TIF VA500A Digital HVAC Analyzer - Manual (Page 26)

Figure 16
Figure 17
Figure 18
Page 13
IMPORTANT: Review Step 5.4.6
and diagram*, before starting
Step 5.5.7 & 5.5.8
5.5.7 Place the probe in front of
the outlet so that the
sensor’s cover is facing the
outlet. Press ENTER,
"WAIT" will flash.
No need to move probe at
this time, the VA500A is
waiting until the sensors
stabilize with the new
TEMP. and HUM. readings
(about 90 seconds) then
“START AVERAGE" will
flash (Fig. 17)
5.5.8 Measure for one minute
(Fig.14 step 5) making
sure to move the probe
over the complete area of
the grill (Ref. Step 5.4.6)
Aim at getting an average
reading from all available
openings. At the end of
one minute the unit will
beep and the LCD screen
will display the results in
Btu/h.(Fig.18)
5.5.9 To repeat this measure-
ment, the return air and
grill size are already in
memory, simply press
ENTER and repeat
sections 5.5.3 -5.5.8
above.