Trueflow, Grant – Fieldpiece HG2 - HVAC Guide System Analyzer User Manual

Page 20

WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.COM WWW.FIELDPIECE.CO

securely seated with the sensor in contact with the
suction line. If working on a package unit make sure
you are at least 6 inches away from the compressor.

LL Pressure

(liquid line pressure): Connect the

ASX14 to the liquid line service port. Set the acces-
sory head to measure pressure and ensure the read-
ing stabilizes before locking in the reading. Enter
data manually if you want to get pressure from your
gauges. Th

e analysis is only as good as the measure-

ments. Th

e Fieldpiece ASX14 has better resolution

than most gauge sets.

LL Temp

(liquid line temperature): Measure near the

same location LL Pressure was taken. Use the ATC1,
ATC2 or ATC3 to get a good pipe temperature. Th

clamp should be perpendicular to the pipe and
should be securely seated with the sensor in contact
with the liquid line. If working on a package unit
make sure you are at least 6 inches away from the
compressor.

Condenser Air Enter Temp

(Condenser Air En-

tering Temperature): Clip a calibrated ATA1 to the
inlet of the condenser fi ns (typically on the side of
the condenser), in the shade if possible. Note that
the temperature of the air entering the outdoor coil
can be considerably diff erent than the ambient tem-
perature due to recirculation of air exiting the unit.
Determine the average temperature of the air enter-
ing the condenser.

Cond Amps Draw

(Condensing unit amp draw):

Actual amperage of the outdoor unit. For a package
system this will be the total amp draw of the unit.
Th

is measurement must be taken with another me-

ter with an AC Amp clamp (such as the SC77) and
then input manually.

TrueFlow®

e TrueFlow® meter measures the airfl ow directly

via a grid installed in place of the fi lter (or other location
that has all the indoor unit airfl ow through it).

4 TrueFlow® is the registered trademark of The Energy Conservatory.

TrueFlow®:

Default: NO. If NO, skip ahead to the

Grant section. Answering YES unlocks the inputs
for this section.

Supply Plenum Press Without Grid:

TrueFlow®

system operating pressure with the fi lter installed
and no TrueFlow® grid. Th

is is the NSOP and is

measured using the static pressure probe included
with the TrueFlow® plate.

Grid Size:

Default: 14 inches. Other selection: 20 inches.

Choose the grid size you are using.

Grid Pressure:

is is the TFSOP and is measured

using the TrueFlow® plate.

GRANT

If you are working under a grant you must add ad-

ditional information about the system to qualify for the
grant. In parts of the United States,

CheckMe!®

is used

to qualify for tax rebates and/or fi nancial incentives.
Th

ese programs have specifi c requirements that will be

available in the HG2.

Residential and commercial air conditioning con-

stitutes about 15% and 33% peak of the electricity con-
sumed in this country. Utilities or regulatory commit-
tees oft en off er grants to motivate consumers to save
energy.

In order to participate in these grants a technician

will usually have to work through a third party verifi er.
Contact your local utility to learn on how to become a
grant participant.

Test:

Default: Initial. Th

e other selection is Aft er Re-

pair.

Grant:

Default: None. Other selections will be avail-

able as grants are included. Some grants require dif-
ferent calculations.