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ENGLISH

  

 

Installation and Operation Manual   

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   Jandy® Legacy™ Model LRZM Pool/Spa Heater by Zodiac®

Section 1.  General information

1.1 

introduction

This manual provides installation and operation 

instructions for the Legacy Model LRZ millivolt pool 

and spa heater. Read these installation and opera-

tion instructions completely before proceeding with 

the installation. Consult Zodiac Pool Systems, Inc., or 

local factory representative, with any questions regard-

ing this equipment. 

Certain sections of this manual are specific to 

either United States or Canadian installations, and are 

labeled as such. 

The Legacy model LRZ millivolt heater is a self 

contained standing pilot unit and requires no external 

power. 

The Legacy heater is specifically designed for 

heating fresh water swimming pools and spas, and 

with proper installation and care, they will provide 

years of reliable service. Do not use the heater to 

maintain pool or spa water temperature below 70°F. 

Do not use it as a heating boiler or general service 

water heater or to heat salt water. Consult your dealer 

for the appropriate Jandy products for these applica-

tions.

Note

  “Fresh water swimming pools and spas” 

include systems that utilize saltwater chlorine 

generator units, such as the Jandy AquaPure

®

 

Electronic Chlorine Generator. Please ensure 

that the salt content of the pool/spa 

does not 

exceed

 4000 ppm and water flow rate is within 

30-125 gpm (110-475 lpm).

1.2 

consumer information and Safety

The Legacy heater is designed and manufactured 

to provide many years of safe and reliable service 

when installed, operated and maintained according 

to the information in this manual and the installation 

codes referred to in later sections. Throughout the 

manual safety warnings and cautions are identified by 

the " " symbol. Be sure to read and comply with all 

of the warnings and cautions.

1.2.1  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 Product Safety Commission 

warns that elevated water temperature can be 

hazardous. Consult heater operation and installation 

instructions for water temperature guidelines before 

setting temperature.

 

 aveRtiSSeMeNt

La U.S. Consumer Product Safety Commission 

indique que des températures de l'eau élevées peu-

vent être dangereuses. Voir la notice d'installation 

et de fonctionnement pour le réglage de la tempéra-

ture.

1.  Spa or hot tub water temperature should never 

exceed 104°F (40°C). One hundred degrees 

Fahrenheit (100°F [38°C]) is considered safe for 

a healthy adult. Special caution is recommended 

for young children.

2.  The drinking of alcoholic beverages before or 

during spa or hot tub use can cause drowsiness 

which could lead to unconsciousness, and subse-

quently result in drowning.

3. 

Pregnant women take note! 

Soaking in water 

above 102°F (38.5°C) can cause fetal damage 

during the first three months of pregnancy (which 

could result in the birth of a brain-damaged or 

deformed child). If pregnant women are going 

to use a spa or hot tub, they should make sure 

the water temperature is below 100°F (38°C) 

maximum.

4.  The water temperature should always be checked 

with an accurate thermometer before entering a 

spa or hot tub. Temperature controls may vary by 

as much as 1F° (1C°).

5.  Persons with a medical history of heart disease, 

diabetes, circulatory or blood pressure problems 

should consult their physician before using a hot 

tub or spa.

6.  Persons taking any medication which induces 

drowsiness (e.g., tranquilizers, antihistamines, or 

anticoagulants) should not use spas or hot tubs.

7.  Prolonged immersion in hot water can induce 

hyperthermia.

Hyperthermia occurs when the internal body 

temperature reaches a level several degrees above the 

normal body temperature of 98.6°F (37°C). Symptoms 

include dizziness, fainting, drowsiness, lethargy, and 

an increase in the internal body temperature. The 

effects of hyperthermia include:
• 

Lack of awareness of impending hazard

Summary of Contents for Jandy Legacy LRZ Millivolt

Page 1: ...er 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 Zodia...

Page 2: ......

Page 3: ...17 5 4 Reversible Water Connections 17 5 5 Connections at Heater 19 5 6 Pressure Relief Valve 19 5 7 Auxiliary Components Chlorinators Ozone Generators and Sanitizing Chemicals 20 Section 6 Electrica...

Page 4: ...LRZM Pool Spa Heater by Zodiac Installation and Operation Manual Section 11 Replacement Parts 38 11 1 Ordering Information 38 11 2 Parts List 39 11 3 General Exploded View 41 11 4 Detailed Exploded Vi...

Page 5: ...erved when using the spa AVERTISSEMENT Les R glements suivants pour Cuves Thermales tel que recommand s par la Commission U S de S curit des Produits pour les Consommateurs devraient tre respect s lor...

Page 6: ...oad on filter systems 1 3 Warranty The Legacy heater is sold with a limited factory warranty Details are specified on the back cover of this manual Make all warranty claims to a Jandy dealer or direct...

Page 7: ...CPVC pipe nipples to PVC pool plumbing 3 A noncombustible platform for installation on combustible surfaces see Section 2 3 3 Noncombustible bases are available from your Jandy distributor 4 A factor...

Page 8: ...is manual local codes and ordinances and in accordance with the latest edition of the appropriate national code See Section 1 4 Codes and Standards All gas fired products require correct installation...

Page 9: ...on all sides for maintenance and inspection There must also be minimum distances maintained from combustible surfaces See Table 2 At least 18 inches 457mm access must be avail able in front of the hea...

Page 10: ...y a noncombustible panel 2 3 4 Outdoor Installation Legacy 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...

Page 11: ...e downdraft conditions exist locate the heater at least three 3 feet 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...

Page 12: ...B149 1 For combustion air supply openings however the requirements of Table 3 MUST be followed for safe and proper operation The minimum combustion air openings allowed in CAN CSA B149 1 are NOT suffi...

Page 13: ...vent pipe and 90 elbows reductions and restrictions Horizontal runs must have at least a 1 4 inch rise per foot 20mm per meter in the direction of flow These requirements are summarized in Table 3 Not...

Page 14: ...lled to replace an existing pool heater it is recommended that a new appropriate venting system be installed with the new heater However if an existing venting system must be used be sure to carefully...

Page 15: ...with water after testing ATTENTION Certaines solutions d essai d tanch it y compris l eau et le savon peuvent causer de la corrosion ou de la fissuration Rincez les tuyaux l eau apr s l essai d tanch...

Page 16: ...f provision for proper ventilation is not made Installation of pool heaters in enclosed areas such as pits is not recom mended Consult the National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition the...

Page 17: ...nd adjust the flow using the bypass valve until the proper temperature rise is obtained 5 4 Reversible Water Connections NOTE Reversing the header requires a longer syphon tube order part number R0483...

Page 18: ...the I O header side cover plates top and bottom See Figure 10 4 Remove the return header side cover plates top and bottom See Figure 10 5 Tag and disconnect the white wire on the pressure switch PS a...

Page 19: ...aded connection on the header See Figure 12 5 6 Pressure Relief Valve A pressure relief valve PRV is recommended in all installations and is mandatory in any installation in which the water flow can b...

Page 20: ...g may crack the header atteNtioN Afin d emp cher des d g ts mat riels ne serrez pas trop Le serrage excessif peut provoquer des fissures dans la t te DO NOT TIGHTEN WITH A WRENCH Overtightening may cr...

Page 21: ...s all electrical equipment in the system and on the equip ment pad Bonding lugs must be connected with a solid copper wire not smaller than 8 AWG 6 AWG in Canada Failure to do so will void warranty Ad...

Page 22: ...fin de course max 130 Pressure Switch Manostat Pilot Gen G n rateur de veilleuse Pilot Veilleuse Piezo Sparker tinceleur pi zo lectrique Fusible Link Maillon Fusible Fireman Switch Connection Montage...

Page 23: ...is operation before starting the heater Start the heater in accor dance with the Operating Instructions section of this manual with particular attention to the lighting and shutdown instructions and t...

Page 24: ...t to your preferences follow the instructions outlined on the following page as shown in Figure 18 Read and follow all safety instructions first A more detailed set of instructions of the opera tion o...

Page 25: ...s tapes 3 et 4 5 Faire tourner le bouton du robinet gaz vers la gauche jusqu la position ON 6 Apr s avoir remis en place le panneau d acc s r gler le thermostat sur la valeur voulue et mettre l interr...

Page 26: ...to close at too low of a flow can damage the appliance Adjust the switch to turn the heater off not on ATTENTION Le manocontact de pression d eau doit tre r gl de fa on ce que l appareil cesse de fonc...

Page 27: ...With the plug removed install the special thread adapter and Pete s Plug fitting and insert a pocket thermometer A temperature rise measurement kit is available through your Jandy distributor See Sect...

Page 28: ...of the water Be sure to keep your chemical levels within the values indicated in Table 7 Zodiac Pool Systems Inc does not warrant heat exchangers damaged by corrosive chemical levels or excess dissol...

Page 29: ...especially at spring start up are impor tant to keep your heater running safely and efficiently through the years Improper maintenance can result in conditions where nausea or asphyxiation from carbon...

Page 30: ...ez pas cet appareil s il a t plong dans l eau m me partiellement Faites inspecter l appareil par un technicien qualifi et remplacez toute partie du syst me de contr le et toute com mande qui ont t plo...

Page 31: ...che tenez votre t te et votre visage loin du br leur pour viter tout risque de blessure NOTE Keep this manual in a safe place for future reference by you and your professional technician when inspecti...

Page 32: ...old gas pressure C Heater size inadequate D Low temperature rise A Gas meter too small Gas line from meter to heater too small B Gas pressure on heater manifold should be adjusted to 4 0 W C natural g...

Page 33: ...ts in the pool system including pump filters and strainers water valves gas supply and time clocks have an effect on heater operation Confirm that the Legacy heater control switch is set to ON and tha...

Page 34: ...l temperature in the vent system It is mounted to the flue collector assem bly Excessive temperatures will cause the switch to open Excessive temperatures can be caused by inadequate water flow or a d...

Page 35: ...n rateur de veilleuse Pilot Veilleuse Piezo Sparker tinceleur pi zo lectrique Fusible Link Maillon Fusible Fireman Switch Connection Montage contacteur pompier 150 High Limit Switch Contacteur de fin...

Page 36: ...point 1 Touch the black lead of the meter to the terminal of the fusible link where the white wire from the gas valve is connected test point 3 If no voltage is detected at test point 3 the wire betw...

Page 37: ...e meter to the other terminal of the 130 F 55 C limit switch test point 10 Low or no voltage here means that the limit is open and must be replaced If voltage is detected at test point 10 move the bla...

Page 38: ...he inlet of the filter system Find the temperature in the chart that is closest to your temperature reading of the pool water Compare your ohmmeter reading to the resistance number in the chart Rememb...

Page 39: ...gh Limit Switch Assembly All R0457401 39 High Limit Set 130 F 150 F All R0457200 40 High Limit Switch 130 F All R0457300 41 High Limit Switch 150 F All R0023000 Key No Description Model No Order Part...

Page 40: ...483401 05 98 Heat Deflector Guard Rear 125 400 R0483501 05 99 Controller Mounting Panel 125 400 R0483901 05 100 Weather Stripping All R0491000 101 Grommet 7 8 All R0492800 Optional Components 102 Nonc...

Page 41: ...tion and Operation Manual Jandy Legacy Model LRZM Pool Spa Heater by Zodiac 11 3 General Exploded View 49 50 51 46 47 45 48 88 94 93 92 56 35 97 83 90 91 101 89 98 96 16 83 11 99 84 85 86 55 58 42 43...

Page 42: ...dy Legacy Model LRZM Pool Spa Heater by Zodiac Installation and Operation Manual 11 4 Detailed Exploded View 59 63 41 40 62 61 25 33 60 27 79 80 77 59 18 17 13 15 44 9 22 28 31 29 23 24 38 8 3 4 6 1 2...

Page 43: ...Page 43 ENGLISH Installation and Operation Manual Jandy Legacy Model LRZM Pool Spa Heater by Zodiac 73 74 70 71 76 38 41 40 25 69 68 76 77 79 80 77 67 72 35 75 67 66 65 64 82 55...

Page 44: ...al S A S U used under license All trademarks referenced herein are the property of their respective owners 2012 Zodiac Pool Systems Inc H0299600 Rev G 1202 Zodiac Pool Systems Inc 2620 Commerce Way Vi...

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