Carrier 38mvc018 3 Service Manual

40MVC / 38MVC
40MVQ / 38MVQ
Service Manual
High --- Wall Duct Free Split System
Sizes 009 To 024
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1.........................
STANDARD FEATURES AND ACCESSORIES 2...........
SPECIFICATIONS -- COOLING ONLY 3..................
SPECIFICATIONS -- HEAT PUMP UNITS 4...............
DIMENSIONS 5......................................
SERVICE VALVE LOCATIONS 5........................
CLEARANCES 6.....................................
SYSTEM OPERATING ENVELOPE...

2
MODEL NUMBER NOMENCLATURE
OUTDOOR UNIT
38 MVC 3 --- 01
--- 018
A i r --- C o o l e d C o n d e n s e r
Unit Type
MVC--- C o o l i n g O n l y
MVQ--- H e a t P u m pVo ltage
1--- 1 1 5 --- 1 --- 6 0
3--- 208/230 --- 1 --- 60
Nominal Capacity
009--- 3 / 4 T o n
012--- 1 T o n
018--- 1 --- 1 / 2 T o n
024--- 2 T o n s
INDOOR UNIT
40 MVC 3 --- 01
--- 018
Fan Coil Unit
Unit Type
MVC--- C o o l i n g O n l y
MVQ--- H e a t P u m pVo ltage
------ 3 0 V D C
1--- 1 1 5 --- 1 --- 6 0
3--- 208/230 --- 1 --- 60...

3
STANDARD FEATURES AND ACCESSORIES
Ease Of Installation
Mounting BracketsS
Low Voltage ControlsS
Comfort Features
Microprocessor ControlsS
Wireless Remote ControlS
Automatic Air SweepS
Air Direction ControlS
Auto Restart FunctionS
Cold Blow Protection On Heat PumpsS
Tu r b o M o d e O n S i z e s 9 K a n d 1 2 KS
Auto Changeover On Heat PumpsS
Energy Saving Features
Sleep ModeS
Stop/Start TimerS
Safety And Reliability
3MinuteTimeDelayForCompressorS
Over Current Protection For CompressorS
Indoor Coil...

4
SPECIFICATIONS -- COOLING ONLY UNITS
System
System Model Number5 3 M V C 0 0 9 --- --- --- 15 3 M V C 0 1 2 --- --- --- 15 3 M V C 0 1 2 --- --- --- 35 3 M V C 0 1 8 --- --- --- 3
System Voltage115 V115 V208/230208/230
Control Voltage0 --- 1 2 P u l s e D C0 --- 1 2 P u l s e D C0 --- 1 2 P u l s e D CPulse DC
Capacity (Btuh)9000120001200018000
SEER13.013.013.013.0
Refrigerant
Refrigerant TypeR --- 410A
Design Pressure (PSIG)550550550550
Metering DeviceCapillary Tube in Outdoor Unit
Charge...

5
SPECIFICATIONS -- HEAT PUMP UNITS
System
System Model Number5 3 M V Q 0 0 9 --- --- --- 15 3 M V Q 0 1 2 --- --- --- 15 3 M V Q 0 1 2 --- --- --- 35 3 M V Q 0 1 8 --- --- --- 3
System Voltage115 V115 V208/230208/230
Control Voltage0 --- 1 2 P u l s e D C0 --- 1 2 P u l s e D C0 --- 1 2 P u l s e D CPulse DC
Capacity (Btuh)9000120001200018000
SEER13.013.013.013.0
HSPF7.77.77.77.7
Refrigerant
Refrigerant TypeR --- 410A
Design Pressure (PSIG)550550550550
Metering DeviceCapillary Tubes in Outdoor Unit...

6
DIMENSIONS -- INDOOR
A07336
Model SizeW
in. (mm)H
in. (mm)D
in. (mm)Weight lb (kg)
9K32.09 (815)11.02 (280)7.68 (195)24.2 (11)
12K35.67 (906)11.26 (286)9.25 (235)33.0 (15)18K49.21 (1250)12.80 (325)9.06 (230)55.0 (25)
24K49.21 (1250)12.80 (325)9.06 (230)55.0 (25)
DIMENSIONS -- OUTDOOR
L1
L2
35
W
H
Air Flow
L3
A07337
Model SizeW
in. (mm)H
in. (mm)L1
in. (mm)L2
in. (mm)L3
in. (mm)Weight lb (kg)
Cooling OnlyWeight lb (kg)
Heat Pumps
9K30.71 (780)21.26 (540)21.61 (549)11.81 (300)10.87 (276)77.0 (35)79.2...

7
CLEARANCES -- INDOOR
6 (0.15m) min.
5

(0.13m)
min.
6
5
(0.13m)
min.
(1.8m)
A07891
Fig. 2 – Indoor unit clearance
CLEARANCES -- OUTDOOR
A
DB
Air-outlet
Air-inlet
C
E
A07894
UNIT9k and 12k in. (mm)18k and 24k in. (mm)A24 (610)24 (610)B24 (610)36 (914)C24 (610)24 (610)D4 (102)12 (305)E12 (305)12 (305)
Fig. 3 – Outdoor Unit Clearance
38/40MVC, MVQ 

8
SYSTEM OPERATING ENVELOPE
53MVC/MVQ System Operating Envelope Chart
40 50 60 70 80 90 100 110 120
-10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140
Outdoor Temperature (ºF)
Indoor Temperature (ºF)
0 5
10
15
20
25 30 35 40
45
50
55
60 -40-35-30-25-20-15-10-5 0 5 1015202530354045505560
Outdoor Temperature (ºC)
Indoor Temperature (ºC)
      Cooling
   Continuous
    Operation
      Heating
   Continuous
    Operation
85º
F
62ºF
55º75ºF
55ºF
5ºF
80ºF
125º
Use low ambient control if the unit will operate...

9
WIRING
The main power is supplied to the outdoor unit. The field supplied connecting cable from the outdoor unit to indoor unit consists of four
wires and provides the power for the indoor unit as well as the communication signal between the outdoor unit and indoor unit.
Voltage drop on the connecting cable should be kept to a minimum. Use cable size and max length below:
18 AWG50 ft. (16 m)
16 AWG100 ft. (33 m)
CONNECTION DIAGRAMS
CONNECTING CABLE CONNECTING CABLECONNECTING CABLE
CONTROL
CONTROL...

10
WIRING DIAGRAMS
Fig. 6 – Wiring Diagram 38MVC009-- -- --1 W/ 40MVC009-- -- --1
38/40MVC, MVQ