|
|
 |
|
|
Tekmar Boiler Control-One tN4, Four Stage Boiler & DHW/ Setpoint |
|
|
Click to enlarge |
|
Tekmar Boiler Control-One tN4, Four Stage Boiler & DHW/ Setpoint
The Boiler Control 274 is designed to stage multiple boilers using Outdoor Temperature Reset. It can be used in applications ranging from a single zone of baseboard, multiple baseboard and fan coil zones, to dedicated domestic hot water heating in commercial buildings. This control regulates a single heating water temperature through Outdoor Temperature Reset and/or setpoint/DHW target control. It is capable of controlling (stage and rotate) up to 4 on/off boilers as well as the system pump.
Features
- Advanced settings to fine-tune building requirements
- Automatic Boiler Differential
- Boiler pump operation
- Control up to 4 On-Off boilers
- DHW Priority (optional)
- DHW pump or valve operation
- Equal Runtime Rotation
- Exercising
- Optional boiler pump(s) operation
- Outdoor Temperature Reset
- Powered boiler pump output
- Primary pump sequencing (optional)
- Quick setup for easy installation and programming of control
- Test sequence to ensure proper component operation
- User comfort adjustment to increase or decrease building space temperature
- Warm Weather Shut Down
Specifications
| Control |
Microprocessor control. This is not a safety (limit) control |
| Packaged weight |
3.3 lb. (1550 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 |
| Relay capacity |
230 V (ac) 5 A, 1/3 hp |
| 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 500Ω Resistor |
| -Optional |
tekmar type #:071,078,082 |
| Warranty |
Limited 3 Year Warranty |
Current Literature
Product Submittal |
Jan 2011 - Present |
274_C |
Installation & Operation Manual |
Nov 2010 - Present |
274_D |
Application Brochure |
Nov 2002 - Nov 2003 |
274_A |
RF Noise Interference |
May 2009 - Present |
SB0054 |
Energy Savings with Outdoor Reset Brochure |
P0022 |
Part Number: 274
|
|
|
|
|
|
|
