Trane PKG-SVX17A-EN manual Installation, Gaseous Charging

Installation

Table 3: CTA Refrigerant Charge

Model	Refrigerant Charge
	(R-410A)*
CTA090A	18.1 lbs
w/SCRH030
CTA090A	19.9 lbs
w/SCRH050
CTA120A	20.8 lbs
w/SCRH075
CTA120B	11.9 lbs
w/SCRH100	(Ckt. #1 & #2)
CTA180B	16.8 lbs. (Ckt. #1)
w/SCRH120	16.0 lbs. (Ckt. #2)
CTA180B	17.5 lbs. (Ckt. #1)
w/SCRH150	16.9 lbs. (Ckt. #2)

*Sufficient operating charge for listed unit and 33 feet of nominally sized refrigerant piping.

Table 4: Additional Refrigerant

Tubing Sizes		Additional	Additional
		Tubing
Discharge	Liquid		Refrig.
		Length
7/8"	1/2"	15 ft.	1.3 lbs
7/8"	1/2"	25 ft.	2.2 lbs
7/8"	1/2"	32 ft.	2.8 lbs
7/8"	1/2"	40 ft.	3.5 lbs

Note: Amounts shown are based on 0.087 lbs of refrigerant per foot of 7/8" and 1/2" lines.

Note: For tubing over 40 feet, calculate the additional refrigerant needed, based on notes above.

Gaseous Charging

This procedure is accomplished with the unit operating. Electrical connec- tions must be complete. Do not pro- ceed until the system is ready to operate.

Procedure

1.Connect R-410A drum with gauge manifold to the gauge ports (pres- sure taps) on the compressor dis- charge and suction lines (Figure 7).

Note: On the CTA units, the service access panel must be installed when the unit is running and being charged.

PKG-SVX17A-EN

WARNING:

Hazardous Energy Sources!

Use extreme caution while servic- ing the unit when the control box access panel is removed and power is applied to the unit. Fail- ure to observe all safety precau- tions could result in death or serious injury.

2.Turn on power to the unit. Allow the system to run for five to ten minutes to stabilize operating conditions.

3.Measure airflow across the indoor coil. Compare the measurements with the fan performance data in the Data/Submittal.

4.Check suction line superheat and condenser sub-cooling to ensure the unit is operating properly.

5.Disconnect all power to the unit.

WARNING:

Hazardous Voltage w/Capacitors!

Disconnect all electrical power, including remote disconnects and discharge all motor start/run ca- pacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be in- advertently energized. Verify with an appropriate voltmeter that all capacitors have discharged. Fail- ure to diconnect power and dis- charge capacitors before servicing could result in death or serious injury.

Note: For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN or PROD-SVB06A-FR.

6.Remove the charging system from the unit and replace all access pan- els.

Electrical Wiring

CTA field wiring consists of providing power supply to the unit, installing the system indoor thermostat and provid- ing low voltage system interconnect- ing wiring. Access to electrical connection locations is shown in Fig- ures 1 through 4.

Unit Power Supply

The installer must provide line voltage circuit(s) to the unit main power termi- nals as shown by the unit wiring dia- grams in Figures 9 and 10 on page 15. Power supply must include a discon- nect switch in a location convenient to the unit. Ground the unit according to local codes and provide flexible con- duit if codes require and/or if vibration transmission may cause noise prob- lems.

CAUTION:

Use Copper Conductors Only! Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors may result in equipment damage.

CAUTION:

All wiring must comply with appli- cable local and national NEC codes. Type and location of dis- connect switches must comply with all applicable codes.

WARNING:

Ground Wire!

All field-installed wiring must be completed by qualified personnel. All field-installed wiring must comply with NEC and applicable local codes. Failure to follow this instruction could result in death or serious injuries.

WARNING:

Grounding Required!

Follow proper local and state elec- trical code on requirements for grounding. Failure to follow code could result in death or serious in- jury

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