Install Instructions

&IGURE

Air silencer removal

&IGURE Removal of Natural gas venturi

&IGURE Installing the new propane gas venturi

Part number 550-100-131/0715

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GAS-FIRED WATER BOILER — Boiler Manual

&IGURE

Gas pipe loosened for propane conversion

3. If the jacket front door was not already removed, remove it.

4. Locate the blower and venturi (see Figure 11).

5. Gently pull on both silencer retaining clips (Figure 11, item

2) and remove air silencer from front of venturi (item 3).

6. Disconnect wire harness from gas valve.

,%'%.$for Figures 11, 12, 13 and 14

 Air Silencer

Air silencer clips (2)

Venturi

 Blower

 Gas valve

 Gas pipe

 Swivel nut

 Garlock Washer

7. Loosen swivel nut (Figure 11, item 7) on venturi-gas valve

connection (item 6). See Figure 12. Gently set gas valve a side.

8. Remove three (3) slotted T20 Torx screws holding the

venturi, (3, Item 3) in place. Remove venturi, o-ring, and

inspect blower surface. Discard old o-ring and washer

gasket. See Figure 13.

9. Install new propane venturi and o-ring from conversion kit.

10. Make sure o-ring is seated properly in groove on blower.

11. Insert three (3) new slotted Torx screws from conversion

kit to hold venturi in place. Torque screws to no more than

23 inch-pounds.

12. Reassemble gas pipe with new ﬁber washer from conversion

kit to the venturi connection, using two wrenches to tighten

Gas conversions (continued)

5SETWOWRENCHES when tightening gas piping at

boiler, using one wrench to prevent the boiler gas

line connection from turning. Failure to support

the boiler gas connection pipe to prevent it from

turning could damage gas line components.