Zodiac Legacy LRZ Installation And Operation Manual Download Page 32

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Legacy™ Model LRZM Pool/Spa Heater

Installation and Operation Manual

Figure 25. Test Point Identification Diagram

6 7

12 13

4 5

TEMPERATURE

CONTROL

ROLL-OUT SWITCH

(FUSIBLE LINK)

FIREMAN

SWITCH

PRESSURE

SWITCH

HIGH

LIMIT

GAS VALVE

PILOT

GENERATOR

PILOT

IGNITER

BK - BLACK

R - RED

W - WHITE

H0321000 Rev E

TP/TH

52°C

(126°F)

42°C

(108°F)

HIGH

LIMIT

EARTH

BONDING

LUG

240°C (464°F)

VENT

TEMPERATURE

LIMIT

Summary of Contents for Legacy LRZ

Page 1: ...wed exactly a fire or explosion may result causing property damage personal injury or death H0316500 Rev F WARNING The GAS SAFETY INSTALLATION AND USE REGULATIONS 1998 as amended place statutory requi...

Page 2: ......

Page 3: ...3 3 Inspection and Replacement of Existing Vent System with New Components 13 Section 4 Gas Connections 13 4 1 Gas Supply and Piping 13 4 2 Burner Pressure 14 4 3 Special Precautions for LPG 14 Secti...

Page 4: ...11 4 1 Gas Valve 31 11 4 2 Pilot Generator 33 11 4 3 Fusible Link 33 11 4 4 Fireman Switch and External Interlocks 33 11 4 5 Limit Switches 34 11 4 6 Water Pressure Switch 34 11 4 7 Temperature Contro...

Page 5: ...symbol Be sure to read and comply with all of the warnings and cautions 1 2 1 Spa Hot Tub Safety Rules WARNING Elevated water temperature can be hazardous Consult heater operation and installation ins...

Page 6: ...warranty does NOT cover damage caused by improper assembly installation operation or field modification Also damage to the heat exchanger by corrosive water is NOT covered by the warranty See Section...

Page 7: ...areas Install the Legacy Model LRZ millivolt heater vent caps and draft hoods in accordance with the procedures in this manual local codes and ordinances and in accordance with the latest edition of t...

Page 8: ...riate ventilation directly to the outside WARNING The Legacy heater is certified to European require ments for use only as a swimming pool or spa heater The Legacy heater must not be used for any othe...

Page 9: ...onsible for such water loss or flooding or result ing damage The Legacy Model LRZ millivolt heater may be installed indoors or outdoors as outlined in later sections Location of the heater below or ab...

Page 10: ...f the alcove must be covered by a noncombustible panel 2 5 4 Outdoor Installation The Legacy Model LRZ millivolt heater can be installed in the low profile Type A flueless configu ration as received f...

Page 11: ...n excess of 60 kW total rated input 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 natural draf...

Page 12: ...either case the result can be release of combustion products to the indoors This can cause serious injury or death by carbon monoxide poison ing or asphyxiation All indoor installations and outdoor sh...

Page 13: ...t least five 5 feet in vertical height above the draft hood outlet Double wall or equivalent vent pipe is recom mended IMPORTANT NOTE Do not use sheet metal screws at the snap lock joints of gas vents...

Page 14: ...about specific installation restrictions in your area Section 5 Water Connections 5 1 Water Piping Figure 6 illustrates typical piping for pool equip ment in pool spa combination pools For normal inst...

Page 15: ...ions have been written to include the steps needed when reversing the water connections on an existing installation If you are reversing the headers on a new installation some steps will be ignored Wh...

Page 16: ...remove the coupling nuts from the header and disconnect the water supply from the heater 9 Remove the 10 bolts and washers from the inlet outlet header and remove the header from the tube assembly 10...

Page 17: ...G COUPLING NUT PVC OR CPVC PIPE 21 Use plastic wire ties to refasten the temperature sensor high limit switch and water pressure switch wires to each other Bundle the wires near the control panel and...

Page 18: ...by reaming it with a 9 5 mm 3 8 inch drill bit 4 Open the hole again by reaming it with a 12 7 mm 1 2 inch drill bit CAUTION Initially drilling a 12 7 mm 1 2 inch hole without reaming may cause the bi...

Page 19: ...cal require ments 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 mainten...

Page 20: ...any residual heat contained in the heat exchanger back to the pool To install a time clock auxiliary switch into the heater wires see Figure 16 1 Remove heater door 2 Remove the factory installed wir...

Page 21: ...to manual ON OFF operations of any controls fitted in the gas control circuit 12 Check the operation of the flame failure safety device using the following steps a Extinguish the main burner and pilot...

Page 22: ...d shutdown instructions can also be found attached to the wall inside the control compartment door See Figure 18 1 Remove the service door on the front of the heater the temperature control setting an...

Page 23: ...intained between 7 4 and 7 6 when operating unit see section entitled Water Chemistry in operating manual 3 BACKWAshing Turn heater off 20 minutes before backwashing or shutting down filter to prevent...

Page 24: ...rn the gas control knob clockwise until it stops at the OFF position see Figure 19 3 Wait five 5 minutes before lighting the pilot 4 Turn the knob on the gas valve counterclockwise to PILOT then push...

Page 25: ...aking place possibly due to a low pH value combined with other chemistry problems The condi tion can be corrected by changing the spa water and closely monitoring the pH factor and chemical proper tie...

Page 26: ...njury or death 9 3 1 Owner Inspection Zodiac recommends that you inspect the heater on a continual basis and especially after abnormal weather conditions The following basic guidelines are suggested f...

Page 27: ...temperature limit 8 Perform a temperature rise test in accordance with Section 11 6 9 If the heater is equipped with a pressure relief valve check for corrosion in and around the valve With the filter...

Page 28: ...ubleshooting Table 8 lists some of the more common problems causes and solutions encountered when running the heater Most problems occur when the heater is being started for the first time after insta...

Page 29: ...gas supply B Low burner 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 burner should be adjusted to...

Page 30: ...ws into the burner a negative pressure is created at the opening of the burner This negative pressure pulls air into the burner with the gas and mixes the two together As the gas air mixture flow thro...

Page 31: ...lot generator and control circuits and where to take measurements Location numbers and letters in circles have been added and will be referenced in the follow ing sections As stated at the beginning o...

Page 32: ...16 11 12 13 14 1 4 5 2 3 17 TEMPERATURE CONTROL ROLL OUT SWITCH FUSIBLE LINK FIREMAN SWITCH PRESSURE SWITCH HIGH LIMIT GAS VALVE TH TP PILOT GENERATOR PILOT IGNITER BK W W R BK BLACK R RED W WHITE H0...

Page 33: ...st point 4 the roll out switch fusible link has failed This indicates higher than normal temperatures in the component compartment vestibule Normal component compart ment temperature is well below 148...

Page 34: ...o voltage here means that the limit switch is open and must be replaced If voltage is detected at test point 12 move the black lead of the meter to the terminal of the water pressure switch where the...

Page 35: ...clean before making any pressure switch adjustment A dirty filter will restrict the water flow and the pressure switch cannot be adjusted properly To adjust the pressure switch refer to Figure 26 and...

Page 36: ...the header see Figure 22 Loosen the nut so that the screw can be adjusted A slight water leak past the nut may be expected Turn the screw counterclockwise to decrease the tempera ture rise and clockwi...

Page 37: ...hield Partition 125 400 R0478201 05 41 Flue Collector Assembly 125 400 R0470501 05 42 Outdoor Vent Cap 125 175 R0491606 42 Outdoor Vent Cap 250 400 R0491603 05 43 Indoor Draft Hood 125 175 R0499606 43...

Page 38: ...Legacy Model LRZM Pool Spa Heater Installation and Operation Manual 12 3 General Exploded View 28 61 48 66 72 71 70 49 77 64 65 76 74 10 34 35 61 51 70 75 79 27 46 47 5 42 43 44 39 40 38 41 62 63 68 6...

Page 39: ...NGLISH Installation and Operation Manual Legacy Model LRZM Pool Spa Heater 12 4 Detailed Exploded View 37 29 48 52 60 52 55 54 32 31 33 53 57 59 7 57 52 14 14 12 13 9 8 11 21 23 25 21 36 5 19 15 18 24...

Page 40: ...81 1 800 822 7933 www ZodiacPoolSystems com 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 ow...

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