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The sealed R290 refrigerant circuit is factory-charged and does not require field handling of refrigerant gas — so no F-Gas handling certification is needed to install this unit
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allowing the installer to balance temperature rise against available mains flow on site
This device facilitates system monitoring
Honeywell)
ESi ESRTP4RFW Wireless Programmable Room Thermostat with RF Receiver TRV4 The sealed R290 refrigerant circuitThe ESi ESRTP4RFW is a wireless RF programmable room thermostat that combines time and temperature control in a single battery powered unit, paired with a mains wired RF receiver. Its large backlit LCD screen and simple button layout make programming straightforward, while energy saving features such as Chronoproportional Control (TPI), Optimum Start, and Optimum Stop help reduce fuel costs and carbon emissions. Because the thermostat and receiver
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