Lx – WH Series Installation and Operation Instructions
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Trinity Lx
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Flue Gas Analysis and Adjustment
Each Trinity Lx is factory set to operate with Natural Gas, for water heaters field converted to operate with
Propane Gas, a flue gas analysis and adjustment is mandatory. See Table 7-1 and propane conversion
instructions.
Models Lx200WH-Lx400WH require the installation of an LP orifice prior to operating
with Propane Gas, see Propane conversion instructions for more details. To convert the
Lx500WH to operate with Propane Gas requires field calibration of the throttle/input
screw; see “Lx500WH Adjustments” in Section 9.0 and Propane conversion instructions.
Models Lx600WH-Lx800WH only operate with Natural Gas; conversion to Propane is
not an option. Failure to follow these instructions will result in property damage,
personal injury or death.
Failure to perform the flue gas analysis and adjustment detailed in this section may result
in erratic and unreliable burner operation, leading to reduced efficiency, increased fuel
consumption, reduced component life, heat exchanger combustion deposits, and general
unsafe operation. Failure to follow these instructions may result in serious injury or
death.
Analysis
- Trinity Lx flue gas test ports are located in the flue outlet adapter assembly. Test port access is either
from inside the water heater cabinet (Lx200WH; Figure 9-6) or from outside the water heater cabinet
(Lx300WH-Lx800WH; Figures 9-7 and 9-8). Remove the test port plug, perform flue gas analysis, and adjust
throttle/input screw as required until CO
2
and CO levels are within acceptable limits, see Table 9-1 Line
Pressure and Combustion Parameters
.
Once flue gas sampling completed, re-install test port plug. For model
with a threaded plug, seal threads with Teflon tape before reinstalling plug.
Failure to re-install the test port plug will result in damage to the unit, property damage,
fire, explosion, serious injury or death.