Carrier 50HCQA07 - Page 25

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Fig. 38 — Electro-Mechanical Control Wiring: 50HCQ*D07 Tier 2 (1) Compressor — 208/230v, 460v, 575v

Main Page

Safety Considerations1
- Table of Contents1
Model Number Nomenclature2
And Dimensions2
Rated Indoor Airflow2
Installation8
Jobsite Survey8
Step 1 - Plan for Unit Location9
- Roof Mount9
Step 2 - Plan for Sequence of Unit Installation9
- Curb-Mounted Installation9
- Pad-Mounted Installation9
- Frame-Mounted Installation9
Step 3 - Inspect Unit9
Step 4 - Provide Unit Support9
- Roof Curb Mount9
- Slab Mount (Horizontal Units Only)9
Step 5 - Field Fabricate Ductwork11
- Units with Accessory Electric Heaters11
Step 6 - Rig and Place Unit11
Step 7 - Convert to Horizontal and Connect Ductwork (When Required)12
Step 8 - Install Outside Air Hood13
- Economizer Hood Removal and Setup13
- Two-Position Damper Hood Removal and13
- Economizer and Two-Position Hood Assembly14
Step 9 - Units with Hinged Panels Only14
Step 10 - Install External Condensate Trap14
And Line14
Step 11 - Make Electrical Connections15
- Field Power Supply15
- Units Without Factory-Installed Disconnect15
- Units with Factory-Installed Disconnect15
- All Units16
- Convenience Outlets16
- Factory-Option Thru-Base Connections (Electrical Connections)18
- Field Control Wiring18
- Heat Anticipator Settings19
- Commercial Defrost Control19
- Electric Heaters21
- Control and Power Wiring Diagrams23
- Economi$Er (Factory Option)32
- Smoke Detectors45
- Rtu Open Controller (Factory Option)45
- Controller Options45
Step 12 - Adjust Factory-Installed Options45
- Economi$Er IV Occupancy Switch45
Step 13 - Install Accessories45
Step 14 - Check Belt Tension47
- Belt Force - Deflection Method47
- Belt Tension Method47
Pre-Start and Start-Up47
Typical Unit Piping47

Carrier 50HCQA07 - Page 25

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