Jandy LG125 Installation And Operation Manual Download Page 37

Page: 37 / 40

Model LG Pool and Spa Heater

Page 35

WATER SYSTEM( (Continued)

Brass Nut (For Rod)

All

F0048400

By-Pass Valve Disc

All

R0011500

By-Pass Valve Control Cap (Iron)

All

10452200

By-Pass Valve Control Cap (Bronze)

All

10557400

Control Cap Bolts (2 Required)

All

F0041600

By-Pass Valve Spring, Purple

125

S0079900

By-Pass Valve Spring, White

175

S0061400

By-Pass Valve Spring, Red

250

S0061300

By-Pass Valve Spring, Blue

325

S0061200

By-Pass Valve Spring, Black

400

S0070100

By-Pass Valve Gasket

All

R0011400

Heat Exch. Tube Assy. (Incl. set of 18 gaskets)

125-400 R0018101-05

Heat Exchanger Baffle (8 Required)

125-400 10697401-05

Baffle Retainer

All

S0083900

Heat Exchanger Support Clip (2 Required)

All

10457000

Flow Restrictors (2 Required) (Not Shown)

125

S0000300

Heat Exchanger End Baffles (2 Required)

125-400 R0332301-05

FIREBOX COMPONENTS

Complete Combustion Chamber Assy.

125-400 R0316701-05

JACKET COMPONENTS

Door with Latch

125-400 R0343601-05

Jacket Assembly, Less Top Assembly

125-400 R0343501-05

Gap Closure, Inlet/Outlet

All

R0344300

Gap Closure, Return

All

R0344400

Button Plug, 1-3/4"

All

F0035300

Button Plug, 7/8"

All

F0032300

Button Plug, 2" (With hole for gas line)

All

F0056600

OPTIONAL COMPONENTS

Non Combustible Base

125-400 10521701-05

Pressure Relief Valve 3/4" NPT, 75 PSI

All

R0040400

Touch Up Spray Paint, Pewter

All

X0022700

Touch Up Spray Paint, Black

All

X0022900

Notes:
1. For altitudes 2,000 Ft above sea level, call factory for orifice size.
2. For altitudes 5,000 Ft above sea level, call factory for orifice size.

Key

Model Order

Description

Part No.

Jandy® is a trademark of Jandy Industries, Inc. All other brand names, product names or trademarks belong to
their respective holders.

Summary of Contents for LG125

Page 1: ...H0264600A InstallationandOperationData WARNING If these instructions are not followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasol...

Page 2: ...Generators and Sanitizing Chemicals 16 SECTION 6 Electrical Connection 6 1 Main Power 17 6 2 Bonding 17 6 3 Auxiliary Time Clock Wiring 17 SECTION 7 Operating Instructions 7 1 Normal Operation 17 7 2...

Page 3: ...Tubs recommended by the U S Consumer Product Safety Commission should be observed when using the spa WARNING The U S Consumer Product Safety Commission warns that elevated water temperature can be ha...

Page 4: ...specified on the back cover of thismanual Make all warranty claims to an authorized Jandy representative or directly to the factory Claims must include the heater serial number and model this informa...

Page 5: ...helter and Outdoor 2 MinimumClearanceFromCombustibleMaterial See Table 2 in Section 2 3 2 3 Gas Pipe Heater Gas Valve Connection Natural Gas 3 4 NPT LP Gas 3 4 NPT For diameter of gas line from meter...

Page 6: ...l application and installationprocedurescompletelybeforecontinuing theinstallation 2 2 Field Assembly The Lite2 heater is shipped from the factory with the top assembly in the low profile configuratio...

Page 7: ...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 aroun...

Page 8: ...ation Lite2 heaters can be installed in the low profile top configuration as received from the factory or with an optional high wind vent cap Locate the heater in an open unroofed area Do not install...

Page 9: ...0 91 m from vertical surfaces e g nearby buildings and walls The addition of a vent cap may be necessary In Florida it is required that the heater be se curely fastened to the equipment pad Use a siz...

Page 10: ...ly through an outside wall each opening should have a minimum free area of one square inch per 4 000 BTU h 1 2kW input of the total input rating of all appliances in the enclosed area If air is provid...

Page 11: ...be desirable to add a vent cap directly to the top of the heater In all cases vent pipes and caps must be of the same diameter as the exhaust outlet of the heater Approved vent caps may be obtained t...

Page 12: ...st be used be sure to carefully inspect the venting system to ensure that it is in good condition and continues to be appropriate for the Lite2 heater Replace any parts that are not in good and servic...

Page 13: ...ring the piping pressure test 7 If the gas supply pressure is less than required check for undersized pipe between the meter and the heater a restrictive fitting or an undersized gas meter Gas supply...

Page 14: ...your manom eter The pressure will be zero when the heater is not running When the heater is operating the manifold gas pressure should be 4 0 WC for natural gas heaters and 9 0 WC for LP gas heaters...

Page 15: ...header of the Lite2 comes equipped with an automatic flow control valve The automatic flow control valve maintains the proper flow through the heater at rates up to approximately 125 Gallons Per Minut...

Page 16: ...retainer bracket off the bulb flange and remove the bulb from the header see Figure 10 Pull pressure switch tube through the hole in the vestibule cover and into the vestibule controls compart ment t...

Page 17: ...tor are installed into the grooves on the front and rear combustion chamber heat shield panels Be sure the sheet metal panels are not pinching any wires 22 Attach the flue collector hold down clamps t...

Page 18: ...m any area occupied during servicing 5 7 Auxiliary Components Chlorinators Ozone Generators and Sanitizing Chemicals The Lite2 heater is manufactured with materials that are not compatible with high c...

Page 19: ...itch into the heater wires see Figure 16 1 Remove heater door 2 Remove the factory installed wire between terminals 1 and 2 on the terminal strip see Figure16 3 Connect the wires from the time clock a...

Page 20: ...Page 18 Figure 17 LG Connection Schematic Wiring Diagram...

Page 21: ...n the pool and that the surface level is above the skimmer or other inlet of the pool s filter system Confirm that pool water is flowing normally through the pool system and equipment With any new poo...

Page 22: ...F 21 C to 40 C Use an accurate pool thermometer to determine the best water temperature for your uses The Lite2 temperature control panel has a rocker switch to turn the heater on and off It also has...

Page 23: ...If pilot goes out repeat steps 1 through 6 TO SHUT OFF HEATER To shut off main burners turn gas control knob clockwise until it stops at PILOT For complete shut off press down slightly on knob while t...

Page 24: ...1 Set the control panel rocker switch to the OFF position see Figure 18 2 Set the Pool temperature control to the Max position 3 Turn filter pump on If a two speed pump is used make sure it is at high...

Page 25: ...y 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 dr...

Page 26: ...ment It is recommended to change the spa water every 60 days for light usage and every 30 days if usage is heavy Table 7 Chemical Concentration Levels Test Recommended Level Free Chlorine or 1 0 to 3...

Page 27: ...er or page 21 of this manual 8 3 Inspection and Service The Lite2 LG heater is designed and constructed heater to provide long performance life when installed and operated properly under normal condit...

Page 28: ...bove burner surface see Figure 22 7 Inspect the gas and electronic controls including the following a High temperature limit switch b Water pressure switch c Automatic gas valve d Fusible Link e Tempe...

Page 29: ...equate C Replace with heater of higher input 7 Heater pounding A Inadequate water flow A Check temperature rise between inlet and outlet heater or knocking through heater piping See section 7 6 for re...

Page 30: ...that there is no block age of the vent or louvers which supply combustion air to the burners 10 2 Natural Draft Combustion System The Lite2 model LG pool heater has an atmo spheric combustion system T...

Page 31: ...eater If this current is broken at any time the gas valve is immedi ately shut off and the heater stops firing This voltage is also used to activate the gas valve s pilot coil which allows gas to flow...

Page 32: ...ction 7 3 check the voltage reading between the PP terminal on the gas valve test point 1 and the TH terminal on the gas valve test point 17 If the meter shows less than 220mVDC then there is a proble...

Page 33: ...n This is normally due to excessive water temperature which should be thoroughly investigated before replacement of limit switches Excessive water temperature may be caused by low water flow Water flo...

Page 34: ...he internal contacts are working correctly The volt meter reading should drop to zero when the switch is OFF and return to at least 220mV when the switch is placed back in the ON position 10 4 7 2 Var...

Page 35: ...Model LG Pool and Spa Heater Page 33 Figure 24 Test Point Identification Diagram...

Page 36: ...000 67 Flange Sleeve 2 All S0078200 68 Flange Bolt All F0031700 69 Flange Gasket 1 1 2 2 All S0078100 70 Rubber Grommet for Drain Plug All R0316300 71 Grommet Slitted Not Shown All S0071100 72 Brass C...

Page 37: ...125 S0000300 88 Heat Exchanger End Baffles 2 Required 125 400 R0332301 05 FIREBOX COMPONENTS 89 Complete Combustion Chamber Assy 125 400 R0316701 05 JACKET COMPONENTS 90 Door with Latch 125 400 R03436...

Page 38: ...R TRAY SEE NEXT PAGE FOR DETAIL 44 45 46 54 48 47 49 50 53 UNITED STATES 70 70 73 73 89 90 91 92 93 94 95 96 HEAT EXCHANGER SEE NEXT PAGE FOR DETAIL TEMPERATURE CONTR0L SEE NEXT PAGE FOR DETAIL 19 34...

Page 39: ...e 37 16 14 7 6 8 5 2 4 15 17 32 26 74 85 43 42 69 41 38 39 68 65 67 66 78 81 76 94 79 33 24 25 37 64 75 3 11 18 12 40 36 35 72 77 80 13 1 58 86 84 85 63 60 63 62 83 57 60 61 62 59 61 56 27 28 22 21 23...

Page 40: ...se of non factory authorized parts or accessories in conjunction with the product s 8 Chemical contamination of combustion air or improper use of sanitizing chemicals such as introducing sanitizing ch...

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