Pre-Start And Start-Up - Carrier WeatherMaster Series Installation Instructions Manual

STAGE CAPACITY METERING
Part Load
Y1
(66%)
Full Load
Y1+Y2 TXV+Fixed
(100%)

Pre-Start and Start-Up

This completes the mechanical installation of the unit. Re-
fer to the unit's Service Manual for detailed pre-start and
start-up instructions. Download the latest versions from
HVAC Partners (www.hvacpartners.com).
© Carrier Corporation 2018
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500208-01
Table 20 — UltraTech Compressor (50HC07 Units)
LIQUID LINE
SOLENOID
Closed (De-
TXV
energized)
Open (Energized)
Printed in U.S.A.
FOR ULTRA TECH
COMPRESSOR COMPRESSOR
UNLOADER TROUBLESHOOTING
(COMPRESSOR CURRENT)
De-energized Approx. 80% or less
Energized
Form 50HC-7-12-07SI
FOR LIQUID LINE SOLENOID
VALVE TROUBLESHOOTING
(TOP EVAPORATOR COIL
TEMPERATURE)
Top section of the evaporator coil
will not be cold (U-bend tubes)
Top section of the evaporator coil
100%
will be cold (U-bend tubes)
Pg 50 11-18 Replaces: 50HC-7-12-06SI