Carrier 50TCQA04 - User Manual

1
Installation Instructions
50TCQ
Single Package Rooftop
Heat Pump
with Puronr (R---410A) Refrigerant
S i z e s 0 4 --- 0 7
50TCQ 07 units for installation in the United States contain use of Carrier's Staged Air
Volume (SAV™) 2-speed indoor fan control system. This complies with the U.S. Department
of Energy (DOE) efficiency standard of 2018.
50TCQ 07 units for installation outside the United States may or may not contain use of the
SAV 2-speed indoor fan control system as they are not required to comply with the U.S.
Department of Energy (DOE) efficiency standard of 2018.
For specific details on operation of the Carrier SAV 2-speed indoor fan system refer to the
Variable Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation,
Setup and Troubleshooting manual.
NOTE: Read the entire instruction manual before starting
the installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 3....................
Rated Indoor Airflow (cfm) 4.....................
REFRIGERATION SYSTEM COMPONENTS 7.......
INSTALLATION 9...............................
Jobsite Survey 9................................
Step 1 -- Plan for Unit Location 9..................
Roof Mount 9...............................
Step 2 -- Plan for Sequence of Unit Installation 9......
Curb--Mounted Installation 9...................
Pad--Mounted Installation 9....................
Frame--Mounted Installation 9..................
Step 3 -- Inspect Unit 9...........................
Step 4 -- Provide Unit Support 9...................
Roof Curb Mount 9..........................
Slab Mount (Horizontal Units Only) 11..........
Alternate Unit Support
(In Lieu of Curb or Slab Mount) 11.............
Step 5 -- Field Fabricate Ductwork 11...............
For Units with Accessory Electric Heaters 11.....
Step 6 -- Rig and Place Unit 11....................
Positioning on Curb 12.......................
Step 7 -- Convert to Horizontal and Connect
Ductwork 12...........................
Step 8 -- Install Outside Air Hood 13...............
Economizer and Tw o--Po s ition D amper Hood
Pack age Remov al and Setu p — Facto ry O p tion 13..
Economizer Hood and Two--Position Hood 13.....
Step 9 -- Units with Hinged Panels Only 14..........
Step 10 -- Install External Condensate Trap
and Line 14............................
Step 11 -- Make Electrical Connections 15...........
Field Power Supply 15........................
Units with Factory--Installed
Non--Fused Disconnect 18.....................
Units Without Factory--Installed
Non--Fused Disconnect 18.....................
All Units 18................................
Convenie nce Outlets 18.......................
Factory--Option Thru--Base Connec tions 20......
Units Without Thru--Base Connections 20........
Field Control Wiring 20.......................
Thermostat 20...............................
Unit Without Thru--Base Connection Kit 21.......
Heat Anticipator Settings 21...................
Central Terminal Board 21......................
Commercial Defrost Control 21..................
Electric Heaters 23............................
Single Point Boxes and Supplementary Fuses 24...
Single Point Boxes Without Fuses 24............
Low--Voltage Control Connections 24............

Carrier 50TCQA04 Specifications