Laarsen Associates LG, LD 2G-9. Adjusting the Manual Bypass Valve, Typical installation

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Model LG & LD Pool and Spa Heater

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Note: When using metal pipe as heat sink, join metal and PVC/CPVC, using metal male and PVC/CPVC female connection.

Figure 20. Typical installation.

11.If the temperature rise is below the minimum range indicated, two possibilities arise:

a.The supply gas volume is too low.

b.The system's water flow exceeds 125 GPM (474 LPM), and requires a manual bypass valve for proper operation (see Figure 19).

12.If the temperature rise is above the maximum, there is not enough water flowing through the heater. Check for clogging in the water filter or restriction in the water pipes.

Caution

Operation with the temperature rise above maximum or below the minimum can damage the heater and may void the warranty.

13.If the temperature rise is within the correct range, complete the procedure as follows:

a.Turn heater off.

b.Wait 3 minutes, turn filter pump off.

c.Remove thermometer and Pete's plug.

d.Replace the drain plug.

2G-9. Adjusting the Manual Bypass Valve

After the manual bypass valve is installed, use the following procedures to adjust the bypass valve:

1.Clean pool filter.

2.Remove drain plug located on the inlet/outlet header of the heater and replace it with a Pete's plug.

3.Insert a pocket thermometer (see Figure 17) through the Pete's plug into the header.

4.Close manual bypass valve.

5.Turn rotary switch (LD) or the rocker switch (LG) on the temperature control to the OFF position.

6.Repeat steps 6 through 10 of the temperature rise test (see Section 2G-8).

7.If the temperature rise is below the minimum stated in Table 6, open the manual bypass valve until temp rise climbs between the min. and max. range for your size heater. If the minimum temperature rise stated in Table 6 cannot be reached with the manual bypass fully open, then the gas supply volume is too low.

8.If the temperature rise is above the maximum, there is not enough water flowing through the heater. Check for clogging in the water filter or restriction in the water pipes.

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Contents Outdoor Use Only Installation Laars Lite Pool and Spa HeaterTable of Contents 1A. Introduction Section2B. Field Assembly 1C. Warranty1B. Description 1D. Technical Assistance2C. Site Location 2C-1. Installation Information2C-3. Flooring Typical Installation 2C-2. Outdoor Installation2C-4. Indoor and Outdoor Shelter Installations United States2E-1. General Instructions 2D. Combustion and Ventilation Air Supply2E. Gas Supply and Piping 2F-1. General Information LD Only 2F. Electrical Wiring2E-2. Special Precautions for Propane Gas Model LD Wiring Diagram Onnection Iagram 2F-2. Auxiliary Time Clock Wiring2F-3. Remote Operation Model LD Only 2G-1. Flange Installation2G. Water Flow System 2G-2. Reversible Water Connections Piping installationFlue collector hold-down brackets 2G-4. Chlorinators, Ozone Generators Sanitizing Chemicals 2G-3. Check Valve Installation2G-5. Pressure Relief Valve 2G-6. Adjusting the Pressure Switch2G-4a. Water Chemistry 2G-7. Automatic Flow Control Valve 2G-8. Temperature RiseTypical installation 2G-9. Adjusting the Manual Bypass Valve3C. Setting the Temperature Control 3B. Lighting and Shutdown Procedures3A. General Information 3B-1. Model LD see 3B-2. Model LG seeDo not try to light any appliance 3B-1. Model LD Direct IgnitionWhat to do if YOU Smell GAS 3B-2. Model LG Standing Pilot3D-1. Spring and Fall Operation 3D. Seasonal Care3D-2. Winterizing 3D-3. Spring Start-up3G. Swimming Pool Energy Saving Tips 3F. Spa/Hot Tub Safety Rules3E. Water Chemistry 3H. Periodic Inspection 4B. Parts List4A. General Information 3H-1. Owner InspectionOrder Heat Exchanger See Next page for Detail Shown Model LG & LD Pool and Spa Heater Laars Lite Limited Warranty

LG, LD specifications

Laarsen Associates is a reputable engineering and consulting firm known for its innovative solutions in the field of energy and environmental management. Among its notable offerings are the LG and LD series of products, designed to optimize energy efficiency and reduce environmental impact in various applications.

The LG series focuses on providing high-performance tools for efficient energy management in commercial settings. These tools are engineered to integrate seamlessly into existing infrastructures, allowing businesses to monitor, control, and optimize their energy consumption effectively. One of the main features of the LG series is its user-friendly interface, which provides real-time data on energy usage, enabling users to make informed decisions quickly. Furthermore, the enhanced connectivity options facilitate remote access, allowing users to manage their systems from anywhere, significantly improving flexibility and response times.

On the other hand, the LD series is tailored for industrial applications, emphasizing durability and robust performance. The LD products are designed to withstand the harshest environments while maintaining consistent efficiency. Their advanced monitoring systems provide detailed insights into energy consumption patterns, allowing for predictive maintenance and reduced operational costs. Key characteristics of the LD series include high reliability, modular design, and adaptive technologies that can be customized to suit specific industrial requirements.

Both series employ cutting-edge technologies to achieve optimal performance. Smart sensors collect real-time data, which is processed using advanced algorithms to deliver actionable insights. These insights can lead to optimized processes, reduced energy wastage, and enhanced sustainability measures. Moreover, the integration of IoT capabilities allows for smarter energy systems that adapt in real time to changing conditions.

Sustainability is at the core of Laarsen Associates’ offerings. Both the LG and LD series are designed with a commitment to reducing carbon footprints and complying with global standards for environmental protection. Their features not only promote energy efficiency but also support clients in achieving their sustainability goals.

In conclusion, Laarsen Associates’ LG and LD series represent the forefront of energy management and environmental solutions. With their combination of user-centric design, advanced technology, and commitment to sustainability, these products pave the way for businesses and industries to navigate modern energy challenges effectively.