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Laarsen Associates LG, LD - page 1
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 warrant ...
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Laarsen Associates LG, LD - page 2
T ABLE OF CONTENTS SECTION 1. General Information 1A. Introduction ................................................... 1 1B. Description ................................................... 2 1C. Warranty ....................................................... 2 1D. Technical Assistance .................................... 2 SECTION 2. Installation ...
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Laarsen Associates LG, LD - page 3
Model LG & LD Pool and Spa Heater Page 1 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 Figure 1. General Configuration. with the installation. ...
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Laarsen Associates LG, LD - page 4
Page 2 WATERPIK TECHNOLOGIES INC. 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 ...
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Laarsen Associates LG, LD - page 5
Model LG & LD Pool and Spa Heater Page 3 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. When a drafthood is used, it must be connected to a vent pipe which stops at least 2 feet (0.61 meters [m]) above the highest poin ...
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Laarsen Associates LG, LD - page 6
Page 4 WATERPIK TECHNOLOGIES INC. Locate the heater in an open, unroofed area . Do not install the heater under a deck. Do not locate the heater below or adjacent to any doors, glass openings, louvers, grills, etc., which connect in any way with an inhabited area of a building, even though the access might be through another structure (e.g., a gara ...
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Laarsen Associates LG, LD - page 7
Model LG & LD Pool and Spa Heater Page 5 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 combus ...
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Laarsen Associates LG, LD - page 8
Page 6 WATERPIK TECHNOLOGIES INC. 7. Disconnect the heater and its individual shutoff valve from the gas supply system during pressure testing of the system at pressures higher than 1/2 pounds per square inch (psi) (3.45 kilopascals [kPa]). If the test pressure is equal to or less than 1/2 psi (3.45 kPa), close the manual shutoff valve on the heate ...
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Laarsen Associates LG, LD - page 9
Model LG & LD Pool and Spa Heater Page 7 IG N /1 2 0 IG N /2 4 0 (LI) (L2 ) IG N TH VA LVE GND REMOTE CONNE CT OR SP A POOL OFF WA T ER TEMP SE NSOR P RES SU R E SWI T C H LI M I T LI M I T FIREM AN SW I T C H CONNE CT I ON FUSI BL E LI N K EL EC. FUS E MV1 MV 2 HONEYW ELL GA S V A L VE BR I GNI TI O N CONTROL (F EN W A L ) 05 33 BK Y/ BK BK R ...
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Laarsen Associates LG, LD - page 10
Page 8 WATERPIK TECHNOLOGIES INC. Figure 7. LG Connection/Schematic Wiring Diagram 2F-2. Auxiliary Time Clock Wiring (LD) 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 ...
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Laarsen Associates LG, LD - page 11
Model LG & LD Pool and Spa Heater Page 9 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): 1. Remove heater door. 2. Remove the factory installed wire between terminals 1 and 2 on the terminal strip (see Figure 9). 3. Connect the wires from the ti ...
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Laarsen Associates LG, LD - page 12
Page 10 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. It could be necessary, or helpful, to switch the connections to the left side to improve access for insta ...
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Laarsen Associates LG, LD - page 13
Model LG & LD Pool and Spa Heater Page 11 1. Remove heater door. 2. If there is a vent cap or drafthood (indoor) on top of the heater, remove it. 3. Remove all 8 hex-head screws fastening the top and lift the top assembly straight up (see Figure 12). 4. Remove rainshield assembly and set it aside. 5. Remove screws that fasten the gap closures t ...
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Laarsen Associates LG, LD - page 14
Page 12 WATERPIK TECHNOLOGIES INC. 20. Connect the white wire labeled PS to the pressure switch and the other white wire to its original location on the Fireman's switch. 21. Reinstall the drain plugs and tighten securely. Replace jacket/plug grommets. 22. Install the flue collector assembly. Be sure the front and rear panels of the flue colle ...
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Laarsen Associates LG, LD - page 15
Model LG & LD Pool and Spa Heater Page 13 • 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). • Never deposit chemicals directly in the pool skimmer. 2G- 4a. Water Chemistr ...
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Laarsen Associates LG, LD - page 16
Page 14 WATERPIK TECHNOLOGIES INC. 2G-7. Automatic Flow Control Valve The automatic flow control valve maintains the proper flow through the heater at rates up to approxi- mately 125 Gallons Per Minute (GPM) (474 liters per minute [LPM]). If the system filter-flow rate is higher than approximately 125 GPM (474 LPM), install a manual bypass valve (s ...
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Laarsen Associates LG, LD - page 17
Model LG & LD Pool and Spa Heater Page 15 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 . The supply gas volume is too low. b. The system's water ...
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Laarsen Associates LG, LD - page 18
Page 16 WATERPIK TECHNOLOGIES INC. 9. 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 en ...
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Laarsen Associates LG, LD - page 19
Model LG & LD Pool and Spa Heater Page 17 WARNING: If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury or loss of life. • If you cannot reach your gas supplier, call the fire department. C. Use only your hand to push in or turn the gas control knob. Never use tools. If the ...
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Laarsen Associates LG, LD - page 20
Page 18 WATERPIK TECHNOLOGIES INC. 3B-2. Model LG (Standing Pilot) 1. STOP! Read the safety information above. 2. Set the thermostat to lowest setting and turn appliance ON/OFF switch to "OFF". 3. Turn gas control knob clockwise until it stops at "OFF" position. 4. Wait five (5) minutes to clear out any gas. If you then smell ga ...
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Laarsen Associates LG, LD - page 21
Model LG & LD Pool and Spa Heater Page 19 6. Use compressed air to blow out any standing water remaining in the heat exchanger. 7. Grease the threads on the drain plugs and rein- stall plugs, but do not tighten. 8. Disconnect the pressure switch from the siphon loop (copper tubing) (see Figure 22). 3D-3. Spring Start-up To restart the heater in ...
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Laarsen Associates LG, LD - page 22
Page 20 WATERPIK TECHNOLOGIES INC. 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. 1. Spa ...
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Laarsen Associates LG, LD - page 23
Model LG & LD Pool and Spa Heater Page 21 3H. Periodic Inspection 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. The following basic guidelines are suggested for your inspection: 1. Keep the top and surrounding ...
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Laarsen Associates LG, LD - page 24
Page 22 WATERPIK TECHNOLOGIES INC. Key Model ORDER No Description No PART NO PILOT/IGNITER SYSTEM 1 Pilot, Main Burner Assembly, NAT All R0099100 1 Pilot, Main Burner Assemby, LPG All R0099200 2 Pilot Burner, NAT All R0096700 2 Pilot Burner, LPG All R0096600 3 Pilot Electrode All W0040000 4 Pilot Generator All W0036901 5 Ceramic Insulator Assembly ...
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Laarsen Associates LG, LD - page 25
Model LG & LD Pool and Spa Heater Page 23 64 63 67 9 10 11 BURNER TRAY (LD SHOWN) SEE NEXT PAGE FOR DETAIL 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 HEAT EXCHANGER SEE NEXT PAGE FOR DETAIL TEMPERATURE CONTR0L SEE NEXT PAGE FOR DETAIL ...
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Laarsen Associates LG, LD - page 26
Page 24 WATERPIK TECHNOLOGIES INC. 33 17 15 7 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 SHOWN) 40 42 41 69 72 73 74 71 73 84 89 92 68 ...
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Laarsen Associates LG, LD - page 27
Model LG & LD Pool and Spa Heater Page 25 NOTES ...
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Laarsen Associates LG, LD - page 28
Page 26 WATERPIK TECHNOLOGIES INC. LAARS LITE 2 LIMITED W ARRANTY Y our Laars Lite 2 pool/spa heater is backed by this double warranty to assure your complete satisfaction. 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. Al ...
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