Direct Vent Tankless Water Heater - Alpine Home Air Products

MaintenanceWARNINGTurn off the electrical power supply, the manual gasvalve and the manual water control valve wheneverservicing the unit.Repairs and maintenance should be performed by aqualified service technician. The appliance should beinspected annually by a qualified service technician.Verify proper operation after servicing.CleaningIt is imperative that control compartments, burners,and circulating air passageways of the appliance bekept clean.Clean as follows:1. Turn off and disconnect electrical power. Allow tocool.2. Close the water shut off valves. Remove and cleanthe water inlet filter.3. Remove the front panel by removing 4 screws.4. Use pressurized air to remove dust from the mainburner, heat exchanger, and fan blades. Do notuse a wet cloth or spray cleaners on the burner.Do not use volatile substances such as benzeneand thinners. They may ignite or fade the paint.5. Use soft dry cloth to wipe cabinet.Vent SystemThe vent system should be inspected at least annuallyfor blockages or damage.MotorsMotors are permanently lubricated and do not needperiodic lubrication. Keep fan and motor free of dustand dirt by cleaning annually.Temperature ControllerUse a soft damp cloth to clean the temperaturecontroller. Do not use solvents.Lime / Scale Build-upIf you receive Error Code “LC”, refer to the procedure,Flushing the Heat Exchanger. Refer to the section onWater Quality to see if your water needs to be treatedor conditioned. (When checking maintenance codehistory, “00” is substituted for “LC”.)Snow AccumulationKeep the area around flue terminal free of snow andice. The appliance will not function properly if theintake air or exhaust is impeded (blocked or partiallyblocked) by obstructions.Visual Inspection of FlameThe burner must flame evenly over the entire surfacewhen operating correctly. The flame must burn with aclear, blue, stable flame. See the parts breakdown ofthe burner for the location of the view ports.The flame pattern should be as shown in the figuresbelow.12 VB Series Indoor LS Manual