Bacharach 450 Operating & Maintenance Instructions
                                                                                      | |
Contents
| 
ECA 450 OperationInstruction 0024-9400 272.14 Primary Air Temperature MeasurementTo properly calculate net stack temperature, the analyzer must know theburner’s primary air temperature. The following sections describe fourmethods of measuring and supplying this temperature value to the analyzer.2.14.1 Thermocouple MethodA thermocouple that is plugged into the T-AIR connector (see Figure 1-1)provides the analyzer with the most up-to-date primary air temperatureinformation for combustion efficiency calculation purposes. Refer to Section1.5.2 T-AIR.If the burner’s primary-air supply is being drawn in from the room, thensimply place the thermocouple where it can sample room air. If, however, theair supply is being drawn in from an outside source, where the temperatureis different from that of room air, then immerse the thermocouple into theburner’s primary-air stream.Note that when a thermocouple is plugged into the T-AIR connector, itstemperature reading takes priority over all other methods of temperaturemeasurement.When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,the designation (T) will appear to the left of the temperature value. The letter“T” signifies that a Thermocouple is being used to measure the primary airtemperature.For example:T-AIR 86.5 °F (T)2.14.2 Probe Thermocouple MethodThis method has an operator taking a one-time primary air temperaturemeasurement using the probe’s T-STACK thermocouple, and then storing themeasurement in the analyzer’s temperature memory buffer.When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,the designation (M) will appear to the left of the temperature value. Theletter “M” signifies that the primary air temperature value was Measured.For example:T-AIR 86.5 °F (M)Measure the primary air temperature using the probe’s thermocouple, andstore that measurement as follows:1. Press SETUP key to display the Setup List screen. |
Related manuals for Bacharach 450
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine