BLD2021-0664_Manufacturer_Specifications_and_Installation_Instructions_5.13.2021_2.43.42_PM_2195864Installation Instructions
2_
Fig. 1 - Indoor Unit, Outdoor Unit, and Remote Control
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
PARTS LIST
DIMENSIONS - INDOOR
DIMENSIONS - OUTDOOR
CLEARANCES -INDOOR
CLEARANCES -OUTDOOR
SYSTEM REQUIREMENTS
INSTALLATION
INSTALL INDOOR UNIT
INSTALL OUTDOOR UNIT
ELECTRICAL DATA
START-UP
TROUBLESHOOTING
UNIT OPERATION AND SAFETY HAZARD
1
2
3
4
6
6
6
8
8
11
15
19
22
Failure to follow this warning could result in personal injury or
equipment damage.
Puron refrigerant systems operate at higher pressures than
standard R-22 systems. To avoid damage to the unit or
possible personal injury, do not use R-22 service equipment or
components on Puron refrigerant equipment.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory -authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have a fire
extinguisher available. Read these instructions thoroughly and follow
all warnings or cautions included in the unit literature and on labels
attached to the unit. Consult local building codes and current editions
of the National Electrical Code ( NEC ) NFPA 70. In Canada, refer to
current editions of the Canadian electrical code CSA 22.1.
Recognize safety information. 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.
PARTS LIST
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
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.
ENVIRONMENTAL HAZARD
Failure to follow this caution may result in environmental
pollution.
Remove and recycle all components or materials (i.e. oil,
refrigerant, etc.) before unit final disposal.
INSTALLATION
IMPORTANT: Effective January 1, 2015, all split systems and
packaged air conditioners must be installed pursuant to applicable
regional efficiency standards issued by the Department of Energy.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts have sharp edges or burrs, Use care and wear
appropriate protective clothing and gloves when handling
parts.
PERSONAL INJURY AND EQUIPMENT DAMAGE
HAZARD
Failure to follow this caution may result in personal injury
and / or equipment damage.
DO NOT operate the unit without a filter or with grille
removed.
These instructions cover the installation and the start-up of the
systems listed in Table 1.
Table 1— Matched Systems
SYSTEM
TYPE
NOMINAL
CAPACITY
kBTU/Hr
OUTDOOR UNIT
INDOOR UNIT
18
24AHA418AO03
124ANS018000
40MKCB18F--3
24
24AHA424AO03
124ANS024000
40MKCB34F--3
Cooling
30
24AHA43OA003
124ANS030000
40MKCB34F--3
Only
34
24AHA436A003/5/6
124ANS036000
40MKCB34F--3
48
24AHA448A003/5/6
124ANSO48000
40MKCB54F--3
54
24AHA460A003/5/6
124ANS060000
40MKCB54F--3
30
25HHA43OA003
224ANS030000
40MKOB36C--3
Heat
Pump
36
25HHA436A003/5/6
224ANS036000
40MKOB36C--3
48
25HHA448A003/5/6
224ANSO48000
40MKOB48C--3
TXV Kit
The under ceiling/floor console type unit and horizontal discharge unit
(24AHA/124ANS and 25HHA4/224ANS) installation would not be
complete without the addition of the TXV kit. This can be found in
the packaging of the indoor unit. If you do not have this kit, order the
kit and install the outdoor and indoor units when this is available.
Below are figures that show how the kit looks and where it is included
within the indoor unit packaging.
pipe
Gas pipe
Fig. 2 - TXV Kit
At50289
A150297
Fig. 3 - TXV Kit (inside indoor unit's packaging)
Indoor Unit
The following items are included with the indoor unit:
Table 2 — Indoor Units Parts List
NAME OF PART
OTY.
USAGE
Owner's Manual
1
Guide for the homeowner
Warranty card
1
Warranty information
Installation instructions
1
Guide to install the unit
Clamp filter
2
For conforming to EMC standards
on connecting wires
Remote Controller
1
Controls the indoor unit
Remote Controller Holder
1
Holds the remote controller on
the wall
Tapped Screw
2
Used to fix the remote controller
holder
Battery
2
Powers the remote controller
Strain Relief Bracket
1
To affix strain relief to hold wires
in place
Screws
4
To affix strain relief bracket
PA
Outdoor Unit
The following items are included with the outdoor unit:
CONNECTOR LINE SET
(BY OTHERS) (BY OTHERS)
FILTER
/DRIER
PISTON CAP FILTER LINE SET FLARE /DRIER (BY OTHERS)
CONNECTOR
METERED FLOW
HEATING
Fig. 5 - 25HHA4/224ANS
A09536
Fig. 4 - 24AHA/124ANS Table 3 — Outdoor Unit Parts Checklist
DIMENSIONS - INDOOR
Unit:
Bracket:
W
A09537
MODEL
FILTER
PISTON
PISTONS
FLARE
DRIER
CAP
CONNECTOR
24AHA4/124ANS
Y
25HHA4/224ANS
Y
Y
✓
Y
Hook
A0150266
Fig. 6 - 440MKCB**F, 40MKQB**F Unit and Bracket Dimensions
Table 4 — Dimensions Indoor
INDOOR UNIT SIZE
BTU/Hr
HEIGHT (H)
in (mm)
WIDTH (W)
in (mm)
DEPTH (D)
in (mm)
OPERATING WEIGHT
lb (kg)
AC
18K
9.3(235)
42.0 (1068)
26.6 (675)
59.7 (27.1)
24K - 34K
9.3(235)
65.0 (1650)
26.6 (675)
91.9 (41.7)
48K-54K
9.3(235)
65.0 (1650)
26.6 (675)
98.8 (44.8)
HP
30K - 48K
9.3(235)
65.0 (1650)
26.6 (675)
98.8 (44.8)
Bracket
18K AC
38.7 (983)
8.7(220)
24K - 54K AC/HP
61.6 (1565)
8.7(220)
3
DIMENSIONS - OUTDOOR
U
AIR
Im
Fig. 7 - Outdoor Unit Dimensions
NOTE:
• Center of Gravity
• All dimensions are in "inches" unless noted.
Table 5 — Dimensions Outdoor
M
FIELD POWER SUPPLY CONN.
HOLE SIZES PROVIDED:
t 0 7
/8. HOLE WITH
0 1 1/8" KNOCKOUT AND
iONS 0 1 3/8" KNOCKOUT
UNIT SIZE
MINIMUM MOUNTING PAD DIMENSIONS
18,24
23" x 42"
30,36,48, 60
24" x 50"
Table 6 - Dimensions (ACs)
ELECTRICAL
CHARACTERISTICS
M
0
O
O M
C.4
N
m
N N
Table 7 - Dimensions SI (ACs)
ELECTRICAL
OPERATING
SHIPPING
SHIPPING
UNIT
SERIES
A
B
C
D
E
F
G
H
J
K
L
M
N
P
CHARACTERISTICS
WEIGHT(KG)
WEIGHT(KG)
DIMENSIONS (L x W x H)
124ANS018/24AHA418
0
X
0
0
0
790.4
938.0
370.0
406.0
595.5
436.0
587.6
712.2
330.2
168.3
285.8
15.9
73.0
148.2
66.2
75.3
1090.2 X 457.7 X 866.7
124ANS024/ 24AHA424
0
X
0
0
0
790.4
938.0
370.0
406.0
595.5
436.0
587.6
712.2
355.6
171.5
295.3
19.1
73.0
148.2
67.1
76.2
1090.2 X 457.7 X 866.7
124ANS030/ 24AHA430
0
X
0
00
942.8
1130.0
433.0
469.0
774.5
499.0
740.0
864.6
347.7
206.4
403.2
19.1
86.0
161 .2
83.0
96.6
1282.7 X 520.7 X 1019A
124ANS036/24AHA436
0
X
0
X
X
942.6
1130 .0
433.0
469.0
774.5
499.0
740.0
864.6
347.7
206.4
403.2
22.2
86.0
161.2
63.5
97A
1282.7 X 520.I X 1019.1
124ANSO48/ 24AHA448
0
X
0
X
X
942.8
1130.0
433.0
469.0
774.5
499.0
740.0
864.6
368.3
215.9
479.4
22.2
86.0
161.2
96.6
110.2
1282.7 X 520.7 X 1019.1
124ANS060/ 24AHA450
0
X
0
X
X
10952
113C.0
433.0
469.0
774 5
409A
892.4
10 n.0366.3
215.9
-
22.2
86.0
161 .2
111.1
124.7
1282.7 X 520.7 X 1171.5
0
o
0
�O
o
cb
o
r1
N
M
N
C)
(Dcb
N
00
N
C)�
N
UNIT SERIES ELECTRICAL
CH RACTERISTI
5HHA4301 0 1 X 1 0 11 0
O
(O
f0
f0
()
N c" N C)
(DCb N O �
N N
Table 8 - Dimensions (HPs)
A I B I C D I E F I G H I J
Table 9 - Dimensions SI (HPs)
K L M N P OPERATING1 SHIPPING I SHIPPING
WEIGHT(Ibs) WEIGHT(Ibs) DIMENSIONS (L x W x H
1/8" 1 15 7/8" 1 3/4" 1 3 3/8" 1 5 112" 1 196 226 50 112" X 20 112" X 40 1/8"
UNIT
SERIES
ELECTRICAL
CHARACTERISTICS
A
B
C
D
E
F
G
H
J
K
L
M
N
P
OPERATING
WEIGHT(KG)
SHIPPING
WEIGHT(KG)
SHIPPING
DIMENSIONS (L x WqxH)9
0
774.5
499.0
740.0
864..206.4
403.2
19.1
86.0
139.2
88.9
1025
1282.7 X 520.7 X 10224ANS036000/
25HHA436
0
X
0
X
X
942.8
1130.0
433.0
469.0
774.5
499.0
740.0
864.6347.7
206.4
403.2
22.2
86.0
139.2
89.4
103.0
1282.7 X 520.7 X 10224ANSO48000/
25HHA448
0
X
0
X
X
1095.2
1130.0
433.0
469.0
774.5
499.0
892.4
1017.0
368.3
215.9
d79.4
22.2
86.0
139.2
111.6
125.2
1282.7 X 520.7 X 11
o pp oMo
N o N �pp
ON \ tp
N N
Legend:
- X= Yes
- O=No
CLEARANCES - INDOOR
E
E z3.9in (100mm) E
0 0
0
c
c
rn crj
Al
A0150267
Fig. 8 — 40MKCB**F, 40MKQB**F Unit Clearance
CLEARANCES - OUTDOOR SYSTEM REQUIREMENTS
1. Single Unit Applications: With coil facing wall: Allow 6"
(152.4mm) minimum clearance on coil side and coil end and
20" (504.0 Tom) minimum clearance on fan side. Allow 24"
(609.6 mm) minimum clearance on compressor end for
service.
2. With fan facing wall: Allow 8" (203.2 mm) minimum
clearance on fan side and coil end and 20" (504.0 Tom)
minimum clearance on coil side. Allow 24" (609.6 Tom)
minimum clearance on compressor end for service when units
are stacked or there is less than 40" (1016 mm) of clearance
above the unit. If there is 40" (1016 mm) clearance above unit
and the top panel is accessible for removal allow 8" (203.2
mm) minimum clearance on compressor end for service.
3. Multi -unit Applications: Allow 24" (609.6 mm) minimum
clearance between fan and coil sides of multiple units. Arrange
units so discharge of one does not enter inlet of another. Allow
24" (609.6 mm) minimum clearance on compressor end when
units are stacked or there is less than 40" (1016 mm) of
clearance above the unit. If there is 40" (1016 mm) clearance
above unit and the top panel is accessible for removal allow 8"
(203.2 mm) minimum clearance on compressor end for
service. When two units are installed end to end with the coil
ends facing each other allow 12" (304.8 mm) minimum
clearance between units.
IMPORTANT: When installing multiple units, ensure the
discharge air from one unit is not drawn into another unit.
When installing single or multiple units in an alcove, roof well,
or partially enclosed area, ensure there is adequate ventilation
to prevent recirculation of discharge air.
Clearances
Allow sufficient space around the indoor and outdoor unit for
proper airflow circulation and servicing. Refer to Fig. 8 and the
outdoor unit clearance section for minimum required clearances.
Piping: Piping and insulation is field supplied.
Piping Lengths
The minimum length between the indoor and outdoor units is 10 ft.
(3 m). Refer to table 10 for the maximum lengths allowed.
Table 10 — Maximum Refrigerant Line Lengths
UNITSIZE MAX LINE MAX ELEVATION (ID MAX ELEVATION
LENGTH* ft(m) OVER OD ft (m) (OD OVER ID) ft (m) ft (m)
18K -54K 250 (76.2) 65 (19.8) 200 (61)
Note: For lengths greater than 25 ft. (7.6 m), refer to the Residential
Long Line Guide.
Note: Maximum actual length not to exceed 200 ft. (61 m). Total
equivalent length accounts for losses due to elbows or fitting. See
the Long Line Guideline for details.
Pipe Sizes
In some models, indoor unit and/or outdoor unit pipe sizes may
differ from those in TXV connections. Coupling is required in
those cases. See table below for a complete list of tube sizes to
identify coupling needs. Refer to Table 11 for pipe sizes.
Table 11— Pipe Sizes
INDOOR UNIT
TXV KIT TUBE
OUTDOOR UNIT
INDOOR
UNITS
OUTDOOR
UNITS
TUBE SIZES (In)
SIZES (in)
TUBE SIZE (in)
Liquid
Vapor
Liquid
Vapor
Liquid
Vapor
40MKCB18F--3
24AHA418
5/8
5/8
5/8
124ANS018
40MKCB34F--3
24AHA424
3/4
3/4
3/4
124ANS024
40MKCB34F--3
24AHA430
3/4
3/4
3/4
124ANS030
40MKCB34F--3
24AHA436
3/4
3/4
7/8
124ANS036
3/8
3/8
3/8
40MKCB54F--3
24AHA448
3/4
7/8
7/8
124ANSO48
40MKCB54F--3
24AHA44860
3/4
7/8
11/8
124ANS060
40MKQB36F--3
25HHA430
3/4
3/4
3/4
224ANS030
40MKQB36F--3
25HHA436
3/4
3/4
7/8
224ANS036
40MKQB48F--3
25HHA448
3/4
7/8
7/8
224ANSO48
Note: Both lines need to be insulated using at least 1/2 inch closed
foam insulation.
Condensate Drain Pipe Sizes
Communication Wiring:
Refer to table 12 for the required sizes.
Table 12 — Drain Pipe Sizes
UNIT SIZE OUTSIDE DIAMETER
18K-54K 1(25.4)
Refrigerant Charge
The outdoor units can be matched with multiple indoor units, and
thus a different amount of charge might be required when matched
with the 40MKCB**F or 40MKQB**F units. Charge to
Sub -cooling Delta from Rating Plate Value as stated below.
Table 13 — Charge Requirements
CHARGE TO
NOMINAL
SUB —COOLING
SYSTEM
CAPACITY
OUTDOOR UNIT
INDOOR UNIT
DELTA FROM
TYPE
kBTU/Hr
RATING PLATE
VALUE
18
24AHA418AO03
124ANS018000
40MKCB18F--3
12
24
24AHA424AOW
124ANS024000
40MKCB34F--3
12
Cooling
30
24AHA43OA003
124ANS030000
40MKCB34F--3
12
Only
34
24AHA436A003/5/6
124ANS036000
40MKCB34F--3
8
48
24AHA448A003/5/6
124ANSO48000
40MKCB54F--3
12
54
24AHA460A003/5/6
124ANS060000
40MKCB54F--3
10
30
25HHA43OA003
224ANS030000
40MKQB36C--3
11
Heat
Pump
36
25HHA436A003/5/6
224ANS036000
40MKQB36C--3
14
48
25HHA448A003/5/6
224ANSO48000
40MKQB48C--3
11
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), an additional charge is required. Refer to the
Residential Long Line Guide.
Metering Device
The 40MKC(Q)*F unit uses a TXV. The outdoor unit uses a type
B accurator. The cooling metering device is installed with the
indoor unit, while the heating metering device is installed with the
outdoor unit. One metering device is required for the cooling only
system and two are required for the heat pump systems. Refer to
Table 14 for a breakdown of each unit's metering devices.
Table 14 — Metering Devices
SYSTEM SIZE
kBTU/hr
COOLING ONLY
HEAT PUMPS
40MKCB**C
40MKQB—C
25HHA4/224ANS
18
TXV
24
TXV
-
30
TXV
TXV
0.055"
34
TXV
-
48
TXV
54
TXV
-
36
TXV
0.063"
48
TXV
TXV
0.073"
POWER AND CONNECTING CABLES -
FIELD SUPPLIED
Recommended Connection Method for Power and
Communication Wiring (To minimize
communication wiring interference)
Power Wiring:
The main power is supplied to both the indoor and the outdoor units.
The field supplied connecting cable consists of three (3) wires. Two
wires are high voltage AC power and one is a ground wire. Consult
your local building codes and the NEC (National Electrical Code) or
CEC (Canadian Electrical Code) for special requirements. All wires
must be sized per NEC or CEC and local codes. Use 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 caution note, only copper conductors with
a minimum 300 volt rating and 2/64-inch thick insulation must be
used.
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.
To minimize voltage drop of the communication wire, use the wire
size and maximum lengths shown in Table 15.
Table 15 — Maximum Wire Lengths
WIRE SIZE
LENGTH ft. (m)
18AWG
50 ft. (15 m)
16AWG
50 ft. (15 m) to 100 ft. (30 m)
13AWG
100 ft. (30 m) to 200 ft. (60 m)
EQUIPMENT DAMAGE HAZARD
Failure to follow the following caution may result in
equipment damage or improper operation.
Wires should be sized based on NEC and local codes.
Use copper conductors only with a 600 volt rating and double
insulated copper wire.
USER INTERFACE
The indoor unit is supplied with a wireless remote control to
operate the unit (an Owner's Manual is supplied with the unit). The
following accessories are available.
• Wall mounted control
OPERATING RANGE
Ensure that the system operates within the application guidelines
shown in the following tables.
Table 16 — Cooling Operating Range
Outdoor
MAXIMUM
MINIMUM
Unit
DB of (°C)TWO
°F (°C)
DB °F (°C)
WB °F (°C)
125 (51.7)
55 (12.8)
Indoor Unit
90 (32)
64 (18)
Table 17 — Heating Operating Range
Outdoor
MAXIMUM
MINIMUM
Unit
DB °F (°C)
WB °F (°C)
DB °F (°C)
WB °F (°C)
75 (23.9)
67 (19.4)
17 (-8.3)
Indoor Unit
80 (27)
32 (0)
ACCESSORIES
An extensive list of field installed accessories is available for both
indoor and outdoor units. Identify what accessories, if any, are
required for the application at hand and consult the separate
installation instructions for the accessories. Some of the
accessories, especially on the indoor units, can be installed much
easier if planned ahead.
INSTALLATION
2. TXV Installation
1. Unpack Unit - Store the indoor and outdoor units in the
original packaging until it is moved to the final site for
installation. When unpacking indoor unit, be careful not to lift
unit by condensate drain discharge pipe or by refrigerant
connections.
2. Inspect Shipment - Upon receipt of shipment, check the
indoor and outdoor units for damage. If there is any damage,
forward claim papers directly to the transportation company.
Manufacturer is not responsible for damage incurred in transit.
3. Inspect Parts Supplied With Units — Check all items
against parts list (see the PARTS LIST section). If any items
are missing, notify your distributor or manufacturer office.
To prevent loss or damage, leave all parts in original
packages until installation.
CONSIDER SYSTEM REQUIREMENTS
1. Consult local building codes and NEC for special
installation requirements.
2. When deciding the location of the indoor and outdoor units,
ensure that the piping run does not exceed the allowed
distances listed in Table 10.
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 the "CLEARANCES -
INDOOR" and "CLEARANCES - OUTDOOR" sections).
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 location where there are no obstacles near inlet and
outlet area.
• A location that can bear the weight of the unit.
• Do not install indoor units near a direct source of heat
such as direct sunlight or a heating appliance.
• Do not install units too close to humid conditions.
• Where an optimum air distribution is ensured.
• Where the condensate can drain correctly and safely.
• Maintain sufficient clearance around the indoor unit for
maintenance and servicing.
• Where the air filter can be removed and cleaned easily.
• Where the piping between the indoor and outdoor units
is within the allowable limits.
• 1m or more away from the TV or radio to prevent the
screen from being distorted or noise from being
generated.
• As far away as possible from fluorescent and incandes-
cent lights so that the remote control can be operated
well.
• Location - The TXV kit can be affixed directly to the
indoor unit or anywhere between 12 to 18 inches from
the indoor unit pipe connection.
Failure to follow the following caution may result in equipment
damage or improper operation.
The TXV kit needs to be installation at most 12 to 18 inches
from the indoor unit pipe connection.
• The TXV kit contains a label specifying the allowed
flow direction. See below for allowed and not allowed
flow directions.
Failure to follow the following caution may result in equipment
damage or improper operation. One of the two arrows on the
TXV part number label must point up when installed.
Install unit such that the refrigerant flow directions is in any of
the two allowed directions.
Outdoor unit
connection
t
Indoor unit 4111111111
connection Z
Outdoor unit
connection
Indoor unit
connection
Arrows on TXV label pointing Arrows on TXV label pointing
upward and to the right upward and to the left
Fig. 9 — Allowed TXV installation direction per label attached
to TXV
To
indoor
unit
Fig. 10 — TXV
To
outdoor
unit
0 0
D
0
o
Liquid pipe
Refigerant Flow Direction
To
indoor
unit
°
D
�
°
To
outdoor
o
unit
o c c o
Gas pipe
`o
o
o �
Z3
Q
o
ao
Q
00 0 1 1 00
O
0
O
0
U
O
0
C
rn
a>
o
o
00 1 1 0 .. 1 0
o —
c
c �
Fig. 11 — Allowed Refrigerant Flow Direction
Refrigerant�n Refrigerant Flow Direction
X
X
Fig. 12 — Refrigerant Flow Direction Not Allowed
• Once location and flow direction is identified, connect
piping between indoor unit and TXV kit. Flexible piping
is recommended.
Failure to follow the following caution may result in equipment
damage or improper operation.
Insulate liquid and vapor pipes connecting to indoor and
outdoor units.
Fixing point for kit
o ® o
. 0O � o o v o e �•
oO ® Oo°
i
Flexable pipings TXV Kit
(Field supply)
Fig. 13 — TXV kit placement when affixed to indoor unit body
Ceiling installation
Wall -mounted installation
Fig. 14 — TXV kit affixed to indoor unit body
pals
d side)
Field pipings
TXV Kit (Field Supplied)
Fig. 15 — TXV kit not affixed to indoor unit body
9
3. Initial Unit Dis-assembly
• Remove the screws on the front of the unit to open the
grille.
• After removing the grille, remove the screws in the side
panels.
• Push the side panels in the direction shown in Fig. 16 to
disassemble them.
Fig. 16 — Initial Unit Dis-assembly
Ceiling Installation
1. Install Suspension Bolts for Ceiling Installation
• Mark the spots on the ceiling where you want to install the
indoor unit.
• Drill holes at the marking spots and then insert bolt anchors.
Use a hole -in -anchor, sunken insert for existing ceilings.
• Install the suspension bolts (use W3/8 or M10 suspension
bolts, 4 pieces) depending on the ceiling type.
It is recommended to install the Y joint before installing the
indoor unit.
When moving the unit during or after unpacking, make sure to
lift by holding its hooks.
Do not exert any pressure on other parts, especially the
refrigerant piping and drain piping.
Insert
F,
Hole in anchor
Hole in plug
Suspension bolt (3/8" or M10) - field supplied
A15o26s
Fig. 17 — Suspension Bolts
2. Hanging the Indoor Unit for Ceiling Installation
• Screw double nuts to each suspension bolts making
space for hanging the indoor unit.
• Hang the indoor unit to the suspension bolts between
two nuts (see Fig 18).
• Screw the nuts to suspend the unit.
• Adjust level of the unit by using level vial for all sides.
Ensure that the ceiling is strong enough to bear the weight of
the unit.
Before hanging the unit, test the strength of each attached
suspension bolt. It might be necessary to reinforce the ceiling
frame.
Screw nut
cushion
Washer Overhang part
Hanging
screw bolt
A150269
Fig. 18 — Suspension Bolt Detail
1. Piping and Drainage Outlet for Ceiling Installation
• The position of drain pipe interface can be selected
according to installation position. During adjustment of
the drain hose, the unused interface should be sealed
with a rubber plug.
Refrigeration pipes
A15o271
Fig. 19 — Drainage Outlet for Ceiling Installation
4. Install the Drain Pipe for Ceiling Installation
• Remove the cover of the drain hose connection port
• Insert the flexible hose onto the drain hose port. Securely
fix the flexible hose to the indoor unit with a pipe clamp.
• Install the flexible hose onto the PVC water pipe (field
supplied, I.D. 1") with PVC adhesive (see Fig. 20).
• To ensure correct condensate water flow, the pipe should
have a gradient of 2% without obstruction (see Fig. 20).
DO NOT install the drainpipe to an upward position.
Doing so may cause water to flow back to the unit.
10
• Make a trap of at least 2 in. (51 mm) in depth to prevent
unpleasant odors from reaching the room.
• Insulate condensate pipe with condensation proof materi-
al such as polyurethane, propylene, or neoprene of 3/16
in. to 3/8 in. thickness.
ELECTRICAL OPERATION HAZARD
Failure to follow this caution may result in personal injury.
The drain tube extension must be securely fastened to the
condensate drain. Failure to do so could result in condensate
water dripping onto the floor.
NOTE: Should the installation require one, a condensate pump
may be ordered as a field -installed accessory. It is easier to install
pump before hanging the unit.
Indoor 0 Pipe demp Flexible hose M water
pipe
Dminhose oonnedanp ll�0.11251 Madhesive
Fig. 20 — Drain Pipe Connection
Wall -Mounted Installation
2.3.2 Piping and drainage outlet for wall -mounted installation
Piping and
Fig. 21— Wall Mounting
i.o-i 5M
xwnw2%
A150273
1. Install the Drain Pipe for Wall -Mounted Installation
• Remove the cover of the drain hose connection port.
• Insert the flexible hose (field supplied, I.D.: 1") to the
drain hose port. Securely fix it to the indoor unit with a
pipe clamp (field supplied).
• Install the flexible hose onto the PVC water pipe with
PVC adhesive (see Fig. 20).
• To ensure correct condensate water flow, the pipe should
have a gradient of 2% without obstruction (see Fig. 20).
DO NOT install the drainpipe to an upward position. It
may cause water to flow back to the unit.
• Make a trap of at least 2 in. (51 mm) in depth to prevent
unpleasant odors from reaching the room.
• Insulate condensate pipe with condensation proof materi-
al such as polyurethane, propylene, or neoprene of 3/16
in. to 3/8 in. thickness.
• The drain line must not have a trap anywhere in its
length, must pitch downwards, and must be insulated up
to the outside wall (see Fig. 22).
Bend
0 x x
A150276
Fig. 22 — Drain Pipe Connection for Wall Mounting
INSTALL OUTDOOR UNIT
The outdoor units can be installed on the ground, on the roof, or
mounted on a wall.
NOTE: Install the unit so that the coil does not face into
prevailing winds. If this is not possible and constant winds
above 25 mph are expected, use accessory wind baffle. See the
installation instructions provided with accessory kit. Wind
baffles should also be used on all units with accessory low
ambient temperature control.
Mounting on Ground
1. Mount unit on a solid level concrete pad.
2. If a heat pump is being installed, use a field- provided snow
stand or ice rack where prolonged subfreezing temperatures
or heavy snow occurs.
nose outlet 3. Position unit so water or ice from roof does not fall directly
onto unit.
4. On cooling only units, an accessory stacking kit can be used
when units are to be stacked. See installation instructions
provided with the accessory kit.
Mountin2on Roof
IMPORTANT: Mount unit on a level platform or frame at
least 6 in. (152.4 mm) above roof surface. Isolate unit and
tubing from structure.
11
PERSONAL INJURY AND/OR EQUIPMENT
DAMAGE HAZARD
Failure to follow this caution may result in personal injury
and/or equipment damage.
Be sure unit panels are securely in place prior to rigging.
1. Rig the unit. Keep the unit upright and lift using a sling.
Use cardboard or padding under the sling, and spreader bars
to prevent sling damage to the unit. See Fig. 23 for the
center of gravity reference.
2. Mount unit on a solid concrete pad or platform.
3. Isolate unit and piping from structure.
4. If a heat pump is being installed, use a field- provided snow
stand or ice rack where prolonged subfreezing temperatures
or heavy snow occurs.
5. On cooling only units, an accessory stacking kit can be used
when units are to be stacked. See installation instructions
provided with accessory kit.
JG
SLING PADDING
COMPRESSOR
END
CENTER OF
GRAVITY
A07396
Fig. 23 — Lifting Unit with Sling
Mounting Unit on Wall
The units can also be mounted on the wall using the accessory
mounting kit.
COMPLETE OUTDOOR REFRIGERANT
CONNECTIONS
Follow the following general guidelines:
1. Use refrigerant grade field — supplied tubing. Refer to Table
11 for the correct line sizes.
2. Do not use less than 10 ft (93.05 m) of interconnecting
tubing.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
If any section of pipe is buried, there must be a 6 in. (152.4
mm) vertical rise to the valve connections on the outdoor
unit. If more than the recommended length is buried,
refrigerant may migrate to cooler, buried section during
extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start-up.
When more than 80 ft. (24.4 m) of interconnecting tubing is used,
consult the Residential Long Line Application Guide for required
accessories.
3. Insulate both lines. A minimum of 1/2 inch foam pipe
insulation is recommended.
4. Run the refrigerant tubes as directly as possible and avoid
unnecessary turns and bends.
5. Suspend refrigerant tubes to avoid damage to insulation or
tubes so they do not transmit vibration to the structure.
6. When passing refrigerant tubes through the wall, seal the
opening so rain and insects do not enter the structure. Leave
some slack in refrigerant tubes between structure and
outdoor unit to absorb vibration.
Connection at Outdoor Unit
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
To prevent damage to unit or service valves observe the
following:
• A brazing shield MUST be used.
• Wrap service valves with wet cloth or use a heat sink
material.
24AHA4/124ANS Units:
1. Assemble the connector tube to the factory supplied filter
drier by:
• Braze the field supplied connector to the inlet of the filter
drier (see Fig. 24).
CONNECTOR LINE SET
(BY OTHERS) (BY OTHERS)
FILTER
/DRIER
A09536
Fig. 24 — Cooling Only Connector Tube Assembly
2. Braze the completed filter drier assembly to the liquid
service valve.
3. Connect the field supplied line set to the filter drier
assembly and the suction valve. A sweat connection is
required at the suction valve and flare connection is required
for the mixed phase line.
4. Insulate any exposed areas between the line set and the
liquid valve.
25HHA4/224ANS Units
1. Assemble the connector tubes to the factory supplied filter
drier by brazing the factory supplied flare connectors to the
inlet and outlet for the filter drier (see Fig. 25).
PISTON CAP LINE SET
FILTER I(BY OTHERS)
FLARE /DRIER
CONNECTOR
METERED FLOW
HEATING
Fig. 25 — Heat Pump Connector Tube Assembly
A09537
12
2. Remove the plastic cap from the liquid and suction service
valve on the heat pump outdoor unit and assemble the
heating piston and piston cap supplied with the outdoor unit
as shown in Fig. 26.
PISTON
�r HEATING
PISTON CAP
FLARE
CONNECTOR
METERED FLOW
HEATING
A07407
Fig. 26 — Accurator (bypass type)
Metering Device Components
NOTE: The Teflon seal on the piston should point towards the
liquid service valve. The size of the factory supplied piston
might have to be adjusted for long line applications (over 80 ft.
/24.4 m). Refer to the Residential Long Line Application Guide
for additional information.
3. Attach the flare end of the filter drier assembly to the piston
cap (see Fig. 25).
4. Connect the field supplied line set to the filter drier
assembly and to the suction valve.
5. Insulate any exposed areas between filter drier and liquid
valve.
COMPLETE OUTDOOR POWER AND
CONTROL WIRING
Failure to follow this warning could result in personal injury or
death.
The unit cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault should
occur. The ground may consist of electrical wire or metal
conduit when installed in accordance with existing electrical
codes.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Unit failure as a result of operation on improper line voltage or
excessive phase imbalance constitutes abuse and may cause
damage to electrical components. Such operation could void
any applicable manufacturer warranty.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before performing service or maintenance, be sure indoor
unit main power switch is turned OFF and indoor blower has
stopped.
Lock out and tag switch with a suitable warning label.
Power Wiring
NOTE: The indoor and outdoor units are powered separately
1. Mount indoor and outdoor power disconnect. The units are
factory wired for the voltage shown on the unit nameplates.
The fused disconnect switch must be provided within sight of
the unit, readily accessible, but out of reach of children.
Provisions for locking the disconnect switch on the OFF
(open) position is advisable. The disconnect switch must
comply with NEC and local codes. Protect the unit and wiring
using only the recommended fuse/circuit breaker size (see
Tables 17 thru 20).
2. Run power wiring from electric panel to disconnect per
NEC and local codes.
3. Run power wiring from the disconnect switch to indoor and
outdoor units. Use only minimum 75°C copper conductors
between the disconnect switch and the unit for field power
connection.
4. Route the field power wires through the conduit connection
opening in the unit side panel and connect in junction box
as shown in Fig. 27 for outdoor units and the strain relief
bracket section for indoor units. The units and power wiring
must be grounded.
— -GROUND LEAD —
0 GROUNDING LUG
SINGLE-PHASE
CONN TO
BLK
DISCONNECT
— — — — — —
PER NEC
— — — — —
P_BLK
SINGLE-PHASE UNIT
— — — — — C� BLK
THREE-PHASE — — — — — — BLU
CONN TO
DISCONNECT — — — — — �YEL
PER NEC
-GROUND LEAD GROUNDING LUG
THREE-PHASE UNIT
LEGEND
NEC -- National Electrical Code
Q -- Splice (field)
- Field Wiring
FactoryWiring
A08251
Fig. 27 — Line Power Connections
NOTE: Operating unit on improper line voltage constitutes
abuse and may affect the manufacturer's warranty. DO NOT
install unit in a system where voltage may fluctuate above or
below permissible limits.
13
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 four conductor cable is required for heat
pumps.
The control circuit is 24 volts AC (minimum 40VA) supplied from
the indoor unit.
1. Make sure you have enough control wires to cover the
distance between the indoor and outdoor unit.
2. Route one end of the control wiring through the opening
provided in the unit side panel and connect to the control
terminal strip using either Fig. 28 for AC units or Fig. 29
for Heat Pump units.
INDOOR TERMINAL BLOCK
:Dl9196 janagan
gym]
i)I
SEE NOTE #3 --)o.
LEGEND
— FACTORY CONTROL WIRING (24V)
-- FIELD CONTROL WIRING (24V)
P FIELD SPLICE
OUTDOOR UNIT TERMINALS
NOTES:
1. Symbols are electrical representation only.
2. To be wired in accordance with National Electric N.E.C. and local codes.
3. Use copper conductors only. Use conductors
suitable for at least 75°C (167T).
4. If any of the original wire, as supplied must be
replaced, use the same or equivalent wire.
CONNECTION DIAGRAM (AC)
A150280
Fig. 28 — 40MKCB**F/24AHA4 or 124ANS Connecting
Diagram
INDOOR TERMINAL BLOCK
OUTDOOR UNIT TERMINALS
NOTES:
L1 L2 =
F SEE NOTE #3
LEGEND
FACTORY CONTROL WIRING (24V)
- — — — — — FIELD CONTROL WIRING (24V)
Cq FIELD SPLICE
1. Symbols are electrical representation only.
2. To be wired in accordance with National Electric N.E.C. and local codes.
3. Use copper conductors only. Use conductors
suitable for at least 75°C (167T).
4. If any of the original wire, as supplied must be
replaced, use the same or equivalent wire.
CONNECTION DIAGRAM (HP)
A150282
Fig. 29 — 40MKQB**F/25HHA4 or 224ANS Connecting
Diagram
Strain Relief Bracket for Indoor Units
A strain relief is included within the indoor unit's packaging. This
is required to be installed. The strain relief bracket and location to
where this should be affixed on the unit's body is shown in Fig. 30
and 31.
0 22.22 +0.79 X2
0.38
Note: dimensions are in millimeters (mm)
A150308
Fig. 30 — Strain Relief Bracket
Strain Relief Bracket Location
A150307
Fig. 31 — Strain Relief Bracket Affixed to Under Ceiling Body
14
ELECTRICAL DATA
Table 18 - 24AHA4/124ANS Electrical Data
UNIT SIZE --
voltage,series
V/PH
OPER VOLTS*
COMPR
FAN
MCA
MAX FUSE**
or
CKT BRK AMPS
MAX
MIN
LRA
RLA
FLA
18--3
208/230/1
253
197
56.3
9
0.5
11.8
20
24--3
62.9
10.9
0.5
14.1
25
30--3
73
14.1
0.7
18.3
30
36--3
77
14.1
1.2
18.8
30
48--3
124
18.5
1.2
24.3
40
60--3
152.5
23.7
1.45
31.1
50
36--5
208/230/3
253
197
71
9
1.2
12.5
20
48--5
83.1
13.7
1.2
18.3
30
60--5
110.0
15.9
1.45
21.4
35
36--6
460/3
506
414
38
5.6
0.6
7.6
15
48--6
41
6.2
0.6
8.4
15
60--6
52.0
7.1
0.80
9.7
15
Table 19 - 25HHA4/224ANS Electrical Data
UNIT SIZE --
V/PH
OPER VOLTS*
COMPR
FAN
MCA
MAX FUSE**
or
voltage,series
MAX
MIN
LRA
RLA
FLA
CKT BRK AMPS
30--3
208/230/1
253
197
64
12.8
1.2
17.2
30
36--3
77
14.2
1.2
19
30
48--3
117
21.8
1.45
28.8
50
36--5
208/230/3
253
197
71
9.3
1.2
12.8
20
48--5
83.1
13.7
1.45
18.6
30
36--6
460/3
506
414
38
5.6
0.6
7.6
15
48--6
41
6.2
0.8
8.6
15
Table 20 - 40MKCB**F Electrical Data
INDOOR UNIT
SIZE
BTU/Hr
V-Ph-Hz
VOLTAGE RANGE
FAN
POWER
Min (V)
Max (V)
FLA (A)
Min Ckt Amp (A)
Max Fuse CB Amp
(A)
18K
208-230-1-60
187
253
0.71
1
15
24K - 34K
208-230-1-60
187
253
0.7 x 2
3
15
48K-54K
208-230-1-60
187
253
0.95 x 2
3
15
Table 21- 40MKQB**F Electrical Data
INDOOR UNIT SIZE
BTU/Hr
V-Ph-Hz
VOLTAGE RANGE
FAN
POWER
Min M
Max (V)
FLA (A)
Min Ckt Amp
Max Fuse CB
(A)
Amp (A)
30K- 48K
208-230-1-60
187
253
0.95 x2
3
15
LEGEND
FLA -Full Load Amps
HACR- Heating, Air Conditioning, Refrigeration
LRA- Locked Rotor Amps
NEC- National Electrical Code
RLA- Rated Load Amps (compressor)
*Permissible limits of the voltage range at which the unit will operate satisfactorily
**Time- Delay fuse.
Complies with 2007 requirements of ASHRAE Standards 90.1
is
►�i
_ _ (WHITE) (RED)
� z
__ __; MAIN CONTROL BOARD
XP4 2I h
I4I
DISPLAY I
BOARD Er —TO REMOTE CONTROLLER CONNECTOR
J Legend:
Models pecific feature
CAP Capacitor
CN1: Live wire LI/Null line L2
CN2/3: Transformer interface
CN 25:Controls 24V signal interface(C)
CN 7:S ensor interface
CN 20: Network module interface
ON11 i CN 12: Vertical swing motor interface
i CN 13: horizontal swing motor interface
C N 10: Display board interface
CN 15: C ompres sorsignai interface
CN 11: Water level detection switch
C N 1 fi: Motor interface
RT1: Room temperature sensor
cN1s RT2. Pipe temperature sensor
T3/4:T ra "former
GM1/3: Level swing motor
i G M 2: V ertical s wing motor
i XS/XP: Connectors
I ;
NnU T3 BLUE
RED ":WHITE
wNIY�Y/GrrrTTT I�I�I����IIITTT������TTT������,,,,,, CAP1 L_ _ CAP2_
11 L2
Notes: I
24V^ Controls To be wired in a ccordance with National I NEr NoouLETo ccM
Mode
0 0 signal to POWER Electr2.UseiC Copper
and cto socal only. I I
Mode outdoor unit SUPPLY 2.Use Copper conductors only. I
FLOOR cEIUNG Use conductors suitable for at lea: t75"C(167T),I I
CN20 I
FACTORY 3. Ifanyofthe originalwires, as supplied IJ
_
SETTING must be replaced, use the s ame or equivalent wire. —
Fig. 32 — 40MKCB**F Wiring Diagram
OUTDOOR UNIT SCHEMATIC DIAGRAM
L1 COMP L21
I
E
*LPS *DTS
T1 T3
*CTD
*LLS
CONT
Fig. 33 — 224AHA4/124ANS Wiring Diagram 208/230V 1 Phase
16
t
EQUIF
GNE
*HPS `LPS
CTD
IFR
a------------------- -------
R C
a-------------------- t-U-1 -------
INDOOR
THERMOSTAT EXTERNAL POWER SUPPLY 24 V
CONT
Fig. 34 — 24AI3A4/124ANS Wiring Diagram 208/230 — 460V 3 phase
(WHITE) (RED)
XS4
T3
DISPLAY
BOARD
J
TO WIRED REMOTE CONTROLLER CONNECTOR
Legen d:
r — r
I
................Model spec the fe ature
?GM3
CAP: Capac itor
CN1: Live w ire Ll /Null I ine L2
1
CN2/3:Transformer interface
CN 25 {ontrols 24V signal interfacelR /0
i i
CN7: Sens or interface
r --
CN20:Networkmodule interface
CN10 CN15 cNtt I I LEI
CN12 :Verticalswing motor interface
I IL — — —I
CN13:horizontalswing motor interface
CN10:Display boand interface
MAIN CONTROL BOARD
CN15:Sign alinterface(Y/0)
CNI1: Water level detection switch
CN 16: Motor interface
CN3 CN2 CN1 CN16
RT1: Room temperature sens or
RT2: Pipet emperature sensor
T3/4: Trans former
LT�
GM1/3: Leve I swing motor
GM2: Vertical swing motor
XS/XP :Con nectors
Sw1
ON
24V—
Controls
signal to
outdoor
unit
MODE
FLOOR
CEILING
FACTORY
SETTING
/
XP1
xst
LUE
XP3I XS3
L
RED
—) -----�
I
I
Y G
I
Y c
o
FAN1 I
FAN2
m Y/G
I I
WHIT WHITE I WHITE WHITE
I K3
I
CAP1
CAP2 I .
I------3-----J
POWER
Notes:
r---------1
SUPPLY
1.TobewiredinaccordancewithNational
TO CCM
Electr is N.E C. a nd local codes,
NET MODULE
2.Use Copper conductors only.
Use c onductors s uitable for at lea st 15' Q167 T).
3. If a ny of the original wires, as s upplied
I cN2o
must be re place d,use the s ame o r equ ivalen t wire.
L _ _ _ _ _ _ _ _ _ 1
Fig. 35 — 40MKQB**F Wiring Diagram
17
I (OUTDOOR UNIT SCHEMATIC DIAGRAM
2 _
I I I
CONT COMP R
I — 11 21 C I
I
5 2 *SC S *ST
EQUIP +t
GND 1 H
*SR CONT
* CHS DR OFM C T 23 23
* CH OF1 OF2 F CAP
D\/C _
Fig. 36 — 25HHA4/224ANS Wiring Diagram 208/230V 1 Phase
L1 L2 I L3
I I
I fGONT COMP_____] I
1
T T,
EQUIP
GNDDR OFM CAP
CONT
rN OF1 OF2 13 J
901 FIELD SELECTED TIME PERIOD
p 30 BETWEEN DEFROST CYCLES (MINUTES)
S UPD JUMPERED TEST PINS (USE METAL OBJECT): FIELD SPEED-UP CYCLE
HEAT CYCLE: 90 MIN. ACCELERATED TO 21 SEC.
60 MIN. ACCELERATED TO 14 SEC.
30 MIN. ACCELERATED TO 7 SEC.
DEFROST CYCLE: 10 MIN. ACCELERATED TO 2 SEC.
Fig. 37 — 25HHA4/224ANS Wiring Diagram 208/230V 3 phase
18
u l L2 L3
I I I I
I I GONT T COMP-----�
L - 11 21 T1 I
EQUIP OFM CAP
GND OFIR
1 3 CANT I
,CH
RVS
❑ 90� FIELD SELECTED TIME PERIOD
❑ 30 BETWEEN DEFROST CYCLES (MINUTES)
SPJEPED ❑ ❑ JUMPERED TEST PINS (USE METAL OBJECT), FIELD SPEED-UP CYCLE
HEAT CYCLE: 90 MIN. ACCELERATED TO 21 SEC.
60 MIN. ACCELERATED TO 14 SEC.
30 MIN. ACCELERATED TO 7 SEC.
DEFROST CYCLE: 10 MIN. ACCELERATED TO 2 SEC.
Fig. 38 — 225HHA4/224ANS Wiring Diagram 460V 3 phase
19
RUN POWER WIRING FOR INDOOR UNIT
Be sure field wiring complies with local building codes and NEC,
and unit voltage is within limits shown in Tables 17 through 20.
Contact the local power company for correction of improper line
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.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Unit failure as a result of operation on improper line voltage or
excessive phase imbalance constitutes abuse and may cause
damage to electrical components. Such operation could void
any applicable manufacturer warranty.
NOTE: Use copper wire only between disconnect switch(es)
and unit.
NOTE: Install branch circuit disconnect of adequate size to
handle unit starting current per NEC. Locate disconnect
within sight of, and readily accessible from, unit, per section
440-14 of NEC. Some codes allow indoor unit to share
disconnect with outdoor unit if disconnect can be locked; check
local code before installing in this manner.
The 40MKCB**F and 40MKQB**F units require their own
power supply.
1. Locate the indoor power supply.
2. Locate and install disconnect switch per NEC and local
codes.
3. Run power supply wiring to disconnect switch.
4. Run power wiring from disconnect switch to the unit's
control box. Use copper wire only between the disconnect
switch and unit.
5. If any accessories are being installed, refer to the individual
accessory instructions for guidance on wire routing at this time.
Install All Power, Interconnecting Wiring. Piping
and Drain Hose to Indoor Unit
1. Run the control wiring from the outdoor unit through the
access hole in the wall and make sure you have enough wire
to reach the control box of the unit once hung from the
suspension bolts or mounted to the wall.
2. It is a recommended that flare connections is located on the
outside of the wall where the indoor unit is to be
mounted/hung. If an extension pipe is required to facilitate this
location, measure, fabricate and install the extension pipes to
the indoor unit before hanging/mounting to the wall.
3. If piping connections are on the outside wall, pass the pipes
(refrigerant and drain) through the wall sleeve and then
hook/hang the indoor unit body. Support the unit away
from the bottom using a tool or a piece of wood.
NOTE: Tie together the refrigerant piping, the drain hose, and the
electrical connection wires and ensure that the drain hose is at the
bottom.
Indoor unit piping
6 Connection wiring
Q Drain hose
A08364
Fig. 39 — Location of Piping, Hose, and Wiring
A017ss
Fig. 40 — Removing Burrs
ffi!
I
I
I
I
I
I
A07200
Fig. 41— Flared Walls as Equal
Route the power and control wiring through the back side
of the unit and to the control box area. If the wired remote is
to be used, perform any modifications required at this time.
Refer to the Accessory installation instructions.
Remove the control box cover and finish all indoor unit
wiring connections as shown on the wiring diagram or in
the accessory installation instructions. Replace the control
box cover.
20
6. Lubricate the end of the pipe and thread of the flare
connection with refrigerant oil. Tighten by hand and then
use two wrenches (see Fig. 42) to tighten all connections.
tQ Adjustable wrencl
Qz Outdoor end
QQ Indoor end
Fig. 42 — Tightening Connections
START-UP
PRELIMINARY CHECKS
Outdoor Unit Refrigerant Indoor Unit
Low Side
ig i e
Service Valve
A07360
Fig. 43 — Service Valve
Manifold Gage
500 microns
A07201
Low side valve
Charge hose
1. Check condensate drainage system; on the opposite side of
the drain connection, insert a water bottle up into the fan
coil unit and fill the drain pan. Water must flow steadily; if
not, check the pipe slope or inspect for any pipe restrictions.
2. Make sure all wiring connections are correct and they are
tight.
3. Field electrical power source must agree with unit name
plate rating.
4. Check that all barriers, covers, and panels are in place.
Ensure that the filters and return -air grilles on the indoor
unit have been installed and that the discharge louvers are
positioned correctly.
5. All service valves must be closed.
6. On units with crankcase heaters, ensure belly -band heaters
are tight around the compressor.
EVACUATE AND DEHYDRATE THE
SYSTEM
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Never use the system compressor as a vacuum pump.
Using Vacuum Pump
1. Completely tighten flare nuts A, B, C, D, connect manifold
gage charge hose to a charge port of the low side service
valve (see Fig. 43).
2. Connect charge hose to vacuum pump.
3. Fully open the low side of manifold gage (see Fig. 44).
4. Start vacuum pump
5. Evacuate using either deep vacuum or triple evacuation
method.
6. After evacuation is complete, fully close the low side of
manifold gage and stop operation of vacuum pump.
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 charge up to the maximum allowable length
as specified in the residential Long Line Application Guide.
8. Disconnect charge hose from charge connection of the low
side service valve.
9. Fully open service valves B and A.
10. Securely tighten caps of service valves.
Low side valve
igh side valve
Charge hose
\� , Vacuum pump
0
A07361
Fig. 44 — Manifold
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 most positive way of assuring a system is free of air and
liquid water (see Fig. 45).
5000
4500
4000
�3500
p 3000
LEAK IN
SYSTEM
V 2500
2000
5
1500
VACUUM TIGHT
TOO WET
1000
500
TIGHT
DRY SYSTEM
0 1 2 3 4 5 6 7
MINUTES
Fig. 45 — Deep Vacuum Graph
A95424
21
Triple Evacuation Method
The triple evacuation method should only be used when vacuum
pump is only capable of pumping down to 28 in. of mercury
vacuum and system does not contain any liquid water. Refer to Fig.
46 and proceed as follows:
1. Pump system down to 28 in. of mercury and allow pump to
continue operating for an additional 15 minutes.
2. Close service valves and shut off vacuum pump.
3. Connect a nitrogen cylinder and regulator to system and
open until system pressure is 2 psig.
4. Close service valve and allow system to stand for 1 hr.
During this time, dry nitrogen will be able to diffuse
throughout the system absorbing moisture.
5. Repeat this procedure as indicated in Fig. 46. System will
then be free of any contaminants and water vapor.
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACUUM)
RELEASE CHARGE INTO SYSTE
A95425
Fig. 46 — Triple Evacuation Method
TO START THE UNIT:
1. If the outdoor unit is equipped with a crankcase heater, turn
on the indoor and outdoor disconnect switches to supply
power to the system 6 hours before starting the system.
2. Release charge into the system by opening (back -seating)
liquid and suction line service valves.
3. Set the wireless remote control or wired remote control
below ambient temperature. Operate the unit for 15 minutes.
4. Refer to Table 13 to determine if additional charge is
required. Also, if you have a long line application, refer to
the Residential Long Line Application Guide to determine
the additional charge that is required beyond 25 ft. (7.6 m).
5. Charge should be added as liquid (not gas) slowly and
carefully to low side to avoid liquid slugging.
6. Start unit with operation test. In test mode the unit will run
in cooling and heating (on heat pumps) regardless if there is
demand or not.
TEST OPERATION FOR UNDER
CEILING/CONSOLE
Perform test operation after completing gas leak and electrical
safety check (see Fig. 47).
1. Push the "ON/OFF" button on Remote Control to begin
testing.
NOTE: A protection feature prevents air conditioner from being
activated for approximately 3 to 4 minutes.
2. Push MODE button, select COOLING, HEATING, FAN
mode to check if all functions work correctly.
3. To run the test using the manual button in the indoor unit:
• Push the manual switch once to energize the unit.
The set conditions of manual operation are as follows:
Preset set point: 76°F (24°C)
Fan speed: AUTO
Discharge air direction: Pre-set position based on
operation in "Cool" or "Heat' mode.
4. Be sure to set manual switch to "OFF" (by pushing it twice
again) after finishing test operation.
❑ MAONUAL EM
IM 0
Al502s4
Fig. 47 — Manual Button from display board
Manual Operation
Manual operation can be accessed by pressing manual button on
display panel. Press the manual button repeatedly to change modes
as follows:
• Once = AUTO mode [heat, cool or fan, 24°C and auto
fan speed.
• Twice = COOLING mode [switch to AUTO mode after
30 minutes (mainly used for trial operation)]
• Three times = OFF
NOTE: For Heat Pumps, follow the same procedure.
Visually check that the condensate is being discharged from the
unit. If the unit is running in heating mode, the condensate needs to
be checked and the following needs to be performed:
• Remove grille and frame from the unit.
• On the opposite side of the drain connection, insert a
water bottle up into the fan coil unit and fill drain pan
(see Fig. 48).
0 0
0 0
0 0
0 0
0 0
1 0 0
0 0 1
0 0
Aos552
Fig. 48 — Inserting Water Into Drain Pan
Water must flow regularly with condensate pump energized. If not,
check the pipe slope or see if there are any pipe restrictions.
NOTE: The unit is equipped with a safety float switch to de -energize
the compressor if the drain pan water level gets too high.
22
SERVICE AND MAINTENANCE
Pump -down Procedure
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.
Remove unit grille, filter, and condensate pan for cleaning,
lubricating, or replacing parts.
Minimum Maintenance
1. Check, clean, or replace air filter each month or as required.
2. Check cooling coil, drain pan, condensate trap, and
condensate drain pan each cooling season for cleanliness.
Clean as necessary.
3. Check fan motor and wheel for cleanliness each heating and
cooling season.
4. Check electrical connections for tightness and controls for
proper operation each heating and cooling season. Service
as necessary.
TO CLEAN OR REPLACE AIR FILTERS
1. Place a plastic sheet on the floor to catch any water that may
spill from drain pan.
2. Slide filter out.
3. Vacuum clean or wash filter with soapy water. Rinse and let
air dry. If filter needs replacing, filters are available from a
local dealer.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation. Operating the system with dirty air
filters may damage the indoor unit and can cause reduced
cooling performance, intermittent system operation, frost
build-up on the indoor coil, and blown fuses.
Inspect and clean or replace the air filters monthly.
The system may be pumped down in order to make repairs on the
low side without losing complete refrigerant charge.
1. Attach pressure gage to suction service valve gage port.
2. Front -seat the mixed phase line valve.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation. The unit coils hold only the
factory -designated amount of refrigerant.
Additional refrigerant may cause units to relieve pressure
through the compressor internal pressure relief valve (indicated
by a sudden rise of suction pressure) before suction pressure
reaches 20 psig.
If this occurs, shut off unit immediately then front -seat the
suction valve and remove and recover excess refrigerant
following accepted practices.
3. Start unit and run until suction pressure reaches 5 psig.
4. Shut unit off and front -seat suction valve.
5. Depressurize low side of unit and recover refrigerant
following accepted practices.
Filter Drier
Whenever the filter drier is exposed to the atmosphere it must be
replaced. Only use factory specified liquid -line filter driers with
rated working pressures less than 600 psig.
NOTE: Do not install a suction -line filter drier in the mixed phase
line.
REFRIGERANT CHARGING
PERSONAL INJURY AND/OR EQUIPMENT DAMAGE
HAZARD
Failure to follow this warning could result in personal injury
and/or equipment damage. Wear safety glasses and gloves
when handling refrigerant. Do not overcharge system - this
can cause compressor flooding.
All units are shipped with the refrigerant charge listed on
nameplate.
NOTE: Do not vent or depressurize unit refrigerant to
atmosphere. Remove and recover refrigerant following
accepted practices.
23
TROUBLESHOOTING
Fault code
For ease of service, the indoor unit is equipped with diagnostic code display LEDs in the indoor units. This diagnostic display is a
combination of flashing LEDs on the display panel or the front of the unit. If possible, always check the diagnostic codes displayed on the
indoor unit. The diagnostic codes displayed in the indoor unit are listed in Table 21. Once a failure occurs with the indoor unit in operation,
the green LED on the indoor unit flashes at intervals of 0.5 seconds. The fault code is deduced from the number of times the green LED
flashes, blocking unit operation. Between one flash cycle and the next one, a pause of 3 to 4 seconds elapses.
Table 22 — Fault Codes
DEFROSTING
DISPLAY
NO.
MALFUNCTION
RUNNING LAMP
TIMER LAMP
LAMP
ALARM LAMP
(DIGITAL TUBE)
1
Open or short circuit of T1
X
X
X
E2
temperature sensor
2
Open or short circuit of T2
X
X
X
E3
temperature sensor
3
Indoor EEPROM
X
X
E7
4
Water —level alarm
X
X
X
E8
5
Refrigerant leakage detection
X
X
EC
NOTE: O (on) X(off) *(flash at 511z) OO (flash at 0.511z)
Using the Emergency Button
The Emergency button is for use by a qualified service technician only. The Emergency button is for use when the room controller is
inoperative. Use a small screwdriver to press the emergency button through the metal protection grille.
Access Manual Operation by pressing manual button on the display panel. Press the manual button repeatedly to change modes as follows:
• Once = AUTO mode [heat, cool or fan, 24°C and auto fan speed.]
• Twice = COOLING mode [switches to AUTO mode after 30 minutes (mainly used for trial operation)]
• Three times = OFF
24
Table 23 — Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
Compressor and Fan of the Outdoor
Unit Will Not Start
Unit not energized
Check the main power connection.
Main switch is set to OFF
Check and put it to ON position.
Main switch fuses are blown
Replace fuses.
Compressor cycling protection is on
Wait for 3 minutes.
Main power voltage is too low
Check and set to the correct voltage.
Electrical connections are too loose or are wrong
Check and tighten or correct connections.
Compressor Will Not Start, But
Outdoor Fan is Operating
Electrical connections of compressor are loose or
wrong
Check and tighten or repair compressor.
Compressor Stops Due to
Over -temperature
Compressor burnt out; seized or protection device
on
Check for the cause and replace compressor if
necessary.
Wrong refrigerant charge in unit (excessive or low)
or air or other non -condensable gasses in the
circuit
Drain refrigerant, evacuate and recharge.
CAUTION: Do not vent refrigerant to the atmosphere; use
refrigerant recovery equipment.
Main voltage is too high or too low
Check voltage setting and adjust if necessary.
Condenser coil obstructed
Remove obstruction.
Outdoor fan off
Check cause and resume operation or repair.
Wrong indoor unit thermistors
Replace thermistors.
Refrigerant circuit clogged
Check and remove obstructions.
Reversing valve faulty on heat pump models
Replace reversing valve.
Expansion device clogged or covered with ice
Drain refrigerant, evacuate and recharge.
CAUTION: Do not vent refrigerant to the atmosphere; use
refrigerant recovery equipment.
Compressor Runs Continuously
Unit selected is too small for application
requirements
Contact a qualified service technician for a system
evaluation.
Indoor temperature setting too low or too high
Check temperature setting.
Outdoor unit fan faulty
Replace outdoor fan.
Air or other non -condensable gasses in the
circuit
Drain refrigerant, evacuate and recharge.
CAUTION: Do not vent refrigerant to the atmosphere; use
refrigerant recovery equipment.
Obstructions at air intake or dirty indoor unit filters
Remove obstruction and/or clean filter.
Frequent Ice -Build -Up on Outdoor
Coil
Outdoor fan is stopped
Check cause and repair.
Discharge Pressure Too High
Outdoor coil dirty or obstructed
Clean or remove obstructions.
Condenser fan faulty
Replace condenser fan.
Indoor temperature setting too low or too high
Check temperature setting.
Air or other non -condensable gasses in the
circuit
Drain refrigerant, evacuate and recharge.
CAUTION: Do not vent refrigerant to the atmosphere; use
refrigerant recovery equipment.
Discharge Pressure Too Low
Indoor temperature setting too high or too low
Check temperature setting.
Outdoor coil dirty or obstructed
Clean or remove obstructions.
Indoor unit air filter dirty
Clean filter.
Suction Pressure Too High
Indoor temperature setting too high or too low
Check temperature setting.
Reversing valve faulty or internal leak
Replace reversing valve.
Suction Pressure Too Low
Indoor temperature setting too high or too low
Check temperature setting.
Evaporator coil covered with ice
Air circulation on the evaporator not sufficient; check and
repair.
Expansion device or suction line clogged
Check and repair.
Outdoor fan does not stop during defrost periods
Check electrical parts.
Outdoor Fan Cycling Due to
Over -Temperature Protection
Electrical connection loose
Check connections.
Fan motor burn out
Replace.
Fan bearing seized
Check and repair.
Expansion device clogged or covered with ice
Drain refrigerant, evacuate and replace.
CAUTION: Do not vent refrigerant to the atmosphere; use
refrigerant recovery equipment.
NOTE: For additional diagnostic information, refer to the Service Manual.
25
Copyright 2015 CAC / BDP • 7310 W. Morris St. • Indianapolis, IN 46231 Edition Date: 10/15
Catalog No:40MKC(Q)B—F-02SI
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
26
Replaces: 40MKC(0)B—F-01 SI