Boiler Start UP and Operations

IMPORTANT

Only an A.O. Smith Certified Start-up agent must perform the initial firing of the boiler. At this time the user should not hesitate to ask the start-up agent any questions regarding the operation and maintenance of the unit. If you still have questions, please contact the factory or your local A.O. Smith representative. Contact Technical Support noted on the back cover for the name of your closest Certified Start-Up agent.

Lighting and Operating instructions are included with this manual. By using these instructions, the user may be able to make minor operational adjustments and save unnecessary service calls. However the user should not attempt repairs, but should contact a service technician or gas supplier.

GENERAL

Never operate the boiler without first making sure the boiler and system are filled with water, in addition:

•Make sure a temperature and pressure relief valve is installed in the storage tank for hot water supply installations.

•Make sure that the boiler and system have been purged of air and checked for leaks.

Also ensure to check the gas piping for leaks before beginning the initial firing of the boiler.

Figure 42. GAS TRAIN ASSEMBLY

MANIFOLD PRESSURE CONNECTIONS

Take the manifold pressure, refer to Table 2, by removing the pipe plug and inserting a suitable 1/8” NPT hose barb for connection to the manometer/pressure gauge. Upon completion of measurements and adjustments, remove the hose barb and replace the pipe plug. Check for gas leaks and insure all connections are gas tight, see Figure 42.

FILLING AND PURGING OF HEATING BOILER

INSTALLATION

1.Fast fill system through bypass until pressure approaches desired system pressure. Close bypass valve and permit pressure to be established by the pressure reducing valve.

2.Vent all high points in system to purge system of air.

Provisions should be made to permit manual venting of radiators or convectors.

FILLING HOT WATER SUPPLY BOILER

INSTALLATION

1.Close the system’s drain valve by turning handle clockwise.

2. Open a nearby hot water faucet to permit the air to escape WATER TEMPERATURE REGULATION

3.Fully open the cold water inlet pipe valve allowing the boiler and piping to be filled.

4.Close the hot water faucet as water starts to flow.

PURGING GAS LINE

Gas line purging is required with new piping or systems in which air has entered.

INLET GAS PRESSURE

The inlet gas pressure is measured by removing the 1/8” NPT Plug located on the upstream side of the supply gas valve, and insert a 1/8” NPT hose barb fitting to be connected to a manometer or pressure gauge. Once pressure has been checked and/or adjusted, replace the plug and check for leaks. The maximum value specified in Table 2 on Page 6 must not be exceeded. The minimum values, shown in Table 2, must be maintained under both load and no load conditions (static and firing conditions). The combination gas valves supplied with the boiler are for low pressure service. If upstream pressure exceeds 14.0” W.C., an intermediate gas pressure regulator of the lockup type must be installed.

3400, 1700, 2000, 2600 specifications

A.O. Smith, a leader in water heating solutions, has developed a range of high-efficiency water heaters that cater to various residential and commercial needs. Among their stellar offerings are the A.O. Smith 2600, 2000, 1700, and 3400 models, each boasting impressive features, cutting-edge technologies, and excellent energy efficiency.

The A.O. Smith 2600 model is designed for those who require a robust water heating solution with a capacity to handle high-demand scenarios. It utilizes a highly efficient heating element that provides rapid heating and maintains a steady output. The built-in smart control system allows users to monitor temperature settings and track energy consumption, ensuring optimal performance.

Next in line, the A.O. Smith 2000 is perfect for households that require a reliable and efficient water heater without compromising on space. This compact model integrates advanced thermal insulation that minimizes heat loss, coupled with a powerful heating element that ensures quick heating times. Its sleek design makes it suitable for various installations while maintaining aesthetic appeal.

The A.O. Smith 1700 model caters specifically to smaller residential needs but retains features that align with higher-end models. It incorporates state-of-the-art safety features, including overheat protection and a pressure relief valve. Its lightweight structure and ease of installation stand out, making it a recommended choice for those looking for efficient heating without extensive modifications to their plumbing systems.

Lastly, the A.O. Smith 3400 is a powerhouse designed for larger commercial applications. This model offers exceptional heating capacities and includes advanced technologies such as a digital display for easy monitoring and control. The robust build is complemented by a high-performance insulation system that significantly reduces energy consumption and operating costs.

All A.O. Smith water heaters, including the 2600, 2000, 1700, and 3400 models, feature corrosion-resistant materials ensuring longevity and durability. With their commitment to quality and innovation, A.O. Smith continues to provide water heating solutions that meet modern demands while emphasizing energy efficiency and user convenience. Whether for residential or commercial use, each model represents the pinnacle of reliability and performance in water heating technology.

In conclusion, A.O. Smith has established itself as a reliable choice for water heaters, with models that cater to diverse needs without compromising on efficiency or quality.