27
TROUBLESHOOTING
Heating Element Change
Heating element change, use following procedure:
Noisy Boiler
• Check water pressure of boiler. Should be 15-25 PSIG.
• Check for air within system. Install proper air vents and
purge unit as necessary.
This section is to assist service technician when trouble
shooting electric boiler. It is important to isolate before
proceeding. Control error codes can be helpful identifying
cause of problem. If you suspect wiring fault, check all
external wiring and wiring connections following wiring
diagram label on inside of boiler's cover. Additional wiring
diagram is included with this manual.
1.
Turn off hydronic unit circuit breaker at service
entrance and/or disconnect switch.
2.
Close gate valves near inlet and outlet of hydronic
block.
3.
Close feed line valve if using automatic ll.
4.
Open drain valve and allow water to drain from boiler.
Manual operation of relief valve will assist drainage by
allowing air to enter.
5.
Remove cabinet cover and disconnect two wires
attached to effected heating element.
6.
Remove four bolts securing heating element to casting
pry element loose. Take note of markings on element
ange to assure proper reinstallation.
7.
After element has been removed, carefully clean any
remaining gasket material from casting surface. Take
care not to scratch or score surface.
8.
Install new gasket and heating element while assuring
element is correctly positioned.
9.
Close relief valve. Open feed line valve and check for
leaks. Open gate valves. Install heating element wires
and cabinet cover.
10.
Refer to "Startup and Seasonal Maintenance" for
purging of air prior to energizing heating elements.
WARNING
Electrical shock hazard. Turn OFF electrical power
supply at service panel before making electrical
connections. Failure to do so could result in death
or serious injury.
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