tekmarNet® 4 Thermostat 545 - Two Stage Heat, One Stage Cool, One Fan
The tekmarNet® 4 Thermostat 545 is designed to operate mechanical equipment to deliver 2 stages of heating and 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® 4 Wiring Center or Zone Manager, a cooling device, and a fan, while reading up to 2 auxiliary sensors. These could be floor, outdoor, duct, or remote air sensors.
How do I purchase this product?
Contact your Local Representative for details.- Features & Specs
Features (definitions)
2 auxiliary sensor inputs
Auto Heating Cycle
Backlight
CSA C US Approved for use in USA and Canada
Cool Group Master
Cooling Interlock
Exercising
Freeze Protection
One touch overrides (with optional User Switch)
Outdoor temperature display
Programmable setback schedule
Pulse Width Modulation
Requires 9 wires
Room Temperature Limiting
Two stage Heat, one stage Cool, and Fan
Zone Post Purge
Zone Synchronization
tekmarNet® 4 communication compatible
Specifications
Control Microprocessor control. This is not a safety (limit) control Packaged weight 1.2 lb. (540 g) Dimensions 4-1/2" H x 4-3/4" W x 7/8" D (114 x 120 x 22 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 ≤80% to 88°F (31°C), down to 50% above 104°F (40°C), Altitude <6560 ft. (2000 m), Installation Category II, Pollution Degree Power supply 24 V (ac) ± 10%, 60 Hz, 1.5 VA W1 & W2 Relay(s) 24 V (ac) 2 A max Y1 & G1 relays 24 V (ac) 2 A max 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, 083, 084 Warranty Limited 3 Year Warranty - Technical
In most cases the current version of literature will work, otherwise use the piece of literature most closely matching the date code of your product.
Current Literature
Product Submittal
Jan 2011 - Present
Installation & Operation Manual
Jul 2008 - Present
Job Record
Aug 2009 - Present
User Manual
Aug 2007 - Present
Wiring Brochure
Dec 2008 - Present
- Service Bulletins
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Active Service Bulletins
RF Noise Interference
May 2009 - Present
tekmar Accessory Products (15 total)
These are typical products that add more functionality to the tekmarNet® 4 Thermostat 545
