40MKCB**C/24AHA4
40MKCB**C/124ANS
40MKQB**C/25HHA4
40MKQB**C/224ANS
Cassette Ductless Split
Sizes 18 to 34
Installation Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 1
PARTS LIST 2
DIMENSIONS -- INDOOR 4
DIMENSIONS -- OUTDOOR 5
CLEARANCES -- INDOOR 7
CLEARANCES -- OUTDOOR 7
SYSTEM REQUIREMENTS 7
INSTALLATION 9
INSTALL INDOOR UNIT 9
INSTALL OUTDOOR UNIT 12
ELECTRICAL DATA 16
START--UP 20
TROUBLESHOOTING 23
Fig. 1 -- Indoor Unit, Outdoor Unit, and Remote Contro l
NOTE: Read the entire instruction manual before starting the
installation.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
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 brazi ng operations . Have a fire
extingui sher avai l able. Read these instruct ions 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 Electrica l Code ( NEC ) NFP A 70. In Canada, refer to
current editions of the Canadian electrical code CSA 22.1.
Recognize safet y information. This is the safety--alert symbol
When you see this symbol on the unit and in instruct ions or manuals ,
be alert to the potential for personal injury. Underst and these signal
words; DANGER, WARNING,andCAUTION. 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 persona l injury or product and proper t y damage .
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!
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
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WARNING
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.
!
CAUTION
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.
PARTS LIST
Indoor Unit
Kit
TXV
The casse t t e type unit and horizontal discharge unit (24AHA/124ANS
and 25HHA4/224ANS) install ation 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 of the kit and how and where the kit is included
within the indoor unit packaging.
Liquid pipe
Gas pipe
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.
!
CAUTION
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.
!
CAUTION
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
Cooling
Only
Heat
Pump
Nominal
Capacity
KBTU/Hr
018 24AHA418A003 124ANS018000 40MKCB18C--3
024 24AHA424A003 124ANS024000 40MKCB34C--3
030 24AHA430A003 124ANS030000 40MKCB34C--3
034 24AHA436A003/5/6 124ANS036000 40MKCB34C--3
024 25HHA424A003 224ANS024000 40MKQB34C--3
030 25HHA430A003 224ANS030000 40MKQB34C--3
034 25HHA436A003/5/6 224ANS036000 40MKQB34C--3
Outdoor Unit Indoor Unit
Refrigerant
flow direction
Fig. 2 -- TXV Kit
Flexible pipings
(Field)
Flexible pipings
(Field)
TXV Kit
TXV Kit
Fig. 3 -- TXV Kit (within packaging of indoor unit)
A150289
A150286
2
Table 2 – Indoor Units Parts List
Name o f Part
Qty. Usage
Owner’s Manual 1 Guide for the homeowner
Warranty card 1 Warranty information
Installation instructions 1 Guide to install the unit
Pipe insulation Material 1
Insulation for refrigerant
piping
For conforming to EMC
Clamp filter 2
standards on connecting
wires
Flexible hose 1
Pipe clamp 1
Drains moisture from inside
the indoor unit
Fixes the flexible hose to the
indoor unit
Remote Controller 1 Controls the indoor unit
Remote Controller holder 1
Tapped Screw 2
Holds the remote controller
on the wall
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
Cassette Cover Panel
A cassette grille/panel is required to complete installation of indoor
unit. The indoor unit installa t ion would not be compl ete without the
addition of this grille. Order it and complete installation when you
have the grille available. The grille model number is:
40MK--B01C----3.
Outdoor Unit
The following items are included with the outdoor unit:
Fig. 5 -- 24AHA/124ANS
Fig. 6 -- 25HHA4/224ANS
Table 3 – Outdoor Unit Parts Checklist
Model
24AHA4/124ANS n
25HHA4/224ANS n n n n
Filter
Drier
Piston
Cap
Pistons
A09536
A09537
Flare
Connector
Fig. 4 -- Cassette Grille/Panel
3
DIMENSIONS - INDOOR
Cassette Grille
Cassette Body
Drain pipe
connector
H
W
Refrigerant pipe
connector
H
D
Fresh air intake (
W
Φ75mm)
Fig. 7 -- 40MKC**C, 40MKQ**C Unit and Panel Dimensions
Table 4 – Dimensions Indoor
Indoor Unit Size
BTU/Hr
18K 33.1 (840) 33.1 (840) 8.1 (205) 54.0 (24.5)
24K – 34K 33.1 (840) 33.1 (840) 11.3 (287) 68.6 (31.1)
Cassette Panel 37.4 (950) 37.4 (950) 2.2 (55) 11.0 (5)
Height (H)
in (mm)
Width (W)
in (mm)
Depth (D)
in (mm)
Operating Weight
lb (kg)
A150291
4
DIMENSIONS -- OUTDOOR
NOTE:
S Center of Gravity
S All dimensions are in “inches” unless noted.
MINIMUM
UNIT SIZE
18,24 23” x 42”
30,36 24” x 50”
MOUNTING PAD
DIMENSIONS
Fig. 8 -- Outdoor Unit Dimensions
5
227
103.0
89.4
197
22.2
Table6–Dimensions(ACs)
Table7–DimensionsSI(ACs)
Table 8 – Dimensions (HPs)
Table9–DimensionsSI(HPs)
XX0
6 X
124ANS024000/
12ANS030000/
124ANS018000 /
124ANS036000/
124ANS018000
124ANS036000
124ANS024000
124ANS030000
6
224ANS024000/
224ANS030000/
224ANS036000/24HHAA436 0 X XX
224ANS024000/
224ANS030000/
224ANS036000/
CLEARANCES -- INDOOR
Fig. 9 -- 40MKC**B, 40MKQ**B Unit Clearance
A150152
CLEARANCES -- OUTDOOR
1. Single Unit Applications: With coil facing wall: Allow 6”
(152.4mm) minimum clearance on coil side and coil end and
20” (504.0 mm) minim um 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 mm)
minimum clear ance on coil side. Allow 24” (609.6 mm)
minimum clearance on compressor end for service when units
are stacked or there is less than 40” (1016 mm) of clea rance
above the unit. If there is 40” (1016 mm) clearanc e 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 clea rance on compressor end when
units are stacke d or ther e 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.
SYSTEM REQUIREMENTS
Clearances
Allow sufficient space around the indoor and outdoor unit for
proper airflow circulation and servicing. Refer to Fig.9 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 9 for the maximum lengths allowed.
Table 9 – Maximum Refrigerant Line Lengths
Unit Size
18K-34K 250 (76.2) 65 (19.8) 200 (61)
Note:Forlengthsgreaterthan25ft(7.6m),refertotheResidential Long
Line Guide.
Max Line
Length* ft(m
Max Elevation
(ID over OD)
ft(m)
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 10 for complete list of tube sizes to identify
coupling needs.
Table10–PipeSizes
Indoor Unit Tube
Indoor Unit Outdoor Unit
40MKCB18C-- -- 3
40MKCB34C-- -- 3
40MKCB34C-- -- 3
40MKCB34C-- -- 3
40MKQB34C-- --3
40MKQB34C-- --3
40MKQB34C-- --3
Note:Both line s need to be insulated using at least 1/2 inch closed foam
insulation.
24AHA418
124ANS018
24AHA424
124ANS024
24AHA430
124ANS030
24AHA436
124ANS036
25HHA424
224ANS024
25HHA430
224ANS030
25HHA436
224ANS036
Sizes (in)
Liquid Vap o r Liquid Va po r Liquid Vap o r
3/8
TXV Kit Tube
Sizes (in)
5/8
3/4 3/4 3/4
3/4 3/4 3/4
3/4 3/4 7/8
3/4 3/4 3/4
3/4 3/4 3/4
3/4 3/4 7/8
5/8
3/8
Max
Elevation (OD
overID)ft(m)
Outdoor Unit
Tube Size (in)
5/8
3/8
7
Condensate Drain Pipe Sizes
Refer to table 11 for the required sizes.
Table 11 – Drain Pipe Sizes
Indoor Unit Size
BTU/Hr
18K 1 (25.4)
24K – 34K 1 (25.4)
Outside Diameter
in (mm)
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**C or 40MKQB**C units. Charge to
Sub--cooling Delta from Rating Plate Value as stated below.
Table 12 – Charge Requirements
System
Type
Cooling
Only
Heat
Pump
Nominal
Capacity
kBTU/Hr
018 24AHA418A003 124ANS018000 40MKCB18C-- --3 12
024 24AHA424A003 124ANS024000 40MKCB34C-- --3 12
030 24AHA430A003 124ANS030000 40MKCB34C-- --3 12
034 24AHA436A003/5/6 124ANS036000 40MKCB34C----3 8
024 25HHA424A003 224ANS024000 40MKCB34C-- --3 14
030 25HHA430A003 224ANS030000 40MKCB34C-- --3 11
034 25HHA436A003/5/6 224ANS036000 40MKCB34C----3 14
Outdoor Unit Indoor Unit
Charge to
Sub--cooling Delta
from Rating Plate
Val u e
NOTE: The above additional charge is required amount for
line lengths up to 25 ft. (7.6 m). For line lengths exceeding 25 ft
(7.6 m), additional charge will be required. Refer to the
Residential Long Line Guide.
Metering Device
The 40MKC(Q)*C unit uses a TXV while the outdoor unit uses a
type B accurator. The cooling metering device is installed with the
indoor unit. 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 13 for a breakdown of each unit’s metering devices.
Table 13 – Metering Devices
System Size
kBTU/hr
018 TXV - 024 TXV TXV 0.049"
030 TXV TXV 0.055"
034 TXV TXV 0.063"
Cooling Only Heat Pumps
40MKCB**C 40MKQB**C 25HHA4/224ANS
Power and Connecting Cables -- Field Supplied
Recommended Connection Method for Power and
Communication Wiring (To minimize communication
wiring interference)
Power W
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.
iring:
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. To
minimize voltage drop of the communication wire, use the wire
size and maximum lengths shown in Table 14.
Table 14 – Maximum 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)
!
CAUTION
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.
S Wall mounted control.
Operating Range
Ensure that the system operates within the application guidelines
shown in the following tables.
Table 15 – Cooling Operating Range
Maximum Minimum
Outdoor
Unit
Indoor Unit 90 (32) - 64 (18) -
DB °F (° C) WB °F (°C) DB °F (°C) WB °F (°C)
125 (51.7) - 55 (12.8) -
Table 16 – Heating Operating Range
Maximum Minimum
Outdoor
Unit
Indoor Unit 80(27) 32 (0) -
DB °F (° C) WB °F (°C) DB °F (°C) WB °F (°C)
75 (23.9) 67 (19.4) 17 (-8.3) -
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.
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