Tekmar 279 Steam Control - 1 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 include: 24 hour, 5-1-1, 7 day schedule; built-in programmable timer; CSA approved for use in USA and Canada; DHW tankless coil operation; indoor temperature feedback (with optional indoor sensor); large LCD display; manual override; outdoor temperature reset; two alert level relays; 2 or 4 schedule events per day and warm weather shut down. Control: 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). 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%, 50/60 Hz, 3.5 VA. Relays: 230 V (ac) 5 A, 1/3 hp, pilot duty 240 VA. Included: Outdoor Sensor 070 and Universal Sensor 071.