7 Maintenance

SCH Collectors Installation & Operation Manual

￿WARNING

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the solar components. Failure to perform the service and maintenance could result in damage to the solar system. Failure to follow directions in the manual and component literature could result in severe personal injury, death or substantial property damage.

Fluid installation

Follow these installation procedures:

1.

Clean new or lightly corroded existing systems with a 1% or

 

2% solution of trisodium phosphate in water prior to the

 

installation of industrially inhibited propylene glycol fluid.

2.

Extensively corroded existing systems should be cleaned by

 

an industrial cleaning company and all corroded

 

components should be replace.

￿WARNING

The solar heating system should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the solar collection system explained in the following pages must be performed to assure maximum system efficiency and reliability. Failure to service and maintain the solar system could result in equipment failure.

3. Use only quality water in solution with the propylene

glycol fluid. Use water with low levels (less than 25 ppm) of

chloride and sulfate, and less than 50 ppm of hard water

ions (Ca++, Mg++). Distilled or deionized water is

recommended.

System design considerations

Avoid use of automatic water make-up systems to prevent undetected dilution of the propylene glycol and possible contamination of the water system.

￿WARNING

Turn off power to electrical components before any service operation on the solar system except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

Technical data

Typical Properties of Dowfrost HD Fluid*

Composition (% by weight)

 

Propylene Glycol

94

Performance Additives

6

These maintenance items must be performed annually to ensure proper operation of the solar collection system.

Address reported problems

1.Inspect any problems reported by the owner and correct before proceeding.

Color

Fluorescent Yellow

 

 

 

 

Specific Gravity

 

 

15/15°C (60/60°F)

1.053 - 1.063

 

 

 

 

pH of Solution

 

 

(50% glycol)

9.5 - 10.5

 

 

 

 

Reserve Alkalinity (min.)

15.0 ml

 

 

*Typical properties, not to be construed as specifications.

 

Complete sales specifications are available on request.

Freezing and boiling points of Aqueous Solutions

 

 

 

 

Freezing

% Glycol

Boiling

Temperature, °F

by Volume

Temperature, °F

 

 

 

26

10

212

 

 

 

19

20

213

 

 

 

8

30

216

 

 

 

-7

40

219

 

 

 

-28

50

222

 

 

 

42

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Lochinvar SCH-I-O operation manual Maintenance, Fluid installation, System design considerations, Address reported problems

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.