Carrier 40QNQ installation instructions Safety Considerations, 40QNC, QNQ Unit

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40QNC / 38HDF 40QNQ / 38QRF

High---Wall Duct Free Split System Sizes 018 to 036

Installation Instructions

40QNC, QNQ Unit

NOTE: Read the entire instruction manual before starting the installation.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal injury or equipment damage.

Puron refrigerant systems operate at higher pressures than standard R-22 systems. To avoid damage to the unit or possible personal injury, do not use R-22 service equipment or components on Puron refrigerant equipment.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and current editions of the National Electrical Code ( NEC ) NFPA 70. In Canada, refer to current editions of the Canadian electrical code CSA 22.1.

Recognize safety information. This is the safety-alert symbol ! When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.

!CAUTION

PERSONAL INJURY AND EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in personal injury and / or equipment damage.

DO NOT operate the unit without a filter or with grille removed.

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Contents 40QNC, QNQ Unit Safety ConsiderationsDimensions Outdoor Dimensions IndoorClearances Outdoor Clearances IndoorCoil Facing Wall --- in. mm Fan Facing Wall --- in. mm System Requirements Parts ListAccessories Power and Connecting Cables Field SuppliedUser Interface Operating RangeComplete Pre-installation Checks InstallationConsider System Requirements Refrigerant Line RoutingMounting on Ground Side Or Bottom PipingMounting on Roof Mounting Unit on Wall Complete Outdoor Refrigerant Piping Connec- tionsConnection at Outdoor Unit 38HDF UnitsPower Wiring Complete Outdoor Power and Control Wiring38QRF Units 38QRF Control Terminal Strip 40QNC, QNQ Fan Coil Electrical Data 38HDF / 38QRF Electrical Data40QNC01824 Matched with 38HDF Typical Wiring Schematic 40QNQ018,024 Matched with 38QRF Typical Wiring Schematic 40QNC030, 036 Matched with 38HDF Typical Wiring Schematic 40QNQ030, 036 Matched with 38QRF Typical Wiring Schematic Location of Piping, Hose, and Wiring Run Power Wiring for Indoor UnitRemote Control Configuration Unit ConfigurationWired Control Control Wiring Between Indoor and Outdoor Units Zone Manager Wiring for Zone ManagerSTART-UP Using Vacuum PumpPreliminary Checks Evacuate and Dehydrate the SystemSet Unit in Test Mode Using Wireless Control Test Mode Sequence of OperationSet Unit in Test Mode Using Wired Control To Start the UnitPump-down Procedure ServiceRefrigerant Charging Filter DrierFault Code TroubleshootingGreen LED Indoor Unit Fault TroubleshootingCatalog No 40QNC---Q---9SI

40QNQ, 40QNC specifications

The Carrier 40QNC and 40QNQ are advanced rooftop packaged units designed for efficient heating and cooling in commercial applications. These units are particularly known for their reliability, versatility, and energy-efficient performance, making them a preferred choice for building owners and HVAC professionals alike.

One of the standout features of the Carrier 40QNC and 40QNQ units is their variable-speed technology. This innovative system allows for precise control of airflow and temperature, ensuring that indoor environments maintain consistent comfort levels while minimizing energy consumption. The variable-speed compressor operates at different speeds based on the cooling demand, leading to reduced energy costs and improved overall efficiency.

In terms of energy performance, both models boast high Seasonal Energy Efficiency Ratios (SEER) and Heating Seasonal Performance Factors (HSPF). This not only contributes to lower energy bills but also helps in meeting energy efficiency standards and regulations in various regions. This makes the 40QNC and 40QNQ ideal for environmentally conscious building projects aiming for sustainability.

Another notable feature is the advanced microchannel coil technology utilized in these units. Microchannel coils are lighter, more compact, and provide enhanced heat exchange capabilities compared to traditional coils. This technology contributes to a more efficient refrigerant flow and ultimately leads to improved performance and durability of the unit.

Moreover, both models come equipped with a robust control system that enhances user interface. With smart thermostat compatibility, users can easily manage their building's climate remotely, ensuring optimal comfort and energy management. These systems are designed to integrate seamlessly with building management systems (BMS), allowing for greater control and optimization.

The construction of the Carrier 40QNC and 40QNQ also deserves mention. The units are built with durable materials designed to withstand harsh weather conditions, providing longevity and reliability. Additionally, the low sound levels produced by these units make them suitable for noise-sensitive settings, ensuring comfort without disruptive operation.

In summary, the Carrier 40QNC and 40QNQ are exemplary rooftop packaged units that combine advanced technology, energy efficiency, and reliable performance. Their variable-speed operation, microchannel coil technology, and robust control systems make them ideal solutions for commercial heating and cooling needs, catering to both comfort and sustainability.