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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
Printed in U.S.A.
Form 50HC-7-12-07SI
Pg 50
11-18
Replaces: 50HC-7-12-06SI
© Carrier Corporation 2018
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).
Table 20 — UltraTech Compressor (50HC07 Units)
STAGE
CAPACITY
METERING
LIQUID LINE
SOLENOID
COMPRESSOR
UNLOADER
FOR ULTRA TECH
COMPRESSOR
TROUBLESHOOTING
(COMPRESSOR CURRENT)
FOR LIQUID LINE SOLENOID
VALVE TROUBLESHOOTING
(TOP EVAPORATOR COIL
TEMPERATURE)
Y1
Part Load
(66%)
TXV
Closed (De-
energized)
De-energized
Approx. 80% or less
Top section of the evaporator coil
will not be cold (U-bend tubes)
Y1+Y2
Full Load
(100%)
TXV+Fixed
Open (Energized)
Energized
100%
Top section of the evaporator coil
will be cold (U-bend tubes)
Summary of Contents for WeatherMaster 50HC*A07 Series
Page 4: ...4 Fig 2 Unit Dimensional Drawing Sizes 07 09 ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing Sizes 07 09 cont ...
Page 6: ...6 Fig 3 Unit Dimensional Drawing Sizes 11 and 12 ...
Page 7: ...7 Fig 3 Unit Dimensional Drawing Sizes 11 and 12 cont ...
Page 25: ...25 Fig 42 Electro Mechanical Control Wiring Diagram ...
Page 26: ...26 Fig 43 Electro Mechanical Control Wiring Diagram with Humidi MiZer System ...
Page 27: ...27 Fig 44 Typical ComfortLink Control Wiring Diagram 50HC 08 09 shown ...
Page 29: ...29 Fig 46 Typical PremierLink Control Wiring Diagram ...
Page 30: ...30 Fig 47 Typical PremierLink Control Wiring Diagram with Humidi MiZer System Option ...
Page 31: ...31 Fig 48 Typical RTU Open Controller Wiring Diagram ...
Page 32: ...32 Fig 49 Typical RTU Open Controller Wiring Diagram with Humidi MiZer System Option ...