Toshiba Carrier MMD-AP0074SPH2UL, Carrier MMD-AP0124SPH2UL, Carrier MMD-AP0154SPH2UL, Carrier MMD-AP0184SPH2UL, Carrier MMD-AP0094SPH2UL Installation Manual
AIR CONDITIONER (MULTI TYPE)
Installation Manual
Indoor Unit
Model name:
Slim Duct Type
MMD-AP0074SPH2UL
MMD-AP0094SPH2UL
MMD-AP0124SPH2UL
MMD-AP0154SPH2UL
MMD-AP0184SPH2UL
For commercial use
Pour usage commercial
Installation Manual 1
Manuel d’installation 22
English
Français
–1–
Please read this Installation Manual carefully before installing the Air Conditioner.
• This Manual describes the installation method of the indoor unit.
• For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner uses R410A an environmentally friendly refrigerant.
Contents
1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Accessory parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Selection of installation place. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5 Drain piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
6 Duct design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
7 Refrigerant piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9 Applicable controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10 Test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1-EN 2-EN
1 Precautions for safety
Installing, starting up, and servicing air--conditioning equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install, start--up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning heat exchanger. All other
operations should be performed by trained service personnel.
Before working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached
to the equipment.
Follow all safety codes.Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby
during brazing. Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the
unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety
information. This is the safety--alert symbol . When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING
signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability, or operation.
The manufacturer shall not assume any liability for the damage caused by not observing the description of this
manual.
WARNING
• Only a qualified installer or service person is allowed to do installation work.
Inappropriate installation may result in water leakage, electric shock or fire.
• Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a
failure or explosion of the product or an injury to your body.
• Connect ground wire. (grounding work)
Incomplete grounding may cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.
• Turn off all the circuit breaker before attempting any electrical work.
Failure to do so may cause electric shock.
• Install the refrigerant pipe securely during the installation work before operating the air conditioner.
If the air conditioner is operated with the valve open and without the refrigerant pipe, the compressor sucks air and
the refrigeration cycle is overpressurized, which may cause a burst or injury.
• When moving the air conditioner for the installation into another place, do not enter any gaseous matter
other than the specified refrigerant into the refrigeration cycle.
If air or any other gas is mixed in the refrigerant, the gas pressure in the refrigeration cycle becomes abnormally high
and it resultingly causes pipe burst and injuries on persons.
• Perform installation work properly according to the Installation Manual.
Inappropriate installation may result in water leakage, electric shock or fire.
• When the air conditioner is installed in a small room, provide appropriate measures to ensure that the
concentration of refrigerant leakage occur in the room does not exceed the critical level.
• Install the air conditioner securely in a location where the base can sustain the weight adequately.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
• Install the air conditioner at a height 8’ (2.4 m) or more from the floor.
If you insert your hands or others directly into the unit while the air conditioner operates, it is dangerous because you
may contact with revolving fan or active electricity.
• If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas might
generate.
• Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Use
an exclusive power supply for the air conditioner at the rated voltage.
An insufficient power supply capacity or inappropriate installation may cause fire.
• Use the specified wires for wiring connect the terminals. Securely fix them to prevent external forces applied
to the terminals from affecting the terminals.
• Conform to the regulations of the local electric company when wiring the power supply.
• For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the
compressor before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor sucks air
and the refrigeration cycle is overpressurized, which may cause a burst or injury.
• Before carrying out the installation, maintenance, repair or removal work, set the circuit breaker to the OFF
position.
Otherwise, electric shocks may result.
• Do not touch the aluminium fin of the unit. You may injure yourself if you do so. If the fin must be touched
for some reason, first put on protective gloves and safety work clothing, and then proceed.
• Install the air conditioner securely in a location where the base can sustain the weight adequately. If the
strength is not enough, the unit may fall down resulting in injury.
• The unit can be accessed from the service panel.
• Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the
local regulations and laws.
• Install the circuit breaker where it can be easily accessed by the agent.
• Under no circumstances the power wire must not be extended. Connection trouble in the places where the
wire is extended may give rise to smoking and/or a fire.
• Upon completion of the installation work, tell the user where the circuit breaker is located. If the user does
not know where the circuit breaker is, he or she will not be able to turn it off in the event that trouble has
occurred in the air conditioner.
CAUTION
• This air conditioner adopts the new HFC refrigerant (R410A) which does not destroy ozone layer.
• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installa tion work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in
refrigerant leakage.
• Wear heavy gloves during the installation work to avoid injury.
2 Accessory parts
Part name Q’ty Shape Usage
Installation Manual 1 This manual (Hand over to customers)
Heat insulating pipe 2 For heat insulation of pipe connecting section
Washer 8 For hanging-up unit
Hose band 1 For connecting drain pipe
Flexible hose 1 For adjustment of drain pipe centering
Heat insulator 1 For insulating drain connecting section
1
Drain socket
1
Banding band 2 For fixing of pipe connecting heat insulator
Air intake port flange 1 For connecting a duct when air intake is from the back
For connect drain pipe
EN
3-EN 4-EN
–2–
–3–
3 Selection of installation place
Avoid installing in the following places
Select a location for the indoor unit where the cool or warm air will circulate evenly.
Avoid installation in the following kinds of locations.
• Saline area (coastal area).
• Locations with acidic or alkaline atmospheres (such as areas with hot springs, factories where chemicals or
pharmaceuticals are made and places where the exhaust air from combustion appliances will be sucked into the
unit).
Doing so may cause the heat exchanger (its aluminum fins and copper pipes) and other parts to become
corroded.
• Locations with atmospheres with mist of cutting oil or other types of machine oil.
Doing so may cause the heat exchanger to become corroded, mists caused by the blockage of the heat
exchanger to be generated, the plastic parts to be damaged, the heat insulators to peel off, and other such
problems to result.
• Locations where vapors from food oils are formed (such as kitchens where food oils are used).
Blocked filters may cause the air conditioner’s performance to deteriorate, condensation to form, the plastic parts
to be damaged, and other such problems to result.
• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior
of the air conditioner, it may spontaneously combust and start a fire.
• Locations near obstructions such as ventilation openings or lighting fixtures where the flow of the blown air will
be disrupted (a disruption of the air flow may cause the air conditioner’s performance to deteriorate or the unit to
shut down).
• Locations where an in-house power generator is used for the power supply.
The power line frequency and voltage may fluctuate, and the air conditioner may not work properly as a result.
• On truck cranes, ships or other moving conveyances.
• The air conditioner must not be used for special applications (such as for storing food, plants, precision
instruments or art works).
(The quality of the items stored may be degraded.)
• Locations where high frequencies are generated (by inverter equipment, in-house power generators, medical
equipment or communication equipment).
(Malfunctioning or control trouble in the air conditioner or noise may adversely affect the equipment’s operation.)
• Locations where there is anything under the unit installed that would be compromised by wetness.
(If the drain has become blocked or when the humidity is over 80 %, condensation from the indoor unit will drip,
possibly causing damage to anything underneath.)
• In the case of the wireless type of system, rooms with the inverter type of fluorescent lighting or locations
exposed to direct sunlight.
(The signals from the wireless remote control may not be sensed.)
• Locations where organic solvents are being used.
• The air conditioner cannot be used for liquefied carbonic acid cooling or in chemical plants.
• Location near doors or windows where the air conditioner may come into contact with high-temperature, highhumidity outdoor air.
(Condensation may occur as a result.)
• Locations where special sprays are used frequently.
Installation under high-humidity atmosphere
In some cases including the rainy season, especially inside of the ceiling may become high-humidity atmosphere
(dew-point temperature: 73 °F (22.8 °C) or higher).
1. Installation to inside of the ceiling with tiles on the roof
2. Installation to inside of the ceiling with slated roof
3. Installation to a place where inside of the ceiling is used for pathway to intake the fresh air
4. Installation to a kitchen
• In the above cases, additionally attach the heat insulator to all positions of the air conditioner, which come to
contact with the high-humidity atmosphere. In this case, arrange the side plate (Check port) so that it is easily
removed.
• Apply also a sufficient heat insulation to the duct and connecting part of the duct.
[Reference] Condensation test conditions
Indoor side:
Air volume: Low air volume, operation time 4 hours
80 °F (26.7 °C) dry bulb temperature
75 °F (23.9 °C) wet bulb temperature
Preparation before installation
CAUTION
The air intake port flange is attached upside down for product protection during shipping. Be sure to reattach the flange
in the correct orientation in order to connect to the duct.
During shipping To install (correct orientation)
Flange Flange
Indoor unit Indoor unit
Screw (10 pieces)
5-EN 6-EN
Installation space Unit: in (mm)
Reserve sufficient space required for installation or service work.
The indoor unit does not have a built-in air filter.
The type of air filters required will be specified by applicable codes and requirements for the indoor unit installation.
All filters are locally procured.
Always install the air filter (Local procure) in a location that permits easy maintenance, such as behind the intake
grille. (If no air filter is installed, dust will collect in the heat exchanger, which may cause the air conditioner to fail
or to leak.)
CAUTION
Leave sufficient space to remove the air filter when you attach it.
Service space Unit: in (mm)
Reserve sufficient space required for installation or service work.
Air discharge
Ceiling
2” (50)
39.2” (995)
3.9” (100)
29.3” (745)
Ceiling opening size
<Under air intake>
<Back air intake>
Air discharge
3.9” (100) or more
Ceiling
Ceiling
Air intake
15.8” (400) or
more
0.2” (5) or
more
8.3” (
3.9” (100) or more
Air intake
11.8” (300) or more
0.2” (5) or more
8.3” (
210)
210)
11.2” (285) or more
0.2” (5) or more
8.3”
9.3” (235) or
(
210)
more
29.3” (745)
39.2” (995)
Filter cleaning sign term setting
The lighting term setup of the filter sign (Notification of filter cleaning) of the remote control can be changed
according to the condition of installation.
For setup method, refer to “Filter sign setting” in the Applicable controls of this Manual.
EN
7-EN 8-EN
–4–
4 Installation
–5–
WARNING
• Install the air conditioner certainly at a place to sufficiently withstand the weight.
• If the strength is insufficient, the unit may fall down resulting in human injury.
• Perform a specified installation work to guard against an earthquake.
• An incomplete installation can cause accidents by the units falling and dropping.
• Do not install the indoor unit in the way that it takes in the air in the ceiling and provides it into the room. The indoor
unit must be installed in the way that it takes in the air from the room and returns it back to the room.
GOOD NO GOOD NO GOOD
CAUTION
Strictly comply with the following rules to prevent damage of the indoor units and human injury.
• Do not put a heavy article on the indoor unit or let a person get on it. (Even units are packaged)
• Carry in the indoor unit as it is packaged if possible. If carrying in the indoor unit unpacked by necessity, use buffering
cloth or other material to not damage the unit.
• To move the indoor unit, hold the hooking brackets (4 positions) only.
Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, resin parts or other parts).
• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specified.
• To install vibration isolation material to hanging bolts, confirm that it does not increase the unit vibration.
1 room
• This unit and it’s ducting (supply and return air) are intended for use in one room only.
External dimensions Unit: in (mm)
Fresh air intake
(knock-out hole)
3.1”
(80)
3.3”
(59)
3
∅
4-∅0.2”(4)
)
2
9
(
”
6
.
3.1”
(80)
5.7”
(145)
(outside)
6.8”(171.4)
0.8”
0.8”(19.3)
(19.30)
0.8”(20)
0.8”(20)
0.8”
(20)
Unit external dimension 33.3”(845)
Air discharge flange outside
31.7”(805)
Hanging bolt pitch 35.8”(910)
0.8”(20)
2.2”(57)
2.6”
Hanging bolt pitch
2.6”
8.3”(210)
(67)
20.1”(511)
(67)
Refrigerant pipe
connecting port ∅B
4.1”(103)
1.2”(31)
14.1”(359)
1.6”(41)
9.2”(234)
1.3”(33)
1.6”(40)
6.4”(163)
25.4”(645)
Unit external dimention
(Liquid side)
Refrigerant pipe connecting
port ∅A
(Gas side)
19.8”(502)
14.6”(372)
16.6”(422)
Drain-up port
0.8”
(19.3)
6.8”
0.8”
(171.4)
0.8”
(20)
(19.3)
Air intake flange outside
31.7”(805)
Electrical control box
0.8”(20)
Model MMD- A B
AP007, AP009, AP012 3/8” (9.5) 1/4” (6.4)
AP015, AP018 1/2” (12.7) 1/4” (6.4)
9-EN 10-EN
Installation of the indoor unit
All issues related to locating the unit above the ceiling,
hanging the unit from the building structure, routing/
suspending the unit refrigerant piping, routing/
suspending the unit wiring and penetrating the ceiling
for supply and return air connections to the indoor unit
must comply with all applicable codes and regulations.
The indoor unit should be hung above
the ceiling utilizing minimum 3/8" x 16
bolts, or threaded rod (4 pieces required) along with 3/
8" x 16 nuts, 3/8" flat washers and 3/8" lock washers.
All material locally procured.
Hanging bolt W3/8” (M10) 4 pieces
Nut W3/8” (M10) 12 pieces
Hanging bolt
(W3/8” (M10))
Nut
(W3/8” (M10))
Nut
(W3/8” (M10))
The unit should be positioned level and plumb without
pitch in any direction. The bolts, or threaded rod should
be attached to the building structure in compliance with
all applicable codes and regulations. The spacing for
the support bolts, or rods should match the dimensions
provided on the unit External dimensions in this
manual.
• Check that four sides are horizontal with a level
gauge. (Horizontal degree: Within 0.2” (5 mm))
M10 flat washer
(Accessory)
M10 flat washer
(Accessory)
REQUIREMENT
• Hang the unit in a horizontal position.
When unit is hanged to slant, it may cause overflow of
drainage.
• Install the unit within the dimension according to the
figure below.
• Use level gauge to confirm whether the unit is hang
horizontally.
Side view
0.2” (5 mm)
or less
Set the drain pipe connecting port side within
0.2” (5 mm) lower than opposite side.
Front view
0.2” (5 mm) or
less
Set the air intake and air discharge sides are
within 0.2” (5 mm) with each other.
Installation of wired remote
control (sold separately)
For installation of the wired remote control refer to the
instructions that are supplied with the control. The
connection point for the control wiring and the entrance
point for the control wiring are clearly marked in the
instructions.
Installation of wireless
remote control
(sold separately)
For installation of the wireless remote control refer to
the instructions that are supplied with the control. The
connection point for the control wiring and the entrance
point for the control wiring are clearly marked in the
instructions.
The sensor of indoor unit with wireless remote control
can receive a signal by distance within approx. 26.2’ (8
m).
Based upon it, determine a place where the remote
control is operated and the installation place.
• Keep 3.3’ (1 m) or more from the devices such as
television, stereo.
(Disturbance of image or noise may generate.)
• To prevent a malfunction, select a place where is not
influenced by a fluorescent light or direct sunlight.
• Two or more (Up to 6 units) indoor units with wireless
type remote control can be installed in the same
room.
2
6
.
2
’
(
8
m
)
o
r
l
e
s
s
EN
11-EN 12-EN
–6–
5 Drain piping
–7–
CAUTION
Condensate drain piping installation and material must comply with applicable codes and regulations for the
specific indoor installation.
The condensate drain piping must be insulated to prevent sweating. All material used in the plenum space above
the ceiling must comply with applicable codes and regulations. If the condensate drain exits the unit downward
(gravity flow) the slope and suspension methods used for the condensate drain piping must comply with applicable
codes and regulations.
• The drain pipe must be sloping downward (at an angle of 1/100 or more), and do not run the pipe up and down
(arched shape) or allow it to form traps. Doing so may cause abnormal sounds.
• Restrict the length of the traversing drain pipe to 65.6’ (20 m) or less. For a long pipe, provide support brackets
at intervals of 4’11” to 6’7” (1.5 to 2 m) to prevent flapping.
• Install the collective piping as shown in the following figure.
• Do not provide any air vents. Otherwise, the drain water will spout, causing water to leak.
• Do not allow any force to be applied to the connection area with the drain pipe.
Heat
insulator
4’11” to 6’7”
(1.5 to 2 m)
Downward slope
1/100 or more
Support
bracket
(Collective
piping)
As long as possible
(Approx. 3.9” (100 mm))
Downward slope
1/100 or more
VP30
Arched shape
Trap
Incorrect
Flexible hose
Use the attached flexible hose to adjust centre discrepancy of the hard vinyl chloride pipe or to adjust the angle.
• Do not use the flexible hose as stretched, or do not deform it more extent than that in the following figure.
• Fix the soft end of the flexible hose with the attached hose band.
• Use the flexible hose on a horizontal level.
OK
Top view
Side view
Air discharge
max
45°
max
45°
NO GOOD
Side view
Air discharge
Side view
Air discharge
Riser (Trap)
90° Bend
Condensate drain connection
for ducted indoor unit, metric
size (not suitable for US size)
PVC stub.
Indoor unit
Adhesive inhibited:
Use the attached flexible hose and hose band for connecting the
drain hose to the clear drain socket.
If applying the adhesive, socket will be damaged and cause water
leakage.
Attached hose
band
Soft socket
Drain pipe
connecting port
(Transparent)
Indoor unit
Attached flexible
hose
Hard socket
Align the attached hose band to
the end of hose, set the
tightening position upward, and
then tighten it.
Flexible hose
(Accessory)
Standard 1" PVC drain pipe installed
by field. Can also be converted at the
adapter to any other size/material
that may be required to comply with
applicable codes, or regulations.
Attached drain
socket
Standard 1" PVC drain pipe installed by
field. Can also be converted at the
adapter to any other size/material that
may be required to comply with
applicable codes, or regulations.
Condensate drain connection
for ducted indoor unit, metric
size (not suitable for US size)
PVC stub.
Condensate drain connection
adapter (provided with indoor
unit). converts metric size unit
drain connection to standard
1" US size PVC connection.
(Hard socket)
13-EN 14-EN
Connecting drain pipe
Insert flexible drain hose into upper drain pipe of main unit as far as it will go. Fix it with hose band.
REQUIREMENT
Mount the flexible drain hose using the hose band without using adhesive.
Check the condensate drain system
When all piping and wiring is completed the condensate drain system (including the pump) should be checked for
correct operation and leaks. If there are any abnormal sounds, leaks, or if the condensate water does not flow
normally, the problem should be diagnosed and corrected before the system is certified for operation.
In the test run, check that water drain is properly performed and water does not leak from the connecting part of
the pipes. When doing this, also check that no abnormal sounds are heard from the drain pump motor. Check
draining also when installed in heating period.
Hose band
Indoor unit
0.6” (15 mm) or less
10 to 12 mm)
(
0.4” to 0.5”
Flexible
drain hose
Drain up (condensate pumped up from unit)
When gravity drainage cannot be provided directly from the indoor unit condensate exit the piping can be arranged
for upward condensate discharge. The vertical leg of the drain line must be a maximum of 15.8”(400 mm) or less
from the indoor condensate exit and the total vertical height of the leg must be a maximum of 33.5”(850 mm) or
less before the drain enters a gravity flow line. These dimensions are specified by the indoor unit condensate pump
limitations. As specified for the gravity flow installation all materials and suspension methods must comply with
applicable codes and regulations.
Rising up
23.1”(587 mm)
or less
15.8”(400 mm)
or less
When the electrical and wiring work has been completed
Pour some water by following the method shown in the following figure. Then, while performing a cooling operation,
check that the water drains from the drain pipe connecting port (transparent) and that no water is leaking from the
drain pipe.
When the electrical and wiring work has not been completed
• Disconnect the float switch connector (3P: Red) from the connector (CN34: Red) on the printed circuit board
inside the electrical control box. (Before doing this, the power must be turned off.)
• Connect a 208 / 230 V supply voltage to (L1) and (L2) on the power supply terminal block. (Do not apply a 208
/ 230 V voltage to (A), (B) of the terminal block. Otherwise, the printed circuit board may be damaged.)
• Pour the water by following the method shown in the following figure. (Amount of water poured: 0.4 to 0.5 gal
(1500 to 2000 cc))
• When the power is turned on, the drain pump automatically starts running. Check whether the water is draining
from the drain pipe connecting port, and check that no water is leaking from the drain pipe.
• After checking that the water drains and there are no water leaks, turn off the power, connect the float switch
connector to its original location (CN34) on the printed circuit board, and return the electrical control box to its
original position.
208 / 230-1-60
White
Black
Black
Pull out connector CN34 (Red)
from P.C. board.
Red
Insert the edge of hose into the
drain pan and bend it downward.
Cover plate
Rising up 33.5”(850 mm) or less
Pump
Indoor unit
Underside of ceiling
15-EN 16-EN
–8–
Vessel
Water
(0.4 to 0.5 gal
(1500 to 2000 cc))
EN
–9–
Condensate drain pipe insulation
• As shown in the figure, cover the flexible hose and hose band with the attached heat insulator up to the bottom
of the indoor unit tightly.
• Cover the drain pipe tightly with a heat insulator locally procured so that it overlaps with the attached heat
insulator.
Wrap the attached heat
insulator tightly from the
surface of the indoor unit.
Heat insulator
(locally procured)
Indoor unit
Heat insulator of the drain
connecting section
(Accessory)
6 Duct design
Arrangement Unit: in (mm)
Referring to the following dimensions, manufacture duct at the local site.
<Air discharge>
Unit external dimension 33.3”(845)
0.8”(20)
0.8”
(20)
2.2”(57)
8.3”(210)
0.8”(19.3)
<Back air intake>
0.8”(19.3)
outside
6.8”(171.4)
0.8”
(20)
0.8”
(19.30)
0.8”(20)
Electrical control box
Air discharge flange outside
31.7”(805)
31.7”(805)
6.8”(171.4)
0.8”(19.3)
17-EN 18-EN
<Under air intake>
31.7”(805)
0.3”(8.2) or less
1.6”(41.5)
3.9”(100)
10.5”(266)
0.5”(12.5)
3.9”(100)
3.9”(100)
3.9”(100)
3.9”(100)
32.5”(825)
3.9”(100)
3.9”(100)
3.9”(100)
3.9”(100)
0.5”(12.5)
11.3”(286.8)
3.9”(100)
1.8”(45.3)
Alteration from the back air intake to the underside air intake
Remove the cover plate from underside. Attach the cover plate to back air intake side.
The intake flange provided (for air intake from the back) cannot be used for air intake from the underside.
Connecting method of the duct
Heat insulator with sticking material (locally procured)
Aluminum tape (locally procured)
Duct: Insulation
materia
(locally procured)
Aluminum tape
(locally procured)
Heat insulator with sticking material (locally procured)
Flange
Air discharge side
Connect a duct to the
inside of the flange
Indoor unit
Cover a screw
CAUTION
Incomplete heat insulation of the supply air flange and sealing may occur dewing resulted in falling of water drop.
Flange
Aluminum tape (locally procured)
Air intake side
Aluminum tape (locally procured)
Under surface
Remove the cover plate and then fix
it to the air intake side
CAUTION
Take out this cover
plate.
EN
19-EN 20-EN
–10–
–11–
Fan characteristics
◆ No filter
AP007, AP009 AP012
Standerd air flow rate: 317.8 (cfm)
Dotted line: Upper limit of external static pressure
0.250
0.200
0.150
0.100
Air flow rate lower limit
External static pressure (in.WG)
0.050
0.000
200 220 240 260 280 300 320 340 360 380 400
AP015 AP018
0.250
0.200
0.150
0.100
Air flow rate lower limit
External static pressure (in.WG)
0.050
Lower limit of external static pressure
High (0.20 in.WG)
High (0.14 in.WG)
Low (0.20 in.WG)
Low (0.14 in.WG)
Low (0.80 in.WG)
Air flow rate (cfm)
Standerd air flow rate: 406.1 (cfm)
Dotted line: Upper limit of external static pressure
Lower limit of external static pressure
Low (0.20 in.WG)
Low (0.14 in.WG)
Low (0.80 in.WG)
High (0.08 in.WG)
High (0.20 in.WG)
High (0.14 in.WG)
High (0.08 in.WG)
Air flow rate upper limit
External static pressure (in.WG)
Air flow rate upper limit
External static pressure (in.WG)
Standerd air flow rate: 353.1 (cfm)
Dotted line: Upper limit of external static pressure
0.250
0.200
0.150
0.100
Air flow rate lower limit
0.050
0.000
220 240 260 280 300 320 340 360 380 420400
0.250
0.200
0.150
0.100
Air flow rate lower limit
0.050
Lower limit of external static pressure
High (0.20 in.WG)
Low (0.20 in.WG)
Low (0.14 in.WG)
Low (0.80 in.WG)
Air flow rate (cfm)
Standerd air flow rate: 459.0 (cfm)
Dotted line: Upper limit of external static pressure
Low (0.20 in.WG)
Low (0.14 in.WG)
Low (0.80 in.WG)
High (0.14 in.WG)
High (0.08 in.WG)
Lower limit of external static pressure
High (0.20 in.WG)
High (0.14 in.WG)
High (0.08 in.WG)
7 Refrigerant piping
CAUTION
When the refrigerant pipe is long, provide support
brackets at intervals of 8’2” to 9’10” (2.5 to 3 m) to clamp
the refrigerant pipe. Otherwise, abnormal sound may be
generated.
Use the flare nut attached with the indoor unit or R410A
flare nut.
Permissible piping length and
height difference
They vary depending on the outdoor unit. For details,
refer to the Installation Manual attached to the outdoor
unit.
Air flow rate upper limit
Pipe size Unit: in (mm)
Model MMD-
AP007 to AP012 3/8” (9.5) 1/4” (6.4)
AP015 to AP018 1/2” (12.7) 1/4” (6.4)
Pipe size
Gas side Liquid side
Connecting refrigerant piping
Flaring
1 Cut the pipe with a pipe cutter.
Remove burrs completely. (Remaining burrs may
cause gas leakage.)
2 Insert a flare nut into the pipe, and flare the
pipe.
Use the flare nut provided with the unit or the one
used for the R410A refrigerant. The flaring
dimensions for R410A are different from the ones
used for the conventional R22 refrigerant. A new
flare tool manufactured for use with the R410A
refrigerant is recommended, but the conventional
Air flow rate upper limit
tool can still be used if the projection margin of the
copper pipe is adjusted to be as shown in the
following table.
Projection margin in flaring: B
Unit: in (mm)
Outer dia. of
copper pipe
1/4” to 1/2”
(6.4 to 12.7)
R410A tool used
0 to 0.02”
(0 to 0.5)
Conventional
tool used
0.04” to 0.06”
(1.0 to 1.5)
B
Flaring diameter size: A
Unit: in (mm)
Outer dia. of copper pipe A
1/4” (6.4) 0.36” (9.1)
3/8” (9.5) 0.52” (13.2)
1/2” (12.7) 0.65” (16.6)
A
* In case of flaring for R410A with the conventional
flare tool, pull it out approx. 0.02” (0.5 mm) more than
that for R22 to adjust to the specified flare size. The
copper pipe gauge is useful for adjusting projection
margin size.
• The sealed gas was sealed at the atmospheric
pressure so when the flare nut is removed, there will
no “whooshing” sound: This is normal and is not
indicative of trouble.
• Use two wrenches to connect the indoor unit pipe.
+0
–0.02” (0.4)
0.000
260 280 300 320 340 360 380 480400 420 440 460
Air flow rate (cfm)
0.000
300 480 500 520320 340 360 380 540400 420 440 460
Air flow rate (cfm)
Work using double spanner
21-EN 22-EN
• Use the tightening torque levels as listed in the
following table.
Outer dia. of connecting
pipe (in (mm))
1/4” (6.4) 10 to 13 (14 to 18)
3/8” (9.5) 24 to 31 (33 to 42)
1/2” (12.7) 37 to 46 (50 to 62)
• Tightening torque of flare pipe connections.
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times) Therefore, using a torque
wrench, tighten the flare pipe connecting sections
which connect the indoor and outdoor units of the
specified tightening torque.
Incorrect connections may cause not only a gas leak,
but also an error of the refrigeration cycle.
Tightening torque
(ft•lbs (N•m))
CAUTION
Tightening with an excessive torque may crack the nut
depending on installation conditions.
Airtight test / air purge, etc.
For air tightness test, adding refrigerant, refer to the
Installation Manual attached to the outdoor unit.
CAUTION
Do not supply power to the indoor unit until the airtight
test and vacuuming are completed. (If the indoor unit is
powered on, the pulse motor valve is fully closed, which
extends the time for vacuuming.)
Open the valve fully
Open the valve of the outdoor unit fully.
Heat insulation process
Apply heat insulation for the pipes separately at liquid
side and gas side.
• For the heat insulation to the pipes at gas side, use
the material with heat-resisting temperature 248 °F
(120 °C) or higher.
• To use the attached heat insulation pipe, apply the
heat insulation to the pipe connecting section of the
indoor unit securely without gap.
REQUIREMENT
• Apply the heat insulation to the pipe connecting
section of the indoor unit securely up to the root
without exposure of the pipe. (The pipe exposed to the
outside causes water leak.)
• Wrap heat insulator with its slits facing up (ceiling
side).
• Apply heat insulating materials to both the gas side
and liquid side as shown:
To cover the pipe and the
indoor unit with a heat
insulator, do not make a
Indoor unit
Wrap the insulator
with adhesive tale.
(locally procured)
gap between them.
Flare nut
Union
Heat insulator
of the pipe
Banding band
(Accessory)
8 Electrical connection
WARNING
1. Use predefined wire and connect them certainly.
Keep the connecting terminal free from external
force.
Improper wire connection or clamping may result in
exothermic, fire or malfunction.
2. Connect ground wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for telephone
wires.
3. Install appliance in accordance with national
wiring regulations.
Capacity shortage of circuit breaker or incomplete
installation may cause an electric shock or a fire.
CAUTION
• Consult local building codes, NEC (National Electrical
Code) or CEC (Canadian Electrical Code) for special
requirements.
• If incorrect / incomplete wiring is carried out, it will
cause an electrical fire or smoke.
• Install circuit breaker is not tripped by shock waves.
If circuit breaker is not installed, an electric shock may
be caused.
• Use the cord clamps attached to the product.
• Do not damage or scratch the conductive core and
inner insulator of power and control wires when
peeling them.
• Use the power cord and control wire of specified
thickness, type, and protective devices required.
• Do not connect 208 / 230 V power to the terminal
blocks (U1, U2, A, B etc.) for control wiring.
(Otherwise, the system will fail.)
• Perform the electric wiring so that it does not come to
contact with the high-temperature part of the pipe.
The coating may melt resulting in an accident.
• Do not turn on the circuit breaker of the indoor unit
until vacuuming of the refrigerant pipes completes.
Power supply wire and
control wires specifications
Power supply wire and control wires are locally
procured.
For the power supply specifications, follow to the table
below. If capacity is little, it is dangerous because
overheat or seizure may be caused.
Indoor unit power supply
For the power supply of the indoor unit, prepare the
exclusive power supply separated from that of the
outdoor unit.
▼ Power supply
Power supply 208 / 230-1-60
Control wiring, Central control wiring
• 2-core with non-polarity wires are used for the
control wiring between indoor unit and outdoor unit
and Central control wiring.
• To prevent noise trouble, use 2-core shielded wire.
• The length of the communication line means the total
length of the control wire length between indoor and
outdoor units added with the central control wire
length.
REQUIREMENT
• For power supply wiring, strictly conform to the Local
Regulation in each country.
• Run the refrigerant piping line and control wir ing line in
the same line.
EN
23-EN 24-EN
–12–
–13–
Power supply wire
Recommended wire diameter and wire length for power supply wire.
Power supply wiring
▼ Electric characteristics
Model Power Supply
MMD-AP0074SPH2UL
MMD-AP0094SPH2UL 0.73 15
MMD-AP0124SPH2UL 0.75 15
MMD-AP0154SPH2UL 0.88 15
MMD-AP0184SPH2UL 1.00 15
208 / 230 V-1-60 Hz 187 253
Wire size: 2 × AWG14
Ground 1 × AWG14 or thicker
MOCP : Maximum Overcurrent Protection (Amps)
Up to 164’1” (50 m)
MCA : Minimum Circuit Amps
Voltage Range (V) MCA MOCP
Min Max (A) (A)
0.73 15
Control wire
Control wiring between indoor units, and outdoor unit (2-core
shielded wire)
Wire size
(Up to 3280’10” (1000 m)) AWG16
(Up to 6561’8” (2000 m)) AWG14
Remote control wiring
2-core with non-polarity wire is used for wiring of the remote control wiring and group remote controls wiring.
Remote control wiring, remote control inter-unit wiring Wire size: AWG20
Total wire length of remote control wiring and remote control
inter-unit wiring = L + L1 + L2 + … Ln
Total wire length of remote control inter-unit wiring = L1 + L2 + … Ln Up to 656’2” (200 m)
Remote
control
wiring
Indoor unit
L
Remote
control
Indoor unit Indoor unit Indoor unit
L1
Remote control inter-unit wiring
NOTE
• Use copper supply wire.
• Use UL wire rated 600 V for the power supply.
• Use UL wire rated 300 V for the remote control wires and control wires.
In case of wired type only Up to 1640’5” (500 m)
In case of wireless type included Up to 1312’4” (400 m)
L2 Ln
(Max. 8 units)
Wiring between indoor and outdoor units
NOTE
An outdoor unit connected with control wiring between indoor and outdoor units wire becomes automatically the header
unit.
▼ Wiring example
Disconnect
switch per NEC
Indoor
power
supply
208 /
230-1-60
Outdoor Power supply
Circuit breaker Circuit breaker
Header outdoor unit
Ground
terminal
Indoor unit
Ground Ground Ground Ground
Circuit
breaker
U1U2U3U4L1 L2L3 N U5U6
Control wiring between indoor and outdoor units
Control wiring between indoor units
U1U2
L1L2 A BU1U2L1L2 A B U1U2L1L2 A B U1U2L1L2 A B
A B
Remote
control
Outdoor Power supply
Follower outdoor unit
Ground
terminal
Control wiring between outdoor units
Indoor unit Indoor unit
Disconnect
switch per
NEC
U1U2U3U4L1 L2L3 N U5U6
Disconnect
A B A B
switch per
NEC
Remote
control
Remote
control
Group control
Indoor unit
Disconnect
switch per
NEC
CAUTION
The remote control wire (Communication line) and AC208 / 230 V wires cannot be parallel to contact each other and
cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system due to noise or other
factor.
25-EN 26-EN
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