Laars Lite 2 LG, Lite 2 LD Installation And Operation Manual
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Laars Lite 2 LG, Lite 2 LD Installation And Operation Manual

Natural gas or lp gas pool and spa heater
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Installation and Operation Data
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.
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
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.
• 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.
™
WHAT TO DO IF YOU SMELL GAS

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Summary of Contents for Laars Lite 2 LG, Lite 2 LD

  • Page 1 Installation and Operation Data 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.

  • Page 2: Table Of Contents

    SECTION 1. General Information Introduction ... 1 Description ... 2 Warranty ... 2 Technical Assistance ... 2 SECTION 2. Installation Instructions General Information ... 2 Field Assembly ... 2 Site Location ... 3 2C-1. Installation Information ... 3 2C-2. Outdoor Installation ... 4 2C-3.

  • Page 3: General Information

    Model LG & LD Pool and Spa Heater SECTION 1. General Information 1A. Introduction This manual provides installation and operation instructions for the Laars Lite 2, Model LG and LD pool and spa heaters. Read these installation and operation instructions completely before proceeding (920 cm) Model Heater...

  • Page 4: Description

    Page 2 Gas-Fired Pool Heaters, ANSI Z21.56, and in Canada with CAN1-4.7-M85. Certain sections of this manual are specific to either United States or Canadian installations, and are labeled as such. 1B. Description The Laars Lite 2 LD heater gets electrical power from an external 120VAC or 240VAC source and provides a dual thermostat Flex-Temp control system for pool/spa combinations or preheat convenience.

  • Page 5: Site Location

    Model LG & LD Pool and Spa Heater Notes: 1. An Underwriters' Laboratories listed vent cap is required to prevent downdraft and allow the heater to function properly and safely. 2. Use approved roof jack. Figure 2. Indoor Installation Venting (USA), or Outdoor Shelter (Canada). Table 1.

  • Page 6: Outdoor Installation

    Page 4 2C-2. Outdoor Installation Laars Lite 2 heaters can be installed in the low- profile, grate top configuration (U.S.A. only) as received from the factory, or with an optional high wind vent cap/stack. Canadian units require a factory approved vent cap. Figure 3.

  • Page 7: Combustion And Ventilation Air Supply

    Model LG & LD Pool and Spa Heater without modification and in accordance with all local, state, provincial and national codes. Proper ventilation of exhaust and combustion air are essential for the safe operation of the heater. 2D. Combustion and Ventilation Air Supply All indoor installations must have openings to outside air for combustion, ventilation, and dilution of...

  • Page 8: Special Precautions For Propane Gas

    Page 6 Table 4. Gas Supply Pressure Requirements Supply Pressure Natural Gas Water Column (mm) Minimum (140) Maximum 10.0 (254) Install a sediment trap (drip leg) ahead of the gas controls (see Figure 5). Fit the trap with a threaded cap which can be removed for cleaning. Install a manual gas shutoff valve for service and safety.
  • Page 9 Model LG & LD Pool and Spa Heater MODEL LD WIRING DIAGRAM O F F P O O L S PA R E M O T E C O N N E C TOR L IM IT W ATE R P R ES SU R E T EM P S W ITC H...

  • Page 10: Connection Diagram

    Page 8 2F-2. Auxiliary Time Clock Wiring If you install a time clock to control the filter pump operation, it is recommended that the time clock have its own low voltage (Fireman’s) switch to turn off the heater before turning off the pump. The switch should shut off the heater about 15 minutes before the filter pump shuts off.

  • Page 11: Remote Operation (Model Ld Only)

    Model LG & LD Pool and Spa Heater Figure 8. Field Wiring Connections (LD). Figure 9. Time Clock Wiring. To install a time clock auxiliary switch into the heater wires (see Figure 9): Remove heater door. Remove the factory installed wire between terminals 1 and 2 on the terminal strip (see Figure Connect the wires from the time clock auxiliary switch to the two terminals.

  • Page 12: Reversible Water Connections

    Page 10 Figure 10. Piping installation. Figure 11. Plastic piping connections. WATERPIK TECHNOLOGIES INC. 2G-2. Reversible Water Connections Waterpik Laars ships the Laars Lite 2 heater with the water connections on the right side. The Laars Lite 2 heater can be installed with the water connections on either side.
  • Page 13 Model LG & LD Pool and Spa Heater Remove heater door. If there is a vent cap or drafthood (indoor) on top of the heater, remove it. Remove all 8 hex-head screws fastening the top and lift the top assembly straight up (see Figure 12).

  • Page 14: Valve Installation

    Page 12 Heat Exchanger End Baffles Combustion Chamber Wall Figure 16. Heat exchanger and end baffles. 13. Lift the heat exchanger assembly out of the heater. Reinstall heat exchanger 180 degrees (inlet/outlet header left) from it's original posi- tion. 14. After replacing the heat exchanger into the heater, the end baffles must be replaced.

  • Page 15: Water Chemistry

    Model LG & LD Pool and Spa Heater • When chemical feeders are used, plumb the feeder downstream of the heater and install an in- line check valve between the heater and the feeder (a minimum of 18" is required between the heater and the check valve).

  • Page 16: Automatic Flow Control Valve

    Page 14 a) Model LD Temperature Control b) Model LG Temperature Control Figure 18. Temperature controls. Figure 19. Pressure switch adjustment. NOTE: Heater should not be allowed to fire on low speed. Turn rotary switch (LD) or rocker switch (LG) to ON.

  • Page 17: Adjusting The Manual Bypass Valve

    Model LG & LD Pool and Spa Heater Note: When using metal pipe as heat sink, join metal and PVC/CPVC, using metal male and PVC/CPVC female connection. Figure 20. Typical installation. 11. If the temperature rise is below the minimum range indicated, two possibilities arise: a.

  • Page 18: Operating Instructions

    Page 16 Once the temperature is within the correct range, safety wire the handle of the manual bypass valve in place and tag the valve to prevent change in the water flow. SECTION 3. Operating Instructions 3A. General Information With any new pool or spa installation, operate the filter pump with the heater off long enough to com- pletely clean the water.

  • Page 19: For Your Safety Read Before Operating

    Model LG & LD Pool and Spa Heater 3B-1. Model LD (Direct Ignition) FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury or loss of life. A.
  • Page 20 Page 18 3B-2. Model LG (Standing Pilot) FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. This appliance has a pilot which must be lighted by a push button sparker.

  • Page 21: Seasonal Care

    Model LG & LD Pool and Spa Heater 3D. Seasonal Care Caution Do not operate this heater outdoors at temperatures below 20 degrees Fahrenheit (°F) (-7 degrees Celsius [°C]). 3D-1. Spring and Fall Operation During periods when the pool is only going to be used occasionally, turn the temperature control down to the MIN setting.

  • Page 22: Water Chemistry

    Page 20 3E. Water Chemistry For notes on water chemistry please consult sections 2G-4, 2G-4a and Table 7 on page 13 of this manual. 3F. Spa/Hot Tub Safety Rules WARNING The following “Safety Rules for Hot Tubs,” recommended by the U.S. Consumer Product Safety Commission, should be observed when using the spa.

  • Page 23: Periodic Inspection

    Model LG & LD Pool and Spa Heater 3H. Periodic Inspection WARNING Improper installation or maintenance can cause nausea or asphyxiation from carbon monoxide in flue gases which could result in severe injury, or death. 3H-1. Owner Inspection Waterpik Laars designs and constructs the Laars Lite 2 heater to provide long performance life when installed and operated properly under normal condi- tions.
  • Page 24 Page 22 Description PILOT/IGNITER SYSTEM Pilot, Main Burner Assembly, NAT Pilot, Main Burner Assemby, LPG Pilot Burner, NAT Pilot Burner, LPG Pilot Electrode Pilot Generator Ceramic Insulator Assembly Burner, Main w/Pilot Bracket High Voltage Lead Assembly Pilot Tubing Piezo Lighter Assembly Pilot Condensate Shield - LG Ignitor - LD MAIN GAS ASSEMBLY...
  • Page 25 Model LG & LD Pool and Spa Heater UNITED STATES TEMPERATURE CONTR0L SEE NEXT PAGE FOR DETAIL BURNER TRAY (LD SHOWN) SEE NEXT PAGE FOR DETAIL UNITED STATES UNITED STATES Page 23 CANADA CANADA HEAT EXCHANGER SEE NEXT PAGE FOR DETAIL...
  • Page 26 Page 24 44 45 SHOWN) SHOWN) 78,81 WATERPIK TECHNOLOGIES INC. SHOWN)
  • Page 27 Model LG & LD Pool and Spa Heater Page 25 NOTES...

  • Page 28: Limited Warranty

    Page 26 Your Laars Lite 2 pool/spa heater is backed by this double warranty 1. Controls, copper heat exchanger tubes, and combustion chamber panels are warranted against defects in materials and workmanship for two (2) years from date of purchase. 2.

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