Install Instructions

Figure 12 Installing the propane gas orifi ce (some details omitted for clarity)
7. See Figure 12 . Insert the propane gas orifi ce (item 4) into the gas
valve outlet as shown.
8. Press the orifi ce into the gas valve outlet until the bushing fl ange
butts against the gas valve outlet.
Inspect the O-rings on the propane gas orifi ce an on the
gas valve outlet (item 5, Figure 12 ). The O-rings must
be in good condition and must be installed. Failure to
comply will cause a gas leak, resulting in severe personal
injury or death.
9. Reposition gas valve into the venturi and reinstall the gas valve
retention ring (item 3, Figure 12 ).
DO NOT ATTEMPT TO MEASURE VALVE OUTLET
PRESSURE.
The valve could be damaged by manometer
fl uid contamination. Failure to comply could result in
severe personal injury, death or substantial property
damage.
10. After installation is complete, attach the propane conversion label
(in conversion kit bag) next to the boiler rating plate.
11. Perform complete start-up sequence (beginning on page 91 ),
including check for gas leaks and checking for proper operation.
12. Reinstall jacket door.
LEGEND for Figure 12
1 Gas valve
2 Venturi
3 Gas valve retention ring
4 Propane orifi ce with o-ring
5 Gas valve o-ring
6 Pressure reference hose — LEAVE CONNECTED AT BOTH
ENDS
The jacket door must be in place
during operation.
DO NOT operate
the boiler with the jacket door removed
except for inspection and testing as
directed in this manual.
Part number 550-100-191/0917
16
®
gas-fired water boiler — 70/110/155 Boiler Manual
Converting boiler to propane — EVG 70
(continued)