JSQ JSQ21-A2 / JSQ16-A2 Domestic Gas Instantaneous Water Heater Installation & Instruction Manual

About this manual

This manual provides detailed installation, safety, operation, maintenance, and troubleshooting instructions for the JSQ JSQ21-A2 and JSQ16-A2 domestic gas instantaneous water heaters. It includes safety warnings, component descriptions, and step‑by‑step procedures for first‑time use and daily operation.

The guide also covers cold‑weather freeze prevention, regular inspection, warranty information, and a packing list. All instructions must be followed by qualified personnel to ensure safe and reliable performance. This manual is written in Chinese.

What's inside

• User Must Read
• Safety Precautions
• Component Names and Functions
• Initial Use Procedure
• Daily Use Procedure
• Cold Weather Freeze Prevention
• Fault Diagnosis
• Performance and Specifications
• Installation Instructions
• Warranty Service Regulations

Specifications

Frequently asked questions

What should I do if I detect a gas leak?

Immediately stop using the heater, close the gas valve, open doors and windows, and contact the company’s service department or local gas authority.

What are the required safety clearances for installing the heater?

The exhaust outlet must be at least 50 cm above the floor, 15 cm from each side, and 60 cm in front of any combustible material.