point A or B as shown in Fig. 12 or Fig. 13. Drill the hole at a slope so that the outside end is 1/2 inch (13 mm) lower than inside end to ensure optimal drainage. Refer to Fig. 14.

Side Or Bottom Piping

Remove the knockout in the unit and drill a 2-1/2 inch (63.5 mm) hole where the pipe penetrates the structure using the guides given above.

 

 

35.4” (899.2)

3.5"

2.1"

 

(88.9)

2.8"

14.9" (378.5)

2.8"

7.7" (195.6)

(53.3)

(71.1)

 

(71.1)

 

 

 

 

1"

 

 

 

 

(25.4)

 

 

 

 

 

 

 

 

2.1"

 

 

 

 

(53.3)

A

2"

13.8" (130.5)

5.1”

B

 

(50.8)

Note: Numbers in ( ) = mm

(129.5)

 

 

 

 

A09046

Fig. 12 - 40QNC, QNQ018, 024 Mounting Plate

A

B

2"

5.1"

A09050

Fig. 13 - 40QNC, QNQ030, 036 Mounting Plate

1/2 in. (13 mm)

Min.

INDOOROUTDOOR

A07371

Fig. 14 - Drill Hole at Slope

4.Relocate drain connection if necessary - Determine if the installation requires a left or a right hand drain exit and relo- cate the drain hose if necessary as shown in Fig. 15.

Drain Cap

Drain Hose

A08362

Fig. 15 - Drain Hose and Cap Location

NOTE: If the condensate pump accessory is to be used, the drain hose can be cut to provide space for the space for the condensate pump reservoir in the back of the unit. The reservoir must be installed at this time. Please refer to installation instructions provided with the condensate pump accessory.

5.Place unit on a clean surface until you are ready to connect the piping and wiring.

INSTALL OUTDOOR UNIT

The outdoor units can be installed on the ground, on the roof, or mounted on a wall.

NOTE: Install the unit so that the coil does not face into prevailing winds. If this is not possible and constant wind winds above 25 mph are expected, use accessory wind baffle. See installation instructions provided with accessory kit. Wind baffles should also be used on all units with accessory low ambient temperature control.

Mounting on Ground

1.Mount unit on a solid level concrete pad.

2.If a heat pump is being installed, use a field- provided snow stand or ice rack where prolonged subfreezing temperatures or heavy snow occurs.

3.Position unit so water or ice from roof does not fall directly onto unit.

4.On cooling only units, an accessory stacking kit can be used when units are to be stacked. See installation instructions provided with the accessory kit.

Mounting on Roof

!CAUTION

PERSONAL INJURY AND/OR EQUIPMENT DAMAGE HAZARD

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

Be sure unit panels are securely in place prior to rigging.

1.Rig the unit. Keep the unit upright and lift using a sling. Use cardboard or padding under the sling, and spreader bars to prevent sling damage to the unit. See Fig 16. See Fig. 2 for center of gravity reference

2.Mount unit on a solid concrete pad or platform.

3.Isolate unit and piping from structure

4.If a heat pump is being installed, use a field- provided snow stand or ice rack where prolonged subfreezing temperatures or heavy snow occurs.

5.On cooling only units, an accessory stacking kit can be used when units are to be stacked. See installation instructions provided with accessory kit.

A07396

Fig. 16 - Lifting Unit with Sling

7

Page 6 Page 8
Page 7
Image 7
Carrier 40QNC, 40QNQ installation instructions Side Or Bottom Piping, Mounting on Ground, Mounting on Roof
Page 6 Page 8

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.
Top Page Image Contents