Contents

SAFETY CONSIDERATIONS
- AHRI Certification
- C-ETL-US Listing
- Introduction
Pre-Installation
- Unpacking and Inspection
- Prepare Job Site for Unit Installation
- Identify and Prepare Units
- Protect Units from Damage
Installation
- Step 1 Place Unit In Position
  - HORIZONTAL UNITS
  - VERTICAL UNITS
  - Total Weight Unit Correction Factor (lb)
- Step 2 Install Mixing Box
  - Inlet and outlet dampers installation
- Step 3 Connect Cooling/Heating Piping
  - Leak Testing
  - Refrigerant Coil Testing
  - Piping Insulation
  - Condensate Drain
  - Condensate Float switch
- Step 4 Make Electrical Connections
  - Cabinet/Control Box Maintenance Light
- Step 5 Connect Ductwork
- Step 6 Make Final Preparations
Start-up
- Cooling/Heating System
- Air Balance System
- Motor/Blower Assembly
- Electronically Commutated Motor (ECM)
- Control Board Adjustment
- Water Balancing System
- Water Treatment
Service
- General
- Coils
- Electric Resistance Heater Assembly
- Cabinet/Control Box Maintenance Light
- Electrical Wiring and Controls
- Drain
- Filters Throwaway
- Filters Replacement and Installation
Appendix A Typical Wiring Diagram Examples
START-UP CHECKLIST

Carrier Airstream 42DH Installation Instructions

Pages 40

Year 2020

Language(s)

of 40

Carrier Airstream 42DH Specification

The Carrier Airstream 42DH is a versatile air conditioning unit designed to deliver efficient cooling and heating solutions for medium to large spaces. This unit is engineered with advanced technology to ensure optimal climate control and energy efficiency. It operates on a high-efficiency scroll compressor, providing reliable performance with a focus on reducing energy consumption. The 42DH model includes a microprocessor-based control system that offers precise temperature regulation and user-friendly operation. It supports multiple modes, including cooling, heating, and dehumidification, making it suitable for various climate needs.

The Airstream 42DH features an advanced filtration system aimed at improving indoor air quality by removing dust, allergens, and other airborne particles. This enhances comfort and health within the conditioned space. The unit is designed with a robust corrosion-resistant casing, ensuring durability and longevity even in challenging environments.

Installation flexibility is a key feature of the 42DH, with options for both horizontal and vertical installations, catering to diverse architectural requirements. The unit operates with low sound levels, contributing to a quiet indoor environment. It is compatible with various control options, including remote and wired controls, allowing for integration with building management systems.

Maintenance of the Carrier Airstream 42DH is streamlined through easily accessible components, reducing downtime and service costs. This unit complies with international safety and environmental standards, underscoring Carrier's commitment to sustainable practices. Overall, the Carrier Airstream 42DH is an ideal choice for those seeking a reliable, efficient, and adaptable air conditioning solution.

Carrier Airstream 42DH F.A.Q.

How do I properly install the Carrier Airstream 42DH unit?

Ensure the unit is mounted on a stable surface, connect all necessary power and refrigerant lines, and follow the manufacturer's installation guidelines for wiring and placement.

What should I do if the Carrier Airstream 42DH is not cooling effectively?

Check if the air filters are clean, ensure the thermostat is set correctly, and verify that the condenser coils are not blocked. If the issue persists, contact a professional technician.

How often should I clean the air filters on the Carrier Airstream 42DH?

It is recommended to clean or replace the air filters every 3 months to maintain optimal performance and efficiency.

What is the recommended maintenance schedule for the Carrier Airstream 42DH?

Perform routine maintenance every 6 months, which includes checking refrigerant levels, inspecting electrical connections, and cleaning coils and filters.

How can I troubleshoot a Carrier Airstream 42DH that won't turn on?

Check the power supply and circuit breakers, ensure the thermostat is functioning, and inspect the unit for any visible damage. If these steps do not resolve the issue, consult a technician.

What are the signs that the refrigerant level is low in my Carrier Airstream 42DH?

Signs include the unit not cooling properly, ice formation on the evaporator coil, and unusually high energy consumption.

How do I reset the Carrier Airstream 42DH system?

Turn off the unit and disconnect the power for a few minutes. Reconnect the power and turn the unit back on to reset the system.

How can I improve the energy efficiency of my Carrier Airstream 42DH?

Regularly clean the air filters, ensure doors and windows are sealed, use a programmable thermostat, and perform regular maintenance checks.

Is it normal for the Carrier Airstream 42DH to make noise during operation?

Some noise during operation is normal, such as gentle humming or airflow sounds. However, loud or unusual noises should be investigated as they may indicate a problem.

What should I do if I notice water leaking from the Carrier Airstream 42DH?

Check the condensate drain for blockages, ensure the unit is properly leveled, and inspect for any visible damage. If the issue continues, seek professional assistance.