Carrier 38UQZ016 Manual

Carier is participating in
the Eurovent Certification
Programme. Products are
as listed in the Eurovent
Directory of Certified
Products.
38UQZ 016-020-024
40ALZ 016-020-024
Split-System Air-to-Air
Heat Pumps
Installation, Operation and Maintenance Instructions

2
CONTENTS
START-UP CHECK LIST.............................................................................................................................................................. 3
PHYSICAL DATA .......................................................................................................................................................................... 4
ELECTRICAL DATA ................................................................................................................................................................... 4
DIMENSIONS ................................................................................................................................................................................. 5
Service clearance .............................................................................................................................................................................. 7
Centre of gravity coordinates.......................................................................................................................................................... 8
Weight distribution .......................................................................................................................................................................... 9
FAN PERFORMANCE CURVES .............................................................................................................................................10
PRELIMINARY CHECKS.......................................................................................................................................................... 13
Check equipment received ............................................................................................................................................................ 13
SAFETY CONSIDERATIONS................................................................................................................................................... 13
UNIT TRANSPORT, LIFTING AND HANDLING............................................................................................................... 14
UNIT INSTALLATION ............................................................................................................................................................... 14
38UQZ outdoor units.....................................................................................................................................................................14
40ALZ indoor units........................................................................................................................................................................ 16
ELECTRICAL CONNECTIONS ............................................................................................................................................... 19
REFRIGERANT LINE CONNECTIONS................................................................................................................................ 20
Connection between units ............................................................................................................................................................. 20
Refrigerant piping design ..............................................................................................................................................................21
Pipe diameter calculation procedure............................................................................................................................................21
REFRIGERANT CHARGE ....................................................................................................................................................... 23
OIL RECHARGE ......................................................................................................................................................................... 24
START-UP...................................................................................................................................................................................... 24
Initial checks.................................................................................................................................................................................... 24
UNIT COMPONENTS................................................................................................................................................................. 25
DESCRIPTION OF UNIT PROTECTION DEVICES.......................................................................................................... 25
OPERATING LIMITS ................................................................................................................................................................. 25
GENERAL MAINTENANCE.................................................................................................................................................... 26
Servicing recommendations .......................................................................................................................................................... 26
Compressor replacement............................................................................................................................................................... 27
OPTIONS/ACCESSORIES ......................................................................................................................................................... 27
FINAL RECOMMENDATIONS................................................................................................................................................ 28
TROUBLESHOOTING CHART............................................................................................................................................... 28

3
START-UP CHECK LIST Start up date: ..................................................................
Equipment sold by: ...................................................................................................................................... Contract No: .....................................................
Installed by: .................................................................................................................................................... Contract No: .....................................................
Site address: .......................................................................................................................................................................................................................................
Equipment type and serial No: 38UQZ ................................................................................................................................................................................
40ALZ..................................................................................................................................................................................
ELECTRICAL DATA:
Supply voltage Ph 1: . ........................ Volts Ph 2: .................... Volts Ph 3 .......................Volts
Nominal voltage: .............................................. Volts % network voltage: ..........................................................................................................................
Current draw Ph 1: .................................... Amperes Ph 2: ............................... Amperes Ph 3: .......................................... Amperes
Control circuit voltage: ................................... Volts Control circuit fuse: ............................................................................................. Amperes
Main circuit breaker rating: ..........................................................................................................................................................................................................
PHYSICAL DATA:
Outdoor unit 38UQZ: Indoor unit 40ALZ:
Entering air temp.: .....................................................................oC Entering air temp.: ......................................................... oC
Leaving air temp.: ......................................................................oC Leaving air temp.: .......................................................... oC
Pressure drop (air): .........................................................................kPa Pressure drop (air): ......................................................kPa
Discharge air pressure: ..................................................................... Pa Discharge air pressure: .................................................. Pa
Fan motor input: Ph. 1: .................................................Volts Fan motor input: Ph. 1: ......................................Volts
Ph. 2: .................................................Volts Ph. 2: ......................................Volts
Ph. 3: .................................................Volts Ph. 3: ......................................Volts
SAFETY DEVICE SETTING 38UQZ UNIT:
High pressure switch:cut-out: ............................................... kPa cut-in: ...............................................kPa
Low pressure switch: cut-out: ............................................... kPa cut-in: ...............................................kPa
Step controller: cut-out 1st step: ....................................oC cut-in 1st step: ................................... oC
cut-out 2nd step: ...................................oC cut-in 2 nd step: ................................ oC
Oil level: ..............................................................................................................................................................................................................................................
Oil visible in sight glass? ................................................................................................................................................................................................................
ACCESSORIES
Commissioning engineer (name): ...............................................................................................................................................................................................
Customer agreement
Name: .......................................................................................... Date: ......................................................................................................................
Remarks:
Note: Complete this start-up list at the time of installation

4
Table 1 - Physical data
Indoor unit 40ALZ 016 020 024
Outdoor unit 38UQZ 016 020 024
Cooling capacity* kW 43.3 53.5 67.0
Heating capacity** kW 45.5 57.5 78.4
Refrigerant charge (R-407C)*** kg 7.8 x 2 8.4 x 2 12.8 x 2
Outdoor unit 38UQZ 016 020 024
Weight kg 480 555 590
Compressor Reciprocating
Quantity 2 2 2
Oil charge (each) l 4.0 4.0 4.0
Oil type POE-160 PZ
Outdoor heat exchanger Copper tubes, pre-treated aluminium fins
Face area m22.29 x 2 2.29 x 2 2.29 x 2
Number of rows ... fins/m 2 ... 472 2 .. 555 3 ... 555
Test pressure bar 30 30 30
Fan Axial
Quantity 2 2 2
Nominal air flow l/s 5850 11200 10700
Refrigerant line diameters inch
Suction line 1-1/8 1-1/8 1-1/8
Liquid line 5/8 5/8 5/8
Indoor unit 40ALZ 016 020 024
Weight kg 290 305 325
Refrigerant-air heat exchanger Copper tubes, pre-treated aluminium fins
Face area m21.06 1.06 1.36
Number of rows … fins/m 4...555 6...472 6...555
Test pressure bar 30 30 30
Fan Two, double-inlet centrifugal
Nominal air flow l/s 2820 3120 3370
Air flow range l/s 2390-3250 2650-3600 2860-3880
Available static pressure (dry/wet coil) Pa 160/120 180/120 210/160
Air filter Class M1, washable
Quantity 2 2 2
Width x height mm 632 x 615 632 x 615 632 x 780
* Based on an outdoor air temperature of 35°C db and an indoor air entering temperature of 19°C wb and 27°C db.
** Based on an outdoor air temperature of 6°C wb and an indoor air entering temperature of 21°C db.
*** The refrigerant charge is for the complete system (38UQZ and 40ALZ), but excludes the refrigerant connection lines.
Table 2 - Electrical data
38UQZ-40ALZ 016 020 024
Nominal supply V-ph-Hz 230-3-50 400-3-50 230-3-50 400-3-50 230-3-50 400-3-50
Voltage range V 207-253 360-440 207-253 360-440 207-253 360-440
Nominal power input kW
Cooling* 19.77 19.77 27.50 27.50 33.90 33.90
Heating** 17.07 17.07 24.50 24.50 32.00 32.00
Nominal current drawn A
Cooling* 57.95 33.50 77.19 44.62 95.36 56.12
Heating** 52.47 30.33 68.42 39.55 91.17 52.70
Effective power input kW
Cooling* 18.64 18.64 26.36 26.36 32.50 32.50
Heating** 15.94 15.94 23.36 23.36 30.60 30.60
Effective current drawn A
Cooling* 54.64 31.59 73.99 42.77 91.42 52.84
Heating** 49.00 28.32 65.24 37.71 87.18 50.39
Starting current A 205.2 118.6 288.6 166.8 358.3 207.1
Maximum power input kW
Cooling*** 22.92 22.92 30.10 30.10 37.97 37.97
Heating+ 21.06 21.06 29.60 29.60 40.27 40.27
Maximum current drawn A
Cooling*** 65.60 37.92 83.39 48.50 105.36 60.90
Heating+ 60.55 35.00 81.62 47.18 110.93 64.12
* Based on an outdoor air temperature of 35°C db and an indoor air entering temperature of 19°C wb and 27°C db.
** Based on an outdoor air temperature of 6°C wb and an indoor air entering temperature of 21°C db.
*** Based on an outdoor air temperature of 46°C db.
+ Based on an indoor air temperature of 24°C db and an outdoor air temperature of 18°C wb.

5
1Unit support (6 fixing points, ø 19 mm)
2Suction line connecction, ø 1-1/8”
3Liquid line connection, ø 5/8”
4Cable entry
5Main disconnect switch
6Control box
7Front access panel
8Side acces panel (both sides)
9Heat echangers
0Compressors
!Fans
Fig. 1 - 38UQZ dimensions, mm
Plan view
When designing an installation, always use up-to-date drawings, available from your local Carrier office.
Side view
Rear view

6
155
B
155
680
196 350 134
C
C
405
300
405
71 252
108 307 265
99
82 80 70
25
50 605
55
1080
252 71
540
307 265
108
A
Fig. 2 - 40ALZ dimensions, mm
Access panel
Outlet
Hot water coil connections
(accessory/option)
Air
discharge
Alternative drain ø 23
See detail A
Front and right-side view
Detail A
Electrical connections
Refrigerant line
connections
Access panel
Outlet
Hot water coil connections
(accessory/option)
Air
inlet
Standard drain ø 23
See detail A
Rear and left-side view
Note: The air discharge can be changed
from horizontal to vertical (see page 17).
When designing an installation, always use up-to-date drawings, available from your local Carrier office.
Dimensions, mm
40ALZ A B C
016, 020 2125 1815 507
024 2625 2315 757

7
Fig. 3 - Service clearance, mm
38UQZ 016-024
* Required service space for the removal of the air filter and the fans (in case of a breakdown). Clearance should be the same as the unit width.
1000
500
500
(*)
600
(*)
600
40ALZ (all sizes)
Air filter removal Air filter removal
500

8
Fig. 4 - Centre of gravity coordinates (mm - approx.)
38UQZ 016-024
40ALZ (all sizes)
3
38UQZ 016 020 024
XG* 1060 1060 1070
YG* 300 340 380
ZG* 280 320 400
* Measured from point 3
40ALZ 016 020 024
XG* 1620 1625 1870
YG* 230 230 230
ZG* 520 520 520
* Measured from point 3

9
Fig. 5 - Weight distribution (kg - approx.)
38UQZ 016-024
40ALZ
Air filters
3
1
5
4
6
Point 38UQZ
016 020 024
1180 210 221
2180 210 221
329 33 36
429 33 36
531 34 38
631 34 38
Point 40ALZ
016 020 024
143 46 53
247 51 53
3100 104 110
4100 104 109

10
FAN PERFORMANCE CURVES
40ALZ 016 (standard)
Available static pressure, Pa
Air flow, l/s
Power input, kW
40ALZ 016 (high-pressure option)
Available static pressure, Pa
Air flow, l/s
Power input, kW
Indoor fan speed
Curve Pulley position Standard, r/s High-pressure option, r/s
0 Closed 17.78 21.42
1 1 17.21 20.74
2 2 16.51 19.89
3 3 15.88 19.14
4 4 15.23 18.35
Factory setting 2 16.51 19.89