Boiler Control 275 - One tN4, Four Modulating Boiler & DHW / Setpoint
The Boiler Control 275 is designed to stage up to four condensing or non-condensing, modulating or on-off boilers using P.I.D. staging to accurately maintain temperature. Water temperature is controlled by Outdoor Temperature Reset for space heating applications or a fixed setpoint for Domestic Hot Water (DHW) tank heating or industrial process heating applications. The control will also accept an analog 0-10 V (dc) signal from an Energy Management System (EMS) to control the water temperature. Boiler Equal Run Time Rotation, pump exercising and stand-by system pump operation increase boiler plant reliability. The control is tekmarNet® communication compatible allowing for internet connectivity using an optional Gateway 483.
How do I purchase this product?
Contact your Local Representative for details.- Features & Specs
Features (definitions)
Access levels
Alerts
Automatic Boiler Differential
Boiler pump(s) operation (optional)
Condensing & non-condensing boiler groups
Control up to 4 modulating or on/off boilers
DHW Priority (optional)
DHW pump operation
Equal Run Time Rotation
Exercising
Outdoor Temperature Reset
Powered system pump output
Primary pump sequencing
Programmable Schedule
Test sequence to ensure proper component operation
Warm Weather Shut Down
tekmarNet® 4 Compatible
Specifications
Control Microprocessor control. This is not a safety (limit) control Packaged weight 3.3 lb. (1500 g) Dimensions 6-5/8" H x 7-9/16" W x 2-13/16" D (170 x 193 x 72 mm) Enclosure Blue 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 ≤90% Non-condensing Power supply 115 V (ac) ±10%, 60 Hz, 7 VA, 1150 VA max Relays 230 V (ac) 5 A, 1/3 hp Modulating Output 0 - 10 V (dc), Minimum 2500 ohms Demands 20 to 260 V (ac) 2 VA Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 -Included Outdoor Sensor 070, 2 of Universal Sensor 082, and 500 ohm Resistor -Optional tekmar type: 071, 078, 082 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 2012 - Present
Installation & Operation Manual
Nov 2012 - Present
- Applications
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Product Application Drawings
Application Brochure
Nov 2012 - Current
More advanced application drawings can be found in our Solutions section.
- Service Bulletins
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Active Service Bulletins
Installing the 275 Modulating Boiler Control with Modulating Boilers
Mar 2011 - Present
RF Noise Interference
May 2009 - Present
Archived Service Bulletins
Modulating Boiler Interface Revision 8
Mar 2011 - Mar 2011 (Updated March 2011)
- Promotional
Promotional Literature
tekmar Accessory Products (10 total)
These are typical products that add more functionality to the Boiler Control 275
