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279 | Steam Control - One Stage | Tekmar
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Overview
Details for 279
Steam Control - One Stage
The Steam Control 279 is designed to operate a single steam boiler using Outdoor Temperature Reset. It can be used in single pipe steam applications as well as applications using a tankless DHW coil. This control regulates the on time of a steam boiler through Outdoor Temperature Reset control. It is capable of controlling a single on/off steam boiler.
Features
- Large LCD display
- 24 hour, 5-1-1, 7 day schedule
- Indoor temperature feedback (with optional indoor sensor), manual override
- CSA approved for use in USA and Canada
- Two alert level relays
- Outdoor temperature reset, warm weather shut down
- Two or four schedule events per day
- Built-in programmable timer
- DHW tankless coil operation
Specifications
| Item Number | 279 |
| Brand | Tekmar |
| Category | Boiler / DHW Controls |
| 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 |
| Dimensions | 6-5/8" H x 7-9/16" W x 2-13/16" D (170 x 193 x 72 mm) |
| Enclosure Material | Blue PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Hydronic - HVAC Control Type | Steam Control |
| Power Supply | 115 V (ac) plus / minus 10 percent, 50/60 Hz, 3.5 VA |
| 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 |
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