Installation and Operating Data FOR YOUR SAFETY - This product must be installed and serviced by authorized personnel, 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.
TABLE OF CONTENTS SECTION 1 General Information SECTION 3 Operating Instructions 1A 1B 1C 3A 3B 3B-1 3B-2 3B-3 Introduction ............................................................ 1 Description ............................................................. 1 Warranty ................................................................
LX and LT Pool Heaters Page 1 SECTION 1. General Information SECTION 2. Installation Instructions 1A. Introduction 2A. General Requirements 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 exactly. To obtain additional copies of this manual contact Waterpik Technologies.
Page 2 It is best to handle these preparations before the heater is installed in its final location. Instructions are provided in subsequent sections of this document. Contact Waterpik Technologies regarding installations at elevations above 3,000 feet (980 m). It is necessary to make changes to the burner tray to assure proper operation. 2C. Heater Location 2C-1. Installation Information The LX and LT can be installed outdoors or indoors as outlined in later sections.
LX and LT Pool Heaters 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 way with an inhabited area of a building, even though the access might be through another structure (e.g., a garage or utility room.
Page 4 INDOOR VENT COLLAR GASKET 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, etc. See applicable codes for details.
LX and LT Pool Heaters Page 5 ROOF JACK FOR GARAGE INSTALLATION BASE OF HEATER MUST BE A MINIMUM OF 18 INCHES (46 CM) ABOVE THE FLOOR 2) Figure 6. Indoor Installation Venting (USA), or Outdoor Shelter (Canada). 2F-4b.Vent Pipe Sizing and Installation As part of their certification, the LX and LT have been determined to be a Category I Fan-Assisted appliance. They are intended for standard vertical venting per tables provided in most local codes for Category I FanAssisted appliances.
Page 6 b. 5. 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) 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. Table 4 specifies sizing for gas supply piping based on 1/2 WC (3.45 kPa) pressure drop in the piping.
LX and LT Pool Heaters Wiring Diagram Page 7 (6 8) 5( 05 2)6 1$57 $ .% ` 9 '1 ' + /$ * 1, 7 9 5 < * %. 53 +& + 7, 6(+ 7, *, ,0 &,7 / + : 6 : 6 36 36 5% .% / 5 % % * < $ 5 * $/8 7( 6 $1 (5 0 + ,7& : 71 6 9( ( (5: 568 2/ (65 % 3 +& 7, : 6 : : 53 J4-2 %. 6$ 9(/ * $9 71 71 9( (9 63 63 : : ( 6 1 6( ( 0 $ / ) J4-1 5 ( ,7 1 * , ' ( 5 (7 , + : < * 25 3 5 : 99 00 < 9 9 0 0 < .% . % .% 5% 5 : %5 : + ,7 : (7 , + : ( & $ 5 7 ( .
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 petroleum (LP) gas is heavier than air. Therefore, do not install pool heaters using LP gas in pits or locations where gas might collect.
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 Wire Gage (AWG) No. 14 gauge stranded copper wire with a temperature rating of 221°F (105°C) or greater (see Figure 11). 2H-4. Remote Operation (Model LX Only) LEFT SIDE OF RACEWAY REMOVE JUMPER WIRE TERMINAL BLOCK Figure 10. Remove Jumper from Terminal Block Figure 11.
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 go to step 5. If the revision level is "G" or lower, replace the chip. Directions for removal and installation of the chip are provided in the new PPD Kit .
LX and LT Pool Heaters 2. 3. 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. Remove the control panel assembly from the top panel. Lift the control panel cover. Remove the two philips head screws located at the front edge of the bezel. Lift the front of the bezel up until the entire assembly comes away from the top.
Page 12 26. Route the wires that attach to the temperature sensor along the copper siphon loop, back to the right side of the heater. Reconnect the wires to the tabs on the back of the control panel (marked as J4-1 and J4-2). 27. Use plastic wire ties to refasten the temperature sensor and high limit switch wires to the copper siphon loop. Bundle the wires near the control panel and fasten them with a wire tie. 28.
LX and LT Pool Heaters Page 13 COUPLING NUT O-RING PVC OR CPVC PIPE COUPLING Figure 16. Piping to Heater. 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 the vent switch outlet. Doing so may cause the heater to malfunction. 41.
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 be fitted to the heater. To connect a section of 2 PVC or CPVC pipe to the heater, first slip a coupling nut onto the pipe.
LX and LT Pool Heaters 13. Reinstall the adapter, with the PRV, into the plastic threaded hole and tighten it until the mark on the adapter is once again facing the same direction as the water connections on the header. CAUTION Do not use any pipe compound or pipe dope on the threads of the adapter or any part that comes in contact with the plastic headers. These compounds may damage the header over a period of time. DO NOT TIGHTEN WITH A WRENCH. Overtightening may crack the header.
Page 16 CAUTION Do not operate this heater outdoors at temperatures below 20 degrees Fahrenheit (°F) (-7 degrees Celsius [°C]). 2J-2. Start-up Confirm that pool water is flowing normally through the pool system and equipment. Start the heater in accordance with the Operating Instructions section of this manual, with particular attention to the lighting and shutdown instructions and temperature control operation. The heater may not start on the first try.
LX and LT Pool Heaters Pry off cap to adjust Figure 19. Adjustment of Pressure Switch. 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 17 The bypass assures constant heat exchanger flow even though flow through the filter system will vary depending on how dirty the filter is.
Page 18 5. 6. 7. Start the heater by setting the control panel to either "Pool" or "Spa". Allow the heater to operate for five minutes or more. Note and record the thermometer reading. Subtract pool water temperature from this reading. This difference is the temperature rise. Refer to Table 8. If your measured temperature rise is within the range designated for your heater, skip steps 6 through 8. Locate the bypass adjustment screw on the right-hand side of the header (see figure 20).
LX and LT Pool Heaters Page 19 CAUTION Keep all objects off the top of the heater, and do not obstruct louvre openings in heater sides. Blocking ventilation air flow may damage the heater and void the warranty.
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.
LX and LT Pool Heaters Page 21 LX/LT HEATER SERVICE DIAGNOSTIC GUIDE DISPLAY CODE PRESS SW * (pressure switch) CAUSE 1. Pump is not running. 1. This is a normal display when the pump is OFF. No Service Required. 2. Low pump pressure. 2. Clean filter or clear blockage/check position of valves in plumbing system. 3. This is a normal display when a device connected to the “Fireman Switch” operates to open the safety circuit on the heater. 4. Adjust or replace pressure switch.
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 must be reset to fire.
LX and LT Pool Heaters Page 23 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. This appliance does not have a pilot light. It is equipped with an ignition device which automatically lights the heater. Do NOT try to light the burners by hand. B. BEFORE OPERATING, smell all around the appliance area for gas.
Page 24 3D-2a. Spa Water Chemistry Maintaining safe water conditions in a spa can only be done by regular water changes and the proper addition of sanitizing chemicals. Kits are available from your local pool supply dealer for making the various tests for mineral content. One of these kits will detect copper in the system. This is usually a warning that corrosion is taking place, possibly due to a low pH value combined with other chemistry problems.
LX and LT Pool Heaters 6. Page 25 During the winter shut down the heater by following the lighting and shutdown instructions in Section 3A. When on vacation for longer than a week, make sure the heater is shut off at the temperature control panel. 7. Where possible, shelter the pool from prevailing winds with well-trimmed hedges or other landscaping, cabanas, or fencing. 8. Always use a pool cover when practical.
Page 26 3. 4. 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. Check for spider webs and other debris in the heater and vent outlet especially at spring start up. 3H-2.
LX and LT Pool Heaters Page 27 SECTION 5. Parts List Key ORDER No. Description 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 Numbers Key No. Description Model No.
Page 28 5C.
LX and LT Pool Heaters Page 29 5C-2 Detail View 35 52 27 29 6 7 8 37 51 53 15 16 17 77 4 14 34 33 19 18 30 31 32 41 43 5 3 40 2 12 11 11 43 42
LIMITED WARRANTY Thank you for purchasing Jandy® pool and spa products. Water Pik Technologies (manufacturer of Jandy products, including Laars® pool and spa heaters) warrants all parts to be free from manufacturing defects in materials and workmanship for a period of one year from the date of retail purchase, with the following exceptions: • AquaLink® RS units installed with Jandy Surge Protection Kits will be covered for two years.
