Harman HydroFlex 60 Pellet Boiler - Combustion Blower Cleaning

35
3-90-233R24_11/13
Maintenance
TheboilerMUST be OFF at the circuit breaker, and COOL
beforeyouattempttocleanthecombustionblower.
Thewire to the combustion blower doesn’t need to be
disconnectedduringthecleaningprocess.
Loosenthethree(3)thumbscrewsabout4turnseach.See
Fig.23.Holdthemotorheadwithonehandandtheblower
platehandlewiththeotherhand.Pulloutwardontheplate
handleuntilthecompleteunitcomesloose.Nowrotatethe
platecounter-clockwiseabout1/8turn.Thiswillallowthe
completeassemblytoberemovedfromtheblowerchamber.
Clean the blower fanblade andthe blower plate sealing
overlap.SeeFig.24.
NOTE: Be careful not to bend the fan blade, this will
throw the fan blade out of balance or it may rub the inner
chamber, which may affect the performance of the boiler.
Any horizontal and vertical ue pipe directly above the
unit should be cleaned at this time
NOTE: The horizontal ue pipe directly above the boiler
is the rst place y ash will settle, due to the slowing
of ue gas velocity through horizontal pipe. Cleaning
of horizontal venting pipes is very important to the
efciency of this boiler.
NOTE: The exhaust probe sensing tip extends into this
same area. CARE MUST BE TAKEN NOT TO DAMAGE
THE ESP DURING CLEANING. Bending of the ESP will
make it difcult to remove if it should become necessary.
See Fig. 23.
Cleantheboilerblowerplatesealingoverlap.SeeFig24.
Makesurethereisnoyashbuildupthatmayblocktheeasy
owofuegasesintothecombustionblowerinlethole.(A
ashlightmaybenecessary.)
Combustion Blower Cleaning
Removethecombustionblowercover.Therearetwolatches
thatholdtheshieldinplace(Fig.22).Flipthelatchesupand
pulltheshieldawayfromtheboiler.
Fig. 24
SealingOverlap
5”DoubleBladedFan
(standard)#3-21-502221
Fig. 22
Latch
Blower Cover
Fig. 23
ThreeThumbScrews
Theexhaust
sensingprobe
(ESP)islocated
here.
CAUTION
!
Inspect ue pipes, ue pipe joints and ue pipe seals
regularly to ensure that smoke and ue gases are not
entering the home.