This document is a product catalog, which provides details of the characteristics of RUS-20RFJ, RUS-20RFJ(N), RUS-24RFJ, RUS-24RFJ(N), JSW40-J and JSW48-J products.
This manual describes the features and advantages of the JSW40-J and JSW48-J gas water heaters, including micro‑computer control, rain‑proof outdoor installation, and multiple safety protections such as flame‑failure, over‑heat, over‑pressure and freeze protection. It also explains the remote‑control functions, automatic water‑flow control and energy‑saving gas‑proportion valve.
The guide covers initial setup, normal operation, temperature adjustment (35‑60 °C in 16 steps), minimum start flow (2.4 L/min), maintenance, troubleshooting with fault codes, and the electrical wiring diagram. Safety precautions and warranty registration information are also provided. This manual is written in Chinese.
The heater includes flame‑failure protection, over‑heat protection, over‑pressure protection, fan‑stop safety, over‑current protection, anti‑dry‑burn, and freeze protection.