40QAC/38HDR -- 40QAQ/38QRR

Refrigerant Charge

The 38HDR and 38QRR units can be matched with multiple outdoor units and thus additional charge might be required when matched with the 40QAC or 40QAQ units.

Table 5 – Additional Charge

 

Additional Charge lb. (kg.)

 

Unit Size

38HDR

38QRR

018

0.7 (0.32)

0.7 (0.32)

024

1.3 (0.59)

0.8 (0.36)

030

1.4 (0.64)

0

036

0.2 (0.1)

0.5 (0.23)

048

0.2 (0.1)

0

060

0.5 (0.23)

0

Note:The above additional charge is required amount for line lengths up to 25 ft (7.6 m). For line lengths exceeding 25 ft (7.6 m), additional charge will be required. Refer to the Duct Free Splits Long Line Guide.

Metering Device

The 40QAC and 40QAQ units use an accurator or a TXV as shown in Table 6.

Table 6 – Accurator Sizes

Unit Size

Cooling Only

Heat Pumps

40QAC

40QAQ

38QRR

 

018

TVX

49

40

024

TVX

55

43

030

TVX

65

55

036

TVX

70

63

048

TVX

80

73

060

TVX

TXV

80

NOTE: Pistons are supplied with either the indoor or outdoor units.

Power and Connecting Cables - Field Supplied

Power:

SThe main power is supplied to both the indoor and outdoor

units.

SConsult local building codes, NEC (National Electric Code) or CEC (Canadian Electric Code) for any special requirements.

SUse Table 7 for the electrical requirements for the outdoor units and Table 8 for the indoor units to correctly size the cables and disconnect switches.

Control Wiring

Thermostat wires should be used for control wiring between the indoor and outdoor units. A two conductor cable is required for the cooling only units and a seven conductor cable is required on heat pumps. 18 AWG is recommended for any length up to 200 ft (61.0 m).

User Interface - Finished Goods Accessory

Any of the following three thermostats can be used depending on the type of system on hand and the desired features. Refer to Table 9 to select the proper thermostat.

Table 7 – 38HDR / QRR Electrical Requirements

 

 

 

38HDR

 

38QRR

UNIT SIZE

V---PH ---Hz

MIN CKT AMPS

 

FUSE/HACR BKR

MIN CKT AMPS

FUSE/HACR BKR AMPS

 

 

 

AMPS

 

 

 

 

 

 

 

 

 

 

 

 

 

018

208/230---1---60

12.1

 

20

12.1

20

 

 

 

 

 

 

 

024

208/230---1---60

17.7

 

25

18.8

30

 

 

 

 

 

 

 

030

208/230---1---60

19.1

 

30

17.5

30

 

 

 

 

 

 

 

 

208/230---1---60

19.1

 

30

20.9

30

036

 

 

 

 

 

 

208/230---3---60

13.0

 

20

14.1

20

 

460---3---60

7.9

 

15

7.9

15

 

 

 

 

 

 

 

 

208/230---1---60

26.4

 

40

34.6

50

048

 

 

 

 

 

 

208/230---3---60

17.9

 

25

22.4

30

 

 

 

 

 

 

 

 

460---3---60

8.4

 

15

10.0

15

 

 

 

 

 

 

 

 

208/230---1---60

34.5

 

60

34.5

60

060

 

 

 

 

 

 

208/230---3---60

21.5

 

30

23.6

40

 

 

 

 

 

 

 

 

460---3---60

10.6

 

15

10.6

15

 

 

 

 

 

 

 

Table 8 – 40QAC / QAQ Electrical Requirements

UNIT

VOLTAGE

 

40QAC

 

40QAQ

V---Ph---60 Hz

MCA

 

MOCP

MCA

 

MOCP

 

 

 

 

 

 

 

 

 

 

 

024

208/230---1

0.63

 

15.0

9.29

 

15.0

 

 

 

 

 

 

 

 

036

208/230---1

1.60

 

15.0

17.70

 

20.0

 

 

 

 

 

 

 

 

048

208/230---1

2.00

 

15.0

23.80

 

25.0

 

 

 

 

 

 

 

 

060

208/230---1

3.30

 

15.0

28.70

 

30.0

 

 

 

 

 

 

 

 

Table 9 – Thermostat Selection

 

 

 

System Type

 

 

Model Number

Cooling Only & HP

Cooling Only

Cooling Only

 

 

53DFS250---SL

53DFS250---FS

53DFST2---NP

Features

7 Day Programmable

---

5+1+1 Day Programmable

---

---

 

 

Remote Room Sensor

 

 

Dry Contact Equipped

---

8

Page 8
Image 8
Carrier 40QAC installation instructions Power and Connecting Cables Field Supplied, User Interface Finished Goods Accessory

40QAC specifications

The Carrier 40QAC is a standout product in the realm of commercial air conditioning systems. This air-cooled chiller is designed to meet a variety of cooling needs while ensuring energy efficiency and reliability. One of the most notable features of the 40QAC is its advanced scroll compressor technology, which is engineered to provide consistent performance with reduced noise levels. This makes it an ideal choice for applications where minimizing sound pollution is crucial, such as in urban settings or near sensitive environments.

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