Page 15
LITE 2 MODEL LG POOL AND SPA HEATER
pressure setting adjuster is found on the gas
control (valve).
7. Remove the dust cover over the adjuster and,
using a screwdriver, turn the screw beneath
clockwise to increase or anti-clockwise to
decrease the pressure. Replace the dust cover
when finished
8. Turn off the burner, disconnect the gas
pressure gauge, and replace the blanking
screw in the manifold setting pressure test
nipple.
9. Relight and check for gas soundness.
10. Perform a spillage test in accordance with
BS.5440:1 to check for spillage of combus-
tion products from the heater draught di-
verter.
11. Check that the main burner responds cor-
rectly to manual ON/OFF operations of any
controls fitted in the gas control circuit.
12. Check the operation of the flame failure
safety device using the following steps:
a.Extinguish the main burner and pilot
burner by turning off the main gas inlet
cock.
b.Check that the flame failure device is
heard to close within 1 minute.
c.Wait 3 minutes, then turn on the gas and
re-light the pilot.
13. Refit the service door and return all controls
to the required settings.
3C-5. Filter Pump Operation
It is recommended that the filter pump must
continue running for at least 15 minutes after the
heater shuts off to prevent damage to the system
piping.
NOTE:
If overheating happens, or the gas
supply fails to shut off, turn off the main burners only.
You can either position the rocker switch to OFF, or
open the service door and press the red button on the
gas control. For a complete shutdown, turn off the
manual gas service cock.
3D. Inlet/Outlet Temperatures
The outlet piping carries a large volume of water
from the heater to the pool, but only a small portion of
that water is heated. The rest is bypassed. For that
reason, the pipping will not feel hot to the touch.
3E. Seasonal Care
3E-1. Spring and Fall Operation
During periods of cold but not freezing weather,
turn the thermostat down to the MIN setting if you are
only going to use the pool occasionally. This will
prevent the pool from becoming chilled and minimize
the time required to raise the pool water back up to the
desired temperature.
If you are not going to use the heater for a long
period of time, shut it down completely, following the
instructions in Section 3C-3.
3E-2. Winter Operation
In areas where freezing temperatures occur, and
the pool or spa will not be used, have your service
technician perform the following steps:
1. Shut OFF the gas valve and the LPG tank,
unless it supplies other appliances.
2. Completely drain the heater before the first
frost. To drain the heater, remove the drain
plugs (see Figure 20).
3. After all water has drained from the heater,
remove any mineral buildup in the openings.
4. Grease the threads in the header for winter
protection, but do not replace the plugs.
Figure 19. Manifold Press Check
0
10
20
30
10
20
30
