Raypak 133-4001 manual Pilot Removal and Cleaning, High Limit or Tankstat Removal, Sediment Trap

NOTE: If the heat exchanger is sooted badly, the burner hold-down bracket and spacer can become distorted from direct flame impingement and this usually necessitates replacement of these parts.

2.Lift burners from slotted spacer and slide from ori- fices. Clean with a wire brush.

3.Clean orifice(s) as necessary.

2.Remove front inspection panel.

3.Remove wires to high limit and loosen screws holding high limit to cabinet.

4.Remove wedge clip holding sensing bulb in con- trol well.

5.Remove high limit and install a new one.

Pilot Removal and Cleaning

1.Disconnect pilot tubing at pilot and sensor/igniter wire. 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 wires and check for leaks.

High Limit or Tankstat Removal

6.Check control operation before leaving job.

Heat Exchanger Removal

1.Shut water, gas and electricity off, close valves and relieve pressure, remove relief valve. Remove side inspection panels.

2.Remove top holding screws.

3.Remove draft diverter, lift and remove top and flue collector on stack type models. Remove inspec- tion panels.

1.Turn off electrical power.

IN/OUT

HEADER

HIGH LIMIT

4.Loosen bolts and disconnect flange nuts on in/out header, loosen union(s) at gas pipe, and slide boil- er away from piping until studs clear the heater.

ELECTRICAL

JUNCTION BOX

REDUNDANT

SAFETY

SHUT-OFF

VALVE

MANUAL GAS VALVE

MAIN GAS VALVE

SEDIMENT TRAP

Fig. 53: Model 2100–4001 Boiler Illustration

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