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Stainless Steel Heat Exchanger
ensuring fast recovery and energy savings
DHW Flow Rate
ar-callout
The three-phase system is achieved by distributing units evenly across L1
ESi ESRTP4+ Wired Programmable Room Thermostat with OpenTherm Sensor Stainless Steel Heat ExchangerThe ESi ESRTP4+ is a wired programmable room thermostat that combines time and temperature control in a single wall mounted unit, without a separate RF receiver to install. It provides the same core energy saving intelligence as the wider ESi programmable range, including Chronoproportional Control (TPI), Delayed Start, Optimum Start, and Optimum Stop, alongside an OpenTherm interface for compatible boilers. Wired directly into the heating circuit via
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