J SQ20-TFLRB(G) and J SQ20-TFLRB(S) are wall-mounted gas water heaters with a maximum outlet temperature of 70℃. They can be set for high water temperature, and each press of the 50℃+ key increases the set temperature by 5℃; when it reaches 60℃, press the key again to directly set the maximum value of 70℃, and the temperature is reduced in reverse (only for balance machines).
This manual begins with safety precautions, warning users about gas leaks, proper venting, and the need for professional installation. It details the required clearances for vent pipes, grounding of the power supply, and steps to avoid fire or carbon‑monoxide hazards.
Subsequent sections cover installation of gas and water connections, vent pipe routing, and the control panel functions such as temperature setting, water‑flow display, and fault codes. Technical data, maintenance tips, troubleshooting procedures, and warranty information are also included. This manual is written in Chinese.
| Fuel Type | Liquefied petroleum gas, natural gas, artificial gas |
|---|---|
| Rated Heat Output | 16 kW / 20 kW / 22 kW |
| Ignition Method | Electronic pulse discharge ignition |
| Water Pressure Range | 0.02 MPa – 1.0 MPa |
| Rated Hot‑Water Capacity | 8 kg/min (ΔT = 25 K) – 11 kg/min (ΔT = 25 K) |
| Gas Pipe Size | G3/4" |
| Water Pipe Size | G1/2" (both hot and cold) |
| Dimensions (L×W×H) | 540 mm × 320 mm × 140 mm |
| Net Weight | 12.5 kg |
| Rated Voltage | AC 220 V |
| Frost‑Protection Power (if equipped) | 80 W |
| Energy Efficiency Class | Class 2 |
Press and hold the mute button on the alarm unit until the beeping stops.