Laarsen Associates LG, LD 2G-7. Automatic Flow Control Valve, 2G-8. Temperature Rise

Page 16

Page 14

WATERPIK TECHNOLOGIES INC.

 

 

a) Model LD Temperature Control

b)Model LG Temperature Control

Figure 18. Temperature controls.

Figure 19. Pressure switch adjustment.

NOTE: Heater should not be allowed to fire on low speed.

4.Turn rotary switch (LD) or rocker switch (LG) to ON. Heater should start.

5.Pry out the top rubber dust plug on the top of the pressure switch.

6.Use a 7/32 inch (5.55 mm) Allen wrench to turn the adjustment screw very slowly clockwise until the heater goes off (see Figure 19).

7.Slowly turn the pressure switch adjustment screw counterclockwise one-quarter turn. The heater should come back on.

8.Check the adjustment by turning the filter pump OFF. The heater should shut off immediately. If it does not, restart the filter pump and repeat Steps 6 and 7. Check the adjustment again.

9.Return the pool temperature control to the desired temperature.

2G-7. Automatic Flow Control Valve

The automatic flow control valve maintains the proper flow through the heater at rates up to approxi- mately 125 Gallons Per Minute (GPM) (474 liters per minute [LPM]). If the system filter-flow rate is higher than approximately 125 GPM (474 LPM), install a manual bypass valve (see Figure 20), then perform a temperature rise test (see Section 2G-8) and adjust the flow using the bypass valve until the proper tempera- ture rise is obtained.

2G-8. Temperature Rise

A temperature rise test confirms proper water flow through the heater. The temperature rise is the difference between the temperature of the pool or spa water before and after heating, as measured in the header. Perform the following temperature rise test when the installation is complete:

1.Make sure the pool filter is clean.

2.Set the rotary switch (LD) or rocker switch (LG) on the temperature control panel (see Figure 18) to OFF.

3.Turn the filter pump off.

4.Remove the drain plug located on the inlet/outlet header of the heater and replace it with a Pete's plug (see Figure 17).

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

6.Turn the filter pump on and wait 3 minutes. The heater remains off. This allows water from the pool to reach the heater.

7.Record the temperature indicated by the ther- mometer (cold water).

8.Turn the heater ON following the lighting in- structions found on the inside of the heater.

9.Allow the heater to run for about 3 minutes. Record the new temperature reading (heated water).

10.Subtract the first temperature reading (cold water) from the second temperature reading (heated water). The difference between the two readings is the temperature rise. The temperature rise should be within the range shown in Table 6.

Table 6. Temperature Rise and Minimum Flow Rates

 

Minimum

Minimum

Maximum

 

 

 

 

 

 

 

Size

GPM

(LPM)

°F

(°C)

°F

(°C)

 

 

 

 

 

 

 

125

20

(76)

27

(15)

36

(20)

175

20

(76)

33

(19)

42

(24)

250

25

(95)

33

(19)

42

(24)

325

30

(114)

28

(16)

38

(21)

400

30

(114)

30

(17)

39

(22)

 

 

 

 

 

 

 

Page 15 Page 17
Image 16
Page 15 Page 17
Contents Installation Laars Lite Pool and Spa Heater Outdoor Use OnlyTable of Contents Section 1A. Introduction1C. Warranty 2B. Field Assembly1B. Description 1D. Technical Assistance2C-1. Installation Information 2C. Site Location2C-2. Outdoor Installation 2C-3. Flooring Typical 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 2F-2. Auxiliary Time Clock Wiring Onnection Iagram2G. Water Flow System 2G-1. Flange Installation2F-3. Remote Operation Model LD Only Piping installation 2G-2. Reversible Water ConnectionsFlue collector hold-down brackets 2G-3. Check Valve Installation 2G-4. Chlorinators, Ozone Generators Sanitizing Chemicals2G-4a. Water Chemistry 2G-6. Adjusting the Pressure Switch2G-5. Pressure Relief Valve 2G-8. Temperature Rise 2G-7. Automatic Flow Control Valve2G-9. Adjusting the Manual Bypass Valve Typical installation3B. Lighting and Shutdown Procedures 3C. Setting the Temperature Control3A. General Information 3B-1. Model LD see 3B-2. Model LG see3B-1. Model LD Direct Ignition Do not try to light any appliance3B-2. Model LG Standing Pilot What to do if YOU Smell GAS3D. Seasonal Care 3D-1. Spring and Fall Operation3D-2. Winterizing 3D-3. Spring Start-up3E. Water Chemistry 3F. Spa/Hot Tub Safety Rules3G. Swimming Pool Energy Saving Tips 4B. Parts List 3H. Periodic Inspection4A. 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.
Top Page Image Contents