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11) Perform a combustion test. The flue gas sample may be drawn from any of the following points:
a) All stainless steel vent adaptors are equipped with a combustion test port
b) The optional concentric vent adaptor used with the T300 has no test port, but a sample can be drawn
from the condensate drain connection on the bottom of the adaptor. If this is done, disconnect the plastic
tubing from the bottom of the adaptor and temporarily plug it.
c) A sample can be drawn by inserting the combustion analyzer probe into the vent terminal.
There is also a sample port under the control console from which the combustion air in the cabinet can be
sampled (this is useful if flue gas recirculation if suspected). If this port is used, be sure to replace the rubber
plug when the test is completed.
Check CO2 (or O2) and CO at both high and low fire. The boiler may be temporarily locked into high or low
fire for 15 minutes as follows:
a) To lock the boiler in high fire, simultaneously press and hold the “Mode” button and “+“ button until
the display flashes “H”, indicating that the boiler has been driven to high fire. After this happens,
allow the boiler to operate for approximately 5 minutes before taking combustion readings.
b) To lock the boiler in low fire, simultaneously press and hold the “Mode” button and “-“ button until
the display flashes “L”, indicating that the boiler has been driven to low fire. After this happens, allow
the boiler to operate for approximately 5 minutes before taking combustion readings.
At both high and low fire, CO readings should be less than 75 PPM. Typical CO2 readings are shown in Table
10.3. Normal modulation should return 15 minutes after the boiler is locked in high or low fire.
12) Test any external limits or other controls in accordance with the manufacturer’s instructions.
13) Verify that the boiler starts and stops in response to calls for heat from the heating thermostat and indirect
water heater thermostat. Make sure that the appropriate circulators also start and stop in response to the ther-
mostats.
Figure 10.2: Dungs Gas Valve Detail
Содержание Triumph series
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Страница 31: ...29 FIGURE 6 21b CUTTING VERTICAL TERMINAL FIGURE 6 21c COMPLETING VERTICAL TERMINAL INSTALLATION ...
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Страница 48: ...46 Figure 8 14 Multiple Boiler Piping ...
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