Models 600 - 850 - Lochinvar FTxl 400 Installation & Operation Manual

2
Prepare boiler
Figure 2-2A 400 Model_Venturi with LP Orifi ce
Figure 2-2B 500 Model_Venturi with LP Orifi ce
(continued)

Models 600 - 850

1. Lift the top bezel (prop the bezel up for service).
2. Remove the cover on top of the gas valve (FIG. 2-3).
3. Use a combustion analyzer to verify CO
4. After adjustment is complete, attach the propane
5. Replace the gas valve cover and lower the bezel.
Figure 2-3 Gas Valve Adjustment - Models 600 - 850
Installation & Operation Manual
of 9.0 – 11.0%. If not, adjust the screw counterclockwise
incrementally to raise CO
2
(FIG. 2-3).
conversion label (in the conversion kit bag) next to the
boiler rating plate. Attach the LP caution label (in the
conversion kit bag) to the rear of the boiler underneath
the gas supply piping.
Failure to check and verify combustion
WARNING
could result in severe personal injury,
death, or substantial property damage.
is within the range
2
and clockwise to lower CO
15
2