These installation instructions cover the installation of the matched systems listed in table 2.

Parts List

Indoor Unit

The following items are included with the indoor unit:

Table 1 – Installation Materials

Description

Qty

Usage

Wall Mounting

1

For Indoor Unit Installation

Bracket

 

 

Screws, 4XL10

2

For Attaching The Remote Control

Holder To The Wall

 

 

Screws, 5XL25

5/14*

For Attaching The Mounting Bracket To

The Wall

 

 

Remote Control

1

For Controlling Unit

Remote Control

1

Holder For Remote Control

Holder

 

 

* 5 screws for unit sizes 18 and 24. 14 screws for unit sizes 30 and 36.

Outdoor Unit

The following items are included with the outdoor unit:

38HDF018-036

A09499

Fig. 5 - 38HDF018-036

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A09500

 

 

Fig. 6 - 38QRF018-036

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

Filter Drier

 

Piston

 

 

Pistons*

 

 

Flare

 

 

Cap

 

 

 

Connector

 

 

 

 

 

 

 

 

 

 

 

38HDF

 

n

 

 

n

 

 

 

n

 

 

 

 

n

38QRF

 

n

 

 

n (qty 2)

 

 

 

n

 

 

n (qty 3)

* Multiple pistons. Quantity varies with size.

 

 

 

 

 

 

 

 

 

Table 2 – Matched Systems

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System

Nominal

 

 

Outdoor

 

 

 

 

 

Indoor

 

Type

Capacity

 

 

Unit

 

 

 

 

 

 

Unit

 

 

 

018

 

38HDF018--- ---

---3

 

40QNC018024

--- --- ---3

Cooling

024

 

38HDF024--- ---

---3

 

40QNC018024

--- --- ---3

Only

030

 

38HDF030--- ---

---3

 

 

40QNC030

---

--- ---3

 

036

38HDF036--- --- ---

3/5/6

 

 

40QNC036

---

--- ---3

 

018

 

38QRF018--- ---

---3

 

 

40QNQ018

---

--- ---3

Heat

024

 

38QRF024--- ---

---3

 

 

40QNQ024

---

--- ---3

Pump

030

 

38QRF030--- ---

---3

 

 

40QNQ030

---

--- ---3

 

036

38QRF036--- --- ---

3/5/6

 

 

40QNQ036

---

--- ---3

SYSTEM REQUIREMENTS

Clearances

Allow sufficient space around the indoor and outdoor unit for proper airflow circulation and servicing. Refer to Fig. 3 and Fig. 4 for minimum required clearances.

Piping: Piping and insulation is field supplied.

Piping Lengths

The minimum length between the indoor and outdoor units is 10 ft (3 m). Refer to table 3 for the maximum lengths allowed.

Table 3 – Maximum Refrigerant Line Lengths

Unit

Max Line

Max Elevation (ID

Max Elevation (OD

Size

Length ft(m)

over OD) ft(m)

over OD) ft(m)

18K

200 (61)

65 (19.8)

200 (61)

24K

200 (61)

65 (19.8)

200 (61)

30K

200 (61)

65 (19.8)

200 (61)

36K

200 (61)

65 (19.8)

200 (61)

Note:For lengths greater than 25 ft (7.6 m), refer to the Duct Free Long Line Guide.

Pipe Sizes

Refer to table 4 for pipe sizes.

Table 4 – Pipe Sizes

Pipe Sizes (in)

Unit Size

Mix Phase --- in

Vapor --- in

18K

3/8

5/8

24K

3/8

5/8

30K

3/8

3/4

36K

3/8

3/4

Note:Both lines need to be insulated using at least 1/2 inch closed foam insulation.

Condensate Drain Pipe Sizes

Refer to table 5 for the required sizes.

Table 5 – Drain Pipe Sizes

Unit Size

Outside Diameter --- in

Inside Diameter --- in

18K

5/8

7/16

24K

5/8

7/16

30K

3/4

5/9

36K

3/4

5/9

Note:Do not trap condensate pipe.

4

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Carrier 40QNQ, 40QNC installation instructions System Requirements, Parts List

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.