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Trane 4TWR7, Руководство по установке

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22 

 18-BC90D1-4A-EN

STEP 3

 - Check the liquid line temperature and 

liquid gage pressure to obtain a minimum of 10º 
subcooling in heating mode.

Measured Liquid Line Temp = __________  º F

Liquid Gage Pressure = __________ PSIG

STEP 4

 - Add charge if a minimum of 10º 

subcooling is not obtained with the nameplate 
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 
mode with outdoor ambient 

above 55º F

.

20 MIN.

STEP 2 

- Stabilize the system by operating for a 

minimum of 20 minutes.

At startup, or whenever charge is removed or 
added, the system must be operated for a mini-
mum of 20 minutes to stabilize before accurate 
measurements can be made.

Содержание 4TWR7

Страница 1: ...zardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment o...

Страница 2: ...he Liquid Line Service Valve Turn counterclockwise until the valve stem just touches the rolled edge No torque is required Failure to follow this warning will result in abrupt release of system charge...

Страница 3: ...h of refrigerant lines from outdoor to indoor unit should NOT exceed 150 feet including lift 2 The maximum vertical change should not exceed 50 feet 3 Standard and alternate line sizes and service val...

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: ...7048A 7 8 3 8 7 8 3 8 150 50 4TWR7060A 1 1 8 3 8 7 8 3 8 80 25 ALTERNATE LINE SIZES Line Sizes Service Valve Connection Sizes Max Line Lift Lengths Vapor Line Liquid Line Vapor Line Connection Liquid...

Страница 7: ...mine 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 are factory ch...

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: ...ier check liquid line filter drier s directional flow arrow to confirm correct direction of refrigeration flow away from outdoor unit and toward evapo rator coil as illustrated Braze the filter drier...

Страница 11: ...2 Check for leaks by using a soapy solu tion or bubbles at each brazed location Remove nitrogren 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: ...e 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 touches...

Страница 14: ...er TAM7 DIP switches must be configured for HP 2 Stage 1 Compressor Note Refer to Indoor Unit Literature for proper configuration BK WH BLK BK WH BLK BK WH BLK BK WH BLK 11 3 Defrost Control Defrost c...

Страница 15: ...may be nec essary to work with live electrical components Failure to follow all electrical safety precau tions when exposed to live electrical compo nents could result in death or serious injury s WAR...

Страница 16: ...s 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 used and the Outdoor Ambient is below 70 F 60 M...

Страница 17: ...ent 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 Lin...

Страница 18: ...NG CHART CORRECTIONS TABLE FOR LINE LENGTH AND RISE Add 2 REFRIGERANT LINE LIFT FT 4 Ton Heat Pump 50 1 40 1 30 25 Use Design Subcooling 15 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 REFRIGE...

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: ...R TEMPERATURE Degree F SUCTION PRESSURE PSIG OUTDOOR TEMPERATURE Degree F COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDO...

Страница 21: ...eating Only Measured Suction Line Temp __________ F Liquid Gage Pressure __________ PSIG Suction Gage Pressure __________ PSIG Calculating Charge Using the Weigh In Method 1 Measure in feet the distan...

Страница 22: ...tained with the nameplate 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: ...gainst the following list Final phases of this installation are the unit Operational and Checkout Procedures To obtain proper performance all units must be operated and charge adjustments made Importa...

Страница 24: ...A C T O R C O I L L O W V O L T A G E F U S E S T U C K C O M P R E S S O R I N E F F I C I E N T C O M P R E F U N D E R C H A R G E R E F O V E R C H A R G E E X C E S S I V E E V A P L O A D N O N...

Страница 25: ...AHRI Certified mark indicates Trane U S Inc participation in the AHRI Certification program For verification of individual certified products go to ahridirectory org Trane has a policy of continuous d...

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