dWG. NO. 4TWZ0060-SF-1B
ONLY DIPSWITCH
1 ON
ONLY DIPSWITCH
2 ON
ONLY DIPSWITCH
3 ON
LOWER *
MIDDLE
UPPER & 4TEE3_10
DOWNFLOW & HORIZ.
LEFT
**
55
208
208
210
60
225
225
227
65
242
242
245
70
260
260
264
75
280
280
284
80
300
300
305
85
322
322
327
90
345
345
350
95
369
369
374
100
394
394
400
105
420
420
426
110
447
447
454
115
476
476
483
120
505
505
513
125
536
536
544
PRINTED FROM D155859P04 REV 4
** Data is based on 16.7° of subcooling at a 95° ambient
* Data is based on 14.8° of subcooling at a 95° ambient
LIQUID GAGE PRESSURE (PSIG)
Liquid
Temp (°F)
5 TON HP R410A REFRIGERANT CHARGING CHART
3
WIRING dIAGRAM
MANuAL CHARGING OR CHARGe ASSIST
TM
MeTHOd IN
COOLing
BeTWeeN 55°F ANd 120°F Od AMBIeNT
It is recommended to install manufacturer approved matched indoor and
outdoor systems.
All approved split systems are ARI rated with only TXV indoor systems.
The benefits of installing approved indoor and outdoor split systems are
maxi mum efficiency, optimum performance and the best overall system
reliability. The following charging methods are therefore prescribed for
matched systems with indoor TXVs.
1. Subcooling using the R-410A Refrigerant Charging Chart (in the cooling
mode) is the only recommended method of charging between 55°F and
120°F ambient temperatures.
2. When charging for ambient temperatures above 120°F, charge to 10°
subcooling. It is important to return when outdoor ambient temperature
is between 55°F and 120°F to verify system charge per these instruc-
tions.
3. For best results – the indoor temperature should be kept between 70°F
to 80°F. Add system heat if needed.
4. At startup, or whenever charge is removed or added, the system must
be operated for a minimum twenty (20) minutes to stabilize before
accurate measurements can be made. (Feature of Charge Assist™)
5. Measure Liquid Line Temperature and Refrigerant Pressure at service
valves. (Not required with Charge Assist.™)
6. Determine total refrigerant line length, and height (lift) if indoor section is above the condenser. Set dip switches on Charge Assist™ board as
indicated in the Subcool Charging Corrections Table on page 2 .
7. Locate your liquid line temperature in the left column of the table, and the intersecting liquid line gage pressure under the DIPSWITCH selection
column. Add refrigerant to raise the pressure to match the table, or remove refrigerant to lower the pressure. For manual charging, always wait twen-
ty (20) minutes for the system conditions to stabilize before adjusting charge again. (Not required with Charge Assist.™)
8. Charge Assist port is designed for liquid refrigerant charging.
9. When system is correctly charged, you can refer to System Pressure Curves (on page 8) to verify typical performance.
