Carrier Gemini 38AXQ 25 Series Manuals

Manuals and User Guides for Carrier Gemini 38AXQ 25 Series. We have 1 Carrier Gemini 38AXQ 25 Series manual available for free PDF download: Installation, Start-Up And Service Instructions Manual

Carrier Gemini 38AXQ 25 Series Installation, Start-Up And Service Instructions Manual (56 pages)

Heat Pump Condensing Units with Puron Advance (R-454B) Refrigerant

Brand: Carrier | Category: Heat Pump | Size: 6 MB

Table of Contents
1
Safety Considerations
2
Electrical Shock Hazard
2
Cut Hazard
2
Detection of Flammable Refrigerants
3
Ignition Source Mitigation
3
Ventilation Requirements
3
Installation Guideline
3
Installation
3
General
3
Rated Indoor Airflow (Cfm)
3
Installation
9
Jobsite Survey
9
Step 1 - Plan for Unit Location
9
Requirements of A2L Refrigerant Piping
9
Step 2 - Complete Pre-Installation Checks
9
Check Unit Electric Characteristic
9
Un-Crate Unit
9
Inspect Shipment
9
Consider System Requirements
9
Step 3 - Prepare Unit Mounting Support
9
Step 5 - Check Refrigerating Equipment
10
Step 6 - Determine Refrigerant Line Sizes
10
Liquid Lift
13
Suction Riser
13
Step 7 - Complete Refrigerant Piping
13
Connections
13
Check Vertical Separation
13
Provide Safety Relief
13
Refrigerant Line Sizing
13
Risers in Heat Pump Piping Systems
13
Liquid Line Riser
14
Vapor Line Riser
14
Install Filter Driers and Moisture Indicators
14
Install Liquid Line Solenoid Valves
15
Capacity Control Liquid Line Solenoid Valve
15
Make Piping Connections
15
Evacuation/Dehydration
15
Preliminary Charge
16
A2L Charging Requirements
16
Step 8 - Install Accessories
16
Step 9 - Complete Electrical Connections
16
Electric Shock Hazard
16
Field Power Supply
16
Fire Hazard
17
Units Without Factory-Installed Disconnect
17
Units with Factory-Installed Disconnect
17
All Units
17
Voltage and Current Balance
18
Convenience Outlets
18
Installing Weatherproof Cover
19
All Units
19
Field Control Wiring
19
Thermostat
19
Step 10 - Wind Baffles for Low Ambient Control
22
Pre-Start-Up
22
System Check
22
Turn on Crankcase Heater
22
Preliminary Charge
22
A2L Charging Requirements
22
Start-Up
22
38AXQ Units
22
Preliminary Checks
22
Compressor Rotation
22
Compressor Overload
23
Advanced Scroll Temperature Protection (Astp)
23
Start Unit
23
Adjust Refrigerant Charge
23
38Axz16-28 Check Compressor Oil Level
23
Final Checks
23
Operating Sequence
25
Base Unit Controls
25
Indoor (Supply) Fan
25
Cooling, Unit Without Economizer
25
Cooling, Unit with Economizer
25
Heating
25
Defrost Cycle
25
Supplemental Heat/Emergency Heat
26
Cooling and Heating Shutdown
26
Fan Cycling
26
Maintenance
26
Quarterly Inspection  (and 30 Days after Initial Start)
26
Indoor Section
26
Seasonal Maintenance
26
Air Conditioning
26
Service
27
Refrigeration System
27
Compressor Oil
27
Liquid Line Filter Drier
27
Field Refrigerant Access Ports
27
Outdoor Coil Metering Devices
28
Refrigerant System Pressure Access Ports
28
Compressor Protection
29
Compressor Overcurrent
29
Compressor Overtemperature Protection (Ip)
29
Crankcase Heater
29
High Pressure Switch
29
Loss of Charge Switch
29
Outdoor Fan Motor Protection
29
Control Circuit, 24-V
29
Reversing Valve Control
30
Compressor Control
30
Fastener Torque Values
37
Troubleshooting
38
Preliminary Information
55
Indoor Unit
55

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Carrier Gemini 38AXQ 25 Series Manuals

Carrier Gemini 38AXQ 25 Series Installation, Start-Up And Service Instructions Manual (56 pages)

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