Contents

SAFETY CONSIDERATIONS
PRE-INSTALLATION
- General
  - CONTROL OFFERINGS
  - STORAGE AND HANDLING
  - INITIAL INSPECTION
- Unit Identification
  - INSTALLATION PRECAUTION
  - SERVICE ACCESS
  - CODES
  - UNIT SUSPENSION
- Warranty
  - CONTROL OPTIONS
- VAV CCN Controls and OPEN VAV Controls
- VVT CCN Controls and OPEN VVT Controls
- Analog Electronic Controls
- Pneumatic Controls
- Direct Digital Controls (By Others)
- No Control Units
INSTALLATION
- Step 1 Install Fan-Powered Box
  - SELECT LOCATION
  - POSITION UNIT
  - INSTALL UNIT
- Step 2 Make Duct Connections
- Step 3 Connect Power Wiring (See Fig. 8)
- Step 4 Set Up System and Calibrate
  - GENERAL
  - SET POINTS
  - SYSTEM CALIBRATION OF THE INLET AIRFLOW SENSOR
START-UP
- General
- Initial Start-Up Procedures
- Balancing Carrier Fan Terminals
  - 45J,K,Q SERIES FLOW UNITS
  - BALANCING 45M,N,R PARALLEL FLOW UNITS
- Speed Controller
- Setting Fan Air Flow with ECM Motors
  - VCU (CONTROL OPTION 6)
  - ACU-O, 0-10VDC (0-20MA) INPUT (CONTROL OPTION 7)
  - ACU-P, 2-10VDC (4-20MA) INPUT (CONTROL OPTION 8)
- General Single Function Pneumatic Controller Control Sequences (1300-1305, 1400-1401)
- Units with Single-Function Controllers
- Units with Multi-Function Controllers (Sequences 1306-1317 and 1402-1405)
- Operation Sequences
- Analog Controls Installation and Balancing Procedures
- Thermostat Installation
- Programming Thermostat
- Controls
- Fan Motor and Wheel
  - TO CHECK WIRING (Refer to Fig. 18-20)
  - TROUBLESHOOTING
- Fan Motor Wiring
- Fan Motor Maintenance

Carrier 45Q Installation Instructions

Pages 24

Year 2018

Language(s)

of 24

Carrier 45Q Specification

The Carrier 45Q is an advanced HVAC unit designed to deliver superior climate control and energy efficiency for residential and light commercial applications. At its core, the unit features a robust variable-speed compressor that ensures optimal performance by adjusting cooling output to meet specific demands, thus enhancing comfort while minimizing energy consumption. The system operates on a high-efficiency refrigerant, reducing environmental impact and aligning with modern sustainability standards.

This model incorporates Carrier's proprietary humidity control technology, which maintains optimal indoor air quality by efficiently managing moisture levels. The 45Q is equipped with an advanced filtration system that captures a wide range of airborne particles, contributing to a healthier indoor environment. Its user-friendly interface includes a smart control panel compatible with Wi-Fi, allowing for seamless integration with home automation systems and remote access via smartphone applications.

Designed for quiet operation, the Carrier 45Q ensures minimal noise disruption, making it suitable for various settings. Its durable construction features corrosion-resistant materials, enhancing longevity and reliability even under challenging environmental conditions. The unit is engineered for easy installation and maintenance, with accessible components and clear diagnostic capabilities that simplify service procedures.

In terms of specifications, the Carrier 45Q offers a range of BTU capacities to suit different space requirements. It is compatible with multiple duct configurations, providing flexibility in installation. Its Energy Star certification attests to its efficiency, potentially qualifying users for rebates and incentives. Overall, the Carrier 45Q represents a blend of innovative technology, energy efficiency, and user-centric design, making it a versatile choice for those seeking a high-performance HVAC system.

Carrier 45Q F.A.Q.

How do I perform a basic maintenance check on my Carrier 45Q?

To perform a basic maintenance check, ensure the unit is powered off, inspect and clean the air filters, check for any blockages in the vents, and ensure all electrical connections are secure.

What should I do if my Carrier 45Q is not cooling properly?

First, check if the thermostat settings are correct. Ensure that the air filters are clean and the vents are not blocked. If the issue persists, inspect the condenser coils and seek professional assistance if needed.

How often should I replace the air filters in my Carrier 45Q?

It is recommended to replace the air filters every 3-6 months, depending on usage and air quality conditions.

Can I use a smart thermostat with my Carrier 45Q?

Yes, the Carrier 45Q is compatible with most smart thermostats. Refer to the thermostat's installation guide for specific instructions.

What is the correct procedure to reset my Carrier 45Q unit?

To reset your unit, turn off the power supply, wait approximately 5 minutes, and then restore power. Check if the system resumes normal operation.

Why is my Carrier 45Q making unusual noises?

Unusual noises can result from loose components, debris in the fan, or worn-out parts. Inspect the unit for visible issues and tighten any loose parts. Consult a technician if the noise persists.

How can I improve the energy efficiency of my Carrier 45Q?

Ensure regular maintenance, keep the air filters clean, seal any air leaks in your home, and use a programmable thermostat to optimize cooling schedules.

What should I do if my Carrier 45Q is leaking water?

Check if the drain line is clogged or disconnected. Clear any blockages and ensure the line is properly connected. If the problem continues, contact a professional technician.

How do I change the fan speed on my Carrier 45Q unit?

To change the fan speed, access the control panel of the unit, navigate to the fan settings, and select your desired speed. Refer to the user manual for detailed instructions.

What maintenance should be done before using the Carrier 45Q after a long period of inactivity?

Inspect and clean the air filters, check the electrical connections, ensure the outdoor unit is free from debris, and test the system for proper operation.