This document describes the features and characteristics of the products including RUS-20FEJ, RUS-20FEJ(F), RUS-24FEJ, RUS-24FEJ(F), JSQ40-J, JSQ48-J.
This manual describes the features of the Rinnai forced‑exhaust gas water heater, including micro‑computer control, safety protections, automatic water‑flow control, and energy‑saving functions. It also lists the parts of the unit, the temperature controller layout, and the wiring diagram.
Instructions cover first‑time setup, temperature adjustment, remote‑control operation, regular maintenance, and fault diagnosis. Safety warnings and recommended maintenance procedures are provided to ensure reliable and safe operation. This manual is written in Chinese.
| Minimum start flow | 2.4 L/min |
|---|---|
| Heating power range | 4‑40 kW (20 L) / 4‑48 kW (24 L) |
The unit includes exhaust‑blockage detection, over‑heat protection, over‑pressure protection, fan‑stall protection, over‑current protection, anti‑dry‑burn, and anti‑freeze functions.