Install Instructions

12
HEAT EXCHANGE INTEGRITY TEST
There are many methods to test heat exchange integrity. One of these is to observe the Excess Air, O2 and CO readings both before and
after the blower turns on. If the heat exchanger is sealed, your O2 and CO readings should remain fairly stable. A breach in the heat
exchanger may allow fresh air to be forced into the flue after the blower turns on due to pressure increase in the plenum. The result
may be a rise in the measured O2 in the stack gas and an increase in Excess Air. In some sealed systems the fresh air drawn in through
the breach may reduce the combustion air available leading to an increase in the CO reading. If either of these situations are present it
is probable there is a problem with the Heat Exchanger which may require additional testing and inspections.
NOTE: Many cracks are invisible to borescopes or the naked eye, and only open or separate from pressure or temperature changes
during operations. Rotate dial to “EXCH TEST” Rotate test selector to “EXCH TEST”. Call for heat on the system. Observe and wait for
O2 readings to stabilize.
ROOM CO TEST
No probes or hose connections are required for this test.
Rotate selector dial to Room CO
Press Enter Button to select GENERAL test type
CO readings will be logged every minute for 30 minutes.
Readings will be saved once the 30 minute test is completed.
Test results and LOG number will be displayed.
Press Print Button to Print the test results.
This LOG will be saved in the LOGS/ROOM CO MENU screen.