Weil-McLain Series 2 Manual page 20

® S
ERIES
Converting boiler to propane — ECO 155
Figure 17 Installing the propane gas orifice (some details omitted for clarity)
LEGEND for Figure 17 and Figure 18
1 Venturi (leave venturi attached to blower)
2 (3) hex-head screws, 5mm hex (remove and retain)
3 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
14. Perform complete start-up sequence (beginning on page 79),
including check for gas leaks and checking for proper operation.
15. Reinstall jacket door.
The jacket door must be in place during
operation.
jacket door removed except for inspection and
testing as directed in this manual.
20
2
-
G
AS FIRED WATER BOILER
DO NOT operate the boiler with the
— Boiler Manual
Figure 18
Gas valve and venturi
(continued)
Part number 550-142-190/1218