Teledyne LLG, LLD dimensions 2E. Gas Supply and Piping, 2E-1. General Instructions

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Model LLG & LLD Pool and Spa Heater

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burners must be 18 inches (457 mm) above the garage floor. Refer to the latest edition of the National Fuel Gas Code for more information. In Canada, refer to the latest edition of the Gas Installation Code, CAN/CGA B149.

Caution

Manual Shutoff

Valve

Gas Supply

Do not operate this heater outdoors at temperatures below 20 degrees Fahrenheit

Inlet

Union

(°F) (-7 degrees Celsius [°C]).

2E. Gas Supply and Piping

2E-1. General Instructions

Review the following general instructions before continuing the installation.

WARNING

Do not convert this heater from natural gas to propane gas, or propane to natural. Field conversion could create carbon monoxide gas which can cause property damage, serious injury, or death.

1.Gas piping installation must be in accordance with the latest edition of ANSI Z223.1. In Canada, the installation must be in accordance with CAN- B149.1 or .2 and all local codes that apply.

2.Check the rating plate to make sure the heater is fitted for the type of gas being used. Teledyne Laars heaters shipped from the factory are certified to operate at an altitude of 0 to 2000 feet (0 to 609 m), or if so ordered, at higher altitudes. In the United States, the heater manifold is marked with a tag or sticker indicating one of the following high altitude operation codes:

a.High altitude (H) - 2,000 to 6,000 feet (609 to 1829 m)

b.High altitude (J) - 6,000 to 10,000 feet (609 to 3048 m)

3.In Canada, the heater rating plate is marked for specific altitude requirements: high altitude (H) is 2,000 to 4,500 feet (609 to 1372 m) above sea level.

4.Use the figures in Table 3 to size the gas inlet piping from the gas meter to the heater. Check all local codes for compliance before installing the heater.

T-Fitting

 

 

To

3" Min.

Nipple

Equipment

Inlet

Cap

Figure 5. The proper design for a sediment trap / drip leg.

5.Install a sediment trap (drip leg) ahead of the gas controls (see Figure 5). Fit the trap with a threaded cap which can be removed for cleaning.

6.Install a manual gas shutoff valve for service and safety. Do not use a restrictive gas cock. DO NOT USE GAS FLEXIBLE PIPING.

7.Disconnect the heater and its individual shutoff valve from the gas supply system during pressure testing of the system at pressures higher than 1/2 pounds per square inch (psi) (3.45 kilopascals [kPa]). If the test pressure is equal to or less than 1/2 psi (3.45 kPa), close the manual shutoff valve on the heater during the piping pressure test.

Table 3. Natural Gas Pipe Size Requirements

Distance from Gas Meter

 

0-50 feet

50-100 feet

100-200 feet

Heater

(0-15 m)

(15-30 m)

(30-60 m)

 

 

 

 

 

 

 

 

Size

in.

(mm)

in.

(mm)

in.

(mm)

125

3/4

(19)

1

(25.4)

1

(25.4)

 

175

1

(25.4)

1

(25.4)

1-1/4

(31.75)

 

250

1

(25.4)

1-1/4

(31.75)

1-1/4

(31.75)

 

325

1-1/4 (31.75)

1-1/4

(31.75)

1-1/2

(38)

 

400

1-1/4 (31.75)

1-1/2

(38)

1-1/2

(38)

 

 

 

 

 

 

 

 

 

Notes:

1. These numbers are for natural gas (0.65 Sp. Gr.) and are based on 1/2 inch (13 mm) water column pressure drop. Check supply pressure with a manometer, and local code requirements for variations. For liquefied petroleum gas, reduce pipe diameter one size, but maintain a 3/4 inch (13 mm) minimum diameter.

2. Check supply pressure and local code requirements before preceding with work.

3. Pipe fittings must be considered when determining gas pipe sizing.

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Contents 1A. Introduction Section2B. Field Assembly 1C. Warranty1B. Description 1D. Technical Assistance2C. Site Location 2C-1. Installation Information2C-2. Outdoor Installation 2D. Combustion and Ventilation Air Supply 2C-3. Flooring Typical InstallationUnited States Canada2E-1. General Instructions 2E. Gas Supply and Piping2E-2. Special Precautions for Propane Gas LLG Only 2F. Electrical Wiring2F-2. Auxiliary Time Clock Wiring LLD or LLG 2F-1. General Information LLD OnlyLLD Connection/Schematic Wiring Diagram LLG Connection/Schematic Wiring Diagram 2G. Water Flow System 2G-1. Flange InstallationHeat exchanger reversal 2G-2. Reversible Water ConnectionsTemperature sensing bulb 2G-6. Adjusting the Pressure Switch 2G-3. Check Valve Installation2G-4. Chlorinators, Ozone Generators Sanitizing Chemicals 2G-5. Pressure Relief Valve2G-7. Automatic Flow Control Valve 2G-8. Temperature Rise2G-9. Adjusting the Manual Bypass Valve 3B. Lighting and Shutdown Procedures3A. General Information 3B-1. Model LLD see 3B-2. Model LLG seeDo not try to light any appliance 3B-1. Model LLD Direct IgnitionWhat to do if YOU Smell GAS 3B-2. Model LLG Standing Pilot3D. Seasonal Care 3C. Setting the Temperature Control3D-1. Spring and Fall Operation 3D-2. Winterizing3D-3. Spring Start-up 3F. Spa/Hot Tub Safety Rules3E. Water Chemistry 3H-1. Owner Inspection 3G. Swimming Pool Energy Saving Tips3H. Periodic Inspection 3H-2. Professional Inspection 4B. Parts List4A. General Information LLD Direct Ignition **-LLG Standing Pilot See For detail Detailed view of LLD Burner Tray Assembly E Detailed view of LLG Burner Tray Assembly EDetailed view of Heat Exchanger Assembly D Page Laars Lite Limited Warranty

LLD, LLG specifications

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