TSI IAQ50 User Manual
Page 18
18
IMPORTANT:
Temperature readings should be taken at
the Air Handling Unit only, since there may
be components in the system that change
the temperature that are not evident upon
initial examination. Calculating Outside Air
measurements by taking readings at the
supply air to a room will not give the
correct answer. Reheat coils and chiller
coils will change the temperature of the
readings and give incorrect answers.
The general procedure for either method
is to take a reading in each of three
modes: return air, outside air, and sup-
ply air. Pressing ENTER while in %OA
mode will store all three samples and
then give you the calculated value on the
display. You may use the
5 or 6 keys
to move from mode to mode. You may
press the NEXT TEST key at any time to
exit back to normal sampling.
Note: You may press the %OA key at
any time during the following proce-
dure to exit without saving any data
and to return to normal sampling.