Copper-fin II/IIE Boiler and Water Heater Service Manual

2 Maintenance (continued)

Access to the burners will require the following steps: Checking combustion air pressure

1.Turn off main electrical power to the appliance.

2.Turn off main manual gas shutoff to the appliance.

3.Remove the upper and lower outer front access doors.

4.Disconnect the manifold(s) from the gas train using the union(s) just below each gas valve.

5.Disconnect the wiring to the hot surface igniter(s) and ground.

6.Disconnect burner pressure line at burner.

7.Remove the screws from the manifold mounting bracket(s) and remove the manifold(s).

8.Remove the screws from the burner mounting flanges and slide the burner(s) out toward the front of the unit. Use caution to prevent damage to the burners, refractory, hot surface igniter, and wiring.

9.Remove soot from the burners with a stiff bristle brush. Dirt may be removed from the burner ports by rinsing the burner thoroughly with water. Drain and dry burners before re-installing. Damaged burners must be replaced.

10.Reassemble in reverse order.

NOTICE

When installed in a dusty and dirty location,

 

the burners may require cleaning on a 3 to 6

 

 

month schedule or as needed, based on the

 

severity of contamination. Contaminants

 

can be drawn in with the combustion air.

 

Non-combustible particulate matter such as

 

dust, dirt, concrete dust, or drywall dust can

 

bloc burner ports and cause non-warrantable

 

failure. The standard inlet air filter will help

 

eliminate dust and dirt from entering the

 

unit.

The combustion air fans are factory pre-set and should not require adjustment in most cases. Follow the steps in the Checking / Adjusting Combustion Air Pressure Section to adjust the fan if a continuous Low Air status code occurs.

NOTICE

On the 399,999 - 750,000 Btu/hr models,

the air shutter is adjusted to the side of the

 

 

fan as depicted in FIG. 2-2. On the 990,000

 

- 2,070,000 Btu/hr models, the air shutter is

 

adjusted by sliding the arm located on the

 

front of the air box as depicted in FIG. 2-3.

Check for proper installation and draft in the venting system prior to any adjustments. Correct as needed.

Figure 2-2_Adjusting air shutter - 399,999 - 750,000 Btu/ hr Models

LESS AIR

MORE AIR

AIR SHUTTER

Figure 2-3_Adjusting air shutter - 990,000 - 2,070,000 Btu/hr Models

NOTICE

While burners are removed, check the heat exchanger surface for sooting. If present, the heat exchanger must be cleaned. Reference the Heat Exchanger Cleaning procedures in this manual.

MORE AIR

LESS AIR

AIR SHUTTER

ADJUSTING BRACKET

29

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Lochinvar 402, 2072 service manual 2Adjusting air shutter 399,999 750,000 Btu/ hr Models
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402, 2072 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.
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