. This temperature is typically floor, but could also be remote air. An optional Adaptor Plate 007 is available which allows the thermostat to be installed onto a single gang electrical box. Replacement options: 532 or 552.
Features
- Zone synchronization, zone post purge
- Programmable setback schedule, one touch overrides (with optional user switch)
- Auto heating cycle, tekmarNet (R) 4 communication compatible
- pulse width modulation, CSA C US approved for use in USA and Canada
| 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 Material | White PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Power Supply | 24 V (ac) plus / minus 10 percent, 60 Hz, 1.6 VA |
| Relay | W1 relay 24 V (ac) 2 A max |
| Sensor | NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta = 3892 |