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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.
7.If the heater is equipped with a pressure relief valve, clean any accumulated corrosion and make sure that water runs freely through it.
8.Inspect combustion chamber and burner for corrosion and indication of improper operation.
9.Regularly inspect electrical controls for deterioration. Repair and replace as necessary.
3H-2. Professional Inspection
Inspections performed at least once a year by a qualified professional technician, are required to keep the heater operating safely and efficiently through the years. The following basic safety checks must be performed.
1.Inspect the burners and verify that they are clean.
2.Inspect the fan for damage.
3.Make sure that the pressure switch operates properly by shutting the filter pump off and on a few times. The burner should go off immediately after the pump stops. An ignition sequence should start shortly after the pump is turned back on.
4.Make a visual check of the main burner flame. The flame can be seen in a mirror arrangement held beneath the burners. The flame should be light blue with little or no yellow tips in the flame
5.Inspect the gas and electronic controls, including the following:
a.High temperature limit switch
b.Water pressure switch
c.Exhaust temperature limit switch
d.Automatic gas valve
e.Fusible Link
f.Temperature control
g.Control circuit fuse
6.Perform a temperature rise test in accordance with Section
NOTE: Keep this manual in a safe place for future reference by you and your professional technician when inspecting and servicing the heater.
SECTION 4.
Specifications and Dimensions
4A. General Information
4A-1 Specifications
1.The Laars LX and LT heaters are design certified by International Approval Services as a swimming pool heater under ANSI Standard Z21.56 for use in the United States and Standard
2.The Laars LX and LT are certified for use indoors and outdoors in the United States.
3.The Laars LX pool heater is for use with natural gas or liquefied petroleum gas. Ratings apply to either fuel.
4.The Laars LX and LT high altitude heaters are derated at the factory to compensate for atmospheric conditions at elevations higher than 3000 feet above sea level.
5.The Laars LX and LT require a 120VAC/60Hz or 240VAC/60Hz electrical supply for operation.
6.The maximum working pressure of the Laars LX and LT heaters is 75 psig.
4A-2 Dimensions
Model |
|
|
No. | 250 | 400 |
Width |
|
|
'A' | 28 1/4" | 34 1/4" |
Input |
|
|
BTU | 250,000 | 400,000 |
Shipping |
|
|
Weight | 206 lbs | 318lbs |
|
|
|
