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Trane
A business of
American Standard Companies
www.trane.com

Trane has a policy of continuous product and product data improvement and it reserves the right to change
design and specifications without notice.

Installer’s Guide

18-BC51D1-4

CHECKOUT PROCEDURE

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

1. Refrigerant Line, Leak checked ................................... [

]

2. Suction Lines and Fittings properly insulated ............ [

]

3. Have all Refrigerant Lines been secured and

isolated properly? ......................................................... [

]

4. Have passages through masonry been sealed?

If mortar is used, prevent mortar from coming
into direct contact with copper tubing ......................... [

]

5. Verify tightness of all electrical connects .................... [

]

6. Observe outdoor fan during on cycle for clearance

and smooth operation ................................................... [

]

7. Indoor coil drain line drains freely. Pour water

into drain pan ............................................................... [

]

8. Supply registers and return grilles open and

unobstructed ................................................................ [

]

9. Return air filter installed ............................................. [

]

10. Thermostat thermometer is accurate. Check

against a reliable thermometer. Adjust per
instructions with thermostat ....................................... [

]

11. Is correct speed tap being used?

(Indoor blower motor) ................................................... [

]

12. Operate complete system in each mode to

insure safe operation. ................................................... [

]

MOUNTING HOLE LOCATION

NOTE: ALL DIMENSIONS ARE IN MM (INCHES).

NOTE:
For model base size,
see table on page 7.

From Dwg. 21D152637 Rev. 1

P.I.

7/06

Summary of Contents for 4TWR3

Page 1: ...use by individuals posses sing adequate backgrounds of electrical and mechanical experience Any attempt to repair a central air conditioning product may result in personal injury and or property dama...

Page 2: ...should not exceed sixty 60 feet liquid line 8 Locate and install indoor coil or air handler in accordance with instruction included with that unit C INSTALLING REFRIGERANT LINES CAUTION If using exist...

Page 3: ...indoor units is completed the field brazed connections must be checked for leaks Pressurize through the service valve ports the indoor unit and field refrigerant lines with dry nitrogen to 350 400 ps...

Page 4: ...te and relative capacity of the heat pump system By measuring the change in delta T we can determine the need for defrost The coil sensor also serves to sense outdoor coil temperature for termination...

Page 5: ...E W IR IN G C O M P R E S S O R IO L R U N C A P A C IT O R S T A R T C A P A C IT O R S T A R T R E L A Y C O N T A C T O R C O N T A C T S L O W V O L T A G E W IR IN G C O N T R O L T R A N S F O R...

Page 6: ...Subcool Charging Table Pressure 20 15 Use Design Subcool Value from Table 10 0 Subtract 10 psig from S C Table Pressure 10 20 25 30 40 60 80 TOTAL REFRIGERANT LINE LENGTH FEET REFRIGERANT LINE LIFT FE...

Page 7: ...946 37 1 4 870 34 1 4 7 8 3 8 152 6 98 3 7 8 219 8 5 8 86 3 3 8 508 20 4TWR3060A 4 1 1045 41 1 8 946 37 1 4 870 34 1 4 7 8 3 8 152 6 98 3 7 8 219 8 5 8 86 3 3 8 508 20 4TWR4018A 3 1 933 36 3 4 829 32...

Page 8: ...nry been sealed If mortar is used prevent mortar from coming into direct contact with copper tubing 5 Verify tightness of all electrical connects 6 Observe outdoor fan during on cycle for clearance an...

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