Instruction/ maintenance manual of the product pool/spa heater Laars
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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.
SECTION 1 General Information 1A Introduction ............................................................ 1 1B Description ............................................................. 1 1C Warranty ...................................................
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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 Hea.
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.
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.
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.
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.
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°).
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.
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.
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.
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.
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.
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 f.
An important point after buying a device Laars pool/spa heater (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Laars pool/spa heater yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Laars pool/spa heater - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Laars pool/spa heater you will learn all the available features of the product, as well as information on its operation. The information that you get Laars pool/spa heater will certainly help you make a decision on the purchase.
If you already are a holder of Laars pool/spa heater, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Laars pool/spa heater.
However, one of the most important roles played by the user manual is to help in solving problems with Laars pool/spa heater. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Laars pool/spa heater along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
