Fieldpiece SMAN320 - 3-Port Digital Manifold - Manual

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Quick Start
1 Install six AA batteries into rear battery com-
partment. Batteries included in packaging.
2 Press the center blue button for 1 second to
turn on your new manifold.
3 Connect hoses and ATB1 thermocouples to
the manifold and the system.
4 See all your pressure and temperature mea-
surements in real-time all at once!
Certifications
C-Tick (N22675)
CE
RoHS Compliant
Description
Your SMAN320 is a handy two-valve Digital
Manifold for HVACR professionals. See all your
pressures and temperatures at the same time
on the redesigned large display with bright
blue backlight.
SMAN320 combines high precision, absolute
pressure sensors, a superheat/subcooling
calculator, and dual temperature measurements.
Your SMAN320 calculates and displays target
superheat and actual superheat to verify proper
charge.
SMAN320 is designed to meet the demands
of HVACR field service with a rugged rubber
boot for durability, a strong metal hanger for
easy storage. SMAN320 has a very intuitive user
interface and long battery life.
Your SMAN comes pre-programmed with
the most accurate P-T charts for 45 of the most
common refrigerants in the field so you are
always prepared for any job.
Fieldpiece
Digital Manifold
OPERATOR'S MANUAL
Model SMAN320
Controls
1 Insert Type K thermocouple plugs here.
2 Temperature calibration pots.
3 Press to zero atmospheric pressure.
4 Press to calibrate to refrigerant tank.
(See Advanced Pressure Calibration section.)
5 Press to confirm selection.
6 Press/hold to cycle through refrigerants.
7 Press to enter Target Superheat mode.
8 Press to scroll up/down to adjust values.
9 Press to adjust units.
10 Hold 1 second to power on or off. Press to toggle backlight.
11 Turn clockwise to close High side port.
12 Turn clockwise to close Low side port.
Functions
Superheat and Subcooling
Your SMAN320 calculates and displays both superheat and
subcooling simultaneously.
1 Select the appropriate refrigerant using the REFRIGERANT button.
2 Connect EPA approved refrigerant hoses to low and high side on
SMAN320. Plug Type K ATB1 thermocouples into SLT and LLT.
3 Connect your SMAN320 to the system:
Superheat: Hand tighten low side hose to suction line service
port. Place the SLT ATB1 thermocouple on the suction line with
Velcro strap between the evaporator and compressor, no closer
than 6 inches to compressor.
Subcooling: Hand tighten high side hose to liquid line service
port. Attach the LLT ATB1 thermocouple on the liquid line with
Velcro strap between the condenser and expansion valve (TXV), as
close to the service port as possible.
4 After turning the system on or making any adjustments to
the system wait 15 minutes before charging by superheat or
subcooling to ensure the system is stabilized.
5 To add or remove refrigerant connect a refrigerant or recovery
tank to the center port on SMAN320. Follow charging or recovery
practices from manufacturer. Use the low side and high side
valves on SMAN320 to charge or recover refrigerant as needed. Let
system stabilize again for 15 minutes.
Note: When superheat and/or subcooling cannot be calculated an
"OL" or "-OL" will be displayed. Please check the following:
1 The correct refrigerant is selected on the SMAN.
2 The pipe thermocouples are plugged into SLT/LLT ports and are in
good working condition.
3 The pipe thermocouples are attached in the appropriate location on
the system. See step 3 above for details.
Target Superheat
Target Superheat is useful for charging fixed orifice air conditioning
systems. Your SMAN will calculate the target superheat for you. Just
manually input the IDWB (indoor wet bulb) and ODDB (outdoor dry
bulb) temperatures into the SMAN.
Input IDWB and ODDB manually
1 Press Target SH button to enter Target SH mode. IDWB will begin
blinking indicating it is ready for an input.
2 Press UP or DOWN ARROW to toggle between IDWB or ODDB
input. Hold ENTER to select which temperature you want to input
first, either IDWB or ODDB. The far left digit of IDWB or ODDB will
begin blinking indicating manual input mode is ready.
3 Press the UP or DOWN ARROW to change values and press ENTER
to lock in each digit. Once the last digit for ODDB or IDWB is locked
in, the calculated target superheat will show in the center column
of the display. A solid HOLD will display to the left of the TSH
calculation indicating a static target superheat calculation.
Note: If the inputted temperature is out of the calculable range for
IDWB or ODDB an "Err" will flash once and a double beep will
sound. IDWB range (40°F to 125°F, 4.4°C to 51.7°C) and ODDB
range (50°F to 140°F, 10°C to 60°C). Re-input a temperature
within these ranges to calculate target superheat.
Changing Units
Your SMAN can display pressure and temperature measurements in
English, Metric or combination of both units.
1 Press UNITS to enter unit selection screen.
2 Use ARROW to select your desired pressure units. Press ENTER.
3 Use ARROW to select your desired temperature units. Press ENTER
to return to pressure units.
4 Press UNITS to return to normal SMAN display.
Specifications
Display size: 5 inches (diagonal)
Backlight: Blue (On for 3 minute unless turned off manually)
Mini-USB Port: For updating to latest version of firmware.
Battery: 6 x AA (Battery life below based on alkaline type)
Battery life: 350 hours (without backlight)
Low battery indication: is displayed when the battery
voltage drops below the operating level
Auto Shut off: 30 minutes of inactivity when APO is activated
Operating environment: 32°F to 122°F (0°C to 50°C) at <75%
relative humidity
Storage temperature: -4°F to 140°F (-20°C to 60°C), 0 to 80% RH
(with battery removed)
Temperature coefficient: 0.1 x (specified accuracy) per °C (0°C to
18°C, 28°C to 50°C), per 0.6°F (32°F to 64°F, 82°F to 122°F)
Over range: "OL" or "-OL" is displayed
Weight: 3.04 lbs (1.38 kg)
Pressure
Connector Type: Standard 1/4" NPT male flare fitting
Range: 29” HgV to 580 Psig (English), 74 cmHgV to 0 to 4000KPa
(Metric)
Resolution: 0.1 psi/inHg; 1 kPa/cmHg
Accuracy: 29” HgV to 0” HgV: ±0.2” HgV
74 cmHgV to 0 cmHgV: ±1 cmHgV
0 to 200 Psig: ±1 Psi; 0 to 1378 KPa: ±7 KPa; 0 to 1.378MPa:
±0.007MPa; 0 to 13.78 bar ±0.07 bar
200 to 580 Psig: ±(0.3% of reading+1 Psig); 1378 to 4000KPa: ±(0.3% of
reading+7 Kpa); 1.378 to 4.000MPa: ±(0.3% of reading+0.007MPa);
13.78 to 40.00bar: ±(0.3% of reading +0.07bar)
Maximum overload pressure: 800 psig
Units: Psig, kPa, MPa, bar, inHg, and cmHg
Temperature
Sensor type: Type K thermocouple
Range: -95°F to 999.9°F (-70°C to 537.0°C)
Resolution: 0.1°F/°C
Accuracy: ±(1.0°F) -95°F to 199.9°F; ±(0.5°C) -70°C to 93°C
±(2.0°F) 200°F to 999.9°F; ±(1.0°C) 93°C to 537.0°C
Note: All accuracies are after a field calibration.
Maintenance
Clean the exterior with a dry cloth. Do not
use liquid.
Battery Replacement
The battery must be replaced when the
battery life indicator is empty. SMAN will
display "lo batt" and power off. Remove rear
battery cover and replace with 6 AA batteries.
Auto Power Off (APO)
To conserve battery life, your SMAN will
power down after 30 minutes of inactivity. APO
is activated by default and APO displays above
the battery icon. To deactivate, press and hold
ENTER while powering on the SMAN. When
deactivated, APO will no longer show above
the battery icon.
LOW HIGH
Pressure (bar)
Pressure (pounds/in 2 )
Pressure (kilopascals or Megapascals)
Negative Pressure (inches of mercury)
Negative Pressure (cm of mercury)
Suction Line Temperature
Liquid Line Temperature
Vapor Saturation Temperature
Liquid Saturation Temperature
Superheat
Subcooling
Target Superheat
Static Target Superheat Calculation
Outdoor Dry Bulb
Indoor Wet Bulb
Battery Life
Auto Power Off Enabled
Selected Refrigerant of System
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12
1 1
2 2
3 4
5
8 9
10
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LOW HIGH