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Tankless Gas Water Heater with Remote Control

Overview

Description

This solution provides an improved user experience for a developing application - the tankless gas water heater. By utilizing two controllers - one in the kitchen and the other in the bathroom - the user can control the water temperature and amount of water remotely.

Renesas has developed this solution by utilizing a two-chip MCU solution that provides a compact design with minimal expense. The design includes an MCU, sensor and connection modules like Bluetooth® Low Energy (LE) or Wi-Fi and a high-accuracy temperature/humidity sensor with up to ±1.5%RH.

System Benefits:

  • A single power solution for the entire system, enabling continuous long-distance control without interruption
  • Accurate temperature and humidity control

Comparison

Applications

Winning Combinations Interactive Diagram

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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 CN104 CN104 CN104 Buck Regulator 1 Buck Regulator Buck Regulator RS-485 Transceiver 1 RS-485 Transceiver RS-485 Transceiver RS-485 Transceiver 2 RS-485 Transceiver RS-485 Transceiver Temperature Sensor Temperature Sensor Temperature Sensor Buck Regulator 2 Buck Regulator Buck Regulator Clock Generator Clock Generator Clock Generator Wi-Fi Module Wi-Fi Module Wi-Fi Module AUX Power AUX Power AUX Power Remote Control Remote Control Remote Control Main Control Main Control Main Control Motor.45 Sheet.46 Sheet.47 M M Touch Key Sheet.109 Sheet.110 Sheet.111 Sheet.112 Sheet.113 Sheet.114 Sheet.115 Sheet.116 Sheet.117 Touch Key Sheet.119 Sheet.120 Sheet.121 Sheet.122 Sheet.123 Sheet.124 Sheet.125 Sheet.126 Sheet.127 Wi-Fi LCD/LED Segment Display Sheet.130 Sheet.131 Sheet.132 Sheet.133 Sheet.134 Sheet.135 Sheet.136 Sheet.137 Sheet.138 Sheet.139 Sheet.140 Sheet.141 Sheet.142 Sheet.143 Sheet.144 Sheet.145 Sheet.146 Sheet.147 Sheet.148 Sheet.149 Sheet.150 Sheet.151 Sheet.152 Sheet.153 Sheet.154 Sheet.155 Sheet.156 Sheet.157 Sheet.158 Sheet.159 ON ON Sheet.160 OFF OFF Sheet.161 Sheet.162 Sheet.163 Sheet.164 Sheet.165 Sheet.166 Sheet.167 Sheet.168 LCD/LED Segment Display.169 Sheet.170 Sheet.171 Sheet.172 Sheet.173 Sheet.174 Sheet.175 Sheet.176 Sheet.177 Sheet.178 Sheet.179 Sheet.180 Sheet.181 Sheet.182 Sheet.183 Sheet.184 Sheet.185 Sheet.186 Sheet.187 Sheet.188 Sheet.189 Sheet.190 Sheet.191 Sheet.192 Sheet.193 Sheet.194 Sheet.195 Sheet.196 Sheet.197 Sheet.198 Sheet.199 ON ON Sheet.200 OFF OFF Sheet.201 Sheet.202 Sheet.203 Sheet.204 Sheet.205 Sheet.206 Sheet.207 Sheet.208 Optional: 32KHz 12/20M XTAL Replacement Optional: 32KHz 12/20M XTAL Replacement Optional: 32KHz 12/20M XTAL Replacement Key Key Key Sheet.211 Sheet.212 LED LED LED Sheet.214 3.3V 3.3V 3.3V Sheet.216 12V 12V 12V Sheet.218 Sheet.219 Key Key Key Sheet.223 Sheet.224 3.3V 3.3V 3.3V Sheet.226 Sheet.227 Sheet.228 Sheet.229 Sheet.230 Sheet.231 Sheet.232 Sheet.233 3.3V 3.3V 3.3V 12V 12V 12V Sheet.240 Solenoid Valve Connector Arrow Connector Arrow.714 Sheet.237 Sheet.241 Sheet.33 Sheet.49 Sheet.261 Sheet.262 Sheet.263 Sheet.264 Sheet.265 Sheet.266 Sheet.275 Sheet.276 MOSFET x3 MOSFET x3 MOSFET x3 N-Channel MOSFET Sheet.243 Sheet.244 Sheet.245 Sheet.246 Sheet.247 Sheet.248 Sheet.249 Sheet.250 Sheet.251 Sheet.252 Sheet.253 Sheet.254 Sheet.255 Sheet.256 Connect.50 Sheet.258 Sheet.259 Sheet.260 Sheet.277 Sheet.278 LED LED LED Sheet.280 Fan FAN FAN Valve Valve Valve Pump Pump Pump 12V 12V 12V 24/27V 24/27V 24/27V 36V 36V 36V Sheet.287 Sheet.288 Sheet.289 Sheet.290 Sheet.300 MCU 1 MCU MCU GPIO GPIO GPIO UART UART UART Sheet.301 MCU 2 MCU MCU GPIO GPIO GPIO UART UART UART GPIO GPIO GPIO UART UART UART PWM PWM PWM I2C I2C I2C
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