9 Start-up

Check/control water chemistry

￿CAUTION Do not use petroleum-based cleaning or sealing compounds in the boiler system.

Damage to elastomer seals and gaskets in the system could occur, resulting in substantial property damage.

Hardness less than 7 grains

1.Consult local water treatment companies for hard water areas (above 7 grains hardness).

Chlorine concentration less than 200 ppm

1.Do not fill boiler or operate with water containing chlorine in excess of 200 ppm.

2.Filling with chlorinated fresh water should be acceptable since drinking water chlorine levels are much lower.

3.Do not use the boiler to directly heat swimming pool or spa water.

Test/replace freeze protection fluid

1.For systems using freeze protection fluids, follow fluid manufacturer’s instructions.

2.Freeze protection fluid must be replaced periodically due to degradation of inhibitors over time. Follow all fluid manufacturer’s instructions.

Freeze protection (when used)

1.Determine freeze protection fluid quantity using system water content, following fluid manufacturer’s instructions. Boiler water content is listed on page 6. Remember to include expansion tank water content.

2.Local codes may require a backflow preventer or actual disconnect from city water supply.

3.When using freeze protection fluid with automatic fill, install a water meter to monitor water makeup. Freeze protection fluid may leak before the water begins to leak, causing concentration to drop, reducing the freeze protection level.

Installation & Operation Manual

Fill and test water system

1.Fill system only after ensuring the water meets the requirements of this manual.

2.Close manual and automatic air vents and boiler drain valve.

3.Fill to correct system pressure. Correct pressure will vary with each application.

a.The minimum cold water fill pressure for a commercial system is 12 psi (82.7 kPa).

b.Pressure will rise when boiler is turned on and system water temperature increases.

4.At initial fill and during boiler startup and testing, check system thoroughly for any leaks. Repair all leaks before proceeding further.

￿WARNING Eliminate all system leaks. Continual fresh makeup water will reduce boiler

life. Minerals can build up in the heat exchanger, reducing heat transfer, overheating the heat exchanger, and causing heat exchanger failure.

Purge air from water system

1.Purge air from system:

2.Open automatic air vent (diaphragm-type or bladder- type expansion tank systems only) one turn.

3.Open other vents:

a.Starting on the lowest floor, open air vents one at a time until water squirts out.

b.Repeat with remaining vents.

4.Refill to correct pressure.

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Lochinvar 3.5, 2.5 Start-up, Check/control water chemistry, Freeze protection when used, Fill and test water system
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3, 2, 3.5, 2.5 specifications

The Lochinvar 2, 3, 3.5, and 2.5 models are a standout lineup in the realm of commercial and residential water heating solutions. Known for their advanced technology and high efficiency, these units cater to a wide range of applications, ensuring optimal performance and reliability.

One of the key features of the Lochinvar models is their robust construction. Each unit is designed to withstand rigorous operational demands while providing excellent thermal efficiency. They are equipped with stainless steel heat exchangers, which offer superior resistance to corrosion and extend the lifespan of the equipment. This durability is essential for both commercial and residential settings where demand can vary significantly.

The Lochinvar 2, 3, 3.5, and 2.5 models utilize innovative control systems that enhance their operational efficiency and user convenience. The built-in Smart Control technology allows for easy monitoring and adjusting of system parameters, ensuring that users can maintain optimal performance with minimal effort. This feature is especially beneficial in commercial settings where large volumes of hot water are required, as it enables users to effectively manage their energy consumption.

Energy efficiency is another hallmark of the Lochinvar lineup. With high-efficiency ratings, these models help reduce energy costs significantly, making them an environmentally friendly option for heating water. The use of advanced combustion technology ensures that these units can deliver maximum heat output with minimal fuel consumption.

Additionally, the Lochinvar models are designed with safety and reliability in mind. They feature multiple safety controls and diagnostics that alert users to potential issues before they escalate, providing peace of mind. The integration of advanced venting options allows for flexible installation configurations, accommodating various building layouts and space requirements.

In summary, the Lochinvar 2, 3, 3.5, and 2.5 models define modern water heating technology with their combination of durability, efficiency, and advanced features. With their innovative design and user-friendly controls, they meet the demanding needs of both commercial and residential users, making them a top choice in the water heater market. Whether for new installations or replacements, these units deliver reliable performance and value.
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