546
Discontinued - Replaced By: 557
Part of the Thermostats Series
Ordering Code: 546
UPC: 779655054601
546 tekmarNet 2 Thermostat
The tekmarNet (R) 4 Thermostat 546 is designed to operate mechanical equipment to deliver 2 stages of heating and 2 stages of cooling 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 pumps directly or through a tekmarNet (R) 4 Wiring Center or Zone Manager, 2 cooling devices, and 2 fans while reading up to 3 auxiliary sensors. These could be floor, outdoor, duct, or remote air sensors.
Features
- Zone synchronization, zone post purge
- Programmable setback schedule, one touch overrides (with optional user switch)
- Auto heating cycle, cooling interlock
- tekmarNet (R) 4 communication compatible, requires 9 wires
| 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 | 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, 1.5 VA |
| Relay | W1, W2, Y1, Y2 relays 24 V (ac) 2 A |
| Sensor | NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta = 3892 |