Installation Instructions - Carrier Replacement Parts

38MHR
Outdoor Unit Single Zone Ductless System
Sizes 09 to 24
Installation Instructions
TABLE OF CONTENTS
NOTE: Read the entire instruction manual before starting the
installation.
PAGE
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 2
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SYSTEM REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DIMENSIONS − OUTDOOR . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CLEARANCES − OUTDOOR . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
OUTDOOR UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . 9
ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CONNECTION DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . 11
SYSTEM VACUUM AND CHARGE . . . . . . . . . . . . . . . . . . . 12
START−UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
OUTDOOR UNIT DIAGNOSTIC GUIDES . . . . . . . . . . . . . . 13
SAFETY CONSIDERATIONS
WARNING
!
Installing, starting up, and servicing air−conditioning equipment
can be hazardous due to system pressures, electrical components,
and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start−up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as coil cleaning. All other operations should be performed by
trained service personnel only.
When working on the equipment, observe the precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
a quenching cloth and a fire extinguisher nearby when brazing.
Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or
cautions included in literature and attached to the unit. Consult
local building codes and National Electrical Code (NEC) for
special requirements. Recognize safety information.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
!
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
This is the safety−alert symbol !! . When you see this symbol on
the unit and in instructions or manuals, be alert to the potential for
personal injury. Understand these signal words: DANGER,
WARNING, and CAUTION. These words are used with the
safety−alert symbol. DANGER identifies the most serious hazards
which will result in severe personal injury or death. WARNING
signifies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices which may result in
minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start−up.
2
PARTS LIST
Table 1—Parts List
PART NO.
PART NAME
QTY.
1
Outdoor unit
1
-
Literature package including installation instructions and warranty
1
-
Grommet to secure the outdoor unit (helps with vibration prevention during unit operation)
4
-
Drain Joint
1
-
Drain Hose
1
■ Outdoor
1
A150766
Fig. 1 - Parts List
NOTE:
− If the outdoor unit is higher than the indoor unit, prevent rain from flowing into the indoor unit along the connection pipe by making
a downward arc in the connection pipe before it enters the wall to the indoor unit. This ensures that rain drips from the connection
pipe before it enters the wall.
− Piping and the interconnecting wiring are field supplied.
− The illustration above is only a sketch. Different models may be slightly different.
The following units are covered in these installation instructions.
Table 2—Unit Sizes
Cooling Only
Heating Pump
SYSTEM TONS
BTUh
VOLTAGE - PHASE
OUTDOOR MODEL
0.75
9,000
115-1
38MHRC09A--1
1.00
12,000
115-1
38MHRC12A--1
0.75
9,000
208/230-1
38MHRC09A--3
1.00
12,000
208/230-1
38MHRC12A--3
1.50
18,000
208/230-1
38MHRC18A--3
2.00
24,000
208/230-1
38MHRC24A--3
0.75
9,000
115-1
38MHRQ09A--1
1.00
12,000
115-1
38MHRQ12A--1
0.75
9,000
208/230-1
38MHRQ09A--3
1.00
12,000
208/230-1
38MHRQ12A--3
1.50
18,000
208/230-1
38MHRQ18A--3
2.00
24,000
208/230-1
38MHRQ24A--3
3
SYSTEM REQUIREMENTS
Allow sufficient space for airflow and service of the unit. See Fig. 5 for the required minimum distances between the unit, walls or ceilings.
Piping
IMPORTANT: Both refrigerant lines must be insulated separately.
S Table 3 contains piping information for the product covered within this document.
Table 3—Piping and Refrigerant Information
System Size
Piping
9K (115V)
12V (115V)
9K (208-230V)
12K (208-230V)
18 (208-230V)
Min. Piping Length
ft. (m)
10(3)
10(3)
10(3)
10(3)
10(3)
10(3)
Standard Piping Length
ft. (m)
25(7.5)
25(7.5)
25(7.5)
25(7.5)
25(7.5)
25(7.5)
Max. outdoor-indoor
height difference (OU
higher than IU)
ft. (m)
33(10)
33(10)
33(10)
33(10)
33(10)
33(10)
Max. outdoor-indoor
height difference (IU higher ft. (m)
than OU)
33(10)
33(10)
33(10)
33(10)
33(10)
33(10)
Max. Piping Length with
no additional refrigerant
charge per System
(Standard Piping length)
ft. (m)
25(7.5)
25(7.5)
25(7.5)
25(7.5)
25(7.5)
25(7.5)
Total Max. Piping
Length per system
ft. (m)
82(25)
82(25)
82(25)
82(25)
98(30)
164(50)
Additional refrigerant
charge (between Standard
– Max piping length)
Oz/ft
(g/m)
0.161(15)
0.161(15)
0.161(15)
0.161(15)
0.161(15)
0.322(30)
Suction Pipe
(size - connection type)
In (mm)
3/8(9.52)
1/2(12.7)
3/8(9.52)
1/2(12.7)
1/2(12.7)
5/8(15.9)
Liquid Pipe
(size - connection type)
In (mm)
1/4(6.35)
1/4(6.35)
1/4(6.35)
1/4(6.35)
1/4(6.35)
3/8(9.52)
Type
R410A
R410A
R410A
R410A
R410A
R410A
Cooling Only Models
Charge Amount
Lbs (kg)
1.06(0.48)
1.30(0.59)
1.06(0.48)
1.30(0.59)
2.09(0.95)
2.65(1.2)
Heat Pump Models
Charge Amount
Lbs (kg)
1.76(0.8)
2.12(0.96)
1.76(0.8)
2.12(0.96)
3.30(1.5)
3.968(1.8)
Refrigerant Type
Refrigerant
24K (208-230V)
All outdoor units have an electronic expansion valve to manage the refrigerant flow of the fan coil connected.
Wiring
All wires must be sized per NEC (National Electrical Code) or
CEC (Canadian Electrical Code) and local codes. Use the Electrical
Data table MCA (minimum circuit amps) and MOCP (maximum
over current protection) to correctly size the wires and the
disconnect fuse or breakers respectively.
Per the caution note, only stranded copper conductors with a 600
volt rating and double insulated copper wire must be used. The use
of BX cable is not recommended.
Recommended Connection Method for Power and
Communication Wiring − Power and Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied
14/3 power/communication wiring from the outdoor unit to the
indoor unit consists of four (4) wires and provides the power for
the indoor unit. Two wires are high voltage AC power, one is
communication wiring and the other is a ground wire.
Recommended Connection Method for Power and
Communication Wiring (To minimize communication wiring
interference) Power Wiring:
The main power is supplied to the outdoor unit. The field supplied
power wiring from the outdoor unit to the indoor unit consists of
three (3) wires and provides the power for the indoor unit. Two
wires are high voltage AC power and one is a ground wire. To
minimize voltage drop, the factory recommended wire size is 14/2
stranded with a ground.
Communication Wiring:
A separate shielded stranded copper conductor only, with a 600
volt rating and double insulated copper wire, must be used as the
communication wire from the outdoor unit to the indoor unit.
Please use a separate shielded 16GA stranded control wire.
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Wires should be sized based on NEC and local codes.
S Use copper conductors only with a minimum 600 volt
rating and double insulated copper wire.
4
DIMENSIONS − OUTDOOR
Table 4—Dimensions and Weights
System Size
9K
(115)
Depth (D) in. (mm)
11.81(300)
Weight-Net lbs. (kg)
57.3(26)
12K
(115V)
21.85(555)
30.31(770)
11.81(300)
57.8(26.2)
9K
(208/230V)
21.85(555)
30.31(770)
11.81(300)
54.7(24.8)
12K
(208/230V)
21.85(555)
30.31(770)
11.81(300)
53.8(24.4)
18K
(208/230V)
21.81(554)
31.50(800)
13.11(333)
70.1(31.8)
24K
(208/230V)
27.64(702)
33.27(845)
14.29(363)
88.6(40.2)
Height (H) in. (mm)
21.85(555)
Width (W) in. (mm)
30.31(770)
Depth (D) in. (mm)
11.81(300)
Weight-Net lbs. (kg)
61.5(27.9)
System Size
9K
(115)
12K
(115V)
21.85(555)
30.31(770)
11.81(300)
65.0(29.5)
9K
(208/230V)
21.85(555)
30.31(770)
11.81(300)
57.1(25.9)
12K
(208/230V)
21.85(555)
30.31(770)
11.81(300)
60.6(27.5)
18K
(208/230V)
21.81(554)
31.50(800)
13.11(333)
94.6(42.9)
24K
(208/230V)
27.64(702)
33.27(845)
14.29(363)
105.2(47.7)
0.47(12) 21.85(555)
30.66(779) W3
H
19.17(487) W1
11.81(300) D
2.36(60)
13.07(322)
D2 D3
0.98(25) B1
2.76(70) W
11.73(298)
3.54(90) B2
30.31(770) W
2.42(61.5) A2
H1
Unit: inch(mm)
R0
.2
4(
6)
H2
3.66(93)
Heat
Pump
Width (W) in. (mm)
30.31(770)
11.26(286)
Cooling
Only
Height (H) in. (mm)
21.85(555)
0.47(12) A1
Fig. 2 - Sizes 9K and 12K
5
D1
H
0.47 (1 2)
21.81 (554)
DIMENSIONS − OUTDOOR (CONT)
20.24 (514)
13.11 (333)
D
W1
31.50 (800)
2.76 (7 0)
W2
2.43 (6 1.8)
B1
D3
H1
R0
3.37 (8 5.5)
B2
13.39 (340)
D2
12.24 (311)
12.80 (325)
2.36 (6 0)
4.17 (1 06)
W
. 79
(R
2
0.87 (2 2)
0)
A1
R 0.
24 (
R 6)
H2
2.43 (6 1.6)
A2
Fig. 3 - Size 18K
6
Unit: inch(mm)
D1
DIMENSIONS − OUTDOOR (CONT)
Unit: inch (mm)
Fig. 4 - Size 24K
7
CLEARANCES − OUTDOOR
A
Air-inlet
E
D
B
C
Air-outlet
A07894
Fig. 5 - Outdoor Unit Clearance
Table 5—Outdoor Unit Clearance Dimensions
UNIT
A
MINIMUM VALUE in. (mm)
24 (610)
B
24 (610)
C
24 (610)
D
4 (101)
E
4 (101)
NOTE: The outdoor unit must be mounted at least 2in. (50mm) above the maximum anticipated snow depth.
8
4. Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
5. Remove the flare nuts attached to the indoor and outdoor
units.
6. Install the correct size flare nut onto the tubing and make a
flare connection. Refer to Table 6 for the flare nut spaces.
Table 6—Flare Nut Spacing
INSTALLATION TIPS
Ideal installation locations include:
Outdoor Unit
S A location which is convenient to installation and not exposed to
strong winds.
S A location which can bear the weight of the outdoor unit and
where the outdoor unit can be mounted in a level position.
S A location which provides appropriate clearances (see Fig. 5).
S Do not install the indoor or outdoor units in a location with
special environmental conditions. For those applications, contact
your Ductless representative.
Bar
Yoke
Copper pipe
EQUIPMENT DAMAGE HAZARD
Clamp handle
Failure to follow this caution may result in equipment damage
or improper operation.
Red arrow mark
A150768
Fig. 8 - Flare Nut Spacing
7. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
8. Align the center of the pipes and/or service valve.
In regions with snowfall and cold temperatures, avoid
installing the outdoor unit in areas where it can be covered by
snow. If the outdoor unit is installed in areas where heavy
snow is expected, a field supplied ice or snow stand and/or
field supplied−installed wind baffle should be installed to
protect the unit from snow accumulation and/or blocked air
intake. Blocking the air intake may result in reduced airflow,
significantly reduced performance and damage to the
equipment.
Indoor unit tubing
Flare nut
Piping
A150769
Fig. 9 - Align Pipe Center
9. Connect both the liquid and gas piping to the indoor unit.
10. Tighten the flare nut using a torque wrench as specified in
Table 7.
11. Complete the installation.
Table 7—Tightening Torque
Strong
wind
PIPE DIAMETER In.(mm)
A07350
Fig. 6 - High Wind Installation
Ø1/4” (6.35)
Ø3/8” (9.52)
Ø1/2” (12.7)
Ø5/8” (15.88)
MAKE REFRIGERANT PIPING CONNECTIONS
(OUTDOOR UNIT)
IMPORTANT: Use refrigeration grade tubing ONLY. No other
type of tubing may be used. Use of other types of tubing will
void the manufacturer’s warranty.
TIGHTENING TORQUE
Ft-lb
N-m
10 to 13
13.6 to 17.6
24 to 31
32.5 to 42.0
37 to 46
50.1 to 62.3
50 to 60
67.7 to 81.3
Flare nut
Do not open the service valves or remove the protective caps from
the tubing ends until all connections are made.
Bend the tubing with bending tools to avoid kinks and flat spots.
Keep the tubing free of dirt, sand, moisture, and other
contaminants to avoid damaging the refrigerant system.
Avoid sags in the suction line to prevent the formation of oil traps.
Insulate each tube with a minimum 3/8−in. (10 mm) wall thermal pipe
insulation. Inserting the tubing into the insulation before making the
connections will save time and improve installation quality.
1. Remove the service valve cover, if provided with the unit.
2. Cut the pipe, with a pipe cutter, at 90 degrees (see Fig. 7).
3. Remove the service connection, if provided with the unit.
Oblique Roughness
Bar
Cone
CAUTION
DŽ
Min.
0.03(0.7)
0.04(1.0)
0.04(1.0)
0.08(2.0)
Handle
"A"
1. Use a rigid base to support the unit in a level position.
2. Locate the outdoor unit and connect piping and wiring.
90
Max.
0.05 (1.3)
0.06 (1.6)
0.07 (1.8)
0.09 (2.2)
Ø1/4”(6.35)
Ø3/8”(9.52)
Ø1/2”(12.7)
Ø5/8”(15.88)
OUTDOOR UNIT INSTALLATION
!
A (mm)
OUTER DIAM. (mm)
Copper tube
A150770
Fig. 10 - Tighten the Flare Nut
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break the flare nut depending on
installation conditions.
Burr
A150767
Fig. 7 - Cut the Pipe
9
INSTALL ALL POWER AND INTERCONNECTING
WIRING TO OUTDOOR UNITS
1. Mount the outdoor power disconnect.
2. Run the power wiring from the main box to disconnect per
NEC and local codes.
3. Remove the field wiring cover from the unit by loosening
the screws.
4. Remove the caps on the conduit panel.
5. Connect the conduit to conduit panel (see Fig. 11).
6. Properly connect both the power supply and control lines
to the terminal block per the connection diagram for the
appropriate unit capacity and voltage.
7. Ground the unit in accordance with NEC and local electrical
codes.
8. Use the lock nuts to secure the conduit.
9. Reinstall the field wiring cover.
DRAIN CONNECTIONS
Install drains must meet local sanitation codes.
Install the outdoor unit drain joint
Fit the seal into the drain joint, then insert the drain joint into the
base pan hole of the outdoor unit. Rotate 90_ to securely assemble
them. Connect the drain joint with an extension drain hose to avoid
condensate from draining off the outdoor unit during heating
mode.
Seal
CAUTION
!
Base pan
Failure to follow this caution may result in equipment
damage or improper operation.
S Be sure to comply with local codes while running wire
from indoor unit to outdoor unit.
S Every wire must be connected firmly. Loose wiring may
cause the terminal to overheat or result in unit
malfunction. A fire hazard may also exist. Therefore,
ensure all wiring is tightly connected.
S No wire should be allowed to touch the refrigerant
tubing, compressor or any moving parts.
S Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
S Connecting cable with the conduit shall be routed
through hole in the conduit panel.
Images are for illustration purposes only.
!
If water drains too slowly, it can freeze in the hose and flood
the unit.
40m
m)
CAUTION
In cold climates, ensure the drain hose is as vertical as
possible to ensure swift water drainage.
Terminal Block
7" (
Drain
joint
Fig. 12 - Drain Joint
Outdoor unit
r 1.5
Base pan hole
Seal
EQUIPMENT DAMAGE HAZARD
Ove
Drain joint
Conduit panel
Conduit
A07455
Fig. 11 - Field Wiring
10
ELECTRICAL DATA
Table 8—Electrical Data (Cooling Only)
Cooling Only
Outdoor Unit Size
9K
12K
9K
12K
18K
24K
Volts-PH-Hz
(115V)
(115V)
(208/230V)
(208/230V)
(208/230V)
(208/230V)
Max – Min*
Oper. Voltage
127-104
127-104
253-187
253-187
253-187
MCA
13
13
7
7
11
16
MOCP
20
20
15
15
15
25
RLA
9
9.5
4.5
4.5
7
11
FLA
0.6
0.6
0.4
0.4
0.5
0.6
Rated HP
0.054
0.054
0.054
0.054
0.065
0.068
Output
40
40
40
40
48
45
Power Supply
Compressor
Outdoor Fan Motor
253-187
Table 9—Electrical Data (Heat Pump)
Heat Pump
Outdoor Unit Size
9K
12K
9K
12K
18K
24K
Volts-PH-Hz
(115V)
(115V)
(208/230V)
(208/230V)
(208/230V)
(208/230V)
Max – Min*
Oper. Voltage
127-104
127-104
253-187
253-187
253-187
253-187
MCA
13
13
8
10
15
18
MOCP
20
20
15
15
20
25
RLA
9
9.5
5.5
6.8
10.5
12
FLA
0.7
0.7
0.4
0.4
0.6
0.6
Rated HP
0.043
0.043
0.043
0.043
0.065
0.085
Output
32
32
32
32
48
63
Power Supply
Compressor
Outdoor Fan Motor
*Permissible limits of the voltage range at which the unit will operate satisfactorily.
LEGEND
FLA - Full Load Amps
MCA - Minimum Circuit Amps
MOCP - Maximum Over-Current Protection
RLA - Rated Load Amps
CONNECTION DIAGRAMS
CONNECTING CABLE
OUTDOOR TO INDOOR
115-1-60
FIELD POWER SUPPLY
CONNECTING CABLE
OUTDOOR TO INDOOR
208/230-1-60
FIELD POWER SUPPLY
GND
L N
S
Indoor Unit Indoor
Power Supply Signal
High
115-1-60 Voltage
GND
Ground
9K and 12K 115V Indoor Unit
GND
L N
L N
S
Power to Indoor Main
Indoor Unit Signal Power Supply
High
115-1-60 Voltage 115-1-60
L1 L2
S
Indoor Unit Indoor
Power Supply Signal
High
208/230-1-60 Voltage
9K and 12K 115V Outdoor Unit
9K to 24K 230V Indoor Unit
GND
Ground
L1 L2
L1 L2
S
Main
Power to Indoor
Indoor Unit Signal Power Supply
High
208/230-1-60 Voltage 208/230-1-60
9K to 24K 230V Outdoor Unit
Fig. 13 - Connection Diagrams
Notes:
1. Do not use the thermostat wire for any connection between indoor and outdoor units.
2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.
11
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of pulling
a vacuum of 500 microns and a vacuum gage capable of accurately
measuring this vacuum depth. The deep vacuum method is the best
way to assure a system is free of air and liquid water (see Fig. 16).
SYSTEM VACUUM AND CHARGE
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Refrigerant tubes and the indoor coil should be evacuated using the
recommended 500 microns deep vacuum method. The alternate
triple evacuation method may be used if the procedure outlined
below is followed.
NOTE: Always break a vacuum with dry nitrogen.
Using Vacuum Pump
1. Completely tighten flare nuts A, B, C, D, connect the
manifold gage charge hose to a charge port of the low side
service valve (see Fig. 14).
2. Connect the charge hose to vacuum pump.
3. Fully open the low side of manifold gage (see Fig. 15).
4. Start the vacuum pump.
5. Evacuate using either the deep vacuum or triple evacuation
method.
6. After evacuation is complete, fully close the low side of
manifold gage and stop the vacuum pump operation.
7. The factory charge contained in the outdoor unit is good for
up to 25 ft. (8 m) of line length. For refrigerant lines longer
than 25 ft. (8 m), add refrigerant, up to the allowable length,
as specified in the System Requirements section.
8. Disconnect the charge hose from the charge connection of
the low side service valve.
9. Fully open service valves B and A.
10. Securely tighten the service valve caps.
Indoor Unit
Refrigerant
Outdoor Unit
A
Low Side
B
High Side
MICRONS
Never use the system compressor as a vacuum pump.
VACUUM TIGHT
TOO WET
TIGHT
DRY SYSTEM
1
2
3 4
5
MINUTES
6
7
A95424
Fig. 16 - Deep Vacuum Graph
Triple Evacuation Method
The triple evacuation method should only be used when the
vacuum pump is only capable of pumping down to 28 in. of
mercury vacuum and the system does not contain any liquid water.
Refer to Fig. 17 and proceed as follows:
1. Pump the system down to 28 in. of mercury and allow the
pump to continue operating for an additional 15 minutes.
2. Close the service valves and shut off the vacuum pump.
3. Connect a nitrogen cylinder and regulator to the system and
open until the system pressure is 2 psig.
4. Close the service valve and allow the system to stand for 1
hr. During this time, dry nitrogen can diffuse throughout the
system absorbing moisture.
5. Repeat this procedure as indicated in Fig. 17. The system
will then be free of any contaminants and water vapor.
C
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
Service Valve
A07360
WAIT
Fig. 14 - Service Valve
EVACUATE
Manifold Gage
BREAK VACUUM WITH DRY NITROGEN
500 microns
Charge hose
LEAK IN
SYSTEM
0
D
Low side valve
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
High side valve
WAIT
Charge hose
EVACUATE
Vacuum pump
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACUUM)
Low side valve
RELEASE CHARGE INTO SYSTEM
A07361
Fig. 15 - Manifold
A95425
Fig. 17 - Triple Evacuation Method
Final Tubing Check
IMPORTANT: Check to be certain factory tubing on both the
indoor and outdoor unit has not shifted during shipment. Ensure
tubes are not rubbing against each other or any sheet metal. Pay
close attention to the feeder tubes, making sure wire ties on feeder
tubes are secure and tight.
12
START−UP
OUTDOOR UNIT
Test Operation
Perform a test operation after completing a gas leak and electrical
safety check. See the indoor unit installation instructions and
owner’s manual for additional start up information.
1. Are there unusual noises or vibrations during operation?
Explain the Following Items to the Customer (with the aid of
the Owner’s Manual):
1. Explain care and maintenance.
2. Present the installation instructions to the customer.
SYSTEM CHECKS
1. Conceal the tubing where possible.
2. Make sure that the drain tube slopes downward along its
entire length.
3. Ensure all tubing and connections are properly insulated.
4. Fasten the tubes to the outside wall, when possible.
5. Seal the hole through which the cables and tubing pass.
OUTDOOR UNIT DIAGNOSTIC GUIDES
For ease of service, the systems are equipped with a diagnostic code display LEDs on both the indoor and outdoor units. The outdoor
diagnostic is displayed on the outdoor unit microprocessor board.
There may be a few error codes displayed in the indoor unit that might relate to the outdoor unit’s problems. If possible, always check the
diagnostic codes displayed on the indoor unit first.
The diagnostic codes displayed on the outdoor units are listed on Table 10.
Table 10—Unit Diagnostic Guides
DISPLAY
E1
F0
LED STATUS
Communication malfunction between indoor and outdoor units.
Protection of over-current
F1
F2
F3
F4
F5
Open circuit or short circuit of outdoor ambient temperature sensor T4
Open circuit or short circuit of condenser coil temperature sensor T3
Open circuit or short circuit of Compressor discharge temperature sensor T5
Outdoor unit EEPROM error
Outdoor fan speed has been out of control
P0
P1
P2
P3
P4
IPM malfunction
Over voltage or over low voltage protection
High temperature protection of compressor top
Outdoor low temperature protection
Inverter compressor drive error
P7
J0
J1
J2
J3
Outdoor IGBT temperature sensor error
High temperature protection of indoor coil in heating
Outdoor temperature protection of outdoor coil in cooling
Discharge temperature protection
Protection of active PFC module
J4
J5
J6
J8
Communication error between control board and IPM board
High-pressure switch protection
Low-pressure switch protection
AC voltage protection
For additional diagnostic information, refer to the Service Manual.
13
Copyright 2016 CAC/BDP. S 7310 W. Morris St. S Indianapolis, IN 46231
Edition Date: 11/16
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
14
Catalog No: IM-38MHR-01
Replaces: NEW
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