270
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Discontinued - Replaced By: 294
Part of the Multi-Staging Controls Series
Ordering Code: 270
UPC: 779655027001
270 Boiler Control
The boiler control 270 is designed to operate a single modulating boiler using outdoor temperature reset. It can be used in applications ranging from baseboard or radiant heating systems, to combination radiant and DHW systems. This control regulates a single heating water temperature through outdoor temperature reset and/or setpoint/DHW control. It is capable of controlling a single modulating boiler, as well as the system pump.
Features
- Outdoor temperature reset, indoor Temperature Feedback
- Setback input for energy savings, warm weather shut down
- Modulating boiler control, exercising
- Powered system pump output, DHW pump or valve operation
| Specifications | |
|---|---|
| Agency Approvals | CSA C US, meets class B: ICES & FCC Part 15 |
| Ambient Conditions | Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 90 percent Non-condensing, Altitude less than 6560 ft. (2000 m), Installation Category II, Pollution Degree 2 |
| Control Type | Microprocessor control, this is not a safety (limit) control |
| Demand | 20 to 260 V (ac) 2 VA |
| Dimensions | 6 5/8 IN H x 7 9/16 IN W x 2 13/16 IN D (170 x 193 x 72 MM) |
| Enclosure Material | Blue PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Hydronic - HVAC Control Type | Boiler Control |
| Modulating Output | 0-10 V (dc) |
| Power Supply | 115 V (ac) plus / minus 10 percent, 50/60 Hz, 600 VA max |
| Relay | 230 V (ac) 5 A, 1/3 hp, pilot duty 240 VA |
| Sensor | NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892 |