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5.Be sure all combustion air and ventilation open- ings are not blocked.
3H-2. Professional Inspection
In addition, annual inspections by a qualified professional technician are recommended to keep the heater operating safely and efficiently through the years. The following basic checks should be performed.
1.Check for loose or broken wires and terminal connections.
2.Verify pressure switch operation by cycling the spa pump on and off a few times. The heater should go off immediately after the pump stops.
3.Inspect the electrical controls, specifically the following:
a.High limit controls.
b.Pressure switch.
c.Temperature control.
d.Automatic gas valve.
4.Inspect the venting system for blockage, leakage, and corrosion.
5.Check for spider webs in the pilot and main burner orifices — especially at Spring startup.
6.Conduct a normal operating cycle and observe that the sequence proceeds as intended.
7.Inspect the external surfaces of the heat exchanger tubes for black carbon soot buildup by placing a mirror between and under the burners when the heater is firing. Remove any soot that has collected on the tubes, and correct the cause.
NOTE: After installation and first startup, check the heat exchanger for black carbon soot buildup after the following periods of operation: 24 hours, 7 days, 30 days, 90 days, and once every 6 months thereafter.
Proper flames appear:
a.Blue in color.
b.1 to 4 inches (25 to 102mm) high above burner surface.
SECTION 4.
Parts List for Laars Lite Heater
4A. General Information
To purchase parts or obtain a comprehensive maintenance manual for the Laars Lite heater, contact your nearest Teledyne Laars dealer or distributor. If they cannot supply you with what you need, contact the Customer Service Manager, Teledyne Laars, 6000 Condor Drive, Moorpark, California, 93021, Telephone (805)
4B. Parts List
Description | PartNumber | |
A. VENTING ASSEMBLY |
| |
1. | Top Enclosure Weldment | |
2. | Top Filler Plate | |
3. | Flue Collector | |
|
| |
4. | Rainshield Kit | |
|
| |
**5. | Redundant Limit (LLG) | R0313900 |
6. | Drafthood Kit | |
|
| |
7. | Vent Cap Kit | |
|
| |
B. JACKET COMPONENTS |
| |
1. | Jacket Assy | |
2. | Gap Closures | R0318400 |
3. | Door w/Latch | |
4. | Fusible Link Assy | R0012200 |
5. | Pressure Switch, 2 psi | R0013200 |
5. | Pressure Switch, 1 psi | R0011300 |
5. | Pressure Switch, | R0015500 |
6. | Tube, Siphon Loop | 10545200 |
7. | Grommet Kit | R0316300 |
*8. | Ignition Control Assembly (LLD) | R0317500 |
C. COMBUSTION PANEL ASSEMBLY |
| |
1. | Chamber panel side, left/right | R0316600 |
2. | Chamber panel back | |
*3. | Chamber panel front (LLD) | |
**3. | Chamber panel front (LLG) | |
*4. | Ignitor (LLD) | R0317200 |
*5. | Ignitor Assembly (LLD) | R0317400 |
D. HEAT EXCHANGER ASSEMBLY |
| |
Complete Heat Exchanger Assy | ||
1. | Cast Iron Return Header | R0058300 |
2. | Cast Iron Inlet/Outlet Header | R0056400 |
3. | Bronze Return Header | R0054600 |
4. | Bronze Inlet/Outlet Header | R0016800 |
5. | Heat Exchanger, Tube Assy | |
6. | Header Gasket Kit | R0050800 |
7. | Flange Assy | R0055000 |
8. | Cast Iron Flow Valve Assy | |
8. | Bronze Flow Valve Assy | |
9. | Bracket Heat Exchanger | 10457000 |
10. | Baffle, Heat Exchanger, 8 | |
11. | Clamp, Holddown | 10726200 |
12. | Bracket, Holddown | 10726300 |
