86
i. Pull the entire burner plate assembly with blower still attached towards you. Remove or push aside any
wiring to allow the removal of the assembly.
2. Using a spray bottle filled with the FDA approved lime scale remover, spray liberally on the coils, making sure
the solution penetrates and funnels down through the condensate system. If the condensate system is blocked,
let the chemical penetrate for at least 15 minutes or until it drains.
3. Use the nylon, stainless steel or brass brush (do not use steel) and scrub coils to remove any buildup. Then
vacuum the debris from the coils.
4. Spray the coils with clear water, making sure to confine the spray to the area being cleaned (Try to avoid
getting the back ceramic wall of the appliance wet). Flush the combustion chamber with fresh water until it runs
clear from the condensate. At this point, the boiler should be ready to be re-assembled.
a. Inspect gaskets.
b. Re-install the burner assembly
c. Replace and tighten the (6) 10MM nuts to the burner plate using staggered tightening sequence. (See
detail)
d. Re-connect all wiring connections
e. Inspect the gas valve to assure the O-ring is in place.
f. Replace the (4) screws on the aluminum connector on the gas valve. Turn the gas back on.
(IMPORTANT: CHECK FOR GAS LEAKS!)
g. Re-secure the control door.
h. Replace the boiler front panel by aligning the four panel pins with the four jacket holes. Push firmly until
the panel is secure.
i. Turn the Boiler power back on and create a demand on the boiler. When boiler is lit, observe
condensate flow from the boiler. Be sure the boiler is operating properly.
j. Re-connect the condensate piping to the outside condensate connection.
Do not use solvents to clean any of the burner components. The components could be damaged, resulting in
unreliable or unsafe operation. Failure to do so could result in death or serious injury.
C. CLEANING WATER SIDE OF HEAT EXCHANGER
1. Make sure power is turned off to the boiler. Run water through the hot water system to assure it is below room
temperature.
2. Close isolation valves on the return and supply connections to the boilers as shown in the piping diagrams
within this manual. Slowly open the ball valves and release pressure into a bucket. Once pressure is released,
connect a hose to the water line to flush the boiler. Scale removing solution may be used, but must be approved
for use with stainless steel and FDA approved for use in a potable water system.
3. Thoroughly flush the heat exchanger before commissioning the unit back in service.
Summary of Contents for EL-110
Page 15: ...15 Figure 3 ...
Page 61: ...61 Figure 29 ...
Page 62: ...62 Figure 30 ...
Page 87: ...87 Figure 33 ...
Page 88: ...88 Figure 34 ...
Page 89: ...89 Figure 35 LP 293 A NOTE Parts listed on the following page ...
Page 94: ...94 ...
Page 95: ...95 ...
Page 96: ...96 MAINTENANCE NOTES ...