Description

Tekmar 557 TekmarNet Thermostat - Radiant Floor - 2 Heat Pump/Cool - Backup - Humidity
Features:
- Optimum start, scenes
 - Radiant floor heating and cooling, outdoor and floor temperature display
 - Daylight savings time, backlight
 - Zone post purge, programmable schedule
 - Air group master, network schedule master or member
 - Auto heating cycle, tekmarNet® communication compatible
 - Temporary hold, away scene key
 - Warm weather shut down, zone synchronization
 - Touchscreen technology, 3 Auxiliary sensor inputs
 
Specifications:
| Agency Approvals | 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 90 percent non-condensing | 
| 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 | 
| Environmental Notice | Compatible with chlorinated swimming pool environments. Do not use in presence of ammonia (animal barns), methanol, ethanol, acetone. | 
| Humidity Sensor | 0 to 90 percent plus / minus 3 percent RH | 
| Power Supply | 24 V plus / minus 10 percent, 60 Hz, 2 VA standby, NEC / CEC Class 2 | 
| Relay | 24 V (ac) 2A , 0-10 V (dc) Output | 
| Temperature Sensor | NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta = 3892 | 
| Zoning - Thermostat Type | tekmarNet Thermostat | 
Installation Manual
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