543
Discontinued - Replaced By: 553
Part of the Thermostats Series
Ordering Code: 543
UPC: 779655054301
543 tekmarNet 2 Thermostat
The tekmarNet (R) 4 Thermostat 543 is designed to operate mechanical equipment to deliver 2 stages of 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, fan coils, and non-hydronic sources. This product is capable of controlling 2 zone valves or zone pumps directly or through a tekmarNet (R) 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.
Features
- Zone synchronization, zone post purge
- Programmable setback schedule, one touch overrides (with optional user switch)
- Auto heating cycle, tekmarNet (R) 4 communication compatible
- Requires 8 wires, pulse width modulation
| Specifications | |
|---|---|
| Agency Approvals | CSA C US, CSA/UL 61010-1, meets Class B: ICES & FCC Part 15 |
| Ambient Conditions | Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH 80 percent to 88 degrees F (31 degrees C), down to 50 percent from 104 to 122 degrees F (40 to 50 degrees C), Altitude less than 6560 feet (2000 m), Installation Category II, Pollution |
| Control Type | Microprocessor PID control, this is not a safety (limit) control |
| Dimensions | 4-1/2" H x 4-3/4" W x 7/8" D (114 x 120 x 22 mm) |
| Enclosure Material | White PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Power Supply | 24 V (ac) plus / minus 10 percent 60 Hz, 2.5 VA, NEC / CEC Class 2 |
| Relay | W1, W2 relays 24 V (ac) 2 A |
| Sensor | NTC thermistor, 10 k at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta = 3892 |