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HVAC Guide®
Analyzer
Field Manual
HG1 & HG2
Do it right the first time!
The HVAC Guide
®
System Analyzer will reduce your
call-backs by improving the quality of your work. By
increasing your capability, the HVAC Guide analyzer
makes you less reliant on outside technical assistance.
The display leads the technician step-by-step
through the most common HVAC tests reducing test-
ing and diagnosis time. It then makes a diagnosis and
recommends action. The HVAC Guide analyzer makes
the service call or installation faster, easier, cleaner, and
more complete.
Improper refrigerant charge is one of the primary
reasons for call-backs. It can cause compressor noise,
shorten compressor life, and lower capacity. Using the
built-in Superheat and Subcooling tests, the HVAC
Guide analyzer leads the technician through a step by
step procedure to determine if the refrigerant charge is
correct. With the proper accessory heads, no calcula-
tions, charts, or data entry are needed.
Improper airflow can cause customers to complain
that they are too hot or too cold. Once you’ve checked
the duct system for restrictions and leaks, adjust the air-
flow with the Target Evaporator Exit Temperature pro-
cedure that’s built into the HVAC Guide analyzer.
An improperly adjusted furnace or water heater will
cause your customers to call you and complain about
the temperature being too cold or the hot water not be-
ing hot enough. Use the Combustion test built into the
HVAC Guide analyzer to determine if you have the right
air/fuel mixture by analyzing the combustion products.
You can then make adjustments to ensure the equip-
ment works as it should.
The CheckMe!® test (model HG2 only) is a much
more sophisticated air conditioner test procedure that
will help diagnose more complex problems by looking
at the air conditioning system as a whole.
Do it right the first time, do it faster, do it easier, do
it more completely and avoid call-backs in the process.
Table of Contents
Do it Right the First Time! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
HVAC Guide
®
System Analyzer Controls . . . . . . . . . . . . . . . . 4
Select the Test (Switch Positions) . . . . . . . . . . . . . . . . . . . . . . . 6
Fill in the INPUT FORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Read the OUTPUT FORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
What Accessory Heads Do I Need? . . . . . . . . . . . . . . . . . . . . 10
How to Connect Accessory Heads . . . . . . . . . . . . . . . . . . . . . 11
Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.1
Target Evaporator Exit Temperature . . . . . . . . . . . . 12
2.1
Superheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Superheat and Subcooling FAQ part 1
. . . . . . . . . . . . 21
3.1
Subcooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Superheat and Subcooling FAQ part 2
. . . . . . . . . . . . 27
4.1
Combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1
CheckMe!® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Advanced Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Memory (MEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Customer ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Clearing a single input or INPUT FORM . . . . . . . . . . . . . . 52
Saving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Recalling Saved Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Contrast Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
PC Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Installing the PC Software . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Communicating with a PC . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Transfer Tests from the HVAC Guide Analyzer to a PC . 56
Transfer Tests From a PC to the HVAC Guide Analyzer . . . 58
Looking at Downloaded Data . . . . . . . . . . . . . . . . . . . . . . . 60
Editing Jobsite Information . . . . . . . . . . . . . . . . . . . . . . . . . 61
Editing Technician Information . . . . . . . . . . . . . . . . . . . . . 62
Problems Communicating with PC . . . . . . . . . . . . . . . . . . 63
Keep Your HVAC Guide Updated . . . . . . . . . . . . . . . . . . . . . . 63
Air Conditioning Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Combustion Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
John Proctor and Title 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
© Copyright Fieldpiece Instruments 2009 v.38
