Mitsubishi Electric CITY MULTI PAC-AH001-1 User manual

AHU Controller
PAC-AH001-1
INSTALLATION MANUAL FOR INSTALLER
ENGLISH
For safe and correct use, please read this installation manual thoroughly before installing
the air-conditioner unit.
MANUEL D’INSTALLATION POUR L’INSTALLATEUR
FRANÇAIS
Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter
tout accident et vous assurer d’une utilisation correcte.

Table of Contents
PAC-AH001-1 ..................................................................................................................................... 7
Purpose ..................................................................................................................................... 7
1. Safety Precautions .................................................................................................................. 8
Before installation and electric work ..................................................................................... 8
Symbols used in the text ............................................................................................. 8
Precautions for devices that use R410A refrigerant .............................................................. 11
Before installation .............................................................................................................. 12
Before - electrical work ....................................................................................................... 13
Before starting the test run ................................................................................................. 14
2. Components .......................................................................................................................... 15
3. System Configuration ............................................................................................................. 16
3.1 System components ..................................................................................................... 16
3.2 Selection of the heat exchanger (air handling unit) ......................................................... 16
3.2.1 Contamination control ........................................................................................ 16
3.2.2 Specifications of the heat exchanger .................................................................. 16
3.2.3 LEV Assembly Design Capacity Range ............................................................... 17
4. Selecting an installation site and installing the control box ......................................................... 18
4.1 Combining indoor units with outdoor units ...................................................................... 18
4.2 Installing the control box ............................................................................................... 18
5. Refrigerant pipe specifications ................................................................................................ 21
6. Connecting refrigerant pipes ................................................................................................... 22
6.1 Refrigerant piping work ................................................................................................. 22
6.2 LEV Assembly installation ............................................................................................. 23
Make sure to remove the rubber plugs on the LEV Assembly before installation. ........... 24
Figure 6-2 shows the installation for a single LEV Assembly. ........................................ 24
Figure 6-3 shows the installation 2 LEV Assemblies in parallel. ..................................... 25
6.3 Thermistor installation .................................................................................................. 26
6.3.1 Thermistor for gas pipe ...................................................................................... 26
6.3.2 Thermistor for liquid pipe .................................................................................... 27
6.3.3 Thermistor for suction/discharge air .................................................................... 27
7. Electrical Wiring ..................................................................................................................... 29
Precautions on electrical wiring ........................................................................................... 29
Connecting wiring .............................................................................................................. 30
Transmission cable specifications ....................................................................................... 30
7.1 Power supply wiring ..................................................................................................... 31
[Selecting non-fuse breaker (NF) or ground fault circuit interrupter (GFCI)] .................... 32
7.2 Connecting remote controller, AHU controller, and outdoor unit transmission cables ......... 32
7.2.1 Connection to Outdoor Unit ................................................................................ 33
7.2.2 Connection for Operation with Mitsubishi Electric Controller ................................. 33
7.2.3 Connection for Operation with Third Party Controller ............................................ 35
7.3 Connecting LEV assembly and thermistor cables ........................................................... 36
7.3.1 Connecting LEV assembly cables ....................................................................... 36
7.3.2 Connecting thermistor cables ............................................................................. 36
7.4 Connecting external input/output signals ........................................................................ 37
7.5 External I/O specifications ............................................................................................ 41
8. Setting switches ..................................................................................................................... 42
8.1 Setting addresses ........................................................................................................ 42
8.2 Setting unit capacity ..................................................................................................... 42
8.3 Setting Remote Controller Type ..................................................................................... 44
3 © 2017 Mitsubishi Electric US, Inc.

8.3.1 Type 1 (for temperature control) ......................................................................... 44
8.3.2 Type 2 (for capacity control) ............................................................................... 45
8.4 Setting Temperature Control ......................................................................................... 46
8.4.1 Settings for Discharge Air Control ....................................................................... 46
8.4.2 Settings for Return Air Control ............................................................................ 47
8.5 Electric Heater Control ................................................................................................. 48
8.6 Humidifier Control ........................................................................................................ 49
Sequence of operation: .............................................................................................. 49
Humidistat: ................................................................................................................ 49
9. Initial setting and test run ........................................................................................................ 51
Memo ....................................................................................................................................... 52
PAC-AH001-1 .................................................................................................................................... 53
OBJET ...................................................................................................................................... 53
1. Mesures de sécurité ............................................................................................................... 54
Avant l’installation et les travaux électriques ........................................................................ 54
Symboles utilisés dans le texte ................................................................................... 54
Précautions pour les dispositifs qui utilisent du frigorigène R410A ......................................... 57
Avant l’installation .............................................................................................................. 58
Avant – travaux électriques ................................................................................................ 59
Avant de commencer l’essai ............................................................................................... 60
2. Composantes ........................................................................................................................ 61
3. Configuration du système ....................................................................................................... 62
3.1 Composantes du système ............................................................................................ 62
3.2 Sélection de l’échangeur de chaleur (appareil de traitement d’air) ................................... 62
3.2.1 Contrôle de la contamination .............................................................................. 62
3.2.2 Spécifications de l’échangeur de chaleur ............................................................ 63
3.2.3 Plage de capacité nominale des assemblages LEV ............................................. 63
4. Sélection d’un site d’installation et installation du boîtier de commande ..................................... 64
4.1 Combinaison d’appareils intérieurs avec des appareils extérieurs .................................... 64
4.2 Installation du boîtier de commande .............................................................................. 64
5. Spécifications des tuyaux de frigorigène .................................................................................. 67
6. Connexion des tuyaux de frigorigène ....................................................................................... 68
6.1 Travaux de tuyauterie de frigorigène .............................................................................. 68
6.2 Installation de l’assemblage LEV ................................................................................... 69
Avant l’installation, assurez-vous de retirer les bouchons de caoutchouc se trouvant
sur l’assemblage LEV. ................................................................................................ 70
La figure 6-2 présente l’installation pour un seul assemblage LEV. ................................ 70
La figure 6-3 présente l’installation de 2 assemblages LEV en parallèle. ........................ 72
6.3 Installation de la thermistance ....................................................................................... 73
6.3.1 Thermistance pour tuyau de gaz ........................................................................ 73
6.3.2 Thermistance pour le tuyau de liquide ................................................................. 74
6.3.3 Thermistance pour l’air aspiré/soufflé .................................................................. 74
7. Câblage électrique ................................................................................................................. 76
Précautions concernant le câblage électrique ...................................................................... 76
Connexion du câblage ....................................................................................................... 77
Spécifications du câble de transmission .............................................................................. 77
7.1 Câblage de l’alimentation électrique .............................................................................. 78
[Sélection d’un disjoncteur sans fusible (SF) ou d’un disjoncteur de fuite de terre] .......... 79
7.2 Connexion du contrôleur à distance, du contrôleur AHU et des câbles de transmission
de l’appareil extérieur ......................................................................................................... 79
7.2.1 Connexion à l’appareil extérieur ......................................................................... 80
PAC-AH001-1 • PAC-AH001-1
Specifications are subject to change without notice. 4

7.2.2 Connexion pour le fonctionnement avec un contrôleur électrique Mitsubishi .......... 80
7.2.3 Connexion pour un fonctionnement avec un contrôleur d’un tiers .......................... 83
7.3 Connexion des câbles de l’assemblage LEV et de thermistance ...................................... 84
7.3.1 Connexion des câbles d’assemblage LEV ........................................................... 84
7.3.2 Connexion des câbles de la thermistance ........................................................... 84
7.4 Connexion des signaux d’entrée et de sortie externes .................................................... 85
7.5 Spécifications d’entrée et de sortie externes .................................................................. 89
8. Réglage des interrupteurs ....................................................................................................... 90
8.1 Réglage des adresses .................................................................................................. 90
8.2 Réglage de la capacité de l’appareil .............................................................................. 90
8.3 Réglage du type de contrôleur à distance ...................................................................... 92
8.3.1 Type 1 (pour le contrôle de la température) ......................................................... 92
8.3.2 Type 2 (pour le contrôle de la capacité) ............................................................... 93
8.4 Réglage du contrôle de la température .......................................................................... 94
8.4.1 Réglages pour le contrôle de l’air soufflé ............................................................. 94
8.4.2 Réglages pour le contrôle de l’air repris .............................................................. 95
8.5 Contrôle d’une chaufferette électrique ........................................................................... 96
8.6 Contrôle d’un humidificateur .......................................................................................... 98
Séquence de fonctionnement : ................................................................................... 98
Humidistat : ............................................................................................................... 98
9. Configuration initiale et essai ................................................................................................ 100
Note de service ....................................................................................................................... 101
PAC-AH001-1 • PAC-AH001-1
5 © 2017 Mitsubishi Electric US, Inc.

Specifications are subject to change without notice. 6

Purpose
The purpose of the PAC-AH001-1 air handler controller is to allow a Mitsubishi City Multi Outdoor Unit to
communicate with and control a 3rd party air handler. PAC-AH001-1 systems must be designed under and
operated within the design and applications standards outlined in the PAC-AH001-1 Applications Guide.
IMPORTANT
Prior to connecting LEV kit models, a software update may be required for both air-
source and water-source, W/Y-Series and W/R2-Series CITY MULTI® outdoor units to
ensure proper equipment operation and performance.
Refer to Addendum A of this Installation Manual (available on www.mylinkdrive.com)
for the necessary SW version for your ODU.
Please contact Mitsubishi Technical Service about software updates before
installation.
7 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

1. Safety Precautions
Before installation and electric work
Before installing the unit, make sure you read all the “Safety precautions”.
The “Safety precautions” provide very important points regarding safety. Make sure you follow them.
Symbols used in the text
WARNING
Describes precautions that should be observed to prevent danger of injury or death to the
user.
CAUTION
Describes precautions that should be observed to prevent damage to the unit.
Symbols used in the text
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This symbol is displayed on the
main unit label.)
<Color: yellow>
: Beware of electric shock (This symbol is displayed on the main unit label.) <Color: yellow>
WARNING
Carefully read the labels affixed to the main unit.
PAC-AH001-1
Specifications are subject to change without notice. 8
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WARNING
• Ask the dealer or an authorized technician to install the controller.
-Improper installation by the user may result in water leakage, electric shock, or fire.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
- Children should be supervised to ensure that they do not play with the appliance.
• Use the specified cables for wiring. Make the connections securely so that the outside
force of the cable is not applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
• Prepare for typhoons and other strong winds and earthquakes and install the unit at the
specified place.
- Improper installation may cause the unit to topple and result in injury.
• Never repair the unit. If the controller must be repaired, consult the dealer.
- If the unit is repaired improperly, electric shock, or fire may result.
• When handling this product, always wear protective equipment. e.g.: Gloves, full arm
protection namely boiler suit, and safety glasses.
- Improper handling may result in injury.
• If refrigerant gas leaks during installation work, ventilate the room.
- If the refrigerant gas comes into contact with a flame, poisonous gases will be
released.
• Install the controller according to this Installation Manual. -
If the unit is installed improperly, electric shock, or fire may result.
• Have all electric work done by a licensed electrician according to “Electric Facility
Engineering Standard” and “Interior Wire Regulations” and the instructions given in this
manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is performed improperly,
electric shock and fire may result.
• Keep the electric parts away from water (washing water etc.).
- It might result in electric shock, catching fire or smoke.
• Securely install the outdoor unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may enter the
outdoor unit and fire or electric shock may result.
• When installing and moving the air handling unit to another site, do not charge the unit
with a refrigerant different from the refrigerant specified on the unit. -
If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle
may malfunction and the unit may be damaged.
• If the air handling unit is installed in a small room, measures must be taken to prevent
the refrigerant concentration from exceeding the safety limit even if the refrigerant
should leak.
- Consult the dealer regarding the appropriate measures to prevent the safety limit from
being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded,
hazards due to lack of oxygen in the room could result.
• When moving and reinstalling the air handling unit, consult the dealer or an authorized
technician.
- If the controller is installed improperly, electric shock, or fire may result.
PAC-AH001-1
9 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

• After completing installation work, make sure that refrigerant gas is not leaking.
- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other heat
source, it may generate noxious gases.
• Do not reconstruct or change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device is shorted and
operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire
or explosion may result.
• To dispose of this product, consult your dealer.
• Do not use a leak detection additive.
PAC-AH001-1
Specifications are subject to change without notice. 10
ENGLISH

Precautions for devices that use R410A refrigerant
CAUTION
• Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping contains a large amount of
chlorine which may cause the refrigerator oil of the new unit to deteriorate.
• Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized copper as
specified in the JIS H3300 “Copper and copper alloy seamless pipes and tubes”. In
addition, be sure that the inner and outer surfaces of the pipes are clean and free of
hazardous sulphur, oxides, dust/ dirt, shaving particles, oils, moisture, or any other
contaminant.
- Contaminants on the inside of the refrigerant piping may cause the refrigerant residual
oil to deteriorate.
• Store the piping to be used during installation indoors and keep both ends of the piping
sealed until just before brazing. (Store elbows and other joints in a plastic bag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor
trouble may result.
• Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat
flares and flange connections.
- The refrigerator oil will degrade if it is mixed with a large amount of mineral oil.
• Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of the refrigerant in the
cylinder will change and performance may drop.
• Do not use a refrigerant other than R410A.
- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the
refrigerator oil to deteriorate.
• Use a vacuum pump with a reverse flow check valve.
- The vacuum pump oil may flow back into the refrigerant cycle and cause the
refrigerator oil to deteriorate.
• Do not use the following tools that are used with conventional refrigerants. (Gauge
manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge
base, vacuum gauge, refrigerant recovery equipment.)
- If the conventional refrigerant and refrigerator oil are mixed in the R410A, the
refrigerant may deteriorated.
- If water is mixed in the R410A, the refrigerator oil may deteriorate.
- Since R410A does not contain any chlorine, gas leak detectors for conventional
refrigerants will not react to it.
• Do not use a charging cylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
• Be especially careful when managing the tools.
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.
PAC-AH001-1
11 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

Before installation
CAUTION
• Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion may result.
• Do not use the air conditioner where food, pets, plants, precision instruments, or artwork
are kept.
- The quality of the food, etc. may deteriorate.
• Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air
conditioner or damage its parts.
• When installing the unit in a hospital, communication station, or similar place, provide
sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency medical equipment,
or radio communication equipment may cause the air conditioner to operate erroneously,
or fail to operate. On the other hand, the air conditioner may affect such equipment by
creating noise that disturbs medical treatment or image broadcasting.
• Do not install the unit on a structure that may cause leakage.
- When the room humidity exceeds 80 % or when the drain pipe is clogged,
condensation may drip from the indoor unit. Perform collective drainage work together
with the outdoor unit, as required.
PAC-AH001-1
Specifications are subject to change without notice. 12
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Before - electrical work
CAUTION
• Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or telephone
ground lines. Improper grounding may result in electric shock.
• Install the power cable so that tension is not applied to the cable.
- Tension may cause the cable to break and generate heat and cause a fire.
• Install a ground fault circuit interrupter (GFCI) circuit breaker, as required.
- If a GFCI circuit breaker is not installed, electric shock may result
• Use power line cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
• Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a
general unit failure or fire.
• Do not wash the air conditioner units.
- Washing them may cause an electric shock.
• Be careful that the installation base is not damaged by long use.
- If the damage is left uncorrected, the unit may fall and cause personal injury or
property damage.
• Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 44 lb [20 kg].
- Some products use PP bands for packaging. Do not use any PP bands for a means of
transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
- When transporting the outdoor unit, suspend it at the specified positions on the unit
base. Also support the outdoor unit at four points so that it cannot slip sideways.
• Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause stabs or
other injuries.
- Tear apart and throw away plastic packaging bags so that children will not play with
them. If children play with a plastic bag which was not torn apart, they face the risk of
suffocation.
PAC-AH001-1
13 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

Before starting the test run
CAUTION
• Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power switch can result in
severe damage to internal parts. Keep the power switch turned on during the operational
season.
• Do not touch the switches with wet fingers.
- Touching a switch with wet fingers can cause electric shock.
• Do not touch the refrigerant pipes during and immediately after operation.
- During and immediately after operation, the refrigerant pipes are may be hot and may
be cold, depending on the condition of the refrigerant flowing through the refrigerant
piping, compressor, and other refrigerant cycle parts. Your hands may suffer burns or
frostbite if you touch the refrigerant pipes.
• Do not operate the air conditioner with the panels and guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not turn off the power immediately after stopping operation.
- Always wait at least five minutes before turning off the power. Otherwise, water
leakage and trouble may occur.
PAC-AH001-1
Specifications are subject to change without notice. 14
ENGLISH

2. Components
An AHU controller kit includes the following components (Fig 2-1):
① ② ③
① AHU Control
Box
② Thermistor
③ Thermistor
Bracket
④ Installation
Manual
⑤ Rubber
Bushing (x7)
⑥ Cover
Lanyard
④
78
⑤ ⑥
An LEV Assembly includes the following components (Fig 2-2):
① ② ① LEV
Assembly (PAC-
LV24, 48,
60AC-1)
② LEV
Assembly (PAC-
LV96, 120AC-1)
PAC-AH001-1
15 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

3. System Configuration
3.1 System components
Contro
B
L
HI
J
K
G
F
A
CD
E
Ⓐ Air handling unit
controller PAC-AH001-1
Ⓑ Air handling unit (field
supply)
Ⓒ Controller (field supply)
Ⓓ Outdoor unit
Ⓔ Heat exchanger (field
supply)
Ⓕ Gas Pipe (field supply)
Ⓖ Liquid Pipe (field
supply)
Ⓗ LEV Assembly
Ⓘ Thermistor (gas pipe)
Ⓙ Thermistor (liquid pipe)
Ⓚ Thermistor (suction air)
Ⓛ Thermistor (discharge
air)
Fig 3-1
3.2 Selection of the heat exchanger (air handling unit)
3.2.1 Contamination control
Control the contamination to keep proper quality of the models using HFC refrigerant.
Contamination Content
Residual water content The content shall be less than 1.3E-3 oz/gal [10 mg/lit.].
Residual oil content
The low residual oil pipe 5.4E-6 oz/ft [0.5 mg/m] or less shall be used
for heat exchangers.
For long piping connected or piping tended to be stagnated with oil, the
content shall be less than 3.2E-5 oz/ft [3 mg/m]. For other piping,
9.7E-5 oz/ft [9 mg/m] or less shall be applied.
Residual foreign
substance The content shall be less than 8.2E-5 oz/ft2 [25 mg/m2].
(including residual
machining oil content)
Others No chlorine content shall be found inside the refrigerant circuit.
3.2.2 Specifications of the heat exchanger
Refer to the LEV Kit applications guide for information on heat exchanger selection.
PAC-AH001-1
Specifications are subject to change without notice. 16
ENGLISH

3.2.3 LEV Assembly Design Capacity Range
The table below shows the design capacity for each LEV Assembly model.
NOTE
Two PAC-LV96AC-1 assemblies can be combined in parallel to achieve a design capacity
range of 120,000-192,000 Btu/h.
Two PAC-LV120AC-1 assemblies can be combined in parallel to achieve a design capacity
range of 192,000-240,000 Btu/h.
See section LEV Assembly installation for details on LEV Assembly installation.
LEV Assembly
Model
Design Capacity Range
[Btu/h]
Capacity Code
Setting [Ton]
LEV PAC-LV24AC-1 4,800 - 24,000 0.5, 0.7, 1, 1.25, 1.5, 2
LEV PAC-LV48AC-1 24,000 – 48,000 2.25, 2.5, 3, 4
LEV PAC-LV60AC-1 48,000 - 60,000 4.5, 5
LEV PAC-LV96AC-1 60,000 - 96,000 6, 8
LEV PAC-LV120AC-1 96,000 - 120,000 10
LEV PAC-LV96AC-1 (x2) 120,000 - 192,000 12, 14, 16
LEV PAC-LV120AC-1 (x2) 192,000 - 240,000 18, 20
PAC-AH001-1
17 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

4. Selecting an installation site and installing the control
box
• Avoid locations in direct sunlight
• Avoid locations exposed to outside air
• Avoid locations exposed to the elements or water splashes
• Avoid locations exposed to stream or oil vapor
• Avoid locations where combustible gas may leak, settle or be generated
• Avoid installation near machines emitting high-frequency waves
• Avoid places where acidic solutions are frequently handled
• Avoid places where sulfur-based or other sprays are frequently used
• Operation range for control box is -4°F to 115°F
• AH Control Box has a UL 60730 Pollution Degree of 2
4.1 Combining indoor units with outdoor units
For combining indoor units with outdoor units, refer to the AHU Controller Applications Manual.
4.2 Installing the control box
NOTE
• Per UL 60730, the factory-supplied lanyard shall be installed for compliance with
mechanical requirements.
• Do not install the control box without the cover. Be sure to replace cover after servicing
the control box.
Before mounting the control box, attach the provided lanyard to the back of the AHU Control Box using the
factory installed screw as shown in Figure 4.2.1.
PAC-AH001-1
Specifications are subject to change without notice. 18
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②①
① Screw (factory installed)
② Lanyard
Fig 4.2.1
Mount the control box panel on a vertical surface as shown in Figure 4.2.2.
①②
307
440
① Control Box panel
② Screw (field supply)
Fig 4.2.2
PAC-AH001-1
19 © 2017 Mitsubishi Electric US, Inc.
ENGLISH

See sections 7, 8, and 9 for details on field wiring and setting DIP switches of AHU Control Box. After set
up of the AHU control box is complete (attaching field wiring, setting DIP switches, etc) place the cover on
the AHU control box and attach the lanyard as shown in Figure 4.2.3.
①
②③
① Control Box Cover
② Screw (factory installed)
③ Lanyard
Fig 4.2.3
NOTE
• AHU Control Box must be installed in vertical position.
PAC-AH001-1
Specifications are subject to change without notice. 20
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