Application Note

5. Check boiler hot water
temperatures
Many buildings use a hot water
heating system. You can check
the hot water boiler temperatures
easily, quickly, and safely with
the Fluke 62 MAX+ IR Ther-
mometer. You can then adjust
the water temperature controls
to save energy and money.
A system that is even a few
degrees off over the course of
a heating season can result in
expensive energy expenditures.
6. Check steam traps
Steam trap failure can waste
energy and cause improper HVAC
system operation, resulting in a
system freeze-up. With the Fluke
62 MAX+ IR Thermometer you
can quickly identify a steam trap
that has failed either open or
closed.
2 Fluke Corporation Twenty ways the Fluke 62 MAX+ Infrared Thermometer can save you energy and time
7. Check air distribution
A room or space may have sev-
eral air distribution ducts. One
or more of them may be shut
off. With the Fluke 62 MAX+
IR Thermometer you can iden-
tify those discharge ducts that
are shut off, by checking the
discharge temperatures of the
different ducts and noting those
that do not show the correct
discharge temperature.
properly. This increases safety
because you do not need to touch
the humidifier.
11. Check chiller set
points
Many commercial buildings use
chilled water to cool the build-
ing. The chillers usually provide
water at 42 to 44 °F (5.5 to
6.6 °C). Energy will be wasted if
the chilled water temperature set
point is incorrect. You can use the
Fluke 62 MAX+ IR Thermometer to
make sure the chilled water tem-
perature provided to the building
matches the set point.
12. Check low
temperature limits
Almost all commercial air
handling units provide a low tem-
perature limit switch. To prevent
the freeze-up of a water coil, the
low temperature limit will stop
the supply fan. In some cases the
low temperature limit may be
adjusted incorrectly. You can use
the Fluke 62 MAX+ IR Thermom-
eter to check the calibration of the
low temperature limit and adjust
as needed.
Viewing the temperature of the condensate
line from a steam trap, to make sure it is
functioning properly.
Testing the steam trap to see whether the
trap has failed open and is wasting steam.
Measuring the steam temperature at the
inlet to the humidifier valve.
Looking at the water temperature at the inlet
to an air handling unit coil.
Checking the discharge temperature at air
distribution ducts.
8. Check for hot and cold
spots
A large room or area may have
hot or cold spots due to system
design or installation. With the
Fluke 62 MAX+ IR Thermom-
eter you can easily identify
these sources of discomfort and
complaints.
9. Check power supplies
in a panel
Many HVAC control panels have
multiple power supplies. You
can use the Fluke 62 MAX+ IR
Thermometer to quickly identify
the power supply that has failed
and is causing improper system
operation.
10. Check humidifier
operation
Many HVAC systems have a
humidifier installed. With the
Fluke 62 MAX+ IR Thermometer
you can quickly determine if
water or steam is present at the
humidifier and if it is operating