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&IGURE Installing the propane gas orifice bushing (some details omitted for clarity)
Converting boiler to propane — ECO 155 (cont.)
14. Perform complete start-up sequence (beginning on page 75),
including check for gas leaks and checking for proper operation.
15. Reinstall jacket door.
4HEJACKETDOORMUSTBEINPLACEDURINGOPERA-
tion.
DO NOT operate the boiler with the jacket
door removed except for inspection and testing as
directed in this manual.
,%'%.$for Figure 14 and Figure 15
1 Venturi (leave venturi attached to blower)
2 (3) hex-head screws, 5 mm hex (remove and retain)
3 Honeywell gas valve
4 Air silencer (leave connected to venturi)
5 Flexible gas line
6 Gas line to silencer bracket (rotate forward before disconnecting gas valve
from venturi
7 Propane orifice (in propane conversion kit envelope)
8 Rubber grommet (must be installed in valve for all applications) — make
sure grommet is properly seated in valve before inserting the propane
orifice
&IGURE Gas valve and venturi
Part number 550-142-122/0513
16
TM
GAS-FIRED WATER BOILER — Boiler Manual
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