Cleaning The Boiler; Cleaning The Optional Stainless Steel Drain Tank (Accessory); Replacing The Boiler; Installing The Boiler - Elsteam KT Series Manual

9.3 Cleaning the boiler

• Dischargewaterfromthehumidifier(see"8.2 MANUAL WATER DISCHARGE" ON PAGE 26);
• Turn off the power from the machine using the external disconnector;
• Openthepanelsofthehumidifierasdescribed"4.3 INSTALLATION" ON PAGE 12;
• Disconnect the electrode cables from the contactor;
• Takecarenottodamagetheamperometrictransformer(AT)ontheelectronicboard;
• Disconnect the steam supply pipe at the top of the boiler;
• Disconnect the sleeve connector at the bottom of the boiler;
• Unscrewthetwoscrewsonthetopofthehumidifieranddisconnectthesolenoidvalvethatfeedsthewater.
• Lift the boiler up slightly until it comes off its supports at the bottom and pull it straight out of the cabinet;
•  P lacetheboilerinabucketwithasolutionofcitricacidoraceticacidovernight(theboilermustbecompletelyfilledwith
the solution);
• Remount the boiler.

9.4 Cleaning the optional stainless steel drain tank (accessory)

• Disconnect the basin from the drain;
• Removethebasinfromthebottomofthehumidifier;
• Remove any built-up limescale and clean the basin under running water;
• Placethebasinbackinitsoriginalpositionandreconnecttothedrain.

9.5 Replacing the boiler

• Dischargewaterfromthehumidifier(see"8.2 MANUAL WATER DISCHARGE" ON PAGE 26);
• Turn off the power from the machine using the external disconnector;
• Openthepanelsofthehumidifierasdescribed"4.3 INSTALLATION" ON PAGE 12;
• Unscrewthetiethatblockstheinspectioncap;
• Removetheplugandcleanthehumidifierofanylimescale;
• Puttheinspectioncapandthetiebackinplace.
• Unscrewthetwoscrewsonthetopofthehumidifieranddisconnectthesolenoidvalvethatfeedsthewater;
• Lift the boiler up slightly until it comes off its supports at the bottom and pull it straight out of the cabinet;
• Insert the new boiler as described "9.6 INSTALLING THE BOILER" ON PAGE 29;
•  D ependingonthemodelofKThumidifierinstalled,makesurethecableconnectionsfromtheboileraretightened
properly (see "6. ELECTRICAL CONNECTIONS" ON PAGE 18);
• MakesurethecablethatgoesfromtheboilertothecontactorgoesthroughthetransformerAT.

9.6 Installing the boiler

• Place the boiler on its supports;
• Connectthesolenoidvalvetofeedthewaterandscrewthetwoscrewsonthetopofthehumidifiertight;
• Insert the inspection cap and tighten the tie;
• Insertthepanelsofthehumidifierasdescribed"4.3 INSTALLATION" ON PAGE 12
924KTE4.01 - KT series humidifiers
Fig. 26. Passing the cable through the AT
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