Specifications

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Removaloftheheatexchanger(seefollowingillustration)
1. Takethehumidieroutofoperation,asdescribedinchapter7.5.
2. Disconnectthegassupplypipefromtheconnectiononthehumidierandcloseoffthepipe.
3. Undothescrew(s)(phillipsscrewdriver)andremovetherightsidepanel(s).
4. On RS units only:Removethehosesfromairintakemanifoldandairinletelbows.Then,dis-
mount air supply pipe at the air supply connection.
5. Dismountuegaspipeattheuegasoutletconnection.
6. Undothescrew(s)(phillipsscrewdriver)andremovetheleftandtherighttoppanels.
7. Freeallcableconnectionstothecomponents(combustionblower,ignitionmodule,airpressure
switch,etc.)oftherespectiveheatexchanger.
Important!Notetheconnectorassignment.
8. Undothecouplingoftherespectiveexiblegaspipeandremovetheexiblegaspipe.
9. Dismounttheburnerwiththeairblowerandthegaspressureregulatingvalveoftherespective
heatexchanger.
10.Unscrewthenutsandremovetheuegasmanifoldfromtheheatexchanger.
11.Unscrewthenutsontheheatexchangerandpullouttheheatexchangerfromthetank.
Re-installationiscarriedoutinthereversesequence.Replaceallsealswithnewones.Makesure
all cables are connected correctly.
DANGER! Danger of explosion!
Followingmaintenance workonthegassystem,aleakagetestmustalwaysbeundertakenin
accordancewithchapter5.5.2.