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18-AC108D1-1D-EN

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

Table 5.1

RATED

LINE SIZES

Line Sizes

Service Valve Connection Sizes

Max Line & Lift Lengths

Vapor

Line

Liquid

Line

Vapor Line

Connection

Liquid Line

Connection

TOTAL Max

Line Length (ft.)

Max Lift (ft.)

4TTA4036A3/4

3/4

3/8

3/4

3/8

150

4TTA4042A3/4

3/4

3/8

3/4

3/8

150

4TTA4048A3/4

7/8

3/8

7/8

3/8

150

4TTA4060A3/4

7/8

3/8

7/8

3/8

150

Note:

For other line lengths, Refer to Refrigerant Piping Application Guide, SS-APG006-EN or Refrigerant Piping

Software Program, 32-3312-xx (latest revision).

Содержание 4TTA4

Страница 1: ...acture s split systems are AHRI rated only with TXV EEV indoor systems Some of the benefits of installing approved matched indoor and out door split systems are maximum efficiency optimum performance...

Страница 2: ...replacement For specific handling concerns with R 410A and POE oil reference Retrofit Bulletins SS APG006 EN and APP APG011 EN or APP APG012 EN Extreme caution should be exercised when opening the Liq...

Страница 3: ...ht Models H x D x W in Weight lb 4TTA4036A3 4 33 x 30 x 33 156 4TTA4042A3 4 29 x 34 x 37 184 4TTA4048A3 4 29 x 34 x 37 189 4TTA4060A3 4 37 x 34 x 37 211 Weight values are estimated 1 The maximum TOTAL...

Страница 4: ...areas where snow accumulation and prolonged below freezing temperatures occur Units should be elevated 3 12 inches above the pad or roof top depending on local weather This additional height will all...

Страница 5: ...pad such as a concrete slab consider the following The pad should be at least 1 larger than the unit on all sides The pad must be separate from any structure The pad must be level The pad should be h...

Страница 6: ...hs Vapor Line Liquid Line Vapor Line Connection Liquid Line Connection TOTAL Max Line Length ft Max Lift ft 4TTA4036A3 4 3 4 3 8 3 4 3 8 150 50 4TTA4042A3 4 3 4 3 8 3 4 3 8 150 50 4TTA4048A3 4 7 8 3 8...

Страница 7: ...lation Determine required line length and lift You will need this later in STEP 2 of Section 14 Total Line Length __________ Ft Total Vertical Change lift __________ Ft The outdoor condensing units ar...

Страница 8: ...from the refrigerant lines For Example When the refrigerant lines have to be fastened to floor joists or other framing in a structure use isolation type hangers Isolation hangers should also be used w...

Страница 9: ...e or other appropriate method every 8 ft 8 Feet Maximum Isolation Through Wall DO NOT hang line sets from ductwork Sealant Insulation Vapor Line Wall Ductwork Isolator Line Set Section 7 Refrigerant L...

Страница 10: ...orrect direction of refrigeration flow away from outdoor unit and toward evapo rator coil as illustrated Braze the filter drier to the Liquid Line Continue the dry nitrogen purge Do not remove the wet...

Страница 11: ...P 2 Check for leaks by using a soapy solu tion or bubbles at each brazed location Remove nitrogen pressure and repair any leaks before continuing Section 8 Refrigerant Line Leak Check 8 1 Check For Le...

Страница 12: ...ete blank off the vacuum pump and micron gauge and close the valves on the manifold gauge set 1 MIN Section 10 Service Valves 10 1 Open the Gas Service Valve 0350 Microns ON OFF CAP 1 4 TURN ONLY COUN...

Страница 13: ...lve System Service Port 3 16 Hex Wrench Unit Side of Service Valve Extreme caution should be exercised when opening the Liquid Line Service Valve Turn counterclockwise until the valve stem just touche...

Страница 14: ...s Cap all unused wires In AC systems for multiple stages of electric heat jumper W1 and W2 together if comfort control has only one stage of heat TEM3 4 Bypass air handler and connect Y from comfort c...

Страница 15: ...ion testing servicing and troubleshooting of this product it may be nec essary to work with live electrical components Failure to follow all electrical safety precau tions when exposed to live electri...

Страница 16: ...s to apply power to the indoor and outdoor units STEP 5 Set system thermostat to ON OFF DONE CANCEL ON OFF STEP 4 Wait one 1 hour before starting the unit if compressor crankcase heater acces sory is...

Страница 17: ...ient tempera ture is above 55 F For best results the indoor temperature should be kept between 70 F to 80 F STEP 1 Use the refrigerant line total length and lift measurements from Section 5 3 Total Li...

Страница 18: ...ABLE FOR LINE LENGTH AND RISE Add 4 TOTAL REFRIGERANT LINE LENGTH FT includes lift Add 2 Add 1 Add 1 5 Ton AC 50 1 40 1 30 25 Use Design Subcooling 15 10 0 1 20 30 40 50 60 70 80 90 100 110 120 130 14...

Страница 19: ...essure should be ap proximately 327 PSIG This is the shown as the intersection of the Final Subcooling column and the Liquid Temperature row Table 14 2 8 9 10 11 12 13 14 179 182 185 188 191 195 198 1...

Страница 20: ...arged 2 Remove gages 3 Replace service port caps to prevent leaks Tighten finger tight plus an ad ditional 1 6 turn PRESSURE CURVE SAMPLE Cooling 1450 SCFM Heating 1350 SCFM DISCHARGE PRESSURE PSIG OU...

Страница 21: ...ured Suction Line Temp __________ F Liquid Gage Pressure __________ PSIG Suction Gage Pressure __________ PSIG Calculating Charge Using the Weigh In Method 1 Measure in feet the distance between the o...

Страница 22: ...btained with the namplate charge plus additional charge previously added STEP 5 Return to site for adjustment Important Return in the spring or summer to accurately charge the system in the cooling mo...

Страница 23: ...is installation are the unit Operational and Checkout Procedures To obtain proper performance all units must be operated and charge adjustments made Important Perform a final unit inspection to be sur...

Страница 24: ...24 18 AC108D1 1D EN 3 5 4 Ton Units PRINTED FROM D158514P01 5 Ton Units PRINTED FROM D158515P01...

Страница 25: ...18 AC108D1 1D EN 25 Section 17 Wiring Diagrams 036A3 042A3 048A3 060A3 Models...

Страница 26: ...26 18 AC108D1 1D EN 036A3 042A3 048A3 060A3 Models...

Страница 27: ...18 AC108D1 1D EN 27 036A4 042A4 048A4 060A4 Models...

Страница 28: ...28 18 AC108D1 1D EN 036A4 042A4 048A4 060A4 Models...

Страница 29: ...QUID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 309 PSIG LIQUID PRESSURE SHOULD BE 10 PSI OF CHART...

Страница 30: ...THE OUTDOOR TEMP IS ABOVE 65 DEG F TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDOOR CFM ALLOW PRESSURES TO STABILIZE MEASURE INDOOR WET BULB TEMPERATURE OUTDOOR TEMPERATURE LIQUID AND SUCTION PRE...

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