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INTERFACE
AIR-HANDLING UNIT (AHU) DESIGN GUIDELINE
[Model Name]
PAC-IF013B-E
PAC-SIF013B-E
Related document:
Refer to the following manual
• PAC-IF013B-E/PAC-SIF013B-E
INSTALLATION MANUAL
• PAC-IF013B-E/PAC-SIF013B-E
Modbus manual
CONTENTS
1. Introduction and Notice ............................ 2
Outdoor Unit Models ............................... 2
3. System ........................................................ 3
4. Function - System list ............................... 6
5. Input and Output ..................................... 10
R32 Refrigerant ....................................... 15
September 2018

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   Summary of Contents for Mitsubishi Electric PAC-IF013B-E

  • Page 1: Table Of Contents

    INTERFACE AIR-HANDLING UNIT (AHU) DESIGN GUIDELINE September 2018 Related document: [Model Name] Refer to the following manual PAC-IF013B-E • PAC-IF013B-E/PAC-SIF013B-E INSTALLATION MANUAL • PAC-IF013B-E/PAC-SIF013B-E PAC-SIF013B-E Modbus manual CONTENTS 1. Introduction and Notice ......2 2. Basic Specifications and Connectable Outdoor Unit Models ....... 2 3.
  • Page 2: Introduction And Notice

    PAC-IF013B-E/PAC-SIF013B-E installation manual, the Modbus manual, and the outdoor unit installation manual for correct use. • This interface is to connect Mr. SLIM inverter outdoor unit of MITSUBISHI ELECTRIC to local applications. Please check the following guidelines when designing the local system.
  • Page 3: System

    System Step mode (Input) Target temperature Number of outdoor unit Intelligent multiple outdoor unit control System Manual Not available See (1-1) below. ─ See (2-1) below. Not use See (1-1) below. Auto Supply air temp. control Not available See (1-2) below. Return air temp.
  • Page 4 System (1-2) Auto step mode & 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 tem- perature. • Set temperature can be set by remote controller, DIP switch, Exhaust Air Return Air or Modbus signal.
  • Page 5 System 3.2 System configuration (Intelligent multiple outdoor unit control *1 ) *1. Interface system receives step request signal correspond to total capacity of outdoor units, and calculates necessary (2-1) Manual step mode (example) capacity for each outdoor unit automatically. Note •...
  • Page 6: Function - System List

    Function - System list...
  • Page 7 Function - System list...
  • Page 8 Function - System list...
  • Page 9 Function - System list *1. Example of system configuration System A AHU local Outdoor unit Interface controller Remote controller System B AHU local Outdoor unit Interface controller System C (Manual step mode) (IMOUC) AHU local Ref.address: 0 Outdoor unit Interface controller Ref.address: 1 Outdoor unit...
  • Page 10: Input And Output

    Input and Output 5.1. Input and output Inputs Availability Outputs Availability Thermistor Ref. liquid temperature (TH2) Output Operation ON/OFF 2-phase temperature (TH5) Error (Refrigerant) (Contact signal) Compressor ON/OFF Thermistor Coil on temperature (TH11) Defrost Target air temperature (TH1) (Air) Cooling mode (Supply air or Return/Room air) Heating mode Input...
  • Page 11 Input and Output 5.2.2 Requirements and guides regarding defrost and pre-defrost signal (1) Do NOT input STEP 0 during defrost operation and while pre-defrost signal is ON. (2) After pre-defrost signal becomes ON, do NOT change capacity step request until defrost operation finishes. If you change capacity step after pre-defrost signal is ON, outdoor unit may stop starting defrosting and frost may become big.
  • Page 12 Input and Output 5.3. Requirements and guides when intelligent multiple outdoor unit control (IMOUC) is used 5.3.1 Power input timing when intelligent multiple outdoor unit control (IMOUC) is used When IMOUC is used, supply power to the first interface unit, then the second interface unit within 1 minute. Otherwise system error will occur. (See figure 5-3.) AHU local AHU local Interface...
  • Page 13: Requirement On Local Ahu Design

    Requirement on local AHU design 6.1 Air flow volume Standard air flow volume Model capacity of outdoor unit – – – – – – – – – – – – – – Maximum air volume [m³/min] 12.3 33.6 67.2 [m³/h] 1080 1260 1440...
  • Page 14 Requirement on local AHU design 6.3 Requirement on DX (Direct expansion) coil (1) Heat exchanger volume of DX coil Make sure to keep the DX coil capacity within the following range. If the piping length is 30m or shorter, DX coil capacity can be increased as follows. Model capacity of outdoor unit –...
  • Page 15: Additional Requirements For Using R32 Refrigerant

    Requirement on local AHU design 6.5 Thermistor position < Target temp. thermistor (Locally supplied) > Put thermistor where average supply or return air temperature can be detected. Put thermistor where it does NOT pick up the temperature of DX coil. Distributor <...
  • Page 16 This product is designed and intended for use in the residential, commercial and light-industrial environment. HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN RG79F087H03...

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Pac-sif013b-e

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