High-Efficiency Tankless Water Heater with Enhanced Gas Burner Parts

• Customization: Available
• Capacity: 12L
• Gas Type: Natural Gas
• Model NO.: WS/Q1
• Type: Forced Exhaust
• Energy Efficiency Grade: One
• Interior Material: Copper
• Installation: Indoor Standard Installation
• Control Mode: Mechanical Edition
• Usage: Bathroom, Kitchen
• Certification: ISO9001, CCC
• Function: Water Boiler, Steam Boilers
• Fuel: Gas-Fired
• Media: Hot Water
• Water Circulation: Forced Circulation
• Drum Placement: Vertical Boiler
• Manufacturing Level: a
• Burning Style: Chamber Combustion Boiler
• Structure: Cold-Rolled Steel Plate Powder Coating
• Maximum Pressure of Heating System: 0.3MPa
• Minimum Starting Flow Rate for Domestic: 2.7L/Min
• Expansion Tank Volume: 8L
• Expansion Tank Pre-Charge Pressure: 1 Bar
• Heatsink Temperature Adjustment Range: 30-80℃
• Underfloor Heating Temperature Adjustmen: 30-60℃
• Domestic Hot Water Temperature Adjustmen: 30-60
• Transport Package: Cardboard Box
• Specification: 74cm*410cm*400cm
• Trademark: DISIDUN
• Origin: Dezhou, China
• Production Capacity: 5000
• Package Size: 74.00cm * 41.00cm * 31.00cm
• Package Gross Weight: 40.000kg

Product Description

Product Introduction

The WSA3 gas heater flaunts a matte white finish, perfect for kitchens or utility rooms. Wall-mounted, its modern vertical design saves space. A top metallic vent handles exhaust, with a prominent brand logo. Below, a slot for indicators sits above a black control zone—featuring a circular display (temperature, time, settings) and intuitive buttons (power, temperature, mode). The white body and black panel marry functionality with style.

Function

The WSA3 gas heater is dual-purpose, offering central heating and on-demand hot water. Powered by gas (natural or LPG), it efficiently heats water: circulating through radiators or underfloor systems for warmth or delivering directly to taps and showers (no hot water tank needed). The digital panel lets users adjust heating, set schedules, toggle modes, and monitor status in real time. Safety features include flame failure protection, overheat shut-off, and pressure regulation for safe home performance.

Advantages

The WSA3 gas heater offers key benefits. Its dual-function design merges heating and hot water, reducing installation costs and saving space—ideal for small homes. The premium gold finish enhances decor flair. Gas operation is cost-effective, usually cheaper than electric, and on-demand hot water minimizes energy waste. The intuitive control system ensures easy use, with safety features for peace of mind. This appliance combines style, efficiency, cost-effectiveness, and functionality for versatile solutions.

Product features:	Heating   domestic hot water plate heat exchanger
	Wireless indoor thermostats (optional)
	Mobile phone WiFi wireless connection (optional)
	Fashionable appearance: LED display, touch buttons, simple and fashionable.
	Safe and stable: carefully designed, reasonable structure, stable operation, safe and reliable.
	High thermal efficiency: power, wind speed synchronous dynamic adjustment, full combustion, higher efficiency.
	Silent and energy saving: DC inverter fan, power consumption is greatly reduced, low-noise operation.
	Bathroom performance: high power adjustment ratio for bathroom, staged combustion, quick response, quick temperature control
	Adaptive system: automatically adapt to the length of the flue, automatically increase or decrease the speed, automatically compensate for the air volume.
	Functional advantages: system self-check, automatic adaptation, automatic matching, stable performance, safe and reliable
	Quality assurance: accessories are selected from international, domestic first-line brands, performance, quality assurance.
	3C certification: National mandatory 3C certified products.

Product Technical Specifications
Model WS / Q 1		LL1GBQ20-WS/Q1	LL1GBQ24-WS/Q1	LL1GBQ28-WS/Q1	LL1GBQ36-WS/Q1
Types of gas	12T	natural gas
Rated gas pressure	Pa	2000
Heating rated heat load	kW	20	24	28	36
minimum heating load	kW	4	5	5.6	7.2
Rated heat load of domestic hot water	kW	20	24	28	36
Rated heat output for heating	kW	19	22.8	26.6	34.2
Minimum heat output for heating	kW	4	5	5.6	7.2
Rated condensing heat output for heating	kW	20.6	24.7	28.8	37
Minimum heat output for heating condensing	kW	4.15	5.15	5.8	7.4
Maximum pressure of heating system	MPa	0.3
Applicable water pressure for domestic hot water systems	MPa	0.03-0.7
Minimum starting flow rate for domestic hot water	L/min	2.7
Hot water production capacity at Δt=25℃	kg/min	10.5	12.8	15	19
Hot water production capacity at Δt=30℃	kg/min	8.8	10.8	12.7	16.3
Expansion tank volume	L	8	8	8	8
Expansion tank pre-charge pressure	bar	1	1	1	1
Heatsink temperature adjustment range	℃	30-80
Underfloor heating temperature adjustment range	℃	30-60
Domestic hot water temperature adjustment range	℃	30-60
Power supply properties	AC	220V~50Hz
Click on protection type		Class I
Enclosure protection rating		IPX4
Rated power	W	120	120	170	170
Minimum load power	W	90	90	130	130
Standby power	W	2	2	2	2
Heating supply/return water interface	/	G3/4
Gas interface	/	G3/4
Domestic water inlet/outlet interfaces	/	G1/2
Coaxial flue dimensions	mm	φ60/100
Net weight/Gross weight	kg	35/37	36/38	38/40	40/42
External dimensions (height × width × thickness)	mm	740×410×305	740×410×305	740×410×305	740×410×325
Energy efficiency rating		Level 1

Main Product

Company Profile

Dezhou Watson Electric Co., Ltd. is located in the national Tianqu industrial Park ofDezhou City, known as "Jiuda Tianqu, Shenjing Gateway," with convenient transporta.tion and elegant environment. lt is a high-tech joint-stock enterprise integrating R & Dproduction,sales and service of thermal energy equipment.

Since its establishment in 2011, the company has always pursued the development con-cept of technological innovation and perfect quality, providing users with safe, ener-gy-saving and environmentally friendly heating products. Product series: domestic gasheating furnace, commercial gas premixed condensing water heater, Commercial fullpre-mixed steam generator, air source heat pump air heater, air source heat pump airenergy and other high-end products, can provide family and commercial heating, hotwater and heating system solutions, widely used in residential quarters, offce buildings.shopping malls and other places.

The company has a professional scientifc research team, advanced production linesand testing equipment, strong technical strength, complete product models, qualifca-tion certifcate authority, products obtained national quality testing certifcation, Na.tional Energy Conservation Certifcation, National Environmental Protection Certifca.tion, National Compulsory Product 3c Certifcation, Star After-sales Service Certifca.tion, Provincial Quality Inspection Bureau Inspection Certifcation, Gas Burning Appli-ance Installation and Maintenance Qualifcation, National Testing Five-Star ProductCertifcation, Multiple Product Patents and Other Certifcates. The company hasmodern management, practicing lS0001 quality management system, IS045001 occu-pational heath management system, 1S014001environmental management system; Bythe General Administration of Quality Supervision, inspection and Quarantine as thenational hundred best quality and integrity benchmarking enterprise, AAA Quality In-tegrity Demonstration Company, AAA Quality Service Integrity Demonstration Compa.ny, AAA Quality Service Integrity Demonstration Company, AAA Quality Service IntegrityCompany,AAA Credit Rating Certifcate,etc.

Our Factory

Our Certifcate

Exhibition

Packaging & Shipping

FAQ

1. Q: How to choose the power of the wall-mounted boiler to match my home layout?

A: For ordinary residential buildings of 80-150 square meters, choose 24KW, which can meet the heating and hot water needs of one kitchen and two bathrooms; Choose 28KW or above models for 150m2 or larger floor-to-ceiling units or villas; For homes in the south without insulation or those with multiple bathrooms, it is recommended to increase the power by 20% to 30% to avoid insufficient hot water or heating.

2. Q: Does the online purchase of a wall-mounted boiler include installation services? How much is the charge for auxiliary materials?

A: Most online shopping models of brands include free basic installation, but do not include special fees such as high-altitude work and wall drilling. Auxiliary materials such as pipes, corrugated pipes, and filters need to be purchased separately. The total cost of auxiliary materials and special installation fees is usually around 1,000 yuan, and you can consult customer service to confirm the details of the package.

3. Q: Can a dual-purpose wall-mounted boiler provide both heating and hot water at the same time?

A: It can't run at the same time, the hot water function will start first. The machine will automatically switch between heating and hot water mode according to the opening of the hot water faucet, and the heating will be temporarily suspended when taking a bath, and the heating will resume after the hot water is turned off.

4. Q: Is there a big difference between first-class energy efficiency and ordinary wall-mounted boilers? Is it worth spending more money to buy it?

A: The main difference lies in energy efficiency. Most of the first-class energy efficiency is condensing wall-mounted boilers, and the thermal efficiency can reach more than 107%. It can save 15% to 20% of the gas fee compared with ordinary non-condensing boilers. It is very cost-effective to use it for a long time, especially for large houses or families who use hot water for a long time, and the saved gas fee can quickly cover the difference.

5. Q: The old house doesn't have pre-installed heating pipes, can I install this wall-mounted boiler?
A: Sure. For old houses or houses that have already been renovated, you can choose the open-air radiator system, which does not need to damage the walls and decoration during construction, has a short construction period, and has a good appearance after installation. After placing the order, you can book a master to measure and design the installation plan at home.

6. Q: Is there any after-sales guarantee for the product? How long is the warranty period?
A: The product strictly adheres to the national "three guarantees" policy. The main model is guaranteed for 3-5 years, and the core components such as heat exchanger and water pump are guaranteed for 8-10 years. There are official authorized after-sales outlets nationwide, and after reporting a problem, a technician will be arranged to come to the door for inspection. You can contact customer service to inquire about the location of local outlets.
7. Q: Can the wall-mounted boiler still heat normally after the water supply is cut off?
A: It can heat normally. The heating system is a closed water circulation system, which does not need to be filled with water in real time, and water stop does not affect its operation; However, hot water depends on the supply of tap water, and it cannot be used after the water supply is cut off.
8. Q: How to prevent the wall-mounted boiler from freezing when no one is at home for a long time in winter?
A: When you go out for a short time, you can turn on the machine's anti-freezing mode, keep the power and gas on, and the equipment will automatically maintain a low temperature to prevent freezing. If you are away from home for a long time, it is recommended to turn off the water, electricity and gas, drain the water in the machine and pipes, and avoid water freezing and damaging the parts.

9. Q: Does the wall-mounted boiler consume a lot of electricity? Will it consume a lot of electricity during operation?
A: It doesn't consume much power. The main power-consuming components are the fan and the water pump, with a rated power of only 100-200W, and they do not run continuously; they are synchronized with the start-up and shutdown of the heating system, and the monthly power consumption is roughly the same as that of a household refrigerator.
10. Q: Can I return or exchange the product if I find that the model is not suitable after receiving the product?
A: We support a 7-day no-reason return and exchange if the product has not been opened and does not affect resale. If it has been opened or scheduled for installation, it may need to bear the cost of installation and auxiliary material loss if it is not a quality issue, and it is recommended to confirm the compatible model before placing an order.