The Boiler Control 265 is designed to stage multiple modulating boilers using Outdoor Temperature Reset. It can be used in applications ranging from baseboard or radiant heating systems, 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 control. It is capable of controlling (stage and rotate) up to 3 modulating boilers by using a native 4-20 mA (or 0-20 mA) signal that can be converted to 2-10 V (dc) or 0-10 V (dc), as well as the system pump.
- Submittal Sheet
- Data Brochure
Features
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Advanced settings to fine-tune building requirements
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Automatic Boiler Differential
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Boiler pump operation
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Control up to 3 modulating boilers
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DHW Priority (optional)
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DHW pump or valve operation
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Equal Run Time Rotation
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Exercising
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Outdoor Temperature Reset
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Powered system pump output
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Quick setup for easy installation and programming of control
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Setback input for energy savings
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Test sequence to ensure proper component operation
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User comfort adjustment to increase or decrease building space temperature
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Warm Weather Shut Down
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, Altitude <6560 ft. (2000 m), Installation Category II, Pollution Degree 2 |
Power supply | 115 V (ac) ±10%, 60 Hz, 600 VA |
Relays | 230 V (ac) 5 A, 1/3 hp, pilot duty 240 VA |
Modulation output | 0-20 mA / 4-20 mA (up to 1000 Ω load) |
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 071, and 4 of 500 Ω Resistor |
-Optional | tekmar type #: 071, 082 |
Warranty | Limited 3 Year Warranty |