Laarsen Associates LG, LD operation manual Flue collector hold-down brackets

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Model LG & LD Pool and Spa Heater

Page 11

 

 

 

 

1.Remove heater door.

2.If there is a vent cap or drafthood (indoor) on top of the heater, remove it.

3.Remove all 8 hex-head screws fastening the top and lift the top assembly straight up (see Figure 12).

4.Remove rainshield assembly and set it aside.

5.Remove screws that fasten the gap closures to the jacket and put them aside. Remove gap closures.

6.Remove the screws securing the two flue collec- tor hold down clamps and remove the clamps (see Figure 13). Remove flue collector.

7.Remove the three rubber jacket/plug grommets and drain plugs (see Figure 12). One is located under the water connections on the right side. The other two are on the left side toward the front of the heater.

8.Tag and disconnect the white wire on the pressure switch (PS) and the white wire on the Fireman's switch terminal (see Figure 6 or 7) which leads to the high limit switch.

9.Remove plastic tie wraps and pull the white wires out of the front compartment through the vesti- bule cover and coil them on the heat exchanger.

10.Unscrew the brass compression fitting securing the pressure switch to the inlet/outlet header. Remove tube from header and gently bend it out of the way.

11.Loosen the screw securing the temperature sensing bulb retainer bracket. Slide the retainer bracket off the bulb flange and remove the bulb from the header

H O LD D O W N

C LA M P

IN/O U T H E AD E R

B R AC K ET

Figure 13. Flue collector hold-down brackets.

(see Figure 14). Pull pressure switch tube through the hole in the vestibule cover and into the vesti- bule (controls compartment), then pull thermostat bulb assembly through same hole (see Figure 15).

12.When removing the heat exchanger from the heater, the end baffles of the heat exchanger must be removed. There are two baffles covering part of the front and rear tubes of the heat exchanger. Each baffle is held in place by two screws which mount to the top of the combustion chamber wall. Remove the screws and the baffles before at- tempting to lift the heat exchanger out of the heater (see Figure 16).

Caution

It may be necessary to have help lifting the

heat exchanger out and replacing it.

Figure 14. Temperature sensing bulb.

(U.S. MODELS

 

ONLY)

RIGHT

LEFT

VESTIBULE

VESTIBULE

COVER

COVER

FRONT

PLASTIC BUSHING

Figure 15. Vestibule covers.

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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. Gas Supply and Piping 2D. Combustion and Ventilation Air Supply2E-1. General Instructions 2E-2. Special Precautions for Propane Gas 2F. Electrical Wiring2F-1. General Information LD Only Model LD Wiring Diagram Onnection Iagram 2F-2. Auxiliary Time Clock Wiring2G. Water Flow System 2G-1. Flange Installation2F-3. Remote Operation Model LD Only 2G-2. Reversible Water Connections Piping installationFlue collector hold-down brackets 2G-4. Chlorinators, Ozone Generators Sanitizing Chemicals 2G-3. Check Valve Installation2G-4a. Water Chemistry 2G-6. Adjusting the Pressure Switch2G-5. Pressure Relief Valve 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-up3E. Water Chemistry 3F. Spa/Hot Tub Safety Rules3G. Swimming Pool Energy Saving Tips 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.
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