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Laars pool/spa heater - page 1
FOR YOUR SAFETY - This product must be installed and serviced by authorized person- nel, qualified in pool/spa heater installation. Improper installation and/or operation can create carbon monoxide gas and flue gases which can cause serious injury, property damage, or death. Improper installation and/or operation will void the warranty. H0214000B I ...
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Laars pool/spa heater - page 2
SECTION 1 General Information 1A Introduction ............................................................ 1 1B Description ............................................................. 1 1C Warranty ................................................................ 1 SECTION 2 Installation Instructions 2A General Requirements ....................... ...
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Laars pool/spa heater - page 3
LX and LT Pool Heaters Page 1 SECTION 1. General Information 1A. Introduction This manual contains information for the proper installation and operation of the LX and LT pool/spa heaters. Certain sections are specific to United States or Canadian installations, and are labeled United States or Canada. Procedures in this manual must be followed exac ...
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Laars pool/spa heater - page 4
Page 2 NOTE : See Outdoor Installation section regarding roof overhang. These clearances are the minimum acceptable. Whenever possible, larger clearances should be provided to assure adequate room for service operations. Note that gas piping may be provided through either side of the unit. See later section on gas piping. Do not install the heater ...
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Laars pool/spa heater - page 5
LX and LT Pool Heaters Page 3 2D. Outdoor Installation The LX and LT heaters can be installed in the outdoor configuration as received from the factory. 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, windows, louvers, grills, etc., which connect in any w ...
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Laars pool/spa heater - page 6
Page 4 inch of flow area for each 4000 BTU/H of heater input. If air is provided through horizontal ducts, each opening and duct must provide one square inch of flow area for each 2000 BTU/H of heater input. These requirements are summarized in Table 2. Note that the specified areas are net free area, after allowing for the blockage of grill bars, ...
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Laars pool/spa heater - page 7
LX and LT Pool Heaters Page 5 1. The gas supply must be able to provide gas at pressures specified in T able 5. 2. Gas piping installation must be in accordance with the latest edition of ANSI Z223.1. In Canada, the installation must be in accordance with CAN- B149.1 or .2 and all local codes that apply . 3. Check the rating plate to make sure the ...
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Laars pool/spa heater - page 8
Page 6 b. High altitude (H) - 2,000 to 4,500 feet (610 to 1370 m) FOR PROPANE GAS a. Factory Released - 0 to 4,500 feet (610 to 1370 m) 5. Use only wrought steel piping or when permitted by local codes, other rigid piping material. Do not use flexible gas connectors, which restrict gas flow to the heater . 6. T able 4 specifies sizing for gas suppl ...
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Laars pool/spa heater - page 9
LX and LT Pool Heaters Page 7 Figure 8. LLD Connection/Schematic Wiring Diagram. CAUTION: Do not connect the power of the heater to the "load" or output side of a filter pump relay or time clock. The fan on this heater must have power to run after the filter pump has been shut off. TEMP SENSOR J4-1 J4-2 ` +($7 (5 32: (5 62 85&( ` ` ` ...
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Laars pool/spa heater - page 10
Page 8 12. Before operating the heater, test the complete gas supply system and all connections for leaks using a soap solution. Do not use an open flame. CAUTION Some leak test solutions (including soap and water) may cause corrosion or stress cracking. Rinse the piping with water after testing. 2G-2. Special Precautions for Propane Gas Liquefied ...
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Laars pool/spa heater - page 11
LX and LT Pool Heaters Page 9 2. Remove the factory installed jumper wire and tag from the terminal strip (see Figure 10). 3. Connect the low voltage wires from the time clock auxiliary switch to the two terminals. Use American W ire Gage (A WG) No. 14 gauge stranded copper wire with a temperature rating of 221°F (105°C) or greater (see Figure 11 ...
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Laars pool/spa heater - page 12
Page 10 3. Remove the two screws holding the bezel in place. Turn the bezel over to view the circuit board on the back. 4. Locate the programmed chip on the Power Center Board (the larger square chip in the lower right corner of the circuit board). In the center of the chip is the revision letter. If the revision letter is "H" or higher g ...
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Laars pool/spa heater - page 13
LX and LT Pool Heaters Page 11 2. Remove the two hex head screws that hold the raceway cover in place. They are located on the bottom flange of the raceway cover . Slide the raceway cover down to expose the raceway . 3. Remove the control panel assembly from the top panel. Lift the control panel cover . Remove the two philips head screws located at ...
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Laars pool/spa heater - page 14
Page 12 d. Y ellow Blower wire to terminal 8 e. White Blower wire to terminal 7 31. Reconnect the two white wires to the vent switch now located just above the return header . 32. Reconnect the blower pressure switch tubing to the blower housing. 33. Replace the EMI shield (metal plate) located over the blower by reinstalling the two hex head screw ...
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Laars pool/spa heater - page 15
LX and LT Pool Heaters Page 13 Note: Only the small tab of the top groove will fit behind the upper panel. 40. Remove the button plug type washer from the left side cover panel. This panel will not be used in reassembling the heater after a heat exchanger reversal. However, the button plug washer will be needed. Do not replace the cover panel over ...
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Laars pool/spa heater - page 16
Page 14 2I-3. Connections at Heater The LX and LT have a standard two inch water header and coupling design. With this feature, only nominal two inch PVC or CPVC may be connected to the heater. However, by installing the appropriate pipe adapters and two short pieces of two inch plastic pipe (supplied by the installer), any size existing pipe may b ...
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Laars pool/spa heater - page 17
LX and LT Pool Heaters Page 15 Table 6. Chemical Concentration Levels Test Recommended Level* Free Chlorine or 1.0 to 3.0 ppm Total Bromine 2.0 to 4 .0 ppm pH 7.2 to 7.6 Total Alkalinity (TA) 100 to 150 ppm Calcium Hardness (CH) 200 to 400 ppm Langelier Saturation Index (SI) -0.5 to +0.5 Cyanuric Acid 30 to 150 ppm Total Dissolved Solids (TDS) Less ...
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Laars pool/spa heater - page 18
Page 16 side of the valve. The pressure will be zero when the heater is not running. When the heater is operating the manifold gas pressure should be 4.0" wc for natural gas and 9.0" wc for LP within .2" wc. To adjust the manifold gas pressure, first remove the slotted cap next to the inlet pressure port on the inlet side of the gas ...
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Laars pool/spa heater - page 19
LX and LT Pool Heaters Page 17 To adjust the pressure switch, proceed as follows (see Figure 19). The pool filter must be clean before making this adjustment. The heater does not have to be firing. 1. Set the heater control to the "OFF" position. 2. Start the filter pump and confirm by means of an voltmeter that the pressure switch closes ...
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Laars pool/spa heater - page 20
Page 18 SECTION 3. Operating Instructions Lighting and shutdown instructions are posted inside the heater. Do not attempt repairs on the gas control or appliance. Tampering is dangerous and voids all warranties. LP GAS: To avoid possible injury, fire and explosion, read and follow these precautions and all instructions on this appliance before star ...
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Laars pool/spa heater - page 21
LX and LT Pool Heaters Page 19 CAUTION Figure 21. Temperature Control Panel LAARS LAARS POOL/OFF/SP A BACKLIGHT RS SERVICE ON LINE FOR OPERA TION WITH CONTROLLER AquaLink RS TM LAARS POOL OFF SP A Heating SERVICE * *SERVICE DIAGNOSTICS-SEE INSIDE FRONT DOOR F°/C° SELECT THERMOST A T SETTINGS Low Pressure Hi Lim Sw Ext Sw 1 Air Flo Sw AGS Ext Sw 2 ...
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Laars pool/spa heater - page 22
Page 20 Below the Backlight indicator is an RS service indicator, which displays RS Online when the heater is connected to an RS unit. Directly below the RS Service indicator on the bottom right hand portion of the LCD screen is the Fahrenheit/Celsius temperature unit indicator. The Model LT does not offer these features. 3B-2. Turning the He ...
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Laars pool/spa heater - page 23
LX and LT Pool Heaters Page 21 LX/LT H EATE R S ERVICE D IA GNOSTIC G UIDE D IS PLAY C ODE C AUSE R EM EDY PRESS SW * (pressure sw itch) 1. Pump is not ru nnin g. 1. This is a norm al display w hen t he pump is OFF . No Serv ice Re quired. 2. Low pump pressu re. 2. Clea n f ilter or c lear blocka ge/ch eck position o f val ves in plumbing sy stem. ...
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Laars pool/spa heater - page 24
Page 22 then the ignitor will glow and the gas valve will energize. The water temperature and flue temperature will increase as gas combustion takes place. The heater will attempt to ignite three times in succession. If, after three attempts for ignition, the heater does not sense the presence of flame, the heater goes into a lockout mode and ...
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Laars pool/spa heater - page 25
LX and LT Pool Heaters Page 23 FOR YOUR SAFETY READ BEFORE OPERA TING W ARNING: If you do not follow these instructions exactly , a fire or explosion may result, causing property damage, personal injury or loss of life. OPERA TING INSTRUCTIONS 9. Replace control access panel 10. T urn on all electric power to appliance. 1 1.* Set thermostat to desi ...
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Laars pool/spa heater - page 26
Page 24 4 . Before entering the spa or hot tub, users should check the water temperature with an accurate thermometer; spa or hot tub thermostats may err in regulating water temperatures by as much as 4F° (2C°). 5. Persons with medical history of heart disease, circulatory problems, diabetes or blood pressure problems should obtain their physicia ...
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Laars pool/spa heater - page 27
LX and LT Pool Heaters Page 25 5 . Disconnect the copper tubing from the pressure switch fitting (see Figure 24). 6. Cover the vent grille so that snow will not accumulate in the combustion blower , where it may freeze. To reactivate the heater in the spring, have a qualified professional technician reassemble the heater as follows: 1. Attach the p ...
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Laars pool/spa heater - page 28
Page 26 3 . Do not use the heater if any part has been under water . Immediately call a qualified professional technician to inspect the heater and replace any part of the control system and any gas control which has been under water . 4 . Check for spider webs and other debris in the heater and vent outlet especially at spring start up. 3H-2. ...
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Laars pool/spa heater - page 29
LX and LT Pool Heaters Page 27 SECTION 5. Parts List 5A . General Information To order or purchase parts for the Waterpik Technologies LX or LT pool/spa heater, contact your nearest Waterpik Technologies dealer or distributor. If they cannot supply you with what you need, contact the Customer Service Manager at Waterpik Technologies. 5B. Part Numbe ...
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Laars pool/spa heater - page 30
Page 28 1 (SEE NEXT PAGE FOR DETAIL) 6 (SEE NEXT PAGE FOR DETAIL) 20 21 22 23 25 (SEE NEXT PAGE FOR DETAIL) 44 54 55 57 (SEE NEXT PAGE FOR DETAIL) 58 59 60 60 61 63 64 65 66 67 68 69 70 71 72 73 10 9 (SEE NEXT PAGE FOR DETAIL) 45 24 62 74 56 36 38 37 5C. Exploded View 5C-1 Overview 77 ...
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Laars pool/spa heater - page 31
LX and LT Pool Heaters Page 29 2 3 4 5 7 8 11 11 12 16 17 15 18 19 14 35 27 29 37 42 40 41 52 53 51 32 31 30 34 33 43 43 6 5C-2 Detail View 77 ...
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Laars pool/spa heater - page 32
LIMITED W ARRANTY Thank you for purchasing Jandy ® pool and spa products. W ater Pik T echnologies (manufacturer of Jandy products, including Laars ® pool and spa heaters) warrants all parts to be free from manufacturing defects in materia ls and wo rkmansh ip for a p eriod of one year from the d ate of re tail pur chase, w ith the f ollowin g ex ...
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