Fieldpiece HG2 - HVAC Guide System Analyzer Uživatelský manuál stáhnout pdf (Strana 20)

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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.  e analysis is only as good as the measure-

ments.  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.  e

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  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 di 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.

 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 air ow directly

via a grid installed in place of the  lter (or other location

that has all the indoor unit air 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  lter installed

and no TrueFlow® grid.  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  nancial incentives.

 ese programs have speci 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 o en o 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 veri er.

Contact your local utility to learn on how to become a

grant participant.

Te st : Default: Initial.  e other selection is A er Re-

pair.

Grant: Default: None. Other selections will be avail-

able as grants are included. Some grants require dif-

ferent calculations.

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