tekmarNet® 4 Thermostat 538 - One Stage Heat
The tekmarNet® 4 Thermostat 538 is designed to operate mechanical equipment to deliver heat to a single zone within a hydronic heating system. It can be used with any terminal unit type, including radiant floor, baseboard, and fan coils. It is capable of controlling a zone valve or zone pump through a tekmarNet® 4 Wiring Center, Zone Manager, or directly from the thermostat in order to maintain air and an auxiliary temperature. That is typically a floor temperature, but could also be a remote air sensor.
How do I purchase this product?
Contact your Local Representative for details.- Features & Specs
Features (definitions)
1 Auxiliary sensor input
Air Group member
Auto Heating Cycle
Backlight
CSA C US Approved for use in USA and Canada
Exercising
Floor warming (with 079 slab sensor)
Freeze Protection
Intelligent setback (with tekmar 033 timer)
One touch overrides (with optional User Switch)
Outdoor temperature display
Pulse Width Modulation
Requires 4 wires
Room Temperature Limiting
Supports Radiant Floor Cooling
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 ±10%, 50/60 Hz, 1.8 VA Standby, 56 VA fully loaded, NEC / CEC Class 2 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, 072, 073, 076, 077, 079, 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
Nov 2011 - Present (2011 products and newer)
Installation & Operation Manual
Nov 2011 - Present (2011 products and newer)
Quick Setup Guide
Nov 2011 - Present (2011 products and newer)
User Manual
Nov 2011 - Present (2011 products and newer)
Wiring Brochure
Dec 2008 - Present
Archived Literature
Product Submittal
Jan 2011 - Nov 2011 (pre 2011 products)
Installation & Operation Manual
Aug 2010 - Nov 2011 (pre 2011 products)
Installation & Operation Manual
Jan 2009 - Aug 2010 (pre 08/10, four button models)
Job Record
Aug 2009 - Present
Quick Setup Guide
Aug 2010 - Nov 2011 (pre 2011 products)
User Manual
Aug 2010 - Nov 2011 (pre 2011 products)
tekmar Accessory Products (14 total)
These are typical products that add more functionality to the tekmarNet® 4 Thermostat 538
