TRANE Technologies 4TTR5018 – 060 Condensing Units Instruction Manual

TRANE Technologies 4TTR5018 – 060 Condensing Units

Installation and Operation Manual

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work. Condensing Units
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.

Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. Some of the benefits of installing approved matched indoor and outdoor split systems are maximum efficiency, optimum performance and the best overall system reliability.

Section 1. Safety

WARNING

This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacture or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

WARNING

These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant cylinders are painted a “Rose” color to indicate the type of refrigerant and may contain a “dip” tube to allow for charging of liquid refrigerant into the system. All R-410A systems use a POE oil that readily absorbs moisture from the atmosphere. To limit this “hygroscopic” action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement. For specific handling concerns with R-410A and POE oil reference Retrofit Bulletins SS-APG006-EN and APP-APG011-

WARNING

UNIT CONTAINS R-410A REFRIGERANT!
R-410A operating pressures exceed the limit of R-22. Proper service equipment is required. Failure to use proper service tools may result in equipment damage or personal injury. SERVICE USE ONLY R-410A REFRIGERANT AND APPROVED POE COMPRESSOR OIL.

WARNING

Extreme caution should be exercised when opening the 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 and may result in personal injury and /or property damage.

WARNING

LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

WARNING

The appliance is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.

WARNING

Children should be supervised to ensure that they do not play with the appliance.

WARNING

If using existing refrigerant lines make certain that all joints are brazed, not soldered.

WARNING

Scroll compressor dome temperatures may be hot. Do not touch the top of compressor; it may cause minor to severe burning.

WARNING

This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Section 2. Unit Location Considerations

Unit Dimensions and Weight

When mounting the outdoor unit on a roof, be sure the roof will support the unit’s weight. Properly selected isolation is recommended to alleviate sound or vibration transmission to the building structure.

Refrigerant Piping Limits

1. The maximum TOTAL length 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. Service valve connection diameters are shown in Table 5.1.

Note: For other line lengths, Refer to Refrigerant Piping Application Guide, SS-APG006-EN or Refrigerant Piping Software Program, 32-3312-03 (or latest revision).

Suggested Locations for Best Reliability

Ensure the top discharge area is unrestricted for at least five (5) feet above the unit. Three (3) feet clearance must be provided in front of the control box (access panels) and any other side requiring service. Do not locate close to bedrooms as operational sounds may be objectionable.

Position the outdoor unit a minimum of 12” from any wall or surrounding shrubbery to ensure adequate airflow. Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water from pouring directly on the unit.

Coastal Considerations

If installed within one mile of salt water, including seacoasts and inland waterways, models without factory supplied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at installation time.

Section 3. Unit Preparation

Prepare The Unit For Installation

STEP 1 – Check for damage and report promptly to the carrier any damage found to the unit.

STEP 2 – To remove the unit from the pallet, remove tabs by cutting with a sharp tool.

Setting the Unit

Pad Installation

When installing the unit on a support 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 high enough above grade to allow for drainage.
• The pad location must comply with National, State, and Local codes.

Section 5. Refrigerant Line Considerations

Refrigerant Line and Service Valve Connection Sizes

Factory Charge

The outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, ten (10) feet of tested connecting line, and the smallest rated indoor evaporative coil match. Always verify proper system charge via subcooling (TXV/EEV) or superheat (fixed orifice) per the unit nameplate.

Required Refrigerant Line Length

Refrigerant Line Insulation

Important: The Vapor Line must always be insulated. DO NOT allow the Liquid Line and Vapor Line to come in direct (metal to metal) contact.

Reuse Existing Refrigerant Lines

CAUTION! If using existing refrigerant lines make certain that all joints are brazed, not soldered

For retrofit applications, where the existing indoor evaporator coil and/or refrigerant lines will be used, the following precautions should be taken:

• Ensure that the indoor evaporator coil and refrigerant lines are the correct size.
• Ensure that the refrigerant lines are free of leaks, acid, and oil.

Section 6. Refrigerant Line Routing

Precautions

Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.

Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements.

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 when refrigerant lines are run in stud spaces or enclosed ceilings.
• Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.
• Isolate the lines from all ductwork.
• Minimize the number of 90º turns.

Section 7. Refrigerant Line Brazing

Braze The Refrigerant Lines

STEP 1 – Remove caps or plugs. Use a deburing tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth.

STEP 2 – Remove the pressure tap cap and valve cores from both service valves.

STEP 3 – Purge the refrigerant lines and indoor coil with dry nitrogen.

STEP 4 – Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge.

Braze the refrigerant lines to the service valves. For units shipped with a field-installed external drier, check liquid line filter drier’s directional flow arrow to confirm correct direction of refrigeration flow (away from outdoor unit and toward evaporator coil) as illustrated. Braze the filter drier to the Liquid Line. Continue the dry nitrogen purge. Do not remove the wet rag until all brazing is completed.
Important: Remove the wet rag before stopping the dry nitrogen purge.

Note: Install drier in Liquid Line.

NOTE: Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to keep the flame directly off of the basepan.

STEP 5 – Replace the pressure tap valve cores after the service valves have cooled.

Section 8. Refrigerant Line Leak Check

Check For Leaks

STEP 1 – Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen.

STEP 2 – Check for leaks by using a soapy solution or bubbles at each brazed location. Remove nitrogren pressure and repair any leaks before continuing.

Section 9. Evacuation

Evacuate the Refrigerant Lines and Indoor Coil

Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete.

STEP 1 – Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.

STEP 2 – Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute. Once evacuation is complete blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set.

Section 10. Service Valves

Open the Gas Service Valve

Important: Leak check and evacuation must be completed before opening the service valves.

NOTE : Do not vent refrigerant gases into the atmosphere

STEP 1 – Remove valve stem cap.
STEP 2 – Using an adjustable wrench, turn valve stem 1/4 turn counterclockwise to the fully open position.
STEP 3 – Replace the valve stem cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

Open the Liquid Service Valve

WARNING

Extreme caution should be exercised when opening the 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 and may result in personal injury and /or property damage.

Important: Leak check and evacuation must be completed before opening the service valves.

STEP 1 – Remove service valve cap.
STEP 2 – Fully insert 3/16” hex wrench into the stem and back out counterclockwise until valve stem just touches the rolled edge (approximately five (5) turns.)
STEP 3 – Replace the valve cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

Electrical – Low Voltage

Low Voltage Maximum Wire Length

Table 11.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat.

Low Voltage Hook-up Diagrams

• Units with pigtails require wirenuts for connections. 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 control directly to OD unit* TEM6 Only** TEM6 only – When using a BK enabled comfort control, cut BK jumper and bypass Y1 and Y2 at the air handler. Connect BK from comfort control to BK of the air handler
• TAM4 only – Wire as shown, no BK is available
• TAM7 only – When using a BK enabled comfort control, cut BK jumper on the AFC and connect BK from comfort control to BK of the air handlerThermostatAir

With FurnaceWith Variable Speed Furnace

• Units with pigtails require wirenuts for connections. Cap all unused wires.
• In AC systems for multiple stages of heat, jumper W1 and W2 together if comfort control has only one stage of heat.* If equipped with second stage heat
• When using a BK enabled comfort control, cut BK jumper and bypass Y and YLo at the furnace. Connect BK from comfort control to BK of the furnace

2 Stage AC Thermostat

Electrical – High Voltage

High Voltage Power Supply

warning

LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

The high voltage power supply must agree with the equipment nameplate. Power wiring must comply with national, state, and local codes. Follow instructions on unit wiring diagram located on the inside of the control box cover and in the Service Facts document included with the unit.

High Voltage Disconnect Switch

Install a separate disconnect switch at the outdoor unit. For high voltage connections, flexible electrical conduit is recommended whenever vibration transmission may create a noise problem within the structure.

High Voltage Ground

Ground the outdoor unit per national, state, and local code requirements.

Section 13. Start Up

System Start Up

STEP 1 – Ensure Sections 7 through 12 have been completed.

STEP 2 – Set System Thermostat to OFF

STEP 3 – Turn on disconnect(s) to apply power to the indoor and outdoor units.

STEP 4 – Wait one (1) hour before starting the unit if compressor crankcase heater accessory is used and the Outdoor Ambient is below 70ºF.

STEP 5 – Set system thermostat to ON.

Section 14. System Charge Adjustment

Temperature Measurements (Systems can be rated with TXV, EEV or Piston. Ensure charging method is correct).

STEP 1 – Check the outdoor temperatures.

Subcooling (in cooling mode) is the only recommended* method of charging above 55º F ambient outdoor temperature.

Note: For Superheat (In Cooling Mode), refer to the Superheat Charging Table on pg 18.

*Weigh-In Method can be used for initial installation, or system replacement when power is not available or when the desired temperatures for the standard charging method are outside normal bounds. See Section 14.3. For best results the indoor temperature should be kept between 70º F to 80º F.

Note: It is important to return in the spring or summer to accurately charge the system in the cooling mode when outdoor ambient temperature is above 55º F.

Subcooling Charging in Cooling (Above 55º F Outdoor Temp.)

STEP 1 – Use the refrigerant line total length and lift measurements from Section 5.3.
Total Line Length = __ Ft.
Vertical Change (Lift) = __ Ft.

STEP 2 – Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below.

Design Subcooling Value = __º F Subcooling Correction = __º F
(from nameplate or Service Facts)
Final Subcooling Value = __º F

STEP 3 – 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 minimum of 20 minutes to stabilize before accurate measurements can be made.

STEP 4 – Measure the liquid line temperature and pressure at the outdoor unit’s service valve.
Measured Liquid Line Temp = __ º F
Liquid Gage Pressure = __ PSI
Final Subcooling Value = __ º F

STEP 5 – Use the final subcooling value, refrigerant temperature and pressure from STEP 4, to determine the proper liquid gage pressure using Table 14.2.

Example: Assume a 12º F Final Subcooling value and liquid temp of 90º F .

1. Locate 12º F Final Subcooling in Table 14.2.
2. Locate the Liquid Temperarature (90º F) in the left column.
3. The Liquid Gage Pressure should be approximately 327 PSI. (This is the shown as the intersection of the Final Subcooling column and the Liquid Temperature row.

STEP 6 – Adjust refrigerant level to attain proper gage pressure.

Add refrigerant if the Liquid Gage Pressure is lower than the chart value.

1. Connect gages to refrigerant bottle and unit as illustrated.
2. Purge all hoses.
3. Open bottle.
4. Stop adding refrigerant when liquid line temperature and Liquid Gage Pressure matches the charging chart Final Subcooling value.

Recover refrigerant if the Liquid Gage Pressure is higher than the chart value.

STEP 7 – Stabilize the system.

1. Wait 20 minutes for the system condition to stabilize between adjustments.
   Note: When the Liquid Line Temperature and Gage Pressure approximately match the chart, the system is properly charged.

2. Remove gages.

3. Replace service port caps to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

STEP 8 – Verify typical performance.

Refer to System Pressure Curves at the end of the document to verify typical performance.

STEP 9 – Record System Information for reference

Record system pressures and temperatures after charging is complete.
Outdoor model number = _____
Measured Outdoor Ambient = __ º F
Measured Indoor Ambient = __ º F
Measured Liquid Line Temp = __ º F

Measured Suction Line Temp = __ º F
Liquid Gage Pressure = __ PSI
Suction Gage Pressure = __ PSI

Fixed Orifice Superheat Charging Table

Using a digital psychrometer, measure the return air wet-bulb temperature at the unit just before the coil. Also measure the outdoor dry-bulb temperature. Use these temperatures to locate the target superheat on the charging table. Do not attempt to charge the system if these conditions fall outside of this charging table. ADD refrigerant to DECREASE total superheat. REMOVE refrigerant to INCREASE total superheat. Always allow 10 to 15 minutes of operature after any refrigerant or air flow change prior to determining the final superheat.

Weigh-In Method for Charging

Weigh-In Method can be used for the initial installation, or anytime a system charge is being replaced. Weigh-In Method can also be used when power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the subcooling charging method.

Calculating Charge Using the Weigh-In Method

1. Line length (ft) ___
2. Charge multiplier x _0.6___
3. Step 1 x Step 2 = __
4. Refrigerant = __

STEP 1 – Measure in feet the distance between the outdoor unit and the indoor unit and record on Line 1. Include the entire length of the line from the service valve to the IDU.
STEP 2 – Enter the charge multiplier (0.6 oz/ft). Each linear foot of interconnecting tubing requires the addition of 0.6 oz of refrigerant.
STEP 3 – Multiply the total length of refrigerant tubing (Line 1) times the value on Step 2. Record the result on Line 3 of the Worksheet.
STEP 4 – This is the amount of refrigerant to weigh-in prior to opening the service valves.

Checkout Procedures

Operational And Checkout Procedures

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.
Important: Perform a final unit inspection to be sure that factory tubing has not shifted during shipment. Adjust tubing if necessary so tubes do not rub against each other when the unit runs. Also be sure that wiring connections are tight and properly secured.

CHECKOUT PROCEDURE

After installation has been completed, it is recommended that the entire system be checked against the following list:

1. Leak check refrigerant lines. ………………………………….. [ ]
2. Properly insulate suction lines and fittings………………… [ ]
3. Properly secure and isolate all refrigerant lines…………. [ ]
4. Seal passages through masonry. If mortar is used, prevent mortar from coming into direct contact with copper tubing………………………. [ ]
5. Verify that all electrical connections are tight…………….. [ ]
6. Observe outdoor fan during on cycle for clearance and smooth operation……………………………………………. [ ]
7. Be sure that indoor coil drain line drains freely. Pour water into drain pan……………………………………………………….. [ ]
8. Be sure that supply registers and return grilles are open and unobstructed………………………………………………….. [ ]
9. Be sure that a return air filter is installed………………….. [ ]
10. Be sure that the correct airflow setting is used. (Indoor blower motor)……………………………………………. [ ]
11. Operate complete system in each mode to ensure safe operation……………………………………………. [ ]

Refrigeration Circuits

5030 & 5036 Models

5042 & 5048 Models

5060 Models

Wiring Diagrams

4TTR5018 – 048 Models

4TTR5018 – 048 Models

4TTR5060 Models

4TTR5060 Models

Pressure Curves

PRES SURE CURVES (Refer below table for models)

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 INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, LIQUID AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION (5) PRESSURE IN LEFT COLUMN .

EXAMPLE

1. OUTDOOR TEMP. 82 F.
2. INDOOR WET BULB 67 F.
3. AT INTERSECTION
4. LIQUID PRESSURE @ 600 CFM IS 286 PSIG
5. SUCTION PRESSURE @ 600 CFM IS 143 PSIG

• ACTUAL
• LIQUID PRESSURE SHOULD BE +/- 10 PSI OF CHART
• SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

PRES SURE CURVES (Refer below table for models)

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 INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, LIQUID AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION (5) PRESSURE IN LEFT COLUMN .

EXAMPLE

1. OUTDOOR TEMP. 82 F.
2. INDOOR WET BULB 67 F.
3. AT INTERSECTION
4. LIQUID PRESSURE @ 600 CFM IS 300 PSIG
5. SUCTION PRESSURE @ 600 CFM IS 143 PSIG

• ACTUAL:
• LIQUID PRESSURE SHOULD BE +/- 10 PSI OF CHART
• SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

PRESSURE CURVES (Refer below table for models)

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 INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, LIQUID AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION (5) PRESSURE IN LEFT COLUMN .

EXAMPLE

1. OUTDOOR TEMP. 82 F.
2. INDOOR WET BULB 67 F.
3. AT INTERSECTION
4. LIQUID PRESSURE @ 600 CFM IS 313 PSIG
5. SUCTION PRESSURE @ 600 CFM IS 134 PSIG

• ACTUAL
• LIQUID PRESSURE SHOULD BE +/- 10 PSI OF CHART
• SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

Trane – by Trane Technologies (NYSE: TT), a global climate innovator – creates comfortable, energy efficient indoor environments for commercial and residential applications. For more information, please visit trane.com or tranetechnologies.com. The 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 data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

18-AC123D1-1B-EN 05 Jul 2022 Supersedes 18-AC123D1-1A-EN (April 2022)

References

• Trane Heating & Air Conditioning
• P65Warnings.ca.gov

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