Manuals / Lochinvar / Household Appliance / Boiler

Lochinvar 45,000 - 260,000 BTU/HR Check All Wiring, Check Control Settings, Check Burner Flame

Models: 45,000 - 260,000 BTU/HR

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Installation & Service Manual

7Maintenance

Check All Wiring

1.Inspect all wiring, making sure wires are in good condition and securely attached.

Check Control Settings

1.Adjust settings if necessary. See Section 5 - Electrical Connections for adjustment procedures.

2.Check settings of external limit controls (if any) and adjust if necessary.

Perform Start-up and Checks

1.Start appliance and perform checks and tests specified in Section 6 - Start-up.

2.Verify cold fill pressure is correct and that operating pressure does not go too high.

Check Burner Flame

Visually check main burner flames at each start-up after long shutdown periods or at least every six months. A burner viewport is located on the burner mounting flange.

WARNING The area around the burner viewport is hot and direct contact could result in

burns.

WARNING: The area around the burners is hot and direct contact could result in burns!

Combustion Air

This appliance uses an atmospheric combustion process. Combustion air is provided to the burners by the gas injection pressure into the venturi of the burners. The burners do not have an adjustable air shutter. Adequate combustion air must be supplied to the room where the appliance is installed to ensure proper burner operation. Check frequently to be sure the flow of combustion and ventilation air to the unit is not obstructed. When the main burners light, observe the burner flame. Flames should be light blue in color with slight yellow tips; flames should be settled on burner head with no lifting when supplied with correct volume of combustion air.

Check Flue Gas Passageways

Any sign of soot around the outer jacket, at the burners or in the areas between the fins on the copper heat exchanger indicates a need for cleaning. The following cleaning procedure must only be performed by a qualified serviceman or installer. Proper service is required to maintain safe operation. Properly installed and adjusted appliances seldom need flue cleaning.

NOTICE

All gaskets on disassembled components

must be replaced with new gaskets on

 

 

reassembly. Gasket kits are available from

 

your distributor.

Heat Exchanger / Burner Access

NORMAL

A

C

YELLOW FLAME

YELLOW TIP

B

D

FLAME LIFT

WARNING The combustion chamber insulation in this appliance contains ceramic fiber material.

Ceramic fibers can be converted to cristobalite in very high temperature applications. The International Agency for Research on Cancer (IARC) has concluded, “Crystalline Silica in the form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group 1).” Normal operating temperatures in this appliance are below the level to convert ceramic fibers to cristobalite. Abnormal operating conditions would have to be created to convert the

Figure 7-1_Flame Pattern Illustration

Normal Flame: A normal flame is blue, with slight yellow tips, with a well defined inner cone and no flame lifting.

Yellow Tip: Yellow tip can be caused by blockage or partial obstruction of air flow to the burner(s).

Yellow Flames: Yellow flames can be caused by blockage of primary air flow to the burner(s) or excessive gas input. This condition MUST be corrected immediately.

Lifting Flames: Lifting flames can be caused by over firing the burner(s) or excessive primary air.

If improper flame is observed, examine the venting system, ensure proper gas supply and adequate supply of combustion and ventilation air.

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ceramic fibers in this appliance to cristobalite.

The ceramic fiber material used in this appliance is an irritant; when handling or replacing the ceramic materials it is advisable that the installer follow these safety guidelines:

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Lochinvar 45,000 - 260,000 BTU/HR Check All Wiring, Check Control Settings, Perform Start-up and Checks, Combustion Air
Page 45 Page 47

45,000 - 260,000 BTU/HR specifications

Lochinvar, a leader in high-efficiency heating solutions, presents the Lochinvar line of boilers, specifically the Lochinvar 45,000 - 260,000 BTU/HR models. These boilers are designed to meet a wide range of heating demands, making them ideal for residential and commercial applications alike.

One of the key features of the Lochinvar boilers is their impressive efficiency rating. Utilizing advanced condensing technology, these units can achieve efficiencies of up to 96% AFUE (Annual Fuel Utilization Efficiency). This high efficiency not only reduces fuel consumption but also lowers utility bills, making it a cost-effective solution for heating needs.

The Lochinvar boilers are equipped with a powerful heat exchanger constructed from durable stainless steel. This design not only maximizes heat transfer but also enhances the longevity of the unit. By preventing corrosion and minimizing maintenance requirements, the stainless steel heat exchanger ensures that the boiler operates at peak performance for years.

Another significant aspect of the Lochinvar boilers is their modulating burner system. This technology allows the boiler to adjust its output based on demand, ensuring that it only uses the energy necessary to maintain the desired temperature. This feature not only improves efficiency but also contributes to a more comfortable indoor environment by minimizing temperature fluctuations.

The Lochinvar series also showcases a user-friendly control interface. The advanced LCD display allows for easy monitoring and adjustment of system settings. Connectivity options are often included, providing the ability to integrate with modern building management systems for enhanced control and diagnostics.

Safety features abound in the Lochinvar models, which include built-in safeguards such as temperature and pressure relief valves, flame detection systems, and modulation cut-off to protect against overheating and other hazardous conditions.

Moreover, these boilers are designed for easy installation and maintenance. Compact dimensions and lightweight design facilitate straightforward setup, even in tight spaces. Additionally, users can take advantage of the unit’s self-diagnostic capabilities to simplify troubleshooting and reduce downtime.

In conclusion, the Lochinvar 45,000 - 260,000 BTU/HR boilers represent a pinnacle of innovation in heating technology. With high efficiency, advanced control systems, durable components, and safety features, they stand out as reliable and effective solutions for a variety of heating applications, ensuring comfort and efficiency in any environment.