Zodiac Jandy LXi User Manual Download

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H0286900 R

ev N

Jandy

®

LXi

™

Gas-Fired Pool

and Spa Heater

by Zodiac

MODEL ZODIAC LXI
NATURAL GAS AND LP

INSTALLATION AND

OPERATION MANUAL

ENGLISH

WARNING

FOR YOUR SAFETY: This product must be installed and serviced by a contractor who is licensed and qualified

in pool equipment by the jurisdiction in which the product will be installed where such state or local requirements

exists. In the event no such state or local requirement exists, the installer or maintainer must be a professional with

sufficient experience in pool equipment installation and maintenance so that all of the instructions in this manual

can be followed exactly. Before installing this product, read and follow all warning notices and instructions that

accompany this product. Failure to follow warning notices and instructions may result in property damage, personal

injury, or death. Improper installation and/or operation can create carbon monoxide gas and flue gases which can

cause serious injury, property damage, or death. For indoor installations, as an additional measure of safety, Zodiac

Pool Systems, Inc. strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this

appliance and in any adjacent occupied spaces. Improper installation and/or operation will void the warranty.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other

appliance.
WHAT TO DO IF YOU SMELL GAS
  •  Do not try to light any appliance.
  •  Do not touch any electrical switch; do not use any phone in your building.
  •  Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
  •  If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.

If these instructions are not followed exactly, a fire or explosion may result,

causing property damage, personal injury, or death.

LP Gas for Indoor/Outdoor Use

Please refer to Section 4.3 of this manual for

precautions when installed indoors.

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Summary of Contents for Jandy LXi

Page 1: ...e gas and flue gases which can cause serious injury property damage or death For indoor installations as an additional measure of safety Zodiac Pool Systems Inc strongly recommends installation of suitable Carbon Monoxide detectors in the vicinity of this appliance and in any adjacent occupied spaces Improper installation and or operation will void the warranty Do not store or use gasoline or othe...

Page 2: ......

Page 3: ...llation 18 5 3 Automatic Flow Control Valve 18 5 4 Reversible Water Connections 18 5 5 Connections at Heater 20 5 6 Pressure Relief Valve and Temperature Relief Valve 22 5 7 Auxiliary Components Chlorinators Ozone Generators and Sanitizing Chemicals 23 Section 6 Electrical 23 6 1 General Information 23 6 2 Main Power 23 6 2 1 Converting the Heater for a 120V Power Source 25 6 3 Bonding 25 6 4 Opti...

Page 4: ...43 10 3 Heater Components and Their Operation 43 10 4 Special Service Issues Premix Combustion System 44 10 4 1 System Operation 44 10 4 2 Field Service and Adjustment 44 10 4 3 Burner Throat Pressure Adjustment 45 10 5 Electrical Troubleshooting 45 10 5 1 Electrical Power Supply 45 10 5 2 Controller 46 10 5 3 Control Circuit Troubleshooting 46 10 5 3 1 Transformer 46 10 5 3 2 Fuse 46 10 5 3 3 Wat...

Page 5: ...1 Spa Hot Tub Safety Rules WARNING The following Safety Rules for Hot Tubs recom mended by the U S Consumer Product Safety Commission should be observed when using the spa AVERTISSEMENT Les Règlements suivants pour Cuves Thermales tel que recommandés par la Commission U S de Sécurité des Produits pour les Consommateurs devraient être respectés lors de l utilisation du spa WARNING The U S Consumer ...

Page 6: ...luded with this heater Make all warranty claims to a Zodiac dealer or directly to the factory Claims must include the heater serial number and model this information can be found on the rating plate installation date and name of the installer Shipping costs are not included in the warranty coverage The warranty does NOT cover damage caused by improper assembly installation operation or field modif...

Page 7: ...ny vent pipe needed for indoor installations in the USA and outdoor shelter installations in Canada see Section 3 3 2 A vertical vent collar comes with the unit A side vent kit is available from your Zodiac distributor 2 Primer and cement suitable for cementing CPVC pipe to PVC pipe and an appropriate coupling for connecting the factory supplied CPVC pipe nipples to PVC pool plumbing 3 A noncombus...

Page 8: ...es and Gas Fired Appliances For Use At High Altitudes CAN1 2 17 in Canada When an LXi heater is to be installed in a high altitude application the burner throat pressure will need to be adjusted to achieve 1 0 WC See Section 10 4 3 for instructions on how to do this 1 7 2 Dimensions See Figure 1 for a diagram showing the heater s exterior dimensions and dimensions to critical connec tions on the h...

Page 9: ...the appropriately sized exhaust vent Check the rating plate on the heater or the Parts List Section 11 2 in this manual for the correct Zodiac vent collar part number For specific installa tion information see Section 2 3 5 Indoor and Outdoor Shelter Installations Water connections are provided on the right side of the heater but can be changed to the left side by reversal of the heat exchanger It...

Page 10: ...ce when there is a platform under the heater made of hollow masonry no less than four 4 inches 102 millimeters mm thick covered with sheet metal at least 24 gauge thick and extending be yond the full width and depth of the heater by at least six 6 inches 153 mm in all directions The masonry must be laid with ends unsealed and joints matched to provide free circulation of air from side to side thro...

Page 11: ... Figure 3 Outdoor Heater Installation If the heater is installed close to a structure pro tect it from rain water runoff with rain gutters on the roof or other measures Do not locate the heater near irrigation sprinkler systems that could spray water on it Water from sprinklers may cause damage to controls and electronic components In Florida it is required that the heater be secure ly fastened to...

Page 12: ...lation Code CAN CSA B149 1 are not sufficient for safe and proper operation of the LXi heaters Combustion air openings must be followed per the requirements of ANSI Z223 1 NFPA 54 and Table 3 In general these requirements specify that the room in which a heater is installed should be provided with two 2 permanent air supply openings one 1 within 12 inches 305 mm of the ceiling the other within 12 ...

Page 13: ...rately Table 3 Air Openings to Outside NOTE Except for the combustion air openings requirements in Canada follow Canadian Standard CAN CSA B149 1 or local codes Follow the requirements of Table 3 for the minimum combustion air openings required Exhaust Fans or Vents Any equipment which exhausts air from the room where the heater is installed can deplete the combustion air supply or reverse the nat...

Page 14: ...ng codes may also need to be followed 2 In Canada CAN CSA B149 1 In all installations avoid terminating heater vents near air conditioning or air supply fans The fans can pick up exhaust flue products from the heater and return them inside the building creating a possible health hazard Do not locate the vent terminal where flue prod ucts could strike against building materials and cause degradatio...

Page 15: ...to be appro priate for the LXi heater Replace any parts that are not in good and serviceable condition with new parts before completing the pool heater installation foot 2 cm m The LXi is designed for Category III venting with a maximum of 25 ft 7 6 m of vent pipe and up to three 3 elbows For each additional elbow reduce the maximum vent pipe length by 10 ft 3 m See Table 4 for the minimum vent di...

Page 16: ...pas les procédures suivantes 3 Use the figures in Table 5 to size the gas inlet piping from the gas meter to the heater Check all local codes for compliance before installing the heater Distance from Gas Meter Heater Size 0 50 feet 0 15 m 50 100 feet 15 30 m 100 200 feet 30 60 m in mm in mm in mm 250 1 25 1 1 4 32 1 1 4 32 400 1 1 4 32 1 1 2 38 1 1 2 38 Notes 1 These numbers are for natural gas 0 ...

Page 17: ...t être de 9 WC The manifold pressure may be checked by con necting a manometer to the pressure port on the outlet side of the valve The pressure will be zero when the heater is not running When the heater is operating the manifold gas pressure should be 2 5 WC for natural gas heaters and 9 0 WC for LP gas heaters If the manifold pressure indicated above is not correct check the gas train for possi...

Page 18: ...onnected and re routed so this procedure must be done only by from LP gas cylinders and filling equipment Consult the National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition the Liquefied Petroleum Gas Code NFPA 58 latest edition the Natural Gas and Propane Installation Code in Canada CAN CSA B149 1 latest edition and any other local codes and fire protection authorities about specific installat...

Page 19: ...utside of the cabinet 6 Disconnect the two 2 WATER TEMP tem perature sensor leads from the Power Interface board in the raceway Clip any wire ties attached to the harness Pull the wires out of the cabinet so that they hang free from the header outside of the cabinet 7 Disconnect the yellow Water Press two pin connector from the Power Interface board in the raceway Clip any wire ties attached to th...

Page 20: ...in connector attached to the high limit switches back to the Power Interface board in the raceway Reconnect the blue Hi Limit two pin connector to the blue HiLimit connector on the Power Interface board 19 Route the wires that attach to the temperature sensor back to the Power Interface board in the raceway Reconnect the wires to the WATER TEMP terminals on the Power Interface board 20 Route the y...

Page 21: ... all shut off valves between the heater and the pool 5 Remove the drain plugs and drain the heater See Figure 15 NOTE Be sure to use 2 inch or 2 inch schedule 40 PVC pipe 6 Clean the cut ends of the pipe and both ends of the sweep elbow s with an appropriate NSF approved All Purpose cleaner primer Glue the sweep elbow s onto the cut pipe ends using an appropriate All Purpose NSF approved adhesive ...

Page 22: ...ecommended in all installations and is mandatory in any installation in which the water flow can be shut off between the heater outlet and the pool spa Some local codes may also require installation of a temperature relief valve Check with your local codes for requirements in your area The valve set ting should be in accordance with local codes The U S Product Safety Commission recommends that the...

Page 23: ...ials that are not compatible with high concentrations of ozone chlorine bromine or other sanitizing chemi cals Heater damage caused by excessive chemicals or improper ozonization is not covered by the Zodiac Pool Systems Inc warranty Be sure to adhere to the following When ozone is injected upstream of the heater install an offgas mixing chamber or an ozone bypass system between the heater and the...

Page 24: ...OR BL W BK TO PUMP STARTER CONTACTS IF USED TO COMBUSTION AIR LOUVER STARTER IF USED W FUSE R Y O BK Y O Y BK O BR Y BR Y R BL BK BK BK W BK BL BR Y BK BK BK BL O V GY BK BK PSW Y BK C NO NC Y BK COIL AIR TEMP O Factory Wired 24V Factory Wired 120V 240V BK BLACK BK Y BLACK WITH YELLOW TRACE BL BLUE BR BROWN G GREEN GY GRAY O ORANGE R RED V VIOLET W WHITE Y YELLOW Y BK YELLOW WITH BLACK TRACE H0287...

Page 25: ... of the ignition control on the raceway See Figure 22 2 Cut the plastic wire tie that is holding the volt age selector board in place and discard the wire tie Unplug the voltage selector board from the receptacle See Figure 23 3 Rotate the voltage selector board 180 and reinsert it into the receptacle so that the hole in the board is not visible Be sure that the board is securely seated in the rec...

Page 26: ...rature In order for the MAINTAIN TEMP feature to be functional a relay must be installed and a dedicated line from the pool pump time clock to the Maintain Temp Pump Relay is needed See Figure 24 The relay and pertinent instructions can be obtained by ordering Zodiac part number R0467200 6 5 Optional Remote Controls WARNING RISK OF ELECTRIC SHOCK WHICH CAN RE SULT IN SERIOUS INJURY OR DEATH Before...

Page 27: ...n to an AquaLink RS Control System or Remote TSTAT 2 Wire Connection An interrupt on off type remote can be connect ed as a Remote TSTAT as described in this section This type of remote control will turn the heater on or off but will not perform any other function This type of connection may be used to connect a Zodiac AquaLink RS Control System using any revi sion level programmed control chip Th...

Page 28: ...Zodiac Pool Systems Inc 800 822 7933 for information on the correct RS Control System to meet your needs To provide smart communication between the LXi and an AquaLinkRS PCB Board through a red four pin RS485 connector your PCB firmware must be Rev N or higher as shown in Figure 28 To deter mine the REV of the PCB firmware in your system refer to Table 7 and Figures 27 and 28 If your PCB firmware ...

Page 29: ...Multiplexing PCB kit must be used Call your distribu tor or Zodiac Pool Systems Inc to order the kit To connect the LXi to your RS control system refer to Figure 29 and follow the steps listed below 1 Turn off the power to both the heater and the RS control 2 Open the RS Power Center enclosure and remove the front dead panel NOTE Only an RS System with firmware revision N or higher will support th...

Page 30: ...en starting the heater keep your head and face well away from the burner area to prevent any risk of personal injury AVERTISSEMENT Pour votre sécurité personnelle lorsque vous mettez l appareil en marche tenez votre tête et votre vis age loin du brûleur pour éviter tout risque de bles sure NOTE If you need to install more than two 2 wires in each terminal order a Zodiac Multiplex PCB Kit which inc...

Page 31: ...r pump with the heater off long enough to completely clean the wa ter This will remove any installation residue from the water Clean the filter at the end of this operation be fore starting the heater Start the heater in accordance with the Operating Instructions section of this manual with particular attention to the lighting and shutdown instructions and temperature control operation The heater ...

Page 32: ... will display SET xxx Change the tem perature set point by pressing the Up or Down button until the desired set point is displayed After 5 seconds of inactivity the new set point is stored in memory 7 3 4 Spa Mode Normal Heat To enable the spa mode press SPA The associ ated left green LED indicator will light and the unit will display SET xxx Note XXX represents the current temperature setting on ...

Page 33: ...e spa will run Press POOL or SPA to exit the User Setup mode 7 4 4 Display Light Setup 1 Make sure the control is in the OFF mode 2 To enter the User Setup mode press and hold the MENU button for 5 seconds 3 To select display light setup use the Up or Down button to scroll through to display SELECT USER SETUP DISPLAY LIGHT Press the MENU button The SELECT DISPLAY LIGHT 2 MIN TIMEOUT default displa...

Page 34: ...r aucun appareil Ne toucher à aucun interrupteur ne pas utiliser le téléphone dans le bâtiment Appeler immédiatement la compagnie de gaz en utilisant le téléphone d un voisin Suivre les instructions données par celle ci Si l on n arrive pas à joindre la compagnie de gaz appeler les pompiers C Enfoncer et tourner le bouton de commande du gaz à la main uniquement Ne pas utiliser d outil Si le bouton...

Page 35: ... the switch to turn the heater off not on ATTENTION Le manocontact de pression d eau doit être réglé de façon à ce que l appareil cesse de fonctionner si la pompe s arrête Si le manocontact est réglé pour se fermer lorsque le débit d eau est trop faible l appareil risque de s endommager Réglez le mano contact pour qu il arrête l appareil et non pour qu il le mette en marche The pressure switch is ...

Page 36: ...Measurement BYPASS ADJUSTMENT SCREW THERMOMETER WITH PETE S PLUG system Flow is evaluated by determining the water temperature rise through the heat exchanger Before checking the temperature rise make sure that the pool filter is clean and that gas supply and manifold pressures are correct If necessary clean all components of the filter system Temperature rise is measured in the return header of t...

Page 37: ...r orifice The air pressure will increase as more of the air orifice is exposed The pressure should be adjusted to 1 0 WC See Section 10 4 Section 8 Maintenance 8 1 Water Chemistry The mineral content of swimming pool water increases daily due to natural evaporation and the addi tion of sanitizing chemicals If the mineral concentra tion in the pool gets too high the excess minerals will deposit on ...

Page 38: ... has drained from the heater check for mineral buildup in the openings 6 Use compressed air to blow out any standing water remaining in the heat exchanger 7 Inspect the gaskets on the drain plugs and rein stall plugs but do not tighten 8 Disconnect the pressure switch from the siphon loop copper tubing 9 Cover the vent grill so that snow will not accu mulate in the combustion chamber where it may ...

Page 39: ...way from any area that may be damaged by water 4 Be sure all combustion air and ventilation open ings are not blocked Check for spider webs and other debris inside the heater in the vents on all sides of the heater jacket and in the exhaust outlet especially after a long period of non use 8 3 2 Professional Inspection Inspections performed at least once a year by a qualified technician are require...

Page 40: ...n prob lems causes and solutions encountered when running the heater Most problems occur when the heater is being started for the first time after installation or at spring start up Careful installation and maintenance will help ensure years of trouble free use from your LXi heater Be aware that premix combustion systems of the type found in the LXi heaters have special character istics that affec...

Page 41: ...urner throat pressure adjust to 1 0 W C 6 Not enough heat A Inadequate gas supply B Low manifold gas pressure C Heater size inadequate D Temperature rise set incorrectly A Gas meter too small Gas line from meter to heater too small B Gas pressure on heater manifold should be adjusted to 2 5 W C Natural 9 0 W C Propane C Replace with heater of higher input D Adjust temperature rise according to Sec...

Page 42: ...ll out fusible link switch Refer to qualified service personnel 2 Identify and correct loose connections or replace vent temperature limit switch Refer to qualified service personnel FAULT CHECK IGN CONTROL 1 Broken split pinched or disconnected fan switch tubing 2 Fan not operating 3 Fan running slow or premature fan failure 4 Air flow restricted at intake or discharge 5 Oscillating pump pressure...

Page 43: ...c power supplies are not shut off and that time clocks are properly adjusted Also be sure that there is no blockage of the exhaust vent grill or rear louvers which supply combustion air to the burners 10 2 Premix Forced Draft Combustion System The LXi pool and spa heater has a forced draft combustion system incorporating special burners and a combustion blower The burners are of special design in ...

Page 44: ...ification of current passed through the flame Inadequate rectification indicates an unsatisfac tory flame condition The rectification signal can be measured by attaching the leads of a DC ammeter to the two pins on the connector of the ignition control labeled FC A wire harness available from Zodiac Pool Systems Inc makes it easier to attach the voltmeter leads The flame current should not be less...

Page 45: ...ill be referenced in the following sections Where test points are shown at circuit board con nectors the probe of the meter can be carefully pushed into the connector along side of the wire at the connec tion to be measured The electrical power supply can be checked with the heater not set to fire All other procedures need to be checked with power correctly supplied to the heater all external devi...

Page 46: ...are operational However verifying voltage at any of the numbered points in that circuit confirms that all prior components of the circuit are operational 10 5 3 1 Transformer Set the voltmeter to measure AC voltage Attach the black lead of the voltmeter to the terminal on the secondary side of the transformer with a yellow wire attached to it common This is test point 1 on Figure 37 Touch the free...

Page 47: ...g properly If there is no voltage one 1 of the limit switches is open 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 flow deficiency may be due to obvious problems such as a defective pump or blocked water filter Alternatively excessive water temperatu...

Page 48: ... WARNING The igniter power supply circuit board and some terminals of the ignition control utilize 120V or 240V power and require appropriate servicing precau tions Note that wires and terminals of these com ponents may be hot even when the component is not operating AVERTISSEMENT Le dispositif d allumage le circuit d alimentation électrique et certaines bornes de la commande d allumage utilisent ...

Page 49: ...IVERSAL CONTROLLER USER INTERFACE POWER INTERFACE BK O BL R AIR FLOW SWITCH GAS VALVE WATER TEMP SENSOR BL W BK TO PUMP STARTER CONTACTS IF USED TO COMBUSTION AIR LOUVER STARTER IF USED W FUSE R Y O BK Y O Y BK O BR Y BR Y R BL BK BK BK W BK BL BR Y BK BK BK BL O V GY BK BK PSW Y BK C NO NC Y BK COIL AIR TEMP O Factory Wired 24V Factory Wired 120V 240V BK BLACK BK Y BLACK WITH YELLOW TRACE BL BLUE...

Page 50: ...Heat Exchanger End Baffles 250 400 R0453503 05 4 Heat Exchanger Baffles 250 400 R0540203 05 5 Front Header w Hdwr Gskts All R0453600 6 By Pass Assy Complete All R0453700 7 Hardware and O rings Bypass All R0453800 8 Spring Bypass All R0453900 9 Coupling Nut Kit w O ring Set of two All R0454000 10 O ring Coupling Set of 2 All R0454100 11 Rear Header w Hdwr Gskts All R0454200 12 Gasket Header Front o...

Page 51: ...Top Assy Split Flue 250 400 R0495303 05 69 Front Support Door 250 400 R0459903 05 70 Housing Air Chamber 250 400 R0460003 05 71 Cover Air Chamber 250 400 R0460103 05 72 Cover Manifold All R0460200 73 Grommet Seal 2 All R0460300 74 Air Duct All R0460500 Components of ASME Certified Heat Exchanger 75 Heat Exch Tube Assy CuNi 250 400 R0477003 05 76 Header In Out Bronze 250 400 R0476603 05 77 Header R...

Page 52: ...Xi Model Pool and Spa Heater by Zodiac Installation and Operation Manual 11 3 General Exploded View 27 20 69 65 37 38 1 36 30 66 67 27 25 68 53 52 24 60 22 20 19 74 44 18 58 71 55 72 73 56 57 23 64 59 62 63 65 61 35 39 70 29 ...

Page 53: ...53 ENGLISH Installation and Operation Manual Jandy LXi Model Pool and Spa Heater by Zodiac 11 4 Detailed Exploded View 6 8 7 33 32 35 15 34 36 52 31 50 19 17 5 13 5 qty 2 9 11 13 2 3 12 40 41 42 16 12 9 43 4 ...

Page 54: ...e 54 ENGLISH Jandy LXi Model Pool and Spa Heater by Zodiac Installation and Operation Manual 80 81 87 84 42 43 87 82 33 33 78 83 38 85 86 79 12 4 2 3 75 12 77 78 11 5 Exploded View of Heat Exchanger Bronze ...

Page 55: ...Page 55 ENGLISH Installation and Operation Manual Jandy LXi Model Pool and Spa Heater by Zodiac Notes ...

Page 56: ...081 1 800 822 7933 www ZodiacPoolSystems com 2012 Zodiac Pool Systems Inc H0286900 Rev N 1201 ZODIAC is a registered trademark of Zodiac International S A S U used under license All trademarks referenced herein are the property of their respective owners ...

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