Carrier 40QNQ, 40QNC Installation, Complete Pre-installation Checks, Consider System Requirements

INSTALLATION

Complete Pre-installation Checks

1.Unpack Unit - Store the indoor and outdoor units in the original packaging until it is moved to the final site for in- stallation.

2.Inspect Shipment - Upon receipt of shipment, check the indoor and outdoor units for damage. If there is any dam- age, forward claim papers directly to the transportation company. Manufacturer is not responsible for damage in- curred in transit.

3.Inspect Parts Supplied With Units – Check all items against parts list (see Table 1). If any items are missing, noti- fy your distributor or Carrier office. To prevent loss or damage, leave all parts in original packages until installa- tion.

Consider System Requirements

1.Consult local building codes and NEC for special installa- tion requirements.

2.When deciding the location of the indoor and outdoor units, ensure that the piping run does not exceed the allowed dis- tances listed in Table 3.

3.Make sure the indoor and outdoor units are easily accessible to electrical power.

4.Allow sufficient clearances for airflow, wiring, refrigerant piping, and servicing the unit. See Fig. 3 and Fig. 4.

5.Condensate piping can be directed through the inside wall to an approved drain or straight outside.

INSTALL INDOOR UNIT

Plan the installation carefully before you begin.

1.Select indoor unit location.

a.A location that can bear the weight of the unit.

b.Do not install indoor units near a direct source of heat such as direct sunlight or a heating appliance.

c.Do not install units too close to humid conditions.

2.Install Mounting Plate

The factory supplied mounting plate will look like one of the following depending on the size of the unit.

		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. 7 - 40QNC, QNQ018,024 Mounting Plate
		27.1”	27.2”
		(688.3)	(690.9)
				8.4” (213)
			Measurements in ( ) = mm
				A09047

Fig. 8 - 40QNC, QNQ030, 036 Mounting Plate

Before mounting the 40QNC, QNQ unit on the wall mounting bracket, consider how the refrigerant piping will be routed.

Complete the following when installing the wall mounting bracket:

a.Carefully remove the mounting plate which is attached to the back of the unit by removing any screws and pushing at the indicated pressure points at the bottom of the unit.

Remove Screw

A09048

Fig. 9 - Mounting Plate Screw Location

b.The mounting plate should be located horizontally and level on the wall. All minimum spacing shown below should be maintained.

	5” (127) min.
12”	18”
(304.8)	(457.2)
min.	min.

Note: Numbers in ( ) = mm

Plumb line

A09049

Fig. 10 - Minimum Spacing

c.Install the wall mounting bracket in a location that is strong enough to withstand the weight of the unit.

d.If the wall is block, brick, concrete or similar material, drill 0.2 in (5 mm) diameter holes and insert anchors for the appropriate mounting screws.

e.Fasten the wall hanging bracket to the wall with 4 or more screw anchors through the holes near the outer edge of the bracket.

f.Install the wall hanging bracket flush to the wall, and ensure the bracket does not move.

3.Drill hole in wall for interconnecting piping, drain, and wir- ing

Refrigerant Line Routing

Piping for indoor units can be routed as shown in Fig. 11.

A08358A

Fig. 11 - Refrigerant Line Routing

Rear Piping

Determine the pipe hole position using the mounting plate as a template. Drill a 2-1/2 inch (63.5 mm) diameter hole in the wall at

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