tekmar Boiler Control 275

Boiler Control 275

Control Description The Boiler Control 275 operates up to four modulating boilers to provide outdoor reset operation, domestic hot water and setpoint operation with priority. When operating as a tN4 System Control, the 275 can connect with up to 24 tN4 devices on a single boiler bus. The 275 has primary pump sequencing capabilities along with a flow proof or combustion air damper proof demand. The 275 can control up to four BTC I equipped boilers via direct drive.

Literature	—	D 275, A 275, D 001, D 070, SB050
Control	—	Microprocessor PID control; This is not a safety (limit) control
Packaged Weight	—	3.5 lb. (1600 g), Enclosure A, blue PVC plastic
Dimensions	—	6-5/8" H x 7-9/16" W x 2-13/16" D (170 x 193 x 72 mm)
Approvals	—	Certified to CSA C22.2 Nº 24-93
Ambient Conditions	—	Indoor use only, 32 to 122°F (0 to 50°C), < 90% RH non-condensing
Power Supply	—	115 V (ac) ±10% 50/60 Hz 7 VA, 1150 VA max
Relays	—	230 V (ac) 5 A 1/3 hp
Demands	—	20 to 260 V (ac) 2 VA
Sensors Included	—	NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 Outdoor Sensor 070 and 2 of Universal Sensor 071

Quick
links:

002 003 004 005 007 011 024 031 032 033 039 040 060 062 070 071 072 073 076 077 078 079 080 081 082 083 084 085 090 092 132 150 152 153 155 156 157 161 162 256 257 260 261 262 263 264 265 268 269 270 274 275 279 313 314 315 316 324 325 326 334 335 336 337 345 346 356 360 361 362 363 364 365 369 374 400 401 402 420 421 422 423 440 441 444 479 480 481 482 483 507 508 509 510 511 512 527 528 530 537 538 540 541 542 543 544 545 546 650 664 665 667 704 710 720 741

Literature

Control

Packaged Weight

Dimensions

Approvals

Ambient Conditions

Power Supply

Relays

Demands

Sensors Included