CAC / BDP 40MKCB**F/24AHA4, 40MKCB**F/124ANS, 40MKQB**F/25HHA4, 40MKQB**F/224ANS Installation Instructions Manual

40MKCB**F/24AHA4
40MKCB**F/124ANS
40MKQB**F/25HHA4
40MKQB**F/224ANS
Under Ceiling/Floor Conso le Ductless Split
Sizes 18 to 54

Installation Instructions

TABLE OF CONTENTS
SAFETY CONSIDERATIONS 1
PARTS L IST 2
DIMENSIONS -- INDOOR 3
DIMENSIONS -- OUTDOOR 4
CLEARANCES -- INDOOR 6
CLEARANCES -- OUTDOOR 6
SYSTEM REQUIREMENTS 6
INSTALLATION 8
INSTALL INDOOR UNIT 8
INSTALL OUTDOOR UNIT 11
ELECTRICAL DATA 15
START--UP 19
TROUBLESHOOTING 22

Fig. 1 -- Indoor Unit, Outdoor Unit, and Remote Control

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 ava i lable. 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 Electrical 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 inj ury. 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 personal injury or product and propert y damage.

!

!

NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.

!

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.

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.

PARTS L IS T

TXV Kit

The under ceiling/ f loor console type unit and horizontal disc harge unit
(24AHA/124ANS and 25HHA4/224ANS) installa t i on would not be
comple t e without the addition of the TXV kit. This can be found in
the packagi ng of the indoor unit. If you do not have this kit, order the
kit and insta ll the outdoor and indoor units when this is a vailabl e.

Below are figures that s how how the kit looks and where it is included
within the indoor unit pa ckaging.

Liquid pipe

Gas pipe

Refrigerant
flow direction

!

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

Nominal

System Type

Coolin g

Only

Heat

Pump

Capacity

kBTU/Hr

018 24AHA418A003 124ANS018000 40MKCB18F-- -- 3

024 24AHA424A003 124ANS024000 40MKCB34F-- -- 3

030 24AHA430A003 124ANS030000 40MKCB34F-- -- 3

034 24AHA436A003/5/6 124ANS036000 40MKCB34F-- -- 3

054 24AHA448A003/5/6 124ANS048000 40MKCB54F-- -- 3

030 25HHA430A003 224ANS030000 40MKQB36C---- 3

036 25HHA436A003/5/6 224ANS036000 40MKQB36C-- --3

048 25HHA448A003/5/6 224ANS048000 40MKQB48C-- --3

Outdoor Unit Indoor Unit

A150289

Fig. 2 -- TXV Kit

TXV kit inside carton box

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

Owner’s Manual 1 Guide for the homeowner
Warranty card 1 Warranty information
Installation instructions 1 Guide to install the unit

Clamp filter 2

Remote Controller 1 Controls the indoor unit

Remote Controller Holder 1

Tapped Screw 2

Battery 2 Powers the remote controller

Strain Relief Bracket 1

Screws 4 To affix strain relief bracket

Qty. Usage

For conforming to EMC
standards on connecting
wires

Holds the remote controller
on the wall

Used to fix the remote
controller holder

To affix strain relief to hold
wires in place

2

Outdoor Unit

The following items are included with the outdoor unit:

Fig. 4 -- 24AHA/124ANS

DIMENSIONS - INDOOR

Unit:

A09536

Fig. 5 -- 25HHA4/224ANS

Table 3 – Outdoor Unit Parts Checklist

Model

24AHA4/124ANS n
25HHA4/224ANS n n n n

Filter
Drier

Piston

Cap

Pistons

Flare

Connector

H

A09537

Bracket:

D

W

W

Hook

D

A0150266

Fig. 6 -- 440MKCB**F, 40MKQB**F Unit and Bracket Dimensions

Indoor Unit Size

BTU/Hr

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)

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) -

Height (H)

in (mm)

Table 4 – Dimensions Indoor

Width (W)

in (mm)

3

Depth (D)

in (mm)

Operating Weight

lb (kg)

DIMENSIONS -- OUTDOOR

NOTE:

S Center of Gravity
S All dimensions are in “inches” unless noted.

MINIMUM

UNIT SIZE

18,24 23” x 42”

30,36,48 24” x 50”

MOUNTING PAD

DIMENSIONS

Fig. 7 -- Outdoor Unit Dimensions

4

Table6–Dimensions(ACs)

Table7–DimensionsSI(ACs)

Table 8 – Dimensions (HPs)

Table9–DimensionsSI(HPs)

2

124ANS018000/

124ANS024000/

124ANS030000/

124ANS036000/

124ANS048000/

124ANS018000/

124ANS024000/

124ANS030000/

124ANS036000/

124ANS048000/

5

224ANS048000/

224ANS030000/

224ANS036000/

224ANS030000/

224ANS036000/

224ANS048000/

CLEARANCES -- INDOOR

≥35mm

≥ 35mm

Fig. 8 – 40MKCB**F, 40MKQB**F Unit Clearance

CLEARANCES -- OUTDOOR

1. Single Unit Applications: With coil facing wall: Allow 6”
(152.4mm) minimum cleara nce on coi l side and coil end and
20” (504.0 mm) minimum cl earance 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 clea r 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 r ance
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 . Al low
24” (609.6 mm) minimum clea rance on compre ssor 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.

≥ 35mm

≥1000mm

A0150267

SYSTEM REQUIREMENTS

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 9 for the maximum lengths allowed.

Table 9 – Maximum Refrigerant Line Lengths

Sizes (in)

Max Elevation
(OD over ID) ft

(m)ft(m)

OutdoorUnit Tube

5/8

3/8

Size (in)

5/8

Unit Size

18K -54K 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 ODft (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 below for a complete list of tube sizes to
identify coupling needs. Refer to Table 10 for pipe sizes.

Table10–PipeSizes

Indoor Units OutdoorUnits

40MKCB18F-- --3

40MKCB34F-- --3

40MKCB34F-- --3

40MKCB34F-- --3

40MKCB54F-- --3

40MKQB36F-- --3

40MKQB36F-- --3

40MKQB48F-- --3

24AHA418

124ANS018

24AHA424

124ANS024

24AHA430

124ANS030

24AHA436

124ANS036

24AHA448

124ANS048

25HHA430224A

NS030

25HHA436

224ANS036

25HHA448

224ANS048

Indoor Unit Tube

Sizes (in)

Liquid Vap o r Liquid Vap o r Liquid Vap o r

3/8

TXV Kit Tube

5/8

3/4 3/4 3/4

3/4 3/4 3/4

3/4 3/4 7/8

3/8

3/4 7/8 7/8

3/4 3/4 3/4

3/4 3/4 7/8

3/4 7/8 7/8

Note:Both lines need to be insulated using at le ast 1/2 inch closed

foam insulation.

6

Condensate Drain Pipe Sizes

Refer to table 11 for the required sizes.

Table 11 – Drain Pipe Sizes

Unit Size

18K-54K 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**F or 40MKQB**F units. Charge to
Sub--cooling Delta from Rating Plate V alue as stated below.

Table 12 – Charge Requirements

Nominal

System

Type

Cooling

Only

Heat

Pump

Capacity

kBTU/Hr

018 24AHA418A003 124ANS018000 40MKCB18F---- 3 12

024 24AHA424A003 124ANS024000 40MKCB34F---- 3 12

030 24AHA430A003 124ANS030000 40MKCB34F---- 3 12

034 24AHA436A003/5/6 124ANS036000 40MKCB34F-- --3 8

054 24AHA448A003/5/6 124ANS048000 40MKCB54F-- --3 12

030 25HHA430A003 224ANS030000 40MKQB36C-- --3 11

036 25HHA436A003/5/6 224ANS036000 40MKQB36C----3 14

048 25HHA448A003/5/6 224ANS048000 40MKQB48C----3 11

Outdoor Unit Indoor Unit

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.

Charge to

Sub--cooling

Delta from Rating

Plate Val ue

Communication Wiring:

A separate shielded copper conductor only with a minimum 300 volt
rating and 2/64 inch thick insulation must be used as the
communic ation wire from the outdoor unit to the indoor unit. To
minimi ze voltage drop of the communication wire, use the wire size
and maximum lengths shown in table 14.

Table 14 – Maximum Wire Lengths

Wire Size Length ft. (m)

18AWG 50 ft. (15 m)
16AWG 50 ft. (15 m) to 100ft. (30 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 minimum 300 volt
rating and 2/64 inch thick insulation.

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

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 13 for a breakdown of each unit’s metering devices.

Table 13 – Metering Devices

System Size

kBTU/hr

018 TXV - ­024 TXV - ­030 TXV TXV 0.055"
034 TXV - ­054 TXV - ­036 - TXV 0.063"
048 - TXV 0.073"

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 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 ar e high voltage AC power and one is a ground wire.
Consult your loca l building codes and the NEC (National Electr ical
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
(maxi mum over current protect ion) to correctly size the wires and the
disconnect fuse or breakers respectively.
Per caution note, only copper conductors with a minim um 300 volt
rating and 2/64--inch thick insulat i on must be used.

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 Opera ting 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.

7

INSTALLATION

COMPLETE PRE--INSTALLATION CHECKS

1. Unpack Unit -- Store the indoor and outdoor units in the
original packaging until it is moved to the final site for
installat ion. When unpacking indoor unit, be ca reful not to lift
unit by condensate drain discha rge pipe or by refrigerant
connections.

2. Inspe ct Shipment -- Upon receipt of shipment, check the
indoor and outdoor units for damage. If there is any damage,
forwa r d claim papers directly to the transport ation company .
Manufa cturer is not responsi ble for damage incurred in transi t.

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 9.

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.

2. TXV Installation

S 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.

S 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.

CAUTION

CAUTION

Outdoor unit
connection

INSTALL INDOOR UNIT

Plan the installation carefully before you begin.

1. Select indoor unit location.

S A location where there are no obstacles near inlet and

outlet area.

S A location that can bear the weight of the unit.

S Do not install indoor units near a direct source of heat

such as direct sunlight or a heating appliance.

S Do not install units too close to humid conditions.

S Where an optimum air distribution is ensured.
S Where the condensate can drain correctly and safely.

S Maintain sufficient clearance around the indoor unit for

maintenance and servicing.

S Where the air filter can be removed and cleaned easily.

S Where the piping between the indoor and outdoor units

is within the allowable limits.

S 1m or more away from the TV or radio to prevent the

screen from being distorted or noise from being
generated.

S As far away as possible from fluorescent and incandes-

cent lights so that the remote control can be operated
well.

Indoor unit
connection

Outdoor unit
connection

Indoor unit
connection

Arrows on TXV label pointing

upward and to the right

Fig. 9 – Allowed TXV installation direction per label attached

To

indoor

unit

Fig. 10 – TXV

Arrows on TXV label pointing

upward and to the left

to TXV

Refrigerant
flow direction

To

outdoor

unit

8