water heater nest thermostat used to switch circulating pumps,boilers or most common motorised zone valves.

1.About us                                                                                                                                      

Keram(Nanjing) Controls & Equipments Co;,Ltd. Was founded in 2000,a professional manufacturer and supplier of controls equipment and products design. Our products are related to gas safety control,temperature control,time control,over-heating control, pressure and temperature controls used on refridgeration and compressor,water pressure switch and all kinds of solenoid valves and safety valves.

 New Building Of Keram Controls

keram control add more high precision CNC machine to improve product reliability and efficiency

2.Description                                                                                                                                  

A practical surface mounted mechanical thermostat suitable for temperature control in industrial environments, refrigeration and cooling cellars, greenhouses and electrical panels. The thermostat permits the user to control a heating system to react to temperature which if low enough could result in frost damage either to the system itself, or to the environment in which it is located. The concept is similar to a room thermostat, but it senses lower temperature and ignores and by-passes all other timers and thermostats.The device should be set at a temperature of between 3 & 5 deg℃ and should be placed above areas which is at risk of frost damage. This unit can be used to switch circulating pumps,boilers or most common motorised zone valves.The device is designed to be used internally. If externally applied, ensure that is enclosed within a weather proofed housing.

3.Technical Specifications                                                                                                           

4.Dimension                                                                                                                                   

5.Installation                                                                                                                                   

Once the wall plate has been adequately secured to an appropriate surface, the body of the thermostat is located by engaging the broad head of the studs A, into the holes and slots B, and then pushed down until secure. For additional security,the edges of the tags C, can be distorted to prevent the unit from being lifted up and off the wall plate. The electrical connections can now be made for which the temperature adjustment dial should be gently prised off and the front housing screws removed.

6.Wiring Diagram                                                                                                                           

Snap Action SPDT microswitch contacts in AgCdO /  When Temperature Rises:  1-C opens 2-C closes 

7.Setting the Temperature                                                                                                           

Turn the dial to the desired setting making sure the temperature at which the device is required to operate frost protection, lines up with the mark on the main body of the thermostat.

8. Product Process & Package