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© 2011
D 538 - 12/11
Technical Data
tekmarNet
®
4 Thermostat 538;
One Stage Heat
Packaged weight
0.8 lb. (380 g)
Enclosure
White PVC plastic, NEMA Type 1
Dimensions
2-7/8” H x 2-7/8” W x 13/16” D (73 x 73 x 21 mm)
Approvals
CSA C US, meets Class B: ICES and FCC Part 15
Ambient conditions
Indoor use only, 32 to 122°F (0 to 50°C).
RH max 92% to 104°F (40°C), and 50% above 104°F
(40°C)
Altitude <9840 feet (3000 m), Installation Category II,
Pollution Degree 2
Power supply
24 V (ac) ± 10% 50/60 Hz, 1.8 VA Standby, 56 VA fully
loaded, NEC / CEC Class 2
W Relay
24 V (ac) 2 A
Sensors:
NTC thermistor, 10 kΩ @ 77°F (25°C ± 0.2°C) ß = 3892
– Optional
tekmar type # 070, 072, 073, 076, 077, 079, 084
Job Record
Jobsite Location ________________________________________________
Thermostat Location _____________________________________________
Item
Setting
Item
Setting
Set Room Heat
Set Floor Min
Set Room Heat
Set Floor Max
Set Room Heat Away
Schedule Member
Set Floor Heat
Heat Supply Pump
Set Floor Heat
Heat Supply Pump Delay
Backlight
Heat Cycles Per Hour
Units
Air Group
Max Set Room Heat
Room Sensor
Max Set Room Heat
Sensor
Min Set Room Heat
tekmarNet
®
Address
Set Floor Min
Floor Cooling
