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Part number 550-142-850/0716
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WALL MOUNT GAS-FIRED WATER BOILER — Boiler Manual
Figure 151 'ASKETSBEINGPLACEDINTO$(7INLETAND$(7
RETURNPLATECONNECTIONS
3HOWNFROMREARVIEWOFENCLOSURESHOWING
ALLFOURWATERCONNECTIONS
"ACKREMOVEDFORILLUSTRATIONPURPOSES
33 Maintenance (continued)
10. !TTHEENDOFTHECLEANINGCYCLERECOVERTHECHEMICALPRODUCT
INAPPROPRIATECONTAINERSFORDISPOSAL
11. 0ERFORMAWASHINGBATHWITHPOTABLEWATERINORDERTOREMOVE
THECHEMICALPRODUCTSTILLPRESENTWITHINTHECOILSOFTHEHEAT
EXCHANGER RECOVERINGTHE LIQUID IN SUITABLE CONTAINERS FOR
disposal.
12. 2EPEATTHEWASHINGWITHWATERMORETHANONCEIFNECESSARY
13. The cleaned brazed plate heat exchanger can now be installed.
e four (4) new gaskets must be placed in the
DHW inlet and DHW return plate connections
to seal brazed plate heat exchanger.
14. Slide the brazed plate heat exchanger into rear of enclosure
(orientation arrows pointing down).
15. ,IFTBRAZEDPLATEHEATEXCHANGERSLIGHTLYUPANDALIGNWITH
DHW connections, reinstall the two (2) Phillips head screws,
TIGHTENSECURELY4ORQUETOLBFTLBFT
When re-installing components, make sure gas-
kets are in good condition and properly aligned
before tightening screws.
16. 2EASSEMBLEBOILERCOMPONENTSCHECKSEALSFORANYLEAKS
17. /PENTHEVALVEOFCOLDWATERINLETPLACEDBEFORETHEBOILER
INLET2UNWATERUNTILALLAIRISPURGEDFROMBOTHTHEBRAZED
plate heat exchanger and the primary heat exchanger.
18. "ESURETHEPRESSURERELIEFPLASTICSCREWHASBEENMADETIGHT
Loc
ation(6), see Figure 144.
19. !TINITIAL lLL AND DURING BOILER STARTUPAND TESTING CHECK
SYSTEMTHOROUGHLYFORANYLEAKS2EPAIRALLLEAKSBEFOREPRO-
CEEDINGFURTHER
%LIMINATEALLSYSTEMLEAKS#ONTINUALFRESHMAKE
UPWATERWILLREDUCEBOILERLIFE-INERALSCANBUILD
UPINTHEHEATEXCHANGERREDUCINGHEATTRANSFER
overheating heat exchanger, and causing heat
EXCHANGERFAILURE
20. Reconnect the unit to the electrical power supply us-
INGTHESWITCHANDORTHESPECIALCUTOFFDEVICESAND
turn it ON.
21. #HECKTHECORRECTOPERATIONOFTHEBOILERANDFUNCTION-
ALITYOFPRODUCTIONOFDOMESTICHOTWATER
DHW Outlet
(diverter valve)
DHW Inlet