SCH Collectors Installation & Operation Manual

7 Maintenance (continued)

Typical properties of Aqueous Solutions+ (Glycol percentage by volume)

Physical

Temp.

30% Glycol

 

40% Glycol

50% Glycol

Property

°F

Solution

 

Solution

Solution

 

 

 

 

 

 

Thermal

40

0.247

 

0.225

0.204

Conductivity

180

0.279

 

0.249

0.221

Btu/(hr•ft2)(°F/ft)

325

0.268

 

0.238

0.210

Specific Heat,

40

0.894

 

0.847

0.794

Btu/(lb•°F)

180

0.947

 

0.916

0.878

 

325

1.002

 

0.987

0.965

Viscosity,

40

5.75

 

9.63

14.28

Centipoise

180

0.68

 

0.85

1.08

 

325

0.31

 

0.39

0.40

Density,

40

65.30

 

66.03

66.68

(lb/ft3)

180

62.60

 

63.09

63.50

 

325

57.89

 

58.18

58.41

Solar circuit

 

Collector

 

 

1.Verify all system components are correctly installed and operational.

2.Check for leaks - inspect all water lines for signs of leakage and correct any problems found.

3.Check System Pressure - monitor system pressure as the circuit heats up (during testing) to ensure that the pressure does not rise above the designed system pressure. Excessive pressure rise indicates expansion tank sizing or performance problems. See the expansion tank manufacturer’s instruction manual for required maintenance. See the expansion tank manufacturer recommendations for sizing and pressure settings.

4.Check Relief Valve - Inspect the relief valve and lift the lever to verify flow.

Before operating any relief valve ensure ￿ WARNING that it is piped with its discharge in a safe

area to avoid severe scald potential.

5.Check Freeze Protection Fluid - ensure that the heat transfer fluid has the proper concentration of glycol as recommended in this manual.

6.Remove any air that may have accumulated in the system.

7.Check Flow Rate - ensure that the minimum recommended flow rate can be achieved as described in this manual.

8.Visually inspect the dirt separator (if installed) and clean if necessary.

1.Visually inspect the collectors to ensure that they are in proper working condition.

2.Visually inspect the collector substructure to ensure that no components have become loose or disconnected.

3.Visually inspect the collector piping to ensure that there are no leaks.

4.Visually inspect roof penetrations to ensure that environmental elements can not enter the building.

5.Visually inspect the piping insulation to ensure the proper orientation around piping.

Pump / control function

1.Check to ensure that the pump station is in working order and creates the minimum flow recommended in this manual.

2.Check control sensors to ensure that they are fully inserted into the appropriate sensing well.

3.See pump manufacturer’s recommendation for required maintenance procedure.

Control settings

1.Check sensor readings to ensure that the values being displayed are accurate.

2.Check control settings to ensure that they are programmed per the control specification.

3.See controller manufacturer’s recommendations for the

required maintenance procedure.

43

 

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Lochinvar SCH-I-O operation manual Solar circuit Collector, Pump / control function, Control settings
Page 42 Page 44

SCH-I-O specifications

Lochinvar SCH-I-O is a state-of-the-art water heater designed for both residential and commercial applications. This innovative unit is engineered to deliver high efficiency and robust performance while maintaining a compact footprint. One of its standout features is its advanced stainless steel construction, which not only enhances durability but also contributes to the overall efficiency of the heating process.

One of the key technologies utilized in the Lochinvar SCH-I-O is its Smart Control System. This intelligent control feature allows for precise temperature management and ensures optimal operation. The system utilizes a user-friendly digital display that provides real-time information on water temperature, pressure, and operational status. This level of control means less energy consumption and reduced operational costs for users.

The Lochinvar SCH-I-O also incorporates Lochinvar's patented "Copper Heat Exchanger" technology, which maximizes heat transfer while minimizing scale build-up. This innovation not only improves efficiency but also extends the lifespan of the unit. With its low NOx emissions, the SCH-I-O adheres to stringent environmental regulations, making it an eco-friendly option for water heating needs.

Another notable characteristic of this water heater is its configurable design. The SCH-I-O can be easily integrated into existing heating systems or used as a standalone unit, providing versatility for various applications. This means that whether you need it for a single-family home or a larger commercial facility, the SCH-I-O can be tailored to suit your needs.

In addition to its impressive performance metrics, the Lochinvar SCH-I-O is designed with safety in mind. It features multiple safety mechanisms, including high-temperature limit controls and a lock-out function to prevent unsafe operating conditions. These safety features, coupled with its reliable engineering, make the SCH-I-O a trusted choice for many heating professionals and property owners.

The Lochinvar SCH-I-O represents a significant advancement in water heating technology, combining efficiency, advanced control systems, and safety features into one powerful solution. As energy costs continue to rise, investing in such cutting-edge technology not only benefits users' wallets but also promotes sustainable environmental practices. With its robust capabilities, the SCH-I-O stands out as a leading option for dependable hot water heating solutions.
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