Laarsen Associates LG, LD operation manual 2C. Site Location, 2C-1. Installation Information

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Model LG & LD Pool and Spa Heater

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Notes:

1.An Underwriters' Laboratories listed vent cap is required to prevent downdraft and allow the heater to function properly and safely.

2.Use approved roof jack.

Figure 2. Indoor Installation Venting (USA), or Outdoor Shelter (Canada).

Table 1. Air Openings to Outside.

Required Net Free Open Area for Combustion Air Openings

	Direct from outside		Duct from outside

Model	in2	(cm2)	in2	(cm2)
125	32	(206)	64	(413)

175	44	(284)	88	(568)

250	63	(406)	126	(813)
325	82	(429)	164	(1058)

400	100	(645)	200	(1290)

Note: If using screens and/or louvers, compensate by adding 50% additional area to each opening.

When a drafthood is used, it must be connected to a vent pipe which stops at least 2 feet (0.61 meters [m]) above the highest point of the roof or other object that is within 10 feet (3.05 m) from the vent termina- tion. The vent pipe must have a listed vent cap which allows a full equivalent opening for flue products (see Figure 2).

2C. Site Location

WARNING

Improper installation or maintenance can cause nausea or asphyxiation from carbon monoxide in flue gases which could result in severe injury, or death.

2C-1. Installation Information

Avoid placing the heater in locations where it can cause damage by water or condensate leakage. If this is not possible, provide a suitable drain pan to catch and divert any leakage. The pan must not block natural flow of air around the heater.

Locate the heater so the clearances from combus- tible surfaces shown in Table 2 are met.

Table 2. Minimum Heater Clearances From Combustible Surfaces

Indoor (Outdoor Shelter) Installation

Outdoors Installation

	U.S.			Canada		U.S.		Canada
Side of Heater	inch	(cm )	inch	( cm )	inch	(cm )	inch	(cm )
Blank	6	( 15.2 )	6	(15.2 )	6	( 32 )	6	(15.2 )
Rear	6	( 15.2 )	6	(15.2 )	6	( 32 )	6	(15.2 )
Piping	12	( 30.5 )	18	(45.7 )	12	(30.5)	18	(45.7 )
Top	44	(111.7 )	44	(111.7 )		Open Unroofed Area
Front	18	( 45.7 )	36	(91.4 )	18	(45.7 )	36	(91.4 )

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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.

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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.