MITSUBISHI ELECTRIC PAC-IF013B-E Air Handling Unit Controller Instruction Manual

MITSUBISHI ELECTRIC PAC-IF013B-E Air Handling Unit Controller Instruction Manual

Safety precautions

• Before installing the interface unit, make sure you read all the “Safety precautions”.
• Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system.

Warning:
Precautions that must be observed to prevent injuries or death.
Caution:
Precautions that must be observed to prevent damages to the unit.

After installation, perform the test run to ensure normal operation. Then explain your customer the “Safety Precautions,” use, and maintenance of the unit based on the information in the Operation Manual provided by local application manufacturer. Both the Installation Manual and the Operation Manual must be given to the user. These manuals must always be kept by the actual users.

Indicates a part which must be grounded.
Warning:
Carefully read the labels attached to the unit.
: Indicates warnings and cautions when using R32 refrigerant

Warning

• The unit must not be installed by the user. Ask an installer or an authorized technician to install the unit. If the unit is installed improperly, electric shock, or fire may be caused.
• For installation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual.
• The unit must be installed according to the instructions in order to minimize the risk of damages by earthquakes, typhoons, or strong winds. Improperly installed unit may fall down and cause damage or injury.
• The unit must be securely installed on a structure that can sustain its weight. If the unit is mounted on an unstable structure, it may fall down and cause damage or injury.
• All electric work must be performed by a qualified technician according to local regulations and the instructions given in this manual. The unit must be powered by dedicated power lines and the correct voltage and circuit breakers must be used. Power lines with insufficient capacity or incorrect electrical work may result in electric shock or fire.
• Only the specified cables can be used for wiring. Connections must be made securely without tension on the terminals. If cables are connected or installed improperly, It may result in overheating or fire.
• Terminal block cover panel of the unit must be firmly fixed. If the cover panel is mounted improperly, dust and moisture may enter the unit, and it may cause electric shock or fire.
• Make sure to use accessories authorized by Mitsubishi Electric and ask an installer or an authorized technician to install them. If accessories are improperly installed, it may cause electric shock, or fire.
• Do not remodel the unit. Consult an installer for repairs. If alterations or repairs are not performed correctly, it may cause electric shock or fire.
• The user should never attempt to repair the unit or transfer it to another location. If the unit is installed improperly, it may cause electric shock or fire. If the interface unit needs to be repaired or moved, ask an installer or an authorized technician.
• When installing sensors and parts, do not expose the terminals.
  R32 is flammable refrigerant, and the fire safety warranty for the whole system (including outdoor unit) must be done by your side. Conformity of regulations and laws must be confirmed on the system by your side.
  For safety, make sure to read the installation manual for the outdoor unit, especially when using R32 refrigerant.

Before installation (Environment)

Caution

• Do not install the interface unit in outdoor location as it is designed for indoor installation only. Otherwise electric shock or breakdown may be caused by water drop, wind or dust.
• Do not use the unit in an unusual environment. If the interface unit is installed or exposed to steam, volatile oil (including machine oil), or sulfuric gas, or exposed to briny air, the internal parts can be damaged.
• Do not install the unit where combustible gases may leak, be produced, flow, or accumulate. If combustible gas accumulates around the unit, it may cause fire or explosion.
• When installing the unit in a hospital or in a building where communications equipment are installed, you may need to take measure to noise and electronic interference. Inverters, home appliances, high-frequency medical equipment, and radio communications equipment can cause the interface unit to malfunction or to breakdown. At the same time, the noise and electric interference from the interface unit may disturb the proper operation of medical equipment, and communications equipment.

Before installation or relocation

Caution

• Be very careful when moving the units. Do not hold the packaging bands. Wear protective gloves to unpack and to move it, in order to avoid your hands being injured by parts.
• Be sure to safely dispose of the packaging materials. Packaging materials, such as nails and other metal or wooden parts may cause injury.
• Do not wash the interface unit. You may receive an electric shock.

Before electric work

Caution

• Be sure to install a circuit breaker. If it is not installed, there may be a risk of electric shock.
• For the power lines, use standard cables of sufficient capacity. Otherwise, it may cause a short circuit, overheating, or fire.
• When installing the power lines, do not apply tension to the cables. The cables may be cut or overheated resulting in a fire.
• Make sure to ground the unit. Do not connect the ground wire to gas or water pipes, lightning rods, or telephone grounding lines. If the unit is not properly grounded, there may be a risk of electric shock.
• Make sure to use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and molded case circuit breaker) with the specified capacity. If the circuit breaker capacity is larger than the specified capacity, breakdown or fire may result.

Before starting the test run

Caution

• Turn on the main power switch of the outdoor unit more than 12 hours before starting operation. Starting operation immediately after turning on the power switch can severely damage the internal parts. Keep the main power switch turned on during the operation period.
• Before starting operation, check that all protective parts are correctly installed. Make sure not to get injured by touching high voltage parts.
• Do not touch any switch with wet hands. There may be a risk of electric shock.
• After stopping operation, wait at least 5 minutes before turning off the main power. Otherwise, it may cause breakdown.

Installing the interface unit

Check the parts (Fig. 2.1.1)

The interface unit should be supplied with the following parts

| Part Name| PAC-IF013B-E| PAC-SIF013B-E
---|---|---|---
1| Interface unit| 1| 1
2| Thermistor| 4| 4
3| Remote controller cable (5m)| 1| –
4| Remote controller| 1| –

Choosing the interface unit installation location

• Do not install the interface unit in outdoor location as it is designed for indoor installation only. (The interface board and casing are not waterproof.)
• Avoid locations where the unit is exposed to direct sunlight or other sources of heat.
• Select a location where easy wiring access to the power source is available.
• Avoid locations where combustible gases may leak, be produced, flow, or accumulate.
• Select a level location that can bear the weight and vibration of the unit.
• Avoid locations where the unit is exposed to oil, steam, or sulfuric gas.
• Do not install in location that is hot or humid for long period of time.

Installing the interface unit (Fig. 2.3.1, 2.3.2, 2.3.3)

1. Remove 2 screws A from interface unit and remove the cover by sliding it upward ( see Fig. 2.3.1).
   
   

2. Install the 4 screws (locally supplied) in 4 holes (C hole).

   • To prevent the unit from falling off the wall, select the appropriate screws (locally supplied) and secure the base horizontally to the appropriate wall location. ( See Fig. 2.3.2)
     
     < Fig. 2.3.3>
     
     A Screw
     B Cover
     C Hole for installation

| PAC-IF013B-E| PAC-SIF013B-E
---|---|---
Weight| 2.5 kg + ACCESSORIES 0.8 kg| 2.5 kg + ACCESSORIES 0.4 kg
Allowable ambient temperature| 0 to 35°C| 0 to 35°C
Allowable ambient humidity| 80% RH or less| 80% RH or less

System

Step mode (Input)| Target temperature| Number of outdoor unit| Intelligent multiple outdoor unit control| System
---|---|---|---|---
Manual| –| 1| N/A| See (1-1) below
2-6| Apply| See (2-1) below
Not apply| See (1-1) below.*1
Auto| Supply air temp. control| 1-5| N/A| See (1-2) below
Return air temp. control| 1-5| N/A| See (1-3) below.

1. It is recommended to select Intelligent multiple outdoor unit control. Design local AHU controller to make sure the following points.
   • Minimum capacity request should be 20% or more of total capacity.
   • Operate all outdoor units when outdoor temperature is below -15 °C.

System configuration (Single outdoor unit)

(1-1) Manual step mode *1

1. Manual step mode:

   • Variable capacity request signals for heat pump need to be calculated by AHU local controller.
   • AHU local controller can send “Capacity steps” by nonvintage contact signals or analog signals to the interface unit.
   • Operation mode can be set by remote controller, external input or DIP switch. Note
   • Do NOT select STEP 0 for 3 minutes after compressor is ON. (Keep compressor ON for 3 minutes at least.)
   • When changing STEP, make it less than 5 steps in a single request, and keep at least 5 minutes interval between the changes.
   • Keep operation range shown at the following section 3.3.
   • Do NOT send STEP 0 during defrost operation.
   • Do NOT change operation mode frequently
     No.| Part name| System (1-1)
     ---|---|---
     1| Interface unit|
     2| Remote controller|
     3| Outdoor unit|
     4| Target air temp. thermistor (TH1)| — 2
     5| Ref. liquid temp. thermistor (TH2)|
     6| 2-Phase temp. thermistor (TH5)| 3
     7| HEX inlet (Coil on) temp. thermistor (TH11)|
     8| Air-Handling Unit (AHU) (Local supply)|
     9| AHU local controller (Local supply)|
     10| Heat exchanger of AHU (Local supply)|
     11| Target air temp. thermistor (Local supply)|
     12| Louver (Local supply)|
     13| Air filter (Local supply)|
     14| Heat recovery (Local supply)|
     15| Fan (Local supply)|

2. Set the DIP SW 2-8 to ON.
   If outdoor unit is SHW series, It’s not needed to install this thermistor, and set the DIP SW 1-5 to ON.(1-2) Auto step mode *4 & Supply air temp. control.
   

3. Auto step mode:

   • In this mode, the capacity step of the outdoor unit is controlled automatically to let the target temperature reach the set temperature.
     Note

   • Auto change over function between cooling and heating mode is NOT available in this system.

   • Keep operation range shown at the following section 3.3.

   • Standard setting of DIP SW3-4 and SW3-5 is 3°C (SW3-4 : ON , SW3-5 : OFF). (Refer to “4.1.7 Switch setting”.)
     No.| Part name| System (1-2)
     ---|---|---
     1| Interface unit|
     2| Remote controller|
     3| Outdoor unit|
     4| Target air temp. thermistor (TH1)|
     5| Ref. liquid temp. thermistor (TH2)|
     6| 2-Phase temp. thermistor (TH5)| *5
     7| HEX inlet (Coil on) temp. thermistor (TH11)|
     8| Air-Handling Unit (AHU) (Local supply)|
     9| AHU local controller (Local supply)|
     10| Heat exchanger of AHU (Local supply)|
     11| Target air temp. thermistor (Local supply)| —
     12| Louver (Local supply)|
     13| Air filter (Local supply)|
     14| Heat recovery (Local supply)|
     15| Fan (Local supply)|

If outdoor unit is SHW series, It’s not needed to install this thermistor, and set the DIP SW 1-5 to ON.
(1-3) Auto step mode 6 & Return/ Room air temp. control 7

4. Auto step mode:

   •   * In this mode, the capacity step of the outdoor unit is controlled automatically to let the target temperature reach the set temperature.  

     Return/Room air temp. control:

   • Set the DIP SW 1-7 to ON.
     Note

   • Auto change over function between cooling and heating mode is available ONLY when this system is selected and the input selection of capacity setting (DIP SW1 and SW6) is ″No input (Auto step mode)″.

   • Keep operation range shown at the following section 3.3

   • If outdoor unit is SHW series, It’s not needed to install this thermistor, and set the DIP SW 1-5 to ON.

5. If outdoor unit is SHW series, It’s not needed to install this thermistor, and set the DIP SW 1-5 to ON.

6. Auto step mode:

   • In this mode, the capacity step of the outdoor unit is controlled automatically to let the target temperature reach the set temperature.

7. Return/Room air temp. control:

   • Set the DIP SW 1-7 to ON.
     Note

   • Auto change over function between cooling and heating mode is available ONLY when this system is selected and the input selection of capacity setting (DIP SW1 and SW6) is ″No input (Auto step mode)″.

   • Keep operation range shown at the following section 3.3
     No.| Part name| System (1-3)
     ---|---|---
     1| Interface unit|
     2| Remote controller|
     3| Outdoor unit|
     4| Target air temp. thermistor (TH1)|
     5| Ref. liquid temp. thermistor (TH2)|
     6| 2-Phase temp. thermistor (TH5)|
     7| HEX inlet (Coil on) temp. thermistor (TH11)|
     8| Air-Handling Unit (AHU) (Local supply)|
     9| AHU local controller (Local supply)|
     10| Heat exchanger of AHU (Local supply)|
     11| Target air temp. thermistor (Local supply)|
     12| Louver (Local supply)|
     13| Air filter (Local supply)|
     14| Heat recovery (Local supply)|
     15| Fan (Local supply)|

8. If outdoor unit is SHW series, It’s not needed to install this thermistor, and set the DIP SW 1-5 to ON.

*System configuration
(Intelligent multiple outdoor unit control 1)**

(2-1) Manual step mode (example)

1. Interface system receives step request signal correspond to total capacity of outdoor units, and calculates necessary capacity for each outdoor unit automatically.
   Note

   • This intelligent multiple outdoor unit control function is available only when Manual step mode is selected.
   • Up to 6 outdoor units can be connected.
   • 2 different type of outdoor units (capacity and/or series) can be mixed, but connecting the same capacity outdoor units is highly recommended.
   • Ref. address setting on each outdoor unit is needed.
   • Interface unit which connects to the Ref. address 0 outdoor unit, becomes main interface unit.
   •  Connect AHU local controller (Part No. 9) to the main interface unit.
   • Connect ONE remote controller (Part No. 2) to the interface unit.
   • Connect between the interface units with a remote controller (daisy chain). MAX : 500m
   • When using this function, set the DIP SW 1-8 of all interface unit to ON.
   • Do NOT select STEP 0 for 3 minutes after compressor is ON. (Keep compressor ON for 3 minutes at least.)
   • When changing STEP, make it less than 5 steps in a single operation, and keep at least 5 minutes interval between the changes.
   • Keep operation range shown at the following section 3.3.
   • Do NOT send STEP 0 during defrost operation.
   • Do NOT change operation mode frequently.
     No.| Part name| System (2-1)
     ---|---|---
     1| Interface unit|
     2| Remote controller|
     3| Outdoor unit|
     4| Target air temp. thermistor (TH1)| — 2
     5| Ref. liquid temp. thermistor (TH2)|
     6| 2-Phase temp. thermistor (TH5)| 3
     7| HEX inlet (Coil on) temp. thermistor (TH11)|
     8| Air-Handling Unit (AHU) (Local supply)|
     9| AHU local controller (Local supply)|
     10| Heat exchanger of AHU (Local supply)|
     11| Target air temp. thermistor (Local supply)|
     12| Louver (Local supply)|
     13| Air filter (Local supply)|
     14| Heat recovery (Local supply)|
     15| Fan (Local supply)|

2. Set the DIP SW 2-8 to ON.

3. If outdoor unit is SHW series, It’s not needed to install this thermistor, and set the DIP SW 1-5 to ON.

Indoor operation range

Mode| Number of outdoor unit| HEX inlet air temp. operation range
---|---|---
Cooling| 1 or more| 15 – 32 °C
**** Heating| 1| 0 – 28 °C
2 or more| 5 – 28 °C

Electrical work

Electrical connection
All electrical work should be carried out by a suitably qualified technician. Failure to comply with this could lead to electrocution, fire, and death. All wiring should be according to national wiring regulations.
Connections should be made to the terminals indicated in the following figures.

Use ring terminals and insulate the wires.
Tighten the screw from the bottom terminals first.

Notes

1. Do not run the low voltage cables through a slot that the high voltage cables go through.
2. Do not bundle power cables together with other cables.
3. Bundle cables as Fig. 4.1.1 by using clamps.

Interface unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.

A Outdoor unit power supply
B Earth leakage breaker 1, 2
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Interface unit/outdoor unit connecting cables
F Interface unit

1. If the installed earth leakage circuit breaker does not have a function to protect over-current, install a breaker with that function along the same power line.

2. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.
   Note:
   In accordance with IEE regulations the circuit breaker/isolating switch located on the outdoor unit should be installed with lockable devices (health and safety).Wiring Wire No.× size(mm²)| Interface unit – Outdoor unit| 3| 3 × 1.5 (polar)
   ---|---|---|---
   Interface unit – Outdoor unit earth| 3| 1 × Min. 1.5
   Circuit rating| Interface unit – Outdoor unit S1-S2| 4| 230 V AC
   Interface unit – Outdoor unit S2-S3| 4| 24 V

3. Max. 45 m
   If 2.5 mm² used, Max. 50 m
   If 2.5 mm² used and S3 separated, Max. 80 m

4. The values given in the left table are not always measured against the ground value.

Notes:

1. Wiring size must comply with the applicable local and national code.
2. Interface unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57) Interface unit power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)
3. Install an earth longer than other cables.

Separate interface unit/outdoor unit power supplies
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.

A Outdoor unit power supply
B Earth leakage breaker 1, 2
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Interface unit/outdoor unit connecting cables
F Interface unit
G Interface unit power supply

1. If the installed earth leakage circuit breaker does not have a function to protect over-current, install a breaker with that function along the same power line.
   Note:
   In accordance with IEE regulations the circuit breaker/isolating switch located on the outdoor unit should be installed with lockable devices (health and safety).
   If the interface and outdoor units have separate power supplies, refer to the table below.
   | Separate power supply specifications
   ---|---
   Interface unit controller connector(CNS2) connection change| Disconnected
   Outdoor unit DIP switch settings (when using separate interface unit/outdoor unit power supplies only)| (SW8)Set the SW8-3 to ON.
   Interface unit power supply| ~/N 230 V 50 Hz
   Interface unit input capacity Main switch (Breaker)2| 16 A
   Wiring Wire No. × size(mm²)| Interface unit power supply| 2 × Min. 1.5
   Interface unit power supply earth| 1 × Min. 1.5
   Interface unit-Outdoor unit3| 2 × Min. 0.3
   Interface unit-Outdoor unit earth| —
   Circuit rating| Interface unit L-N4| 230 V AC
   Interface unit-Outdoor unit S1-S24| —
   Interface unit-Outdoor unit S2-S3*4| 24 V
2. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.
3. Max. 120 m
4. The values given in the left table are not always measured against the ground value.

Notes

1. Wiring size must comply with the applicable local and national code.
2. Interface unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57) Interface unit power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)
3. Install an earth longer than other cables.

Connecting thermistor cable

Connect the thermistor 2 for the interface controller.

1. Target temp. thermistor (TH1)
   Connect the thermistor for the target temp. to 1 and 2 on the terminal block (TB61) on the interface controller.

2. HEX inlet temp. thermistor (TH11)
   Connect the thermistor for the HEX inlet temp. to 3 and 4 on the terminal block (TB61) on the interface controller.

3. Ref. liquid temp. thermistor (TH2)
   Connect the thermistor for the ref. liquid temp. to 5 and 6 on the terminal block (TB61) on the interface controller.

4. phase temp. thermistor (TH5)
   Connect the thermistor for the 2-phase temp. to 7 and 8 on the terminal block (TB61) on the interface controller.

When the thermistor cables are too long, cut it to the appropriate length.
Do not bind it in the interface unit.
The 4 thermistors have the same specification except the color of cables, thus we do not specify which thermistor should be installed to which position.

Note: When multiple outdoor units are connected, connect thermistors to each interface unit respectively.

Caution:
Do not route the thermistor cables together with power cables.
The sensor part of the thermistor should be installed where user can not access. (It should be separated by the supplementary insulation from areas the user can access.

Connecting external input
Demand control is available by external input.
Select input type by setting the switch of the interface controller, and it is possible to set capacity request when manual step mode (“Analog input” , “Remote switch” or “Modbus”) is selected.

Switch1, Switch 6 : Input selection of inverter capacity setting

“Capacity setting” table below.
REMOTE SWITCHType B (1bit-1 setting)| ON| OFF| OFF| OFF| OFF
Analog (4-20mA)| ON| ON| OFF| ON| ON
Analog (1-5V)| ON| ON| OFF| OFF| ON
Analog (0-10V)| OFF| OFF| ON| OFF| OFF
Analog (0-10kΩ)| ON| OFF| ON| OFF| OFF
No input (Auto step mode)| OFF| ON| ON| OFF| OFF| Only Auto step mode
Modbus| ON| ON| ON| OFF| OFF| OFF/Step1/Step2/…/Step11

Capacity setting

Analog input| Step for capacity setting| Remote switch| Step for capacity setting| Remark
---|---|---|---|---
Variable resistor (0-10kΩ)| 4-20mA| 1-5V| 0-10V| Analog input| TB 6210-11 (COM-IN5)| TB 6210-12 (COM-IN6)| TB 6210-13 (COM-IN7)| TB 6210-14 (COM-IN8)| Remote SW (Type A)| Remote SW (Type B)
OPEN(12kΩ-)| –| –| –| OFF| –| –| –| –| –| –| Stop
10kΩ| –| –| –| Auto| OFF| OFF| OFF| ON| Auto| Auto| Auto step mode
7.5kΩ| 19-20mA| 4.75-5V| 9.75-10V| Step11                max.| ON| ON| ON| OFF| Step11      max.| –| **** Hz fixed mode
–| –| –| 9.02V| Step10| –| –| –| –| –| –
5.6kΩ| 17mA| 4.25V| 8.20V| Step9| OFF| ON| ON| OFF| Step9| –
4.3kΩ| 15mA| 3.75V| 7.38V| Step8| ON| OFF| ON| OFF| Step8| –
–| –| –| 6.56V| Step7| –| –| –| –| –| –
3.3kΩ| 13mA| 3.25V| 5.75V| Step6| OFF| OFF| ON| OFF| Step6| Step11      max.
–| –| –| 4.93V| Step5| –| –| –| –| –| –
2kΩ| 11mA| 2.75V| 4.11V| Step4| ON| ON| OFF| OFF| Step4| –
1kΩ| 9mA| 2.25V| 3.29V| Step3| OFF| ON| OFF| OFF| Step3| Step6
–| –| –| 2.47V| Step2| –| –| –| –| –| –
510Ω| 7mA| 1.75V| 1.66V| Step1        min.| ON| OFF| OFF| OFF| Step1 min.| Step1        min.
0-100Ω| 4-5mA| 0-1.25V| 0-0.63V| OFF| OFF| OFF| OFF| OFF| OFF| OFF| Stop

• 4-20mA / 1-5V / 0-10V / 0-10kΩ

  1. Use 4-20mA / 1-5V / 0-10V
     Connect the transmission cables to No. 11 and 12 on the terminal block (TB61).
     No. 11 on the terminal block(TB61) : Plus side
     No. 12 on the terminal block(TB61) : Minus side (Reference side)

  2. Use variable resistor (0-10kΩ)
     Connect the transmission cables to No. 9 and 10 on the terminal block (TB61).

Note:
The values of the “capacity setting” table on the previous page show the center of the input value. Cable length: Maximum 10

• Remote switch Type A (4 bit – 8 setting)/Type B (1 bit – 1 setting)
  
  Demand control is available by connecting remote switches with terminal No.10 – 14. Make sure to use the non-voltage switch (for the remote switch) Remote switch cable length : Maximum 10m Remote switch : Minimum applicable load 12V DC, 1mA
  Note:
  When using intelligent multiple outdoor unit control function, input the capacity request signal to the main interface which connects to the ref. address 0 outdoor unit.

• External function setting
  This function is setting operation mode or stopping compressor, by the external signal.TB62| Item| OFF| ON| Remark
  ---|---|---|---|---
  1-2 (IN1)| Forced Comp. OFF *1| Normal| Forced Comp. OFF|
  3-4 (IN2)Item| Fixed operation mode| Cooling| Heating| Available when SW2-1 and SW2-2 are

• The operation continues during defrosting operation.
  The “Forced Comp. OFF” signal should not be turned ON frequently. It should only be used if an abnormality occurs.
  Cable length : Maximum 10m
  Remote switch : Minimum applicable load 12V DC, 1mA

Note:
When using IN1 with intelligent multiple outdoor unit control function, input IN1 to the interface unit respectively. Input IN2 to the main interface which connects to the ref. address 0 outdoor unit.

Caution:
The external input signals are separated by basic insulation from power supply for the unit. The external input signals should be separated by supplementary insulation from where user may touch in case that it is installed where user may touch. Connect the terminals by using the ring terminals and also insulate the cables of adjoining terminals when wiring to terminal block.

Connecting External Output

• The output may not be available depending on connected outdoor unit models.
  Cable length : Maximum 50m
  Output specification : Non-voltage switch 1A, 240V AC/30V DC or less 10 mA, 5 V DC or more

• Connect the surge absorber according to the load at site.
  

Notes:

• External output signals are separated by basic insulation from other circuit of interface.
• When intelligent multiple outdoor unit control function is selected, OUT2, OUT3, OUT4, OUT7 and OUT8 will work individually on each interface.
  Caution: When 2 or more external outputs are used, the power supply on the output side should be the same.

Wiring specification External output / External input Locally supplied parts

coated cord or cable. Wire type : CV, CVS or equivalent.Wire size : Stranded wire 0.5mm2 to 1.25mm2Solid wire: {0.65mm to {1.2mm
Display lamp, etc.| Non-voltage Contact 220-240V AC (30V DC), 1A or less10 mA, 5 V DC or more
External input function| External input signal wire| Use sheathed vinyl coated cord or cable. Wire type : CV, CVS or equivalent.Wire size : Stranded wire 0.5mm2 to 1.25mm2Solid wire : {0.65mm to {1.2mm
Switch| Non-voltage “a” contact

Switch setting
It is possible to set the following function by setting the switch of the interface controller.

SW2-1/2-2 : Fixed operation mode

SW2-3/2-4/2-5 : Fixed set temperature [For Auto step mode only]

Set switches in case of auto step mode.

SW3-4/3-5 : Thermo OFF point by HEX inlet air temp.
(difference between target temp. and HEX inlet temp.)
[For Auto step mode and supply air temp. control] Compressor is forced to stop when HEX inlet temp. is close to target temp. to reduce frequent ON/OFF cycling under low heating/cooling load condition.

Standard setting: 3°C

Other DIP switch setting

Return Air temp. control
SW1-8| Intelligent multiple outdoor units control| Inactive| Active
SW2-6| LEV self control 2| OFF| ON
SW2-7| Ref. liquid temp. thermistor (TH2) 2| WITH| WITHOUT
SW2-8| Target temp. thermistor (TH1)| WITH| WITHOUT

1. This function is valid only with remote controller.
2. This SW must be set to “OFF”.

Before test run
After completing installation and the wiring and piping of the local application and outdoor units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply.

Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at least 1.0MΩ.

Warning:
Do not use the system if the insulation resistance is less than 1.0MΩ.
Caution:
Do not carry out this test on the control wiring (low voltage circuit) terminals

Using SD memory card
The interface unit is equipped with an SD memory card interface. Using an SD memory card can store operating logs.

(a) For insertion, push on the SD memory card until it clicks into place.
(b) For ejection, push on the SD memory card until it clicks.
Note: To avoid cutting fingers, do not touch sharp edges of the SD memory card connector (CN108) on the interface controller.

Handling Precautions

1. Use an SD memory card that complies with the SD standards. Check that the SD memory card has a logo on it of those shown to the right.

2. SD memory cards to the SD standards include SD, SDHC, miniSD, micro SD, and microSDHC memory cards. The capacities are available up to 32 GB. Choose that with a maximum allowable temperature of 55ºC.

3. When the SD memory card is a miniSD, miniSDHC, microSD, or micro SDHC memory card, use an SD memory card converter adapter.

4. Before writing to the SD memory card, release the write-protect switch.

5. Before inserting or ejecting an SD memory card, make sure to power off the system. If an SD memory card is inserted or ejected with the system powered on, the stored data could be corrupted or the SD memory card be damaged. *An SD memory card is live for a short duration after the system is powered off. Before insertion or ejection wait until the LED lamps on the interface control board are all off.

6. The read and write operations have been verified using the following SD memory cards, however, these operations are not always guaranteed as the specifications of these SD memory cards could change.
   Manufacturer| Model| Tested in
   ---|---|---
   Verbatim| #44015 0912-61| Mar. 2012
   SanDisk| SDSDB-002G-B35| Oct. 2011
   Panasonic| RP-SDP04GE1K| Oct. 2011
   Arvato| 2GB PS8032 TSB 24nm MLC| Jun. 2012
   Arvato| 2GB PS8035 TSB A19nm MLC| Jul. 2014
   Lexar| LSD 8GB ABEUCL6 Rev A| Jul

Before using a new SD memory card, always check that the SD memory card can be safely read and written to by the interface board. a) Check for correct wiring of power supply to the system. For more details, refer to section 4.1.
a) Do not power on the system at this point.)
b) Insert an SD memory card. c) Power on the system.
d) The LED6 lamp lights if the read and write operations are successfully completed.
If the LED6 lamp continues blinking or does not light, the SD memory card cannot be read or written to by the interface controller

7. Make sure to follow the instruction and the requirement of the SD memory card’s manufacturer.
8. Format the SD memory card if determined unreadable in step (6). This could make it readable. Download an SD card formatter from the following site. SD Association homepage: https://www.sdcard.org/home/
9. Interface board supports FAT file system but not NTFS file system.
10. Mitsubishi Electric is not liable for any damages, in whole or in part, including failure of writing to an SD memory card, and corruption and loss of the saved data, or the like. Back up saved data as necessary.
11. Do not touch any electronic parts on the interface controller when inserting or ejecting an SD memory card, or else the control board could fail.

The SD Logo is a trademark of SD-3C, LLC.
The mini SD logo is a trademark of SD-3C, LLC.
The microSD logo is a trademark of SD-3C, LLC.
A 2-GB SD memory card stores up to 30 days of operation logs.

Connecting the remote controller

Connect the remote controller cable to Interface unit

Connect the remote controller cable to 13 and 14 on the terminal block (TB61) on
the interface controller . <Fig. 4.3.1>
Wiring wire No. × size (mm²): 2 × 0.3 (non polar)
The 5 m wire is attached as an accessory. Max. 500 m
Wiring size must comply with the applicable local and national codes.
Circuit rating: 12V DC
Circuit rating is NOT always against the ground.

Notes:
Wiring for remote controller cable shall be (5 cm or more) apart from power source wiring so that it is not influenced by electric noise from power source wiring. (Do not insert the remote controller cable and power source wiring in the same conduit.) (Refer to Fig. 4.1.1 ) When wiring to TB61, use the ring type terminals and insulate them from the cables of adjoining terminals.

Installing the remote controller

1. The remote controller can be installed either in the switch box or directly on the wall. Perform the installation properly according to the method.
2. Secure clearances shown in <Fig. 4.3.2> regardless of whether installing the remote controller either directly on the wall or in the switch box.
   
   **< Fig. 4.3.3>

< Fig. 4.3.4>

**

2. Prepare the following items in the field. Double switch box Thin metal conduit Locknut and bushing Cable cover Wall plug.

2. Drill an installation hole in the wall.

   • Installation using a switch box
   • Drill a hole in the wall for the switch box, and install the switch box in the hole.
   • Fit the conduit tube into the switch box.
   • Direct wall installation
   • Drill a cable access hole and thread the remote controller cable through it
     Caution:
     To prevent entry of dew, water, and insects, seal the gap between the cable and the hole through which the cable is threaded with putty. Otherwise, electric shock, fire, or failure may result.

3. Have the remote controller ready.
   Remove the bottom case from the remote controller.

4. Connect the remote controller cable to the terminal block on the bottom case. Modify the remote controller cable as shown in <Fig. 4.3.5>, and thread the cable from behind the bottom case.
   
   Completely thread the cable to the front so that the unsheathed part of the cable cannot be seen behind the bottom case. Connect the remote controller cable to the terminal block on the bottom case.
   Direct wall installation
   
   

   • Seal the gap between the cable and the hole through which the cable is threaded.
     Caution
     To prevent electric shock or failure, keep the sheath ends or any other foreign objects out of the terminal block. Do not use ring terminals to connect the wires to the terminal block on the bottom case. The terminals will come in contact with the control board and the front cover and top case, which will result in failure.

5. Install the bottom case

   • Installation using a switch box
     When installing the bottom case in the switch box, secure at least two corners of the switch box with screws.

   • Direct wall installation

   • Thread the cable through the slot provided.

   • When mounting the bottom case on the wall, secure at least two corners of the remote controller with screws.

   • To prevent the bottom case from lifting, use top-left bottom-right corners of the remote controller (viewed from the front) to secure the bottom case to the wall with wall plugs or the like.
     Caution:
     To avoid causing deformation or cracks to the remote controller, do not overtighten the screws and make an additional installation hole(s).

6. Cut out the cable access hole

   • Direct wall installation
   • Cut out the knockout hole (indicated with grey in < Fig. 4.3.7>) in the front cover by knife or nipper.
   • Thread the remote controller cable from the slot behind the bottom case through this access hole.

7. Plug the lead wire cable into the top case.

8. Plug the lead wire cable coming from the bottom case into the top case.
   
   Caution:
   To avoid failures, do not remove the controller board protective sheet and the controller board from the top case. After the cable is plugged into the top case, do not hang the top case as shown in < Fig. 4.3.8 >. Otherwise, the remote controller cable could sever, which could cause malfunction to the remote controller.

9. Fit the lead wires into the clamps.
   
   Caution:
   Hold the wires in place with clamps to prevent excessive strain from being applied on the terminal block and causing cable breakage.
   Fit the top case and the front cover onto the bottom case.
   
   The top case assembly (fitted with the front cover at factory shipment) has two tabs on top. Hook the tabs onto the bottom case and snap the top case onto the bottom case into place. Check that the cover is securely installed.
   Caution:
   When the top case is correctly attached to the bottom case a click is heard. If the front cover is not clicked into place it may fall off.

   • Direct wall installation (when routing the remote controller cable along the wall surface)
   • Thread the remote controller cable through the cable access hole at the top of the remote controller.
   • Seal the gap between the cable and the access hole with putty.
   • Use a cable cover.

Disassembling the top case and the front cover

1. Remove the front cover.
   Insert a flat head screwdriver into either of two open slots at the bottom of the remote controller and move the screwdriver handle downward as shown. The engagement of the tabs will be released. Then pull the front cover toward the front to remove the front cover.

2. Remove the top case.
   Insert a flat head screwdriver into either of two open slots at the bottom of the remote controller. The subsequent procedure is the same as that of the front cover.

Caution:
Use a 5 mm- flat head screwdriver. Do not turn the screwdriver forcibly while placing the blade in the slots. Doing so could break the covers.

Remote controller operation

Disposal of the Unit
Note: This symbol mark is for EU countries only. This symbol mark is according to the directive 2012/19/EU Article 14 Information for users and Annex IX, and/or to the directive 2006/66/EC Article 20 Information for end- users and Annex II.

Your Mitsubishi Electric heating system products have been manufactured with high quality materials and components which can be recycled and/or reused. The symbol in Figure 5.1 means that electrical and electronic equipment, batteries and accumulators at the end of their life, should be disposed of separately from your household waste.

If a chemical symbol is printed beneath the symbol (Figure 5.1), this chemical symbol means that the battery or accumulator contains a heavy metal at a certain concentration. This is indicated as follows;

Hg: mercury (0.0005%), Cd: (cadmium (0.002%), Pb: lead (0.004%) In the European Union there are separate collection systems for used electrical and electronic products, batteries and accumulators. Please dispose of this equipment, batteries and accumulators correctly at your local community waste collection/recycling centre.

Contact your local Mitsubishi Electric dealer for country-specific details on disposal.

Please, help us to conserve the environment we live in.

Safety precautions

• 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.
• Please report to or take consent by the supply authority before connection to the system.

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 illustrations
: Indicates a part which must be grounded.

Warning:

• The unit must not be installed by the user. Ask the dealer or an authorized company to install the unit. If the unit is installed improperly, electric shock or fire may result.
• Do not stand on, or place any items on the unit.
• Do not splash water over the unit and do not touch the unit with wet hands.An electric shock may result.
• Do not spray combustible gas close to the unit. Fire may result.
• Do not place a gas heater or any other open-flame appliance where it will be exposed to the air discharged from the unit. Incomplete combustion may result.
• Do not remove the front panel or the fan guard from the outdoor unit when it is running.
• When you notice exceptionally abnormal noise or vibration, stop operation, turn off the power switch, and contact your dealer.
• Never insert fingers, sticks etc. into the intakes or outlets.
• If you detect odd smells, stop using the unit, turn off the power switch and consult your dealer. Otherwise, a breakdown, electric shock or fire may result.
• If the supply cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• 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.
• If the refrigeration gas blows out or leaks, stop the operation of the air conditioner, thoroughly ventilate the room, and contact your dealer.
• Do not install in location that is hot or humid for long periods of time.

Caution

• Do not use any sharp object to push the buttons, as this may damage the remote controller.
• Never block or cover the interface unit’s intakes or outlets.

Disposing of the unit
When you need to dispose of the unit, consult your dealer.

Remote controller operation

Names and functions of controller components

Display
The main display can be displayed in two different modes: “Full” and “Basic.” The factory setting is “Full

Full mode

Basic mode

1. Operation mode
   Interface unit operation mode appears here.

2. Preset temperature
   Preset temperature appears here. It is valid only when auto step mode is selected.

3. Clock
   Current time appears here.

4. Fan speed
   This function is not available.

5. Button function guide
   Functions of the corresponding buttons appear here.

6. Appears when the ON/OFF operation is centrally controlled.

7. Appears when the operation mode is centrally controlled.

8. Appears when the preset temperature is centrally controlled.

9. Room temperature
   Current room temperature appears here.

10. Appears when the buttons are locked.

11. Appears when the On/Off timer function is enabled.

12. Appears when the Weekly timer is enabled.

13. Appears while power is ON.

14. Appears when the built-in thermistor on the remote controller is activated to monitor the room temperature (9).

15. appears when the thermistor on the interface unit is activated to monitor the room temperature.

16. Appears when the preset temperature range is restricted.

Controller interface

The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.

• When the backlight is off, pressing any button turns the backlight on and does not perform its function. (except for the ON/OFF button)
• Most settings (except ON/OFF , mode, fan speed, temperature) can be made from the Menu screen.

1. button
   Press to turn ON/OFF the interface unit.

2. button
   Press to save the setting.

3. button
   Press to return to the previous screen

4. button
   Press to bring up the Main menu

5. Backlit LCD
   Operation settings will appear. When the backlight is off, pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen.

6. ON/OFF lamp
   This lamp lights up in green while the unit is in operation. It blinks while the remote controller is starting up or when there is an error.

7. Function button
   Main display: Press to change the operation mode.
   Main menu: Press to move the cursor down.

8. Function button
   Main display: Press to decrease temperature.
   Main menu: Press to move the cursor up.

9. Function button
   Main display: Press to increase temperature.
   Main menu: Press to go to the previous page

10. Function button
    Main display: Not available.
    Main menu: Press to go to the next page.

Remote controller operation

Initial settings
From the Main display, press “MENU” button, select “Initial setting”, and make the remote controller settings on the screen that appears.

• Main/Sub
• Clock
• Main display
• Contrast
• Display details
• Clock
• Temperature
• Room temp.
• Auto mode (Auto cooling/heating operation)
• Auto mode (Auto cooling/heating operation)
• Administrator password
• Language selection

1. Main/Sub setting
   When connecting two remote controllers, one of them needs to be designated as a sub controller.

2. Clock setting
   Clock setting is necessary for time display, SD card data logging, weekly timer, timer setting and error history. Make sure to perform clock setting when the unit is used for the first time or has not used for a long time.

3. Main display setting
   Use the F3 or F4 button to select the display mode “Full” or “Basic.” (The factory setting is “Full.”)

4. Remote controller display details setting
   
   Make the settings for the remote-controller-related items as necessary. Press the SELECT button to save the changes.

5. Clock display

6. Temperature unit setting

7. Room temperature display

8. Auto mode (Auto cooling/heating operation) display setting
   (The factory setting is “Yes”.)

  * Yes: “AUTO COOL” or “AUTO HEAT” is displayed during Auto mode (Auto cooling/ heating operation).
  * No: Only “AUTO” is displayed during Auto mode (Auto cooling/heating operation).

5. Auto mode (Auto cooling/heating operation) setting
   Yes: The Auto mode (Auto cooling/heating operation) can be selected in the operation mode setting.
   No: The Auto mode (Auto cooling/heating operation) cannot be selected in the operation mode setting. (The factory setting is “Yes”.)

6. Administrator password setting

   • The initial administrator password is “0000.” Change the default password as necessary to prevent unauthorized access. Have the password available for those who need it.
   • If you forget your administrator password, you can initialize the password to the default password “0000” by pressing and holding the F1 and F2 buttons simultaneously for three seconds on the administrator password setting screen.
   • The administrator password is required to make the settings for the following items.
   • Timer setting
   • Weekly timer setting
   • Restriction setting

Basic operations

Operation mode icons

Turning ON and selecting operation mode

1. ****Press button
2. Press button 7 ( F1 ) to go through the operation mode
   The ON/OFF lamp and the LCD will light up
   

Operation mode is available ONLY when input selection of capacity setting (DIP SW1 and SW6) is “No input (Auto step mode)” and Return air temp. control is selected (DIP SW 1-7 is ON).

Preset temperature setting

Press button 8 ( F2 ) to decrease the preset temperature.
Press button 9 ( F3 ) to increase the preset temperature.

• Pressing once changes the value by 1ºC (1ºF).

The temperature range restriction setting will be applied preferentially, if any. If the setting value is outside of the range, a message “Temp. range locked” will appear.

Automatic cooling/heating operation

1. Press button 1 ( ON/OFF ).
2. Press button 7 ( F1 ) to display the operation mode

When the room temperature is higher than the preset temperature, cooling operation starts.
When the room temperature is lower than the preset temperature, heating operation starts

The current operation mode (“Auto cool” or “Auto heat”) will be displayed after the mode is determined. If “Display/non-display of COOL/HEAT during AUTO mode” has been set to “Non-display” while making the initial settings, only “Auto” will be displayed.

Troubleshooting

When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer.

Error code, error unit, refrigerant address, unit model name, and serial number will appear.

The model name and serial number will appear only if the information have been registered.

Press button 7 ( F1 ) or 8 ( F2 ) to go to the next page.

Contact information (dealer’s phone number) will appear if the information have been registered.

Timer and Weekly timer

The settings for Timer and Weekly timer operation can be made from the remote controller.
Press button 4 ( MENU ) to go to the Main menu, and move the cursor to the desired setting with button 7 ( F1 ) or 8 ( F2 ).

Timer

• On/Off timer
  Operation On/Off times can be set in 5-minute increments.

• Auto-Off timer
  Auto-Off time can be set to a value from 30 to 240 in 10-minute increments.

Weekly timer

Operation On/Off times for a week can be set. Up to eight operation patterns can be set for each day

Service

Maintenance password setting

• The initial administrator password is “9999”. Change the default password as necessary to prevent unauthorized access. Have the password available for those who need it.
• If you forget your administrator password, you can initialize the password to default password “9999” by pressing and holding the F1 and F2 buttons simultaneously for three seconds on the maintenance password setting screen.

Others

The following functions are NOT available.
(1) In main menu (Press button 4 (MENU), main menu appears.)

• Vane Louver Vent (Lossnay)”
• “High power”
• “OU silent mode”
• In “Energy saving” menu, “schedule” function is NOT available.
• “Filter information”
• “Maintenance”
• In “Service” menu, “Drain pump test run”, “Check” functions are NOT available, except for “Request code” in “Check” function.

Service and Maintenance

Error Codes

• Check connection of thermistor.
• Check resistance value of thermistor.0ºC 15.0 kΩ10ºC 9.6 kΩ20ºC 6.3 kΩ30ºC 4.3 kΩ

**** P2| Ref. liquid temperature thermistor (TH2) failure|

• Check connection of thermistor.
• Check resistance value of thermistor. For characteristics, refer to (P1) above.

P6| Freezing/ overheating protection|

• Check local system if air flow is reduced.
• Check outdoor fan motor.

**** P9| 2-Phase temperature thermistor (TH5) failure|

• Check connection of thermistor.
• Check resistance value of thermistor. For characteristics, refer to (P1) above.

**** E0 – E5| Communication failure between remote controller and interface controller board|

• Check connection cable for damage or loose connections.
• Check system configuration of remote controller.(Refer to “3. System”)

**** E6 – E7| Communication failure between interface unit and outdoor unit|

• Check that outdoor unit has not been turned off.
• Check connection cable for damage or loose connections.
• Refer to outdoor unit service manual.

Fb| Interface controller board failure|

• Replace interface controller board.

**** PL| Abnormal refrigerant circuit|

• Replace the 4-way valve.
• Check refrigerant pipes for disconnection or leakage.
• Refer to outdoor unit service manual.

**** PU| HEX inlet temperature thermistor (TH11) failure|

• Check connection of thermistor.
• Check resistance value of thermistor. For characteristics, refer to (P1) above.

**** “EE” or “System error 1”| DIP SW setting error(Intelligent multiple outdoor unit control)|

• Set DIP SW 1-8 to “OFF”, if system is single outdoor unit control.
• Connect between interface units and set Ref. address of each outdoor unit. (See “3. System”.)

System error 2| Controller board is incompatible with this model.|

•  Install interface controller board that is compatible with PAC-IF013B-E or PAC-SIF013B-E.

System error 3| Incompatible controller board is mixed when multiple interface units are connected.|

• Check all interface controller boards are compatible with PAC- IF013B-E or PAC-SIF013B-E.

System error 4| DIP SW 1-8 of some interface units are ON and those of the other interface units are OFF.|

• Set DIP SW 1-8 of all interface units to ON, or SW1-8 of all interface units to OFF.

**** “System error 5” or “System error 6”| 2 or more Interface units are connected with one remote controller and manual step mode is selected, but DIP SW1-8 are OFF.|

• Set SW1-8 of all interface units to ON if system is intelligent multiple outdoor unit control.
• Disconnect between interface units and connect remote controllers separately to each interface unit, if manual step mode is selected and intelligent multiple outdoor unit control is not selected.

System error 11| 7 or more interface units are connected. (Up to 6 interface units can be connected.)|

• Connect 6 or less interface units in one system.

“6831” or”Please wait” remains displayed on the remote controller for more than 6 minutes.| Remote controller is incompatible with this model.|

• Remote controller included in the package of PAC-IF013B-E is exclusive for PAC-IF013B-E or PAC-SIF013B-E. Use the remote controller that has a drawing number “BH00J360” on the bottom.

Requirement on local design

• This interface is to connect Mr. Slim inverter outdoor unit of MITSUBISHI ELECTRIC to local applications. Please check the following when designing the local system.
• MITSUBISHI ELECTRIC does not take any responsibility on the local system design. Therefore, MITSUBISHI ELECTRIC does NOT take any responsibility on the failure (including outdoor unit) caused by local AHU and system design. Also R32 is flammable refrigerant, and the fire safety warranty for the whole system (including outdoor unit) must be done by your side when using R32 refrigerant.
• Conformity of regulations and laws must be confirmed on the system by your side.
• See the document “AIR-HANDLING UNIT (AHU) DESIGN GUIDELINE” for more information. To get it, contact your dealer.

Air flow volume
Standard air flow volume

37.8
[m³/h]| 372| 516| 630| 732| 978| 1290| 1380| 1956| 2268

Make sure to keep the air flow volume within the limits of maximum and minimum below.

Maximum air volume

Step mode| Number of outdoor unit| Capacities of the connected outdoor units| Maximum air volume
---|---|---|---
Manual| 2-6| The same| [For PUHZ-ZRP, P, SHW models] 500% of selected outdoor unit’s maximum standard air volume 1
[For PUZ-ZM models] 440% of selected outdoor unit’s maximum standard air volume 2
Different| [For PUHZ-ZRP, P, SHW models] If smaller capacity outdoor unit’s rated heating capacity is under 20% of total heating capacity, 500% of bigger capacity outdoor unit’s maximum standard air volume is allowable.If smaller capacity outdoor unit’s rated heating capacity is 20% or more of total heating capacity, 500% of smaller capacity outdoor unit’s maximum standard air volume is allowable.
[For PUZ-ZM models] If smaller capacity outdoor unit’s rated heating capacity is under 20% of total heating capacity, 440% of bigger capacity outdoor unit’s maximum standard air volume is allowable.If smaller capacity outdoor unit’s rated heating capacity is 20% or more of total heating capacity, 440% of smaller capacity outdoor unit’s maximum standard air volume is allowable.
1| –| 200% of selected outdoor unit’s maximum standard air volume
Auto| 2-5| –| [For PUHZ-ZRP, P, SHW models] 500% of the smallest capacity outdoor unit’s maximum standard air volume
[For PUZ-ZM models] 440% of the smallest capacity outdoor unit’s maximum standard air volume
1| –| 200% of selected outdoor unit’s maximum standard air volume

1. 600% of selected outdoor unit’s maximum standard air volume is available ONLY when 6 same capacity outdoor units are connected.
2. 528% of selected outdoor unit’s maximum standard air volume is available ONLY when 6 same capacity outdoor units are connected.

Note

• When multiple outdoor units are connected, basically select one interlaced heat exchanger which has multiple refrigerant circuit or multiple heat exchanger placed in parallel to the air flow. If multiple heat exchangers placed in series with the air flow have to be used, maximum 2 heat exchanger in series are acceptable.

Minimum air volume
Total amount of selected outdoor unit’s minimum standard air volume is allowable.

Indoor heat exchanger

1. Indoor heat exchanger volume
   Make sure to keep the HEX capacity within the following range.
   If the piping length is 30m or shorter, HEX capacity can be increased as follows.Model capacity of outdoor unit| ZRP| 35| 50| 60| 71| 100| 125| 140| 200| 250
   ---|---|---|---|---|---|---|---|---|---|---
   P| –| –| –| –| –| –| –| 200| 250
   SHW| –| –| –| 80| 112| 140| –| 230| –
   ZM| 35| 50| 60| 71| 100| 125| 140| –| –
   Max. volume [cm3]
   | Pipe length| 30m –| 1050| 1500| 1800| 2130| 3000| 3750| 4200| 6000| 7500
   20m| 1350| 1800| 2700| 3030| 3900| 4650| 5100| 7800| 9300
   10m| 1650| 2100| 3600| 3930| 4800| 5550| 6000| 9600| 11100
   Min. volume  [cm3]| 350| 500| 600| 710| 1000| 1250| 1400| 2000| 2500

Note: Calculate them by linear interpolation in case of other piping lengths not shown on this table.

2. Diameter of header
   With a bigger size header, the refrigerant flow velocity decreases and this disturbs the sufficient circulation of refrigerant oil. As a result, the refrigerant oil does not flow properly and could cause a serious damage of compressor.
   Use the pipe whose outside diameter is less than the value shown in the table below.Model capacity of outdoor unit| ZRP| 35| 50| 60| 71| 100| 125| 140| 200| 250
   ---|---|---|---|---|---|---|---|---|---|---
   P| –| –| –| –| –| –| –| 200| 250
   SHW| –| –| –| 80| 112| 140| –| 230| –
   Max. diameter of header [mm]| | {19| {28
   Model capacity of outdoor unit| ZM| 35| 50| 60| 71| 100| 125| 140
   ---|---|---|---|---|---|---|---|---
   Max. diameter of header [mm]| {14| {

3. Withstanding pressure
   Design pressure of outdoor unit is 4.15 MPa. Following must be satisfied for burst pressure of connecting application. Burst pressure : More than 12.45 MPa (3 times more than design pressure)

4. Contamination maintenance

5. Wash the inside of heat exchanger to keep it clean. Be sure to rinse not to leave flux. Do not use chlorine detergent when washing.

6. Be sure that the amount of contamination per unit cubic content of heat transfer pipe is less than the following amount. Example) In case of ø9.52mm Residual water : 0.6 mg/m, Residual oil : 0.5 mg/m, Solid foreign object : 1.8 mg/m

Additional refrigerant charging amount
Regarding additional refrigerant charging amount of PUZ-ZM100, 125, 140 models, follow the table below. For other models, see the installation manual of each outdoor unit.

Model

| Permitted pipe length| Permitted vertical difference| Additional refrigerant charging amount|  Maximum amount ofrefrigerant
---|---|---|---|---
31 – 40m| 41 – 50m| 51 – 60m| 61 – 70m| 71 – 85m
ZM100 – 140| – 85m| – 30m| 0.5kg| 1.0kg| 1.5kg| 2.0kg| 2.8kg| 6.8kg

Thermistor position

• < Target temp. thermistor (Locally supplied) >
  
  Put thermistor where average supply or return air temperature for heat exchanger can be detected. Put thermistor where it does NOT pick up the temperature of heat exchanger.

• < Liquid refrigerant pipe thermistor (TH2) >
  Put thermistor where liquid refrigerant pipe temperature can be detected. Protect the thermistor with heat insulating materials not to be affected by the ambient temperature, etc. In case that the refrigerant is distributed by distributor, put thermistor before the distributor.

• < 2-Phase temp. thermistor (TH5) >
  Put thermistor where 2-Phase temperature can be detected on the indoor HEX pipe. It should be located in the middle of inlet and outlet ports. If there are some paths, locate it on the top of them. Protect the thermistor with heat insulating materials not to be affected by the ambient temperature, etc.

• < Target temp. thermistor (TH1) >
  
  Put thermistor where average supply or return air temperature for heat exchanger can be detected.
  Put thermistor where it does NOT pick up the temperature of heat exchanger.

• < HEX inlet temp. thermistor (TH11) >
  Put thermistor where average air temperature of heat exchanger inlet can be detected.
  Put thermistor where it does NOT pick up the temperature of heat exchanger.

Restriction on input signals to the interface unit
Follow the “Note” in section 3.1 and 3.2.

Indoor operation range
Follow the operation range shown in section 3.3.

Method to disable the compressor operation when using R32 refrigerant
If you need to disable the compressor operation as a measure to satisfy the fire safety (e.g. in the case of refrigerant leakage), take the following method.

• Input STEP 0 when the manual step mode is selected.
• Turn ON IN1 (Forced Comp. OFF) after changing the operation mode to cooling, when the auto step mode is selected.

References

• Mitsubishi Electric Klima Sistemleri
• MITSUBISHI ELECTRIC Global website
• SD Association | The SD Association

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