Trane 4TTR3030N User Manual

18-AC79D1-10D-EN
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 informa-
tion 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.
4TTR3
Table of Contents
Section 1. Safety ..................................................................................... 2
Section 2. Unit Location Considerations ............................................. 3
Section 3. Unit Preparation .................................................................... 5
Section 4. Setting the Unit ..................................................................... 5
Section 5. Refrigerant Line Considerations ......................................... 6
Section 6. Refrigerant Line Routing ..................................................... 8
Section 7. Refrigerant Line Brazing ...................................................... 9
Section 8. Refrigerant Line Leak Check ............................................. 11
Section 9. Evacuation .......................................................................... 12
Section 10. Service Valves .................................................................. 12
Section 11. Electrical - Low Voltage ................................................... 13
Section 12. Electrical - High Voltage .................................................. 15
Section 13. Start Up .............................................................................. 16
Section 14. System Charge Adjustment ............................................. 17
Section 15. Checkout Procedures ...................................................... 23
Section 16. Refrigerant Circuits .......................................................... 24
Section 17. Wiring Diagrams ............................................................... 26
Section 18. Pressure Curves ............................................................... 34
Installation and Operation Manual

Trane 4TTR3030N Specifications

General

Brand	Trane
Model Number	4TTR3030N
Category	Heat Pump
Cooling Capacity (BTU/h)	30000
Heating Capacity (BTU/h)	30000
Refrigerant Type	R-410A
Voltage (V)	208/230
Phase	1
Frequency	60
Unit Weight (lbs)	220
Compressor Type	Scroll

Summary

Section 1. Safety

General Installation Safety

Electrical Hazard Warning

Warning regarding electrical shock hazard during installation, testing, and servicing.

R-410A Refrigerant & Oil Handling

Safety guidelines for R-410A refrigerant and POE oil, including pressure and hygroscopic properties.

Refrigerant Line & Compressor Safety

Liquid Line Valve Operation

Extreme caution advised when opening the liquid line service valve due to pressure.

Section 5. Refrigerant Line Considerations

Factory Refrigerant Charge

Section 7. Refrigerant Line Brazing

Braze Refrigerant Lines

Step-by-step instructions for preparing and brazing refrigerant lines to service valves.

Section 8. Refrigerant Line Leak Check

Check For Leaks

Procedure for pressurizing lines with nitrogen and checking for leaks using soapy solution.

Section 9. Evacuation

Evacuate Refrigerant Lines and Indoor Coil

Steps for evacuating the system to a specific micron level using a vacuum pump.

Section 10. Service Valves

Open Gas Service Valve

Open Liquid Service Valve

Procedure for opening the liquid service valve with a warning about pressure release.

Section 11. Electrical - Low Voltage

Low Voltage Hook-up Diagrams

Section 12. Electrical - High Voltage

High Voltage Power Supply

Section 13. Start Up

System Start Up Procedure

Steps for powering up the system, setting the thermostat, and stabilization time.

Section 14. System Charge Adjustment

Temperature Measurements for Charging

Subcooling Charging (Above 55° F)

Method for adjusting charge using subcooling for outdoor temps above 55°F.

Subcooling Charging (Below 55° F)

Recommended charge method for outdoor temperatures below 55°F is weighing.

Section 15. Checkout Procedures

Operational & Checkout Procedures

Checklist for final unit inspection and operational verification.

Section 17. Wiring Diagrams

Wiring Diagrams: 018N, 030N, 036N, 042N, 048N, 018H, 024H, 043A, 049A

Wiring Diagrams: 030H, 036H, 042E Models

Wiring Diagrams: 048E, 060E, 060N Models

Section 18. Pressure Curves

Cooling Performance Pressure Curves

Charts showing liquid/suction pressures vs. outdoor temp for cooling performance checks.