Installation / Operation Instruction Manual

02/04/2021 32 BI810
Boiler Maintenance
The boilers are designed to give years of worry free service. Just like any other piece of mechanical
heating equipment they require annual inspection and maintenance for optimal performance.
Improper maintenance and missed inspection can lead to such issues as wire connection failure, electrical
component failure, excessive noise, and element failure.
CAUTION
ALWAYS DISCONNECT ELECTRIC POWER FROM BOILER BEFORE PERFORMING MAINTENANCE.
1. Boiler Water – water treatment is strongly suggested to prevent scale deposits, corrosion, and
other chemicals that can be harmful to the boiler elements and internal components. Periodic
testing of the boiler water should be performed to maintain water properties as described in this
manual, see water treatment section. A qualified water treatment specialist should be consulted to
establish a proper water treatment program.
2. Electrical System – dust build up, foreign matter, and excessive moisture can cause damage to
boiler contactors, relays, and wiring connections. Inspect both the interior and exterior of the
boiler and clean as needed. Always clean the interior of the boiler with source power OFF.
a. Electrical Connections – with power OFF, routinely check the tightness of electrical
connections. This includes power entrance lugs, fuses or contactors, and circuit breakers.
b. Contactor Inspection – check for burned contacts, discolored wire connections, and
overheated coils. Contactors that chatter or hum should be thoroughly cleaned and
inspected. Replace as needed.
c. Heating Element Inspection – make sure wire connections are tight and corrosion free.
d. Overall Inspection – check the entire boiler wiring harness for frayed or damaged wires.
Replace any damaged wires that may come in contact with metal parts.
3. Boiler Mechanical System – routinely inspect the boiler and adjacent piping for any signs of
water leaks or corrosion.
CAUTION
ALWAYS DISCONNECT POWER WHEN SERVICING INTERNAL COMPONENTS OF THE BOILER.
a. Boiler Elements – these are screw-in elements with gasket. If there is indication of a leak
near an element, remove the element and inspect the element gasket. Clean the element
and boiler threads. Clean or replace the element gasket as needed. DO NOT
OVERTIGHTEN ELEMENTS.
b. Check for leaks – repair any leaks on the boiler or piping near the boiler which may cause
water to enter the boiler enclosure.
c. Boiler Vessel Inspection – the interior of the boiler vessel must be inspected annually.
Remove the 3” inspection plug on the inlet side of the boiler. If there is evidence of scale
or excessive sediment inside the boiler vessel, proper steps must be taken to flush and
clean the boiler. Consult a local water treatment company for the best course of action.
Scale formation will shorten the life of the elements and cause unpredictable control
issues as well as excessive noise.
d. While inspecting the boiler vessel, remove and clean the low water cut off probe.