Trane 4TTM3018 Installer's Manual page 18

STEP 4 - Measure Outdoor Ambient air temperature
entering coil.
Outdoor Ambient air temperature = ________°F
STEP 5 - Measure Suction Line and Liquid line pres-
sures
Suction Line Pressure = __________ PSIG
Liquid Line Pressure = __________ PSIG
Note: If Suction Line Pressure is below 115 PSIG
the system may experience fluctuations in pressures
and temperatures due to expansion valve hunting. If
fluctuations in Suction Line Pressure are noted then
use the average PSIG.
STEP 6 - Determine the Liquid Line Temperature
Attach a K-type temperature probe to the Liquid Line
close to the Liquid Line Service Valve. The probe
must be insulated.
Measured Liquid Line Temp = __________ ºF
18
6"
Manual Charge Assist Hookup
Leave bottle closed until ready to charge
Insulation
107 °F
18-AC78D1-6