Table CC, Maximum Flow for Heating Boiler

The automatic bypass system allows part of the boiler discharge water to be mixed with the inlet water to the primary heat exchanger to increase the boiler inlet temperature above 130°F (55°C). This will prevent the products of combustion from condensing on the primary heat exchanger. Avalve must also be provided on the boiler discharge, after the bypass. Closing this discharge valve sets the maximum flow through the appliance. (See Bypass—Initial Set-up of Maximum Water Flow for more details.)

A minimum water temperature of 50°F (10°C) has been established for each boiler based on the Btu/hr input at 100% of rated burner input. The temperature set point for the Excel 10 controller sensing system must not be set lower than the specified minimum for each model. Maintaining inlet water temperatures to the boiler equal to or higher than the specified minimum set point ensures proper operation of the bypass and allows all condensate formation to occur on the secondary heat exchanger. A boiler allowed to sustain operation at water temperatures lower than the specified minimum set point may not provide enough heat from the burner to maintain water temperatures in the primary heat exchanger above the 130°F (55°C) dew point of flue products. Operation of a boiler at a temperature below the specified minimum set point will result in non-warrantable operational problems from the condensate formation on the primary heat exchanger.

TABLE - CC

Minimum Inlet Water Temperatures

THREE WAY VALVES

The installation of a three way valve on this boiler is not recommended because most piping methods allow the three way valve to vary flow to the boiler. This boiler is a low mass, high efficiency unit which requires a constant water flow rate for proper operation. Low flow rates can result in overheating of the boiler water which can cause short burner cycles, system noise, relief valve discharge and in extreme cases, a knocking flash to steam. These conditions can cause operational problems and non- warrantable failures of the boiler.

MAXIMUM FLOW FOR

HEATING BOILER

CAUTION

The maximum flow rate through the boiler with a copper heat exchanger must not exceed the following:

Btu/hr Input	Maximum Flow

1,500,000 - 2,000,000	90 GPM

If higher flow rates are required through the boiler, an optional Cupro-Nickel heat exchanger is available. Consult the factory for specific application requirements.

Input		Minimum Return
Btu/hr		Temperature

1,500,000		50°F (10°C)
_________		__________________
1,700,000		50°F (10°C)
_________		__________________
2,000,000		50°F (10°C)

Minimum Setpoint

105°F (40.6°C)

______________

90°F (32.2°C)

______________

70°F (23.9°C)

The heat exchanger is capable of operating within the design flow rates for the boiler secondary loop requirements. Erosion of the finned copper tubes may occur if the flow rate exceeds the maximum allowable flow rate through the boiler. The maximum flow through the boiler must be adjusted with the bypass valve in the full closed position. Maximum flow is 90 GPM. Flow rate can be determined by measuring the temperature rise through the boiler when it is firing at full rate input. See Bypass-Initial Setup for adjustment procedure.

CAUTION

A boiler allowed to operate at set point temperatures below the specified minimum settings may experience operational problems with the operating controls and safety switches, obstruction of the flue gas passages on the primary heat exchanger, incomplete combustion and possible flue gas spillage. Operation at lower than specified water temperatures may cause hazardous conditions that result in non-warrantable damage to the appliance.

BOILER TEMPERATURE

RISE CHART

TABLE - DD

Temperature Rise at Full Rate Fire

Bypass Fully Closed and 90 GPM Flow

Btu/hr Input		Temperature Rise

1,500,000		31.5°F (17.5°C)
_______________________		________________________
1,700,000		35.7°F (19.8°C)
_______________________		________________________
2,000,000		42.0°F (23.3°C)

000, 000 through 2, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.

Lochinvar 000 through 2, 1 Table CC, Maximum Flow for Heating Boiler, Btu/hr Input Maximum Flow

Models: 000 000 through 2 1