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Update time: 2024-11-10 13:44:52
Creation time: 2023-01-18 19:18:15
Description

Description

This is an old convector smarter system.

The resistor heats the pipe thermostat, and the convector does not turn on when it is heating.

Heating can be turned off with an external signal (thermostat), or the Auto/manual switch.

To implement the control, a two-wire room thermostat needs to be connected to the device. If desired, the device control can also be integrated into a smart home system. By heating the probe of the gas convector, it "tricks" the gas valve of the convector, causing it to shut off and stop heating. When the room temperature drops below the value set on the room thermostat, based on the signal from the room thermostat, the device removes the heating from the gas convector’s pipe thermostat, which then cools down (about 3-6 minutes) below the temperature set by the gas convector’s control knob. This allows the gas convector to turn on and start heating.

When the room temperature reaches the set value on the room thermostat, the thermostat sends a signal to the device, which heats the pipe thermostat (about 1-1.5 minutes) above the temperature set by the convector’s control knob, causing the gas convector to shut off.

Design Drawing

Design Drawing

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ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier
1 CJ431 U1 SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR 1 CJ431 CJ(江苏长电/长晶) LCSC C3113
2 1uF C3 C_0603_KICAD 1 CL10A105KB8NNNC Samsung Electro-Mechanics LCSC C15849
3 6,8k R1 C_0603_KICAD 1 0603WAF6801T5E UNI-ROYAL(Uniroyal Elec) LCSC C23212
4 22k R2 C_0603_KICAD 1 0603WAF2202T5E UNI-ROYAL(Uniroyal Elec) LCSC C31850
5 8,2k R4 C_0603_KICAD 1 0603WAF8201T5E UNI-ROYAL(Uniroyal Elec) LCSC C25981
6 3,3k R5 C_0603_KICAD 1 0603WAF3301T5E UNI-ROYAL(Uniroyal Elec) LCSC C22978
7 30k R6 C_0603_KICAD 1 0603WAF3002T5E UNI-ROYAL(Uniroyal Elec) LCSC C22984
8 5,6k R9 C_0603_KICAD 1 0603WAF5601T5E UNI-ROYAL(Uniroyal Elec) LCSC C23189
9 330k R10 C_0603_KICAD 1 0603WAF3303T5E UNI-ROYAL(Uniroyal Elec) LCSC C23137
10 AO3400A Q1 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR 1 AO3400A AOS LCSC C20917
11 LM358 U3 SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL 1 LM358DR2G onsemi LCSC C7950
12 100nF C4 C_0603_KICAD 1 CC0603KRX7R9BB104 YAGEO LCSC C14663

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