Specifications

Part number 550-142-120/0113
– 17 –
WM97+ gas-fired water boiler — Boiler Manual
Figure 12 Installing the propane gas orifice bushing (some details omitted for clarity)
Converting boiler to propane — WM97+155 (cont.)
12. Swing the gas line to silencer bracket (item 6) back into position
and snap onto the gas line.
DO NOT ATTEMPT TO MEASURE VALVE OUTLET
PRESSURE.
The valve could be damaged by manom-
eter fluid contamination. Failure to comply could result
in severe personal injury, death or substantial property
damage.
13. After installation is complete, attach the propane conversion label
(in conversion kit bag) next to the boiler rating plate.
14. Perform complete start-up sequence (beginning on page 87),
including check for gas leaks and checking for proper operation.
15. Reinstall jacket front panel.
LEGEND for Figure 12 amd Figure 13
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
Figure 13 Gas valve and venturi