Tekmar 540 Thermostat TekmarNet 4 One Stage Heat, One Stage Cool, One Fan

Description

The tekmarNet
4 Thermostat 540 is designed to operate a single stage of heating, cooling, and fan within a residential heating and cooling system. It can be used with any terminal unit type, including radiant floor, baseboard, and fan coils. It is capable of controlling the heating device using a zone valve or zone pump through a tekmarNet
4 Wiring Center, Zone Manager or directly from the thermostat. An optional Adaptor Plate 007 is available which allows the thermostat to be installed onto a single gang electrical box.
Features
Air Group control
Auto Heating Cycle
Backlight
CSA C US Approved for use in USA and Canada
Cooling Interlock
Exercising
Freeze Protection
Hydronic Cooling
Intelligent setback (with tekmar 033 timer)
One stage heat, cool, and fan
One touch overrides (with optional User Switch)
Outdoor temperature display
Pulse Width Modulation
Requires 7 wires
Room Temperature Limiting
Zone Post Purge
Zone Synchronization
tekmarNet
®
4 communication compatible
Specifications
Control
Microprocessor control. This is not a safety (limit) control
Packaged weight
0.8 lb. (380 g)
Dimensions
2-7/8" H x 2-7/8" W x 13/16" D (73 x 73 x 21 mm)
Enclosure
White PVC plastic, NEMA type 1
Approvals
CSA C US, meets Class B: ICES & FCC Part 15
Ambient conditions
Indoor use only, 32 to 122°F (0 to 50°C), RH ≤92% to 104°F (40°C), and 50% above 104°F (40°C), Altitude <9840 ft. (3000 m), 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
Y relay
24 V (ac) 2 A
G relay
24 V (ac) 2 A