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FOR YOUR SAFETY - This product must be installed and serviced by a profes-
sional service technician, qualified in pool heater installation. Improper installa-
tion and/or operation could create carbon monoxide gas in flue gases which
could cause serious injury, property damage, or death. Improper installation
and/or operation will void the warranty.

H0235900-

Installation and Operation Data

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 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 nearby 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.

Installation and
Operation Manual

Laars Lite 2

Pool and Spa Heater

Models LG and LD
Natural Gas or LP Gas

NOTE: LD LP Gas For
Outdoor Use Only

Summary of Contents for Lite 2 LG, Lite 2 LD

Page 1: ...y damage personal injury or death 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...

Page 2: ...9 2G 2 Reversible Water Connections 10 2G 3 Valve Installation 12 2G 4 Chlorinators Ozone Generators and Sanitizing Chemicals 12 2G4a Water Chemistry 13 2G 5 Pressure Relief Valve 13 2G 6 Adjusting t...

Page 3: ...g with the latest edition of the Standard for Notes 1 In Canada derate BTU Hr input and output 10 percent for altitudes of 2 000 to 4 500 feet 609 to 1372 m above sea level No derating necessary up to...

Page 4: ...he proper perfor mance and application of Waterpik Laars products For technical support call 415 382 8220 extension 260 SECTION 2 Installation Instructions 2A General Information Install the Laars Lit...

Page 5: ...ate 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 around the heater Locate the heater so the clearances from c...

Page 6: ...r at least 3 Figure 4 Non Combustible Platform Notes 1 Blocks must provide solid base and be braced so they cannot slip out of place 2 Air openings in blocks must be arranged to provide unrestricted o...

Page 7: ...2 Check the rating plate to make sure the heater is fitted for the type of gas being used Waterpik Laars heaters as shipped from the factory are certified to operate at an altitude of 0 to 3000 feet 0...

Page 8: ...ttention Au moment de l entretien des commandes tiquetez tous les fils avant de les d brancher Des erreurs de c blage peuvent entra ner un fonctionnement inad quat et dangereux 2F 1 General Informatio...

Page 9: ...m b Schematic Diagram W IRING SHOW N AS SHALL USE APPLIANCE W IRING MATERIAL RATED AT 200 C O HSI IGNITION WIRE FACTORY WIRED 120 V 240 V FIELD WIRED 120V 240V FACTORY WIRED 24 V IF O RIG INAL W IRE S...

Page 10: ...heater from the high voltage side of the time clock Doing so may cause damage to the heater or surrounding plumbing MILLIVOLT HEATER WIRING DIAGRAM Y Connection Diagram BK TH PP Y Y W PP TH Pilot Gen...

Page 11: ...connected by removing the jumper wire on the terminal block located in the control compartment see Figure 6 and connecting the two wires from the remote to the two terminals on the terminal block This...

Page 12: ...side It could be necessary or helpful to switch the connections to the left side to improve access for installation and service Perform this modification before installing the heater using the follow...

Page 13: ...nscrew the brass compression fitting securing the pressure switch to the inlet outlet header Remove tube from header and gently bend it out of the way 11 Loosen the screw securing the temperature sens...

Page 14: ...ater damage caused by exces sive chemicals or improper ozonization is not covered by the Waterpik Laars warranty Be sure to adhere to thefollowing When ozone is injected upstream of the heater install...

Page 15: ...The back pressure could be too low to trigger the pressure switch If this happens it may be necessary to install a directional fitting or elbows where the return line enters the pool This will increas...

Page 16: ...ains off This allows water from the pool to reach the heater 7 Record the temperature indicated by the ther mometer cold water 8 Turn the heater ON following the lighting in structions found on the in...

Page 17: ...ve thermometer and Pete s plug d Replace the drain plug 2G 9 Adjusting the Manual Bypass Valve After the manual bypass valve is installed use the following procedures to adjust the bypass valve 1 Clea...

Page 18: ...ts off the top of the heater Blocking air flow could damage the heater and may void the warranty WARNING Vent pipes drafthoods and heater tops get hot These surfaces can cause serious burns Do not tou...

Page 19: ...to the appliance if service is to be performed 3 Turn gas control knob clockwise to OFF 4 Replace control access panel A This appliance does not have a pilot light It is equipped with an ignition dev...

Page 20: ...he knob will not push in or turn by hand don t try to repair it Call a qualified service techni cian Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part...

Page 21: ...only going to be used occasionally turn the temperature control down to the MIN setting This prevents the pool from water from becoming chilled and minimizes the time re quired to raise the pool wate...

Page 22: ...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 h...

Page 23: ...ose or broken wires and terminal connections 2 Verify pressure switch operation by cycling the spa pump on and off a few times The heater should go off immediately after the pump stops 3 Inspect the e...

Page 24: ...own All 10480000 VENT SYSTEM 59 Top Enclosure 125 400 R0343401 05 60 Top Filler Plate US Only 125 400 R0343701 05 61 Rainshield Kit US Only 125 400 R0318301 05 61 Rainshield Kit Canada Only 125 400 R0...

Page 25: ...URNERTRAY LDSHOWN SEE NEXT PAGE FORDETAIL 50 51 52 53 54 66 60 59 61 62 65 UNITED STATES CANADA UNITED STATES CANADA UNITED STATES 82 82 85 85 101 102 103 104 105 106 107 108 HEATEXCHANGER SEE NEXT PA...

Page 26: ...6 14 8 5 2 1 4 34 16 18 70 98 96 97 75 72 75 74 38 32 95 86 85 49 48 69 47 44 45 80 77 79 78 81 90 93 88 94 91 39 30 31 43 76 87 23 22 36 28 34 26 33 25 LD SHOWN 29 27 35 3 12 LG SHOWN 19 24 13 20 LG...

Page 27: ...Model LG LD Pool and Spa Heater Page 25 NOTES...

Page 28: ...g to the Waterpik Laars factory The liability of Waterpik Laars shall not exceed the repair or replacement of defective parts by factory authorized technicians and shall not include transportation to...

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