Bradford White RTG 199HE Installation Instructions Manual page 11

9 Measuring carbon dioxide (CO
Note: After installation of the outdoor vent cap, measuring CO
for proper levels is recommended before operating the
appliance. See water heater installation manual for details.
WARNING:
Outdoor vent cap will get very hot during
operation.
▶ Ensure the vent cap is cool before
performing the procedure below.
▶ To measure CO on this appliance, a test port is available
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under the louvered grill on the front of the outdoor vent
cap.
▶ To access test port, remove two screws on either side of
the louvered grill.
▶ Pull louvered grill free from vent cap.
▶ Insert combustion gas analyzer probe approximately 4
inches straight into test port. Do not slope probe up or
down.
▶ Confirm CO is within proper range specified in the water
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heater installation manual. Refer to water heater
installation manual if any adjustment is necessary.
▶ When measuring is complete, replace louvered grill with
screws.
Fig. 23
[1] Test port.
Outdoor kit – 6 720 811 755 (2014/05)
)
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Measuring carbon dioxide (CO2)
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