Opman SSX34 v14.qxd - Fieldpiece Instruments
Contents
1. 22 1 250 28 0 3 ea a es sal anal anal zr9 i 81 114 4 14 4 17 2 197 22 8 25 9 29 0 C es esia IEEE int 8 41 11 7 147 17 4 205 23 8 27 of 20 a i CELE Git 8 71 12 015 0 18 3 21 7 25 oe a el ee ETERS st 92 125 16 1 196 a LL IAT e23ht0 0 13 9 47 5 21 1124 i p EDEL atti 7 154 19 Ci ECE a a EE T E ees E 73 z w w w co an wo wN w w w wi aw Nh w on So co w w wo o N oO D amp amp E gt e 99 6 S O j ao MN ab Q3 ow w w w on Oo MIN Mh o gt NI co an aja N Ld N Ww oO N O 0 9 O N 0 Ww Q Q A Ww co NM oO w w _ co Nm Mh N nN nN mir N wo on N ez gt lan M do o o SIES MN a N N oO NM rm rh o N wlo Condenser Air Dry Bulb Entering Temperature C A A A ad te b _ QJ o A w N pery J oo on N o N on _ eee 8 3 hr 7 16 1206 25 1 TT aah t0 8 15 5 19 9 24 4 EE 54 9 9 14 5 19 1 23 8 Pot 9 0 13 7 18 4 23 2 oo 66 68 70 72 74 76 78 I 80 82 84 esj ss 90 92 i 94 96 98 100 102 104 106 108 mop 112 aaj Condenser Air Dry Bulb Entering Temperature F Target Superheat C Return Air Wey Bulb Temperature __ 10 0 11 1 12 2 13 3 14 4 15 6 16 7 17 8 18 9 20 0 21 1 22 2 23 3 24 4 113 3 4 8 62. 0 to 200 Psi 1 Psi 0 to 1378 KPa 7 KPa 200 to 500 Psi 0 3 1 Psi 1378 to 3447KPa 0 3 7 KPa Maximum overload pressure 800PSIG A WARNINGS Never take pressure readings exceeding 500Psi 3500kPa or serious injury or damage to the meter may occur button while turning on the SSX34 4 Hand tighten 1 4 flare to suction line or liquid line as close to the evaporator or condenser as possible using an EPA approved service hose not included 5 Select proper pressure units english psi or met ric KPa by pressing the UNIT button 6 Select refrigerant R22 R410A R134A or R404A by pressing the TYPE button and observing the arrow at the bottom of the LCD 7 Connect the pipe clamp to the suction super heat or liquid Subcooling line at least six inch es from the compressor and slide it under the insulation for best accuracy isolating the pipe clamp from the ambient air 8 Select temperature to display Superheat sub cooling or refrigerant temperature Temperature being displayed is designated by the arrows along the right side of the LCD K is the direct temperature from the thermocouple actual refrigerant temperature SH is super heat and SC is subcooling Pressure is con stantly displayed in lower right 9 You must wait until the system you are testing has stabilized 10 Once you have the superheat or subcooling reading follow the manufacturer of the air condi tioner s spe
3. 2 7 8 9 3 10 9 12 6 14 3 16 0 17 7 19 2 20 7 22 1 23 4 24 8 14 4 4 4 5 9 7 4 9 0 10 5 12 1 13 8 15 4 17 4 18 6 20 1 21 5 22 9 24 3 15 6 3 9 5 4 7 0 8 5 10 4 11 7 13 2 14 8 16 4 18 0 19 5 21 0 22 4 23 8 16 7 3 3 4 9 6 5 8 0 9 6 11 1 12 7 14 2 15 8 17 4 18 9 20 4 21 9 23 3 17 8 4 2 5 9 7 5 9 0 10 6 12 1 13 5 15 2 16 8 18 4 19 9 21 4 22 9 18 9 3 5 5 2 6 8 8 4 10 0 11 5 12 9 14 5 16 2 17 8 19 4 20 9 22 4 20 0 __ 4 4 61 7 8 9 4 10 9 12 3 13 9 15 6 17 2 18 8 20 4 22 0 214 3 6 5 4 7 4 8 7 10 2 11 6 13 3 15 0 16 7 18 3 19 9 21 5 22 2 45 6 3 8 0 9 5 11 0 12 6 14 4 16 1 17 8 19 4 21 1 23 3 36 55 7 3 8 9 10 3 12 0 13 8 15 5 17 3 19 0 20 6 244 46 65 8 2 9 6 11 4 13 2 15 0 16 7 18 5 20 2 E ee See 48 67 8 3 10 2 12 0 13 9 15 7 17 5 19 3 a ECCI IIIT TAIT 3 0 5 1 69 8 9 10 9 12 8 14 7 16 6 18 5 4 3 63 8 3 10 3 12 3 14 2 16 2 18 1 Py 35 5 6 7 7 9 7 11 7 13 7 15 7 17 7 Pt 49 7 4 9 4 41 2 13 2 18 3 17 3 Py 42 65 8 6 10 7 12 7 14 8 16 9 34 59 8 0 10 1 12 3 14 4 16 5 Po 53 74 9 6 11 8 13 9 16 1 pot 47 6 9 9 1 11 3 13 5 15 7 Po 4 63 8 6 10 8 13 1 15 4 tT 3s 5 7 8 0 10 4 12 7 15 0 2 9 52 7 5 9 9 12 3 14 6 E 4 7 0 9 4 11 8 14 3 41 6 5 9 0 11 4 13 9 pt Tt 5 6 o 8 5 11 0 13 6 tT 30 55 8 1 10 6 13 2 oT 5 0
4. 7 6 10 2 12 9 Nm Mm D MININ COIN D wfo j Q s Ww Ww or wo oe wo w gt w J co pa N N Subcoolin Checking Superheat Using the SSX34 SSX34 These charts are an example of a generic superheat charts for a typical fixed orifice split residential system These charts should not be used for charging A typical manufacturer s recommended sub cooling is 12 F 7 C These are only exam ples of what the manufacturer s may rec ommend Heed all manufacturer s indica tions instructions and warnings above those in this manual The indoor wet bulb measurement can be accomplished by a Fieldpiece ARH4 or ATWB1 and should be taken as close to the evaporator coil inlet as possible The out door dry bulb reading can be taken with an ARH4 ATB1 ATA1 or any other Fieldpiece air thermocouple and should be taken as close to the condenser air inlet as possible v14
5. Fieldpiece Superheat and Subcooling Meter For A C and Refrigeration with Pipe Clamp Model SSX34 WAA Fieldpi ce LA NLA OPERATOR S MANUAL General Operating environment 32 F 0 C to 122 F 50 C lt 75 RH Storage environment 4 F 20 C to 140 F 60 F lt 80 RH with battery removed from meter Overrange OL or OL is displayed Auto off power 15 minutes Temperature coefficient 0 05 x specified accu racy per C Accuracy Stated accuracy at 23 C 5 73 F 9 F lt 90 R H Battery Single standard 9 volt battery NEDA 1604 JIS 006P IEC 6F22 Low battery symbol is displayed Temperature Temperature Input Standard K type thermocou ple connectors Measurement range 40 to 400 F 40 to 204 C 180 F 82 C max with supplied ATC1 pipe clamp thermocouple Resolution 0 1 System accuracy after field calibration 1 0 F 40 to 200 F with field calibration 0 5 C 40 to 93 C with field calibration 2 0 F 200 to 400 F with field calibration 1 0 C 93 to 204 C with field calibration Description The SSX34 is a portable standalone superheat and subcooling meter for A C and refrigeration The SSX34 is designed to fit the needs of the HVACR technician with a rugged rubber boot for durability and magnetic hanger for easy use Hang the mag netic hanger over a corner to minimize slip Plug in the pipe clamp thermocouple into the K Type ther mocouple
6. alled the superheat Under worst case conditions low load for fixed orifice systems the refrigerant in the evap orator boils off near the end of the evaporator coil To make sure liquid doesn t enter the compressor under the worst case condition low load the refrig erator 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 work ing properly and the actual superheat is too high add refrigerant If it s too low remove refrigerant Subcooling is the difference between the boiling point of the refrigerant in the condenser and the actual temperature of the refrigerant as it leaves the condenser The degrees that the refrigerant cools down below the boiling point is the sub cooling Under worst case scenario low load for TXV the subcooling will continue to rise If the subcooling rises to high liquid may be backed into the compressor causing damage and catastrophic failure On TXV systems subcooling is the best indica tion of the state of charge in the refrigerant system since these systems are designed to maintain con stant superheat Properly charging a system ensures maximum efficiency and longer equipment life The hose must have a schraeder valve depress er on one end to release
7. cifications to properly charge or diagnose the system Field Calibration Battery Check Function The SSX34 allows the user to check the battery charge at any time during use simpily by hold ing down the UNIT button for over one second The approximate percentage of battery charge will be displayed on the main display for three seconds before returning to its reading prior to preforming the battery check Unit Fluctuations Near Zero When the pressure vacuum is near zero the unit shown on the display may fluctuate between vacu um and pressure This is similar to a classical gauge face as shown Below zero is vacuum inHg or cmHG above 0 is pressure psi or kPa There is nothing wrong if this happens The appropriate units will be displayed when a pressure vacuum measurement is taken Temperature To calibrate the SSX34 temperature adjust the pot on the front of the meter labeled Temp 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 bet ter are easily obtained 1 Stabilize a large cup of ice water Pure distilled water will be the most accurate 2 Using the Type button scroll through tempera ture displayed until you reach the K spot which is the direct temperature input from the K type thermocouple 3 Immerse the temp probe in ice water and let it stabilize Pressure To calibrate the SSX34 pres
8. plug You can connect the SSX34 direct ly to the A C or refrigeration system using a stan dard 1 4 EPA approved refrigerant hose using the pressure port at the top of the meter You can even use the T included to charge the unit while check ing superheat or subcooling making it possible to charge to superheat or subcooling The SSX34 will display superheat or subcooling for R 22 R 410A R 134A and R 404A The pipe clamp will take the temperature reading of the refrigerant piping giving the actual refrigerant temperature The refrigerant hose will then sense the refrigerant pressure The SSX34 then uses the actual temperature and boiling point at the sensed pressure to calculate and display real time actual subcooling or superheat as well as display refriger ant temperature and pressure Operation 1 Connect the thermocouple pipe clamp and refrigerant hose to the meter 2 Calibrate if needed see Field calibration 3 Select C or F by holding down the C or F Pressure Pressure Input Standard 1 4 male flare fitting Measurement range 29 HgV to 500PSIG english 74 cmHgV to 0 to 4000KPa metric HgV indicates a vacuum measurement in either inches english or cm metric of mercury A perfect vacuum would be 29 92 HgV or 76 00cmHgV Atmospheric pressure at sea level would be 0 HgV and 0 cmHgV System accuracy after field calibration 29 HgV to 0 HgV 0 2 HgV 74 cmHgV to 0 cmHgV 0 4 cmHgV
9. sure ensure that the SSX34 is disconnected from the pressure source and at equilibrium with the ambient pres sure Press the ATM button and the SSX34 will set the zero point of pressure to the ambient pressure Service Return any defective SSX34 to Fieldpiece for warranty service along with proof of purchase Contact Fieldpiece for out of warranty repair charges Warranty The product is warranted to the original purchas er against defects in material or workmanship for a period of one 1 year from the date of purchase During the warranty period Fieldpiece Instruments will at its option replace or repair the defective unit This warranty does not apply to defects resulting from abuse neglect accident unauthorized repair alteration or unreasonable use of the instrument Any implied warranty arising out of the sale of Fieldpiece s products including but not limited to implied warranties of merchantability and fitness for purpose are limited to the above Fieldpiece shall not be liable for incidental or consequential dam ages Fielapiece Designed in USA MADE IN TAIWAN Measuring Actual Superheat and Subcooling Superheat is the difference between the actual temperature of the refrigerant gas as it leaves the evaporator and the boiling point temperature of the refrigerant in the evaporator coil After boiling the refrigerant continues to warm up The number of degrees it warmed up after boiling is c
10. the refrigerant from the suction or liquid line This is the same type of hose available with most pressure gauge sets We sug gest EPA sanctioned no leak hoses Exercise caution whenever working with any electricity and high pressure liquid or gas Follow all instructions provided with equipment being serviced or installed Target Superheat and Subcooling Heed all equipment manufacturer s specifica tions warnings and suggestions above anything found in this manual To determine the target superheat fixed orifice system or subcooling charts vary dramatically from one system to another you need the manu facturers target superheat chart or subcooling chart You can use the ARH4 Fieldpiece accessory head for both wet bulb dew point and dry bulb measurements Checking Subcooling Using the Throttle Valve TXV Cap Tube Fixed Orifice Compressor Generic Target Superheat Charts Target Superheat F Return Air Wey Bulb Temperature yo E E S E C E C E E E re ral 7 56 6 11 2 14 0 168 19 7 22 7 25 7 28 9 31 8 34 6 37 2 39 7 42 2 44 s 7al 108 teal tea tool aval 248 27 a 307135 5 e0 7 0 98 126 15 4 182 21 0 238l 26 6 29 5 32 4 s2 ssl ea 11 7 148173 ano aaa 288 284 313 64 76 10 6 13 5 16 3 19 0 21 7 24 4 27 3 30 2 EERE OEUEP EERE al 7 9 11 1 14 0 16 8 19 5
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