NTI Matrix Installation And Operation Instructions Manual page 27

Matrix
Combustion Calibration - To calibrate burner operation, perform the following procedure using a calibrated
combustion analyzer capable of measuring CO
1. Operate the unit at the maximum modulation rate, see Table 9-2.
2. Ensure the gas line pressure is maintained within tolerance, see Table 9-1.
3. While at the maximum modulation rate, measure the CO
Screw, to be within the limits listed in Table 9-1.
4. Operate the unit at the minimum modulation rate (Table 9-2). Ensure the combustion remains smooth and
CO and CO remain within the limits (Table 9-1). If not, do not adjust further, contact NTI for assistance.
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Flue Gas Analysis and Adjustment
Each Matrix is factory set to operate with Natural Gas, for boilers field converted to operate with Propane Gas, a
flue gas analysis and adjustment is mandatory. See Table 7-1 and propane conversion instructions.
Matrix boilers require the installation of an LP orifice prior to operating with Propane
Gas, see Propane conversion instructions for more details. 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 - The Matrix is not equipped with an integrated flue gas test port, flue gases must be sampled at the
vent termination or at the condensate drain. When measuring from the termination, ensure the combustion
gases are sampled from within the exhaust pipe by inserting the combustion analyzer probe several inches
into the exhaust pipe. When measuring from the condensate drain, remove the condensate drain trap and
insert the combustion analyzer probe into the condensate drain line while still allowing some flue gases to
vent into the room. Perform the flue gas analysis and adjust the gas Throttle/Input Screw as required until
CO and CO levels are within acceptable limits, see Table 9-1. If testing is performed via the condensate
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drain, ensure the flue gases are checked immediately to prevent high levels of Carbon Monoxide from
entering the room. Once testing is complete, re-install the condensate drain assembly and check for leaks.
Failure to re-install the condensate trap assembly will result in flue gas leakage into the
room resulting in a risk of Carbon Monoxide poisoning causing serious injury or death.
Installation and Operation Instructions
and CO from Natural and Propane Gas burning appliances:
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and CO; adjust as necessary, using the Throttle
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