Waterpik Technologies pool/spa heater 2I-2.Pool/Spa Piping Systems, LX and LT Pool Heaters

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.The gas line may enter the heater from either the left side or the right side. Replace the button plug washer in the hole through which the gas line will enter the heater.

42.Use the button plug to cover the hole on the opposite side of the heater.

Note: Be sure that the white fiber gasket is positioned on the top flange of the exhaust vent.

43.Replace the top. While positioning the top, pull the control panel through the hole and place it on top of the panel. Fasten the top to the heater by replacing the two hex head screws at the upper corners of the raceway and the two philips head screws at the upper corners of the rear panel.

44.Position the vent grill over the exhaust vent. Replace the four philips head screws that fasten the vent grill to the top.

45.Reinstall the control panel assembly into the top panel. Slide the back of the bezel into place, then lower the front, aligning the holes in the bezel with the holes in clips on the tabs on the top panel. Replace the two philips head screws located at the front edge of the bezel.

46.Slide the raceway cover up to the top of the heater. Be careful not to pinch any wires. Replace the two screws on the bottom flange to hold the cover in place.

47.Replace the front panel (door).

2I-2. Pool/Spa Piping Systems

Figure 15 illustrates typical piping for pool equipment in pool/spa combination pools. With their electronic temperature controls, the LX and LT are particularly suited for this type of pool installation.

The heater must be protected from back-siphoning of water, which can result in dry starts. If there is any chance of back-siphoning, provide a check valve between the pool and the filter pump inlet.

Arrangement of pool system components other than as illustrated in these diagrams can affect the operation of the heater’s water pressure switch. Location of the heater above or below the pool water surface can also affect operation of the switch. In general, the pressure switch can be adjusted to accommodate this effect if the heater water connections are no more than six feet below the pool water surface and no more than 15 feet above it. See instructions for pressure switch adjustment in the heater start-up section of this manual for more information about this.

Note that when pool equipment is located below the pool surface a leak can result in large scale water loss or flooding. Waterpik Technologies cannot be responsible for such water loss or flooding or the damage caused by it.

Do not install a shutoff valve or any kind of variable restriction in the water piping between the heater outlet and the pool/spa.

Pool systems with water flow rates higher than 125 GPM require an adjustable external bypass at the heater.