Lochinvar EnergyRite ER402 - Manual (Page 15)

Service Manual
15
2
Maintenance
(continued)
Figure 2-2_Gas Train and Burners
Burner removal and cleaning
ƽ ƽ WARNING The area around the burner viewport is
hot and direct contact could result in
burns.
Figure 2-1_Flame Pattern Illustration
a) Normal Flame: A normal flame is blue, with slight
yellow tips, with a well defined inner cone and no
flame lifting.
b) Yellow Tip: Yellow tip can be caused by blockage or
partial obstruction of air flow to the burner(s).
c) Yellow Flames: Yellow flames can be caused by
blockage of primary air flow to the burner(s) or
excessive gas input.
This condition MUST be
corrected immediately.
d) Lifting Flames: Lifting flames can be caused by over
firing the burner(s), excessive primary air or high
draft.
Check ignition ground wiring
1. Inspect pool heater ground wire from the combustion
chamber door to the ground terminal on the control
module.
2. Verify all wiring is in good condition and securely
attached.
3. Check ground continuity of wiring using continuity
meter.
4. Replace ground wires if ground continuity is not
satisfactory.
Check all pool heater wiring
1. Inspect all pool heater wiring, making sure wires are in
good condition and securely attached.
Inspect ignition and flame sense
electrodes
1. Remove the ignition and flame sense electrodes from
the combustion chamber door.
2. Remove any deposits accumulated on the ignition/flame
sense electrode using sandpaper. If the electrodes
cannot be cleaned satisfactorily, replace with new ones.
3. Replace ignition/flame sense electrode, making sure
gasket is in good condition and correctly positioned.
Check burner flame
Visually check main burner flames at each start up after long
shutdown periods or at least every six months.
A
burner viewport is located on the right side of the pool
heater, below the water connections on the front header.
Remove cap to view flame.