Tag: Tekmar 521

  • Tekmar 521 Programmable Thermostat Installation and Operation Manual

    Tekmar 521 Programmable Thermostat Installation and Operation Manual

    Tekmar 521 Programmable Thermostat Introduction The Programmable Thermostat 521 is designed for three different modes of operation: single stage heating, two stages of heating with a fan, or one stage of heating and one stage of cooling with a fan. Two auxiliary sensors may be added to measure the floor, outdoor or room temperature. A…