tekmar 552 Thermostat Installation - Manual (Page 43)

© 2014 552_D - 09/14
43 of 44 A Watts Water Technologies Company
Technical Data
tekmarNet ® Thermostat 552; One Stage Heat
Packaged weight 0.8 lb. (350 g)
Enclosure White ABS / PC plastic
Dimensions 5” H x 3-1/4” W x 15/16” D (127 x 82 x 23 mm)
Approvals Meets Class B: ICES & FCC Part 15
Ambient conditions
Indoor use only, 32 to 122°F (0 to 50°C),
RH ≤90% non-condensing
Power supply
24 V ±10%, 50/60 Hz, 1.8 VA Standby, 56 VA fully loaded, NEC
/ CEC Class 2
W1 Relay 24 V (ac) 2 A
Sensors: NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
– Included None
– Optional tekmar type # 070, 071, 072, 073, 076, 077, 078, 079, 082, 084