Product Overview

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Heat Exchanger Cleaning Procedure
1) Turn off electrical power and gas supply to the boiler
2) Disconnect the damper and vent connector from the boiler.
3) Remove the upper front and top jacket panels. If possible, remove the rear and left side jacket panels
4) Remove the burners.
5) Remove the blocked vent (“spill”) switch
6) Removethe¼-20nutsandwashersholdingtheuecollectorontotheheatexchanger.
7) Carefullyremovetheuecollectorgasketstripsandsetthemaside.
8) Removetheuecollectorfromtheheatexchanger.
9) Cleantheuepassagewaysusingastiffbristlebrush.Becertainthatallforeignmaterialisremovedfromthegaps 
between the pins
10) Clean the bottom surfaces of the heat exchanger
11) Putalightinthecombustionchamberandlookthroughtheuepassagesfromthetoptoverifythattheyhavebeen 
thoroughly cleaned.
12) Replacetheuecollectorgasketstrips.Ifdesired,RTVsiliconesealantwitha500°Fintermittentdutytemperaturemay
besubstitutedforthisropegasket.Theuecollectormustbethoroughlysealedtotheheatexchanger.
13) Replacethe¼-20nutsandwashersthatholddowntheuecollector
14) Reattach all the jacket components.
15) Reinstall burners, being careful to put the pilot main burner in its original location.
16) Replace the blocked vent switch.
17) Reconnect the damper and vent system.
XII. Service Instructions (continued)
CAUTION
If,duringnormaloperation,itisnecessarytoaddwatertothisboilermorefrequentlythanonceamonth,consultaqualied
service technician to check your system for leaks. A leaky system will increase the volume of make-up water supplied to the
boilerwhichcansignicantlyshortenthelifeoftheboiler.Entrainedinmake-upwateraredissolvedmineralsandoxygen.
When the fresh, cool make-up water is heated in the boiler the minerals fall out as sediment and the oxygen escapes as a gas.
Both can result in reduced boiler life. The accumulation of sediment can eventually isolate the water from contacting the cast
iron. When this happens the cast iron in that area gets extremely hot and may eventually crack. The presence of free oxygen
in the boiler creates a corrosive atmosphere which, if the concentration becomes high enough, can corrode the cast iron through
from the inside. Since neither of these failures types are a result of a casting defect the warranty does not apply.