Raypak RAYTHERM 133-4001 Installation & Operating Instructions Manual

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Raypak RAYTHERM 133-4001 Installation & Operating Instructions Manual Manual pdf 39 page image

392. Lift burners from slotted spacer and slide from ori-fices. Clean with a wire brush.3. Clean orifice(s) as necessary.Pilot Removal and Cleaning1. Disconnect pilot tubing at pilot and sensor/igniterwire. Remove screws holding pilot bracket to burn-er tray.2. Remove pilot and bracket, clean pilot of debris,small bugs, etc., with wire or small brush.3. Replace pilot, pilot tubing, sensor ignition wiresand check for leaks.High Limit or Tankstat Removal1. Turn off electrical power.NOTE: If the heat exchanger is sooted badly, theburner hold-down bracket and spacer can becomedistorted from direct flame impingement and thisusually necessitates replacement of these parts.2. Remove front inspection panel.3. Remove wires to high limit and loosen screwsholding high limit to cabinet.4. Remove wedge clip holding sensing bulb in con-trol well.5. Remove high limit and install a new one.6. Check control operation before leaving job.Heat Exchanger Removal1. Shut water, gas and electricity off, close valvesand relieve pressure, remove relief valve. Removeside inspection panels.2. Remove top holding screws.3. Remove draft diverter, lift and remove top and fluecollector on stack type models. Remove inspec-tion panels.4. Loosen bolts and disconnect flange nuts on in/outheader, loosen union(s) at gas pipe, and slide boil-er away from piping until studs clear the heater.IN/OUTHEADERHIGH LIMITELECTRICALJUNCTION BOXREDUNDANTSAFETYSHUT-OFFVALVEMANUAL GAS VALVEMAIN GAS VALVESEDIMENT TRAPFig. 53: Model 2100–4001 Boiler Illustration