SMAN320 - 3-Port Digital Manifold
Contents
1. Fieldpiece Designed in USA MADE IN TAIWAN www fieldpiece com Fieldpiece Instruments Inc 2014 v052. R500 R502 R503 R507A R508B Suva95 Using Different Refrigerants You can use your manifold with different refrigerants Be sure to purge your manifold and hoses before connecting to a system with a different refrigerant Firmware Updates Your SMAN320 firmware can be updated in the field to ensure you always have the most up to date features for your manifold Just go to www fieldpiece com to periodically check for the latest firmware version If a newer version is available follow the download link and installation instructions on the website Connect your SMAN320 to the PC via a mini USB to USB cable not included to install the update on your SMAN To check your current firmware version power off your SMAN320 Press and hold the blue power button for about 6 seconds The SMAN320 firmware version will show in the top right corner of the display X XX Your SMAN checks with its built in P T charts to compare the temperature of the refrigerant in the tank to the vapor saturation temperature based on the refrigerant you selected If the measured pressures on your SMAN are within 3psi of the P T chart pressure corresponding to the vapor saturation temperature the SMAN will adjust the pressure sensor linearity to match the P T chart Possible causes of failed Err pressure calibration 1 Refrigerant tank was not stored in stable ambient conditions for at least 24 hours 2 Thermocouple attached to refrigerant tank was not prope
3. evaporator coil To make sure liquid doesn t enter the compressor under the worst case condition low load the refrigerator or A C manufacturers publish charts indicating what the superheat should be at a given indoor wet bulb measurement and outdoor air temperature Measuring superheat is your best indication on a fixed orifice system of the proper refrigerant charge and operating conditions If everything else is working properly and the actual superheat is too high add refrigerant If it s too low evacuate refrigerant Subcooling is the difference between the boiling point of the refrigerant in the condenser and the actual temperature of the refrigerant Calibration Temperature To calibrate your SMAN temperature thermocouples adjust the pot on the front of the meter labeled SLT Cal or LLT Cal The best way to calibrate is to match to a known temperature Ice water is very close to 32 F and is readily available Accuracies of one degree or better are easily obtained 1 Stabilize a large cup of ice water by stirring Pure distilled water will be the most accurate 2 Immerse the temp probe in ice water from SLT and adjust the SLT Cal pot with a flathead screwdriver and let it stabilize keep stirring 3 Repeat Step 3 for temp probe in LLT Pressure Zeroing To calibrate your SMAN320 pressure sensors to atmospheric pressure ensure that your SMAN320 is disconnected from any pressure source and at equilibrium with the a
4. Fielapiece Digital Manifold OPERATOR S MANUAL Model SMAN320 AAAs 9909 ARA p r ahhg ii 2 g por a ES matata ABBR Controls SLT LLT 1 Oe ry ee T 78 l CAL o gt 2 O gt Fieldpiece lt Air gph WE Pressure p 7 N Insert Type K thermocouple plugs here Temperature calibration pots Press to zero atmospheric pressure Press to calibrate to refrigerant tank See Advanced Pressure Calibration section Press to confirm selection Press hold to cycle through refrigerants Press to enter Target Superheat mode 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 A WwW ho COM HD MN Quick Start 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 N22675 CE CE RoHS Compliant 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 re
5. TER 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 H Halt L APO iii HOLD ply 5 cl TSH B uci ARAA Par ur f Ja l Til LLT L CICI bar Pressure bar Psig Pressure pounds in MkPa Pressure kilopascals or Megapascals inHg Negative Pressure inches of mercury emHg Negative Pressure cm of mercury SLT Suction Line Temperature LLT Liquid Line Temperature VSAT Vapor Saturation Temperature LSAT Liquid Saturation Temperature Specifications Display size 5 inches diagonal Backlight Blue On for 3 minute unless tur
6. b iwe Indoor Wet Bulb IT Battery Life aro Auto Power Off Enabled R Selected Refrigerant of System 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 jis 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 What is Superheat and Subcooling Why Do I Need to Measure It Superheat is the difference between the actual temperature of the refrigerant gas as it leaves the evaporator and the boiling point of the refrigerant After boiling the refrigerant continues to heat up The number of degrees it heats up after boiling is called the superheat Under worst case conditions low load for fixed orifice systems the refrigerant in the evaporator boils off near the end of the
7. frigerant 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 Description Your SMAN320 is a handy two val
8. mbient pressure 1 Press the CAL Atmospheric Pressure button and your SMAN320 will set the zero point of pressure to the ambient pressure as it leaves the condenser The degrees that the refrigerant cools down below the boiling point is the subcooling Under worst case scenario low load for TXV the subcooling will continue to rise If the subcooling rises too high liquid may be backed into the compressor causing damage and catastrophic failure See www fieldpiece com for more technical articles Evaporator Low Side Direction of Refrigerant Flow High Side o Condenser Location of Subcooling Test Location of Superheat Test Advanced Pressure Calibration Your SMAN320 has the ability to perform a linear adjustment of the pressure sensors based on refrigerant type temperature and pressure Calibration setup For best results first perform both the Temperature and Pressure Zeroing procedures See Calibration section for details This will ensure pressure readings are zeroed and thermocouple is properly calibrated to the SLT port of the SMAN Calibration to LLT port is not necessary for this calibration The refrigerant cylinder should be stored in a stable ambient environment for at least 24 hours before calibration 1 Plug ina Type K thermocouple into SLT A bead type thermocouple like the ATB1 is recommended 2 Connect the SMAN320 to a refrigerant cylinder of a known single refrigerant using a
9. mited to implied warranties of merchantability and fitness for a particular purpose are limited to the above Fieldpiece shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss or for any claim of such damage expenses or economic loss State laws vary The above limitations or exclusions may not apply to you Pipe Clamp Thermocouple Model ATC1 Measure suction line and liquid line pipe temperatures quickly and easily Using a pipe clamp thermocouple makes it easy to check the superheat and or subcooling of the system to verify proper charge EXAMPLE OF PROPER PLACEMENT OF FIELDPIECE ATC1 PIPE CLAMP THERMOCOUPLE ON HORIZONTAL REFRIGERANT PIPE Obtaining Service Email Fieldpiece warranty department at fpwarranty fieldpiece com for current fixed price repair service Send check or money order made out to Fieldpiece Instruments for the amount quoted If your meter is under warranty there will be no cost for the repair replacement Send your meter freight prepaid to Fieldpiece Instruments Send proof of date and location of purchase for in warranty service The meter will be repaired or replaced at the option of Fieldpiece and returned via least cost transportation For international customers warranty for products purchased outside of the U S should be handled through local distributors Visit our website to find your local distributor
10. n EPA approved service hose Be sure to open both HIGH and LOW side valves on your manifold and cap the unused ports If caps are not available you can connect both ends of a refrigerant hose to the two unused caps Note Some refrigerant will remain in the hoses which will need to be recovered 3 Press the REFRIGERANT button to match the refrigerant of the cylinder you are using 4 Attach bead type thermocouple to the side of the cylinder using tape It is recommended to attach in the middle of the cylinder Important Let the temperature of the thermocouple stabilize to the refrigerant temperature for 1 to 2 minutes or until stable 5 Open the refrigerant cylinder The pressure inside cylinder should now be displayed on both HIGH and LOW side pressure sensors 6 Press the CAL Test Pressure button If successful Good will display for 3 seconds If failed Err will display for same time Refrigerants The P T charts of the following 45 refrigerants come pre programmed into your SMAN In your SMAN the refrigerants are listed in order of most commonly used Here they are listed in numerical order for easy reference R11 R113 R114 R12 R123 R1234YF R124 R125 R13 R134A R22 R23 R32 R401A MP39 R401B R402A R402B R404A R406A R407A R407C R407F R408A R409A R410A R414B Hotshot R416A R417A R417C HOT SHOT 2 R420A R421A R421B R422A R422B NU228B R422C Oneshot R422D R424A R427A R434A RS 45 R438A MO099
11. ned 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 q _ 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 lt 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 Ibs 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 SH Superheat sc Subcooling TSH Target Superheat HOLD Static Target Superheat Calculation ooe Outdoor Dry Bul
12. rly calibrated to SLT port of SMAN 3 Thermocouple was plugged into wrong port LLT instead of SLT 4 Incorrect refrigerant was selected on the SMAN A WARNINGS DO NOT APPLY MORE THAN 800 PSI TO ANY PORT ON THE MANIFOLD FOLLOW ALL EQUIPMENT MANUFACTURER S TESTING PROCEDURES ABOVE THOSE IN THIS MANUAL IN REGARDS TO PROPERLY SERVICING THEIR EQUIPMENT Hose To Pump Recommended Accessories Easy View Micron Gauge Model SVG3 Measure the depth of the vacuum in microns of mercury to verify all moisture and non condensibles have been removed from the system For the most accurate reading connect directly to a service port on the system or to a Schrader core removal tool illustrated below Schrader Core Directly to Removal Tool Service Port Limited Warranty This meter is warranted against defects in material or workmanship for one year from date of purchase from an authorized Fieldpiece dealer Fieldpiece will replace or repair the defective unit at its option subject to verification of the defect This warranty does not apply to defects resulting from abuse neglect accident unauthorized repair alteration or unreasonable use of the instrument Any implied warranties arising from the sale of a Fieldpiece product including but not li
13. ve 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 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 EN
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