Boiler Operation

28.Turn the run/stop switch to the “RUN” position to start boiler operation.

29.Push the resets for low water level, high water temperature and flame failure.

30.Observe the boiler synchronization process before start-up of the boiler begins.

31.Boiler should begin the start-up process for the sequence of operation.

32.The boiler will fire at 50% of rated input on initial start-up and adjust input as required to meet system demand.

33.

The integral bypass valve will automatically

adjust

 

to maintain minimum inlet temperatures

to the

 

primary heat exchanger.

 

34.Ensure that inlet water temperature does not fall below the specified minimum for the boiler.

35.

Based on system demand, the

boiler may

run

for

 

an extended period of time at

a reduced

rate

of

 

input to maximize efficiency.

 

 

 

36.As system demand is satisfied, the burner will cycle off and the combustion air blower will run for a post purge operation before the boiler shuts down.

INSTALLATION WITH A

CHILLED WATER SYSTEM

EXPANSION

 

TANK

 

 

HEATING AND

 

COOLING COIL

GAS SUPPLY

PUMP

 

 

WATER

 

SUPPLY

 

CHILLER

FIG. 82 Installation with a Chilled Water System

Pipe refrigeration systems in parallel. Install duct coil downstream at the cooling coil. Where the hot water heating boiler is connected to a heating coil located in the air handling units which may be exposed to refrigeration air circulation, the boiler piping system must be equipped with flow control valves or other automatic means to prevent gravity circulation of the boiler water during the cooling cycle. The coil must be vented at the high point and hot water from the boiler must enter the coil at this point. Due to the fast heating capacity of the boiler, it is not necessary to provide a ductstat to delay circulator operation. Also, omit thermostat flow checks as the boiler is cold when heating thermostat is satisfied. This provides greater economy over maintaining standby heat.

BOILER OPERATING

TEMPERATURE CONTROL

The operating temperature control for the boiler is the Excel 10 controller. It is located on the back side of the front control panel, behind the front access door. Access to adjust the temperature set point and other owner/operator adjustable points is made through the Command Display located on the front control panel. The sensing element for the operator is placed in a bulb well installed in the inlet connection to the boiler. The outlet sensor is located in a bulb well on the outlet side of the primary heat exchanger top header. Carefully observe the discharge water temperature on the initial boiler on cycles. The location of the temperature sensor may generally require a lower temperature set point on the operating control to achieve the desired discharge water temperature from the boiler. The return/inlet sensing element location allows a boiler to sustain longer burner on cycles.

The location of the operating sensor, inlet or outlet, is selectable from the screen on the Command Display.

The exact temperature set point is based on your system’s requirements. Set the control set point(s) to the desired operating water temperature. Observe the boiler discharge temperature after each set point adjustment to ensure proper operation.

The maximum set point for operation of a heating boiler is 220°F (104.4°C) on a standard Excel 10 control. The minimum temperature setting programmed into this standard Excel 10 control is 100°F (37.7°C).

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Lochinvar 1, 000 warranty Installation with a Chilled Water System, Boiler Operating Temperature Control, Boiler Operation
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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.
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