Fieldpiece HG3 - Wireless HVAC Guide System Analyzer - Manual (Page 9)

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1 6 1 7
1.1
Target Evaporator Exit Temp Overview
Target Evaporator Exit Temp (aka Temperature Drop or Delta T) is used
to determine if the evaporator is getting the optimum airflow.
The HVAC Guide calculates the Target Evaporator Exit Temperature so
the technician can compare it to the Actual Evaporator Exit Temperature. If
the charge is correct and Actual Evaporator Exit Temperature is more than
3°F above or below the Target Evaporator Exit Temperature, an airflow prob-
lem may exist. The Target Evaporator Exit Temperature switch position is
Title 24 compliant.
An Actual Evap Exit DB Temp below the Target Evap Exit DB Temp is an
indication of low airflow.
Increasing airflow can be accomplished by eliminating restrictions in the
duct system, increasing blower speed, cleaning filters or opening registers.
After corrective measures are taken, repeat measurement procedures as often
as necessary to establish adequate airflow range. Allow system to stabilize for
15 minutes before repeating measurement procedure.1
An Actual Evap Exit DB Temp above the Target Evap Exit DB Temp
usually indicates low capacity. Occasionally airflow is higher than expected.
Look for causes of low capacity such as refrigerant mischarge or dirty con-
denser coil. If the airflow is high, correct by lowering the fan speed.
1 2005 Residential ACM Manual, Page RD-5, (#5-7)
Direction
of Airflow
A-Coil
Filter
Fan
Dry Bulb and
Wet Bulb T/C
Dry Bulb T/C
Supply Plenum
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Jacket Charging
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Light
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Service
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Light
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Service
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC
CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Clear
Input Output Sync
Recall
Enter
Save
MAX 30VDC 24VAC CONNECT ONLY TO ACCESSORY HEADS!
HVAC Guide
Fieldpiece HG3
SETUP
Target Evaporator
Logger
Exit Temp
CFM
Display
Superheat
Subcooling Combustion
CheckMe!
Data
Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging
Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging Jacket Charging
OUTPUT FORM CO2: 6.3% Excess O2: 76.8% COAF: 103ppm Net Temp: 82 ˙F Standard Eff: 85% Siegert Eff: 94% Draft Press: 0.08IWC
INPUT FORM Pressure is between 160psig and 220psig. SL Pressure: ---.-psig LL Pressure: ---.-psig Difference: ---.-psig Confirm Pressures CustomerID: __JONES123
INPUT FORM SH Table:Standard Refrigerant:R-22 OD Dry Bulb: 85.4˙F Return WB: 61.0˙F SL Pressure : ---.-˙F SL Temp: --.-˙F CustomerID:__JONES123
INPUT FORM Into Evap Return DB : 72.1˙F Return WB: 64.5˙F Out of Evap Supply DB: 55.6˙F CustomerID: __JONES123 Units:English
INPUT FORM Span: 2hours Per: 30seconds SEY SET ID:IndoorTemp Measurement: 72.8 SET ID:CompAmps Measurement: 17.2
INPUT FORM ACV
CustomerID :--JONES123 01/24/2000 04:20:22PM
OUTPUT FORM CO2: 6.3% Excess O2: 76.8% COAF: 103ppm Net Temp: 82 ˙F Standard Eff: 85% Siegert Eff: 94% Draft Press: 0.08IWC
INPUT FORM W/O Manufacturer’s Data Refrigerant: R-22 LL Pressure: 220.3psig LL Temp : 91.1˙F CustomerID:__JONES123 Units:English 12/31/2011 11:59:59PM
INPUT FORM W/O Manufacturer’s Data Refrigerant: R-22 LL Pressure: 220.3psig LL Temp : 91.1˙F CustomerID:__JONES123 Units:English 12/31/2011 11:59:59PM
INPUT FORM Into Evap Return DB: 72.1˙F Return WB: 64.5˙F Out of Evap Supply DB : 55.6˙F CustomerID: __JONES123 Units:English
INPUT FORM Refrigerant:R-410A Constrict the Charging Jacket until the difference between the SL Pressure and LL Pressure is between
INPUT FORM SH Table:Standard Refrigerant:R-22 OD Dry Bulb: 85.4˙F Return WB: 61.0˙F SL Pressure : ---.-˙F SL Temp: --.-˙F CustomerID:__JONES123
INPUT FORM Sys Type :AC Grant and Sys Info: None INDOOR UNIT Meter Device:TXV/TEV Return DB: 71.7˙F Return WB: 60.8˙F
INPUT FORM Sys Type :AC Grant and Sys Info: None INDOOR UNIT Meter Device:TXV/TEV Return DB: 71.7˙F Return WB: 60.8˙F
Memory: Com with PC Erase a Single Test Erase a Customer Erase a Grant Check Memory Status Clear Data logs Clear All Data
Memory: Com with PC Erase a Single Test Erase a Customer Erase a Grant Check Memory Status Clear Data logs Clear All Data
INPUT FORM SET ID:IndoorTemp Measurement: 72.8 SET ID:CompAmps Measurement: 17.2 Span: 2hours Per: 30seconds START
INPUT FORM DCV
CustomerID :--JONES123 01/24/2000 04:20:22PM
INPUT FORM Grille 01 ID:LivingRm1 Flow:Supply Manufacturer’s Data Free Area in sqft: 00.421sqft Velocity : 212ft/min
INPUT FORM Grille 01 ID:LivingRm1 Flow:Supply Manufacturer’s Data Free Area in sqft: 00.421sqft Velocity : 212ft/min
INPUT FORM Into Evap Return DB: 72.1˙F Return WB: 64.5˙F Out of Evap Supply DB: 55.6˙F CustomerID : __JONES123 Units:English
ARH4
Sling Psychrometer Head
ON
AUTO OFF
1%RH/mVDC 1°F/mVDC 1°C/mVDC
LO BATT
DEW POINT %RH
WET BULB TEMP
°F
°C
ON
OFF
ATH4
T1-T2 T2
T1
Function
T1 CAL T2 CAL AUTO OFF
°C
°F
T1 T2
Set meter to mVDC range to display temperature directly.
LO BATT
ON Dual Temperature Head
OFF
ATH4
T1-T2
T2
T1
Function
T1 CAL T2 CAL AUTO OFF
°C
°F
T1 T2
Set meter to mVDC range to display temperature directly.
LO BATT
ON Dual Temperature Head
OFF
AAV3
Air Velocity & Temperature Accessory
Head
ON LCD X100
LO BATT READ
ENGLISH
ENGLISH METRIC Ft/min MPH °F
M/s KM/hr °C
METRIC
AVG
NORMAL
AUTO OFF
AOX2
Combustion Check
% O % CO TEMP
ON
GAS
OIL
Lo Batt
°C °F AUTO OFF
STABLE
Fuel Type
2
2
T/C CAL
ACM3
Carbon Monoxide Accessory Head
ON
Converts 1PPM CO concentration to 1mVDC
LO BATT
ON
OFF
AVERAGE
NORMAL
AUTO OFF ZERO SET
ACH4
CAT.III 300V
400A CLAMP
AC Current Clamp
1AAC / 1mVAC
400AAC MAX
!
ASX14
Air Conditioner Superheat and Subcooling
AUTO OFF T/C CAL SET ATM
STABLE ON
LO BATT
Setting up the ATH4 and HVAC Guide
analyze to measure return dry bulb and
wet bulb temperatures between the air
filter and evaporator coil.