Carrier 38AUQ 07-12 Series Manuals

Carrier 38AUQ 07-12 Series Manuals

Manuals and User Guides for Carrier 38AUQ 07-12 Series. We have 1 Carrier 38AUQ 07-12 Series manual available for free PDF download: Installation, Start-Up And Service Instructions Manual

Carrier 38AUQ 07-12 Series Installation, Start-Up And Service Instructions Manual

Carrier 38AUQ 07-12 Series Installation, Start-Up And Service Instructions Manual (48 pages)

Heat Pump Condensing Units with Puron® Refrigerant

Brand: Carrier | Category: Heat Pump | Size: 4.58 MB

Table of Contents

Table of Contents
1
Evaluate Existing Refrigerant Piping
3
Installation
3
Installation
7
Jobsite Survey
7
Step 1 - Plan for Unit Location
7
Step 2 - Complete Pre-Installation Checks
7
Check Unit Electric Characteristic
7
Uncrate Unit
7
Inspect Shipment
7
Consider System Requirements
7
Step 3 - Prepare Unit Mounting Support
8
Slab Mount
8
Step 4 - Rig and Mount the Unit
8
Rigging
8
Step 5 - Complete Refrigerant Piping
8
Connections
8
Check Vertical Separation
9
Provide Safety Relief
9
Refrigerant Line Sizing
9
Risers in Heat Pump Piping Systems
9
Liquid Line Riser
9
Vapor Line Riser
9
Install Filter Drier and Moisture Indicator
9
Install Liquid Line Solenoid Valves
10
Make Piping Connections
10
Evacuation/Dehydration
10
Preliminary Charge
11
Step 6 - Install Accessories
11
Step 7 - Complete Electrical Connections
11
Field Power Supply
11
Units Without Factory-Installed Disconnect
12
Units with Factory-Installed Disconnect
12
All Units
12
Voltage and Current Balance
12
Convenience Outlets
12
Installing Weatherproof Cover
13
Field Control Wiring
13
Thermostat
13
External Control Devices
14
Step 8 - Wind Baffles for Low Ambient Control
16
Pre-Start-Up
16
System Check
16
Turn on Crankcase Heater
16
Preliminary Charge
16
Start-Up
16
38AUQ Units
16
Preliminary Checks
16
Compressor Rotation
16
Compressor Overload
16
Advanced Scroll Temperature Protection (Astp)
17
Start Unit
17
Adjust Refrigerant Charge
17
Final Checks
17
Operating Sequence
20
Base Unit Controls
20
Indoor (Supply) Fan
20
Cooling, Unit Without Economizer - Two-Stage Units
20
Fan Cycling
21
Cooling, Unit with Economizer
21
Heating
21
Defrost Cycle
21
Supplemental Heat/Emergency Heat
22
Cooling and Heating Shutdown
22
Routine System Maintenance
22
Quarterly Inspection  (and 30 Days after Initial Start)
22
Indoor Section
22
Outdoor Section
22
Economizer or Outside Air Damper
22
Maintenance
22
Quarterly Inspection
22
(And 30 Days after Initial Start)
22
Service
23
Refrigeration System
23
Compressor Oil
23
Servicing Systems on Roofs with Synthetic Materials
23
Liquid Line Filter Drier
23
Field Refrigerant Access Ports
23
Outdoor Coil Metering Devices
24
Refrigerant System Pressure Access Ports
24
Compressor Protection
26
Compressor Overcurrent
26
Compressor Overtemperature Protection (Ip)
26
Crankcase Heater
26
High Pressure Switch
26
Loss of Charge Switch
26
Outdoor Fan Motor Protection
26
Control Circuit, 24-V
26

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