Кондиционер mitsubishi srk20hg инструкция по применению

• Page 1
  Manual No. ’07 . SRK-T . 064 TECHNICAL MANUAL Collection data WALL MOUNTED TYPE ROOM AIR-CONDITIONER (Split system, air to air heat pump type) SRK20HG SRK28HG SRK40HG…

• Page 2: Table Of Contents

  CONTENTS 1. GENERAL INFORMATION …………….1 Specific features ………………1 How to read the model name …………..1 2. SELECTION DATA………………. 2 Specifications ………………. 2 Range of usage & limitations …………..5 Exterior dimensions …………….. 5 Piping system ………………. 7 Selection chart ………………

• Page 3: General Information

  1.1 Specific features The “MITSUBISHI HEAVY INDUSTRIES, LTD.” room air-conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling or heating equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor.

• Page 4: Selection Data

  SELECTION DATA 2.1 Specifications Model SRK20HG (Indoor unit) SRC20HG (Outdoor unit) (220/230/240V) Model SRK20HG SRC20HG Item Cooling capacity 2070 Heating capacity 2360 Power source 1 Phase, 220/230/240V, 50Hz Cooling input 0.655 Running current (Cooling) 2.9/3.1/3.3 Heating input 0.64 Running current (Heating) 2.9/3.1/3.3…

• Page 5
  Model SRK28HG (Indoor unit) SRC28HG (Outdoor unit) (220/230/240V) Model SRK28HG SRC28HG Item Cooling capacity 2530 Heating capacity 2670 Power source 1 Phase, 220/230/240V, 50Hz Cooling input 0.77 Running current (Cooling) 3.6/3.4/3.2 Heating input 0.685 Running current (Heating) 3.2/3.0/2.8 Inrush current 16.4 Cooling: 3.29 Heating: 3.90 Sound level…
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  Model SRK40HG (Indoor unit) SRC40HG (Outdoor unit) (220/230/240V) Model SRK40HG SRC40HG Item Cooling capacity 3500 Heating capacity 3700 Power source 1 Phase, 220/230/240V, 50Hz Cooling input 1.09 Running current (Cooling) 5.0/4.8/4.6 Heating input 1.09 Running current (Heating) 5.0/4.8/4.6 Inrush current 27.0 Cooling: 3.21 Heating: 3.39 Sound level…

• Page 7: Range Of Usage & Limitations

  2.2 Range of usage & limitations Models All models Item Indoor return air temperature Cooling operation : Approximately 21 to 32˚C Heating operation : Approximately 15 to 30˚C (Upper, lower limits) Outdoor air temperature Cooling operation : Approximately 21 to 43˚C (Upper, lower limits) Heating operation : Approximately — 5 to 21˚C Refrigerant line (one way) length…

• Page 8
  (2) Outdoor unit Models All models Drain holes (ø20) 313.1 349.5 439.1 104.9 165.1 18.9 61.9 2-16×12 Terminal block Service valve (Liquid) Flare connection ø6.35 (1/4») 138.4 33.5 Service valve (Gas) Flare connection 20, 28: ø9.52 (3/8») ø12.7 (1/2»)

• Page 9: Piping System

  2.4 Piping system Models SRK20HG, 28HG Indoor unit Outdoor unit Cooling cycle Heating cycle Outdoor air Flare connecting Service valve temp. sensor (Gas) Piping Check joint (Gas) ø9.52 4 way valve Accumulator Muffler Room temp. Discharge temp. Heat sensor Heat…

• Page 10: Selection Chart

  0.92 1.00 How to obtain the cooling and heating capacity Example : The net cooling capacity of the model SRK20HG with the piping length of 15m, indoor wet-bulb temperature at 19.0˚C ✕ ✕ and outdoor dry-bulb temperature 35˚C is Net cooling capacity = 2070 0.975…

• Page 13: Outline Of Operation Control By Microcomputer

  OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 4.1 Operation control function by remote control switch Remote control Models All models ◆ Operation selection FAN SPEED button OPERATION MODE select button Each time the button is pushed, the Each time the button pushed, the indicator is switched over in turn.

• Page 14: Unit On/Off Button

  Unit indication selection Models All models RUN light (green) Illuminates during operation and CLEAN operation. TIMER light (yellow) Illuminates during TIMER operation. TIME HI POWE ECONO ON / OFF HI POWER light (green) Illuminates during HIGH POWER operation. ECONO light (orange) Illuminates during ECONOMY operation.

• Page 15: Custom Cord Switching Procedure

  4.4 Custom cord switching procedure If two wireless remote controls are installed in one room, in order to prevent wrong operation Jumper wire (J6) due to mixed signals, please modify the printed circuit board in the indoor unit’s control box and the remote control using the following procedure.

• Page 16: Timer Operation

  4.6 Timer operation (1) Comfortable timer setting (ON timer) If the timer is set at ON when the operation select switch is set at the cooling or heating, or the cooling or heating in auto mode operation is selected, the comfortable timer starts and determines the starting time of next operation based on the initial value of 15 minutes and the relationship between the room temperature at the setting time (temperature of room temperature sensor) and the setting temperature.

• Page 17: Outline Of Heating Operation

  This function controls the indoor unit fan speed as shown below in accordance with the temperature sensed by the indoor heat exchanger sensor. (a) When the compressor and outdoor unit fan are operating Speed 9 Speed 7 Auto fan control, or the set fan speed Speed 5 Speed 3 <SRK20HG> <SRK28HG> <SRK40HG> Indoor heat exchanger temp. (˚C)

• Page 18
  Speed 3 goes OFF, the indoor unit’s fan speed changes forcibly from OFF to speed 1. <SRK20HG> <SRK28HG> <SRK40HG> Indoor heat exchanger temp. (˚C) To accomplish rapid recovery from the thermostat off state, after the compressor and outdoor unit’s fan go OFF, the set temperature is raised by 1ºC until 1 minute passes after the hot keep end temperature has been reached following restarting.
• Page 19
  (c) Operation of functinal components during defrosting operation Compressor command Hot keep Controlled by the indoor heat Hot keep exchanger temperature Indoor unit fan The chart at left is for reference. Hot keep control governs operation RUN light during heating. Flashes Outdoor unit fan 110 sec.

• Page 20: Outline Of Cooling Operation

  4.8 Outline of cooling operation (1) Operation of major functional components Item When the compressor When the compressor When the compressor goes Functional command is OFF command is ON OFF due to an anomalous stop. components Indoor fan motor Flaps ON or OFF ON or OFF Stop position control…

• Page 21: Outline Of Dehumidifying Operation

  4.9 Outline of dehumidifying operation (1) Choose the appropriate operation block area by the difference between room temperature and thermostat setting temperature as shown below. ¡ Operation block area D block C block B block A block –2 Room temp. – Setting temp.(deg) (2) Start up operation C.D block A.B block…

• Page 22: Outline Of Automatic Operation

  4.10 Outline of automatic operation (1) Determination of operation mode The unit checks the room temperature and the outdoor air temperature after operating the indoor and outdoor blowers for 20 seconds, determines the operation mode and the room temperature setting correction value, and then begins in the automatic operation.

• Page 23: Protective Control Function

  ¡ When the indoor heat exchanger ¡ When the indoor heat exchanger temperature is > = 58˚C temperature is > = 62˚C Outdoor fan Compressor <SRK20HG> <SRK28HG> Indoor heat exchanger temp. (˚C) <SRK40HG> Indoor heat exchanger temp. (˚C) (5) Compressor overheat protection If the discharge pipe temperature (sensed by Th6) exceeds the set temperature value, the compressor stops.

• Page 24
  (6) Serial signal transmission error protection (a) Purpose: Prevents malfunction resulting from error on the indoor ↔ outdoor signals. (b) Detail of operation: When the indoor unit controller ↔ outdoor unit controller signals cannot be received, the compressor is stopped immediately. Simultaneously, the red LED on the printed circuit board of outdoor unit controller flashing 6 times for 0.5 second at intervals of 8 seconds.

• Page 25: Application Data

  APPLICATION DATA SAFETY PRECAUTIONS ¡ Please read these “Safety Precautions” first then accurately execute the installation work. ¡ Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section.

• Page 26: Selection Of Location For Installation

  5.1 Selection of location for installation (1) Indoor unit Where there is no obstructions to the air flow and where the cooled air can be evenly distributed. (b) A solid place where the unit or the wall will not vibrate. Right A place where there will be enough space for servicing.

• Page 27: Installation Of Indoor Unit

  5.2 Installation of indoor unit (1) Installation of installation board (a) Fixing of installation board Look for the inside wall structures (Intersediate support or INSTALLATION SPACE (INDOOR UNIT) (FRONT VIEW) pillar and firaly install the unit after level surface has been checked.) Unit : mm Space for…

• Page 28
  (3) Preparation of indoor unit (a) Mounting of connecting wires 1) Remove the lid(R). 2) Remove the wiring clamp. 3) Connect the connecting wire securely to the terminal block. Terminal block Use cables for interconnection wiring to avoid loosening of the wires.
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  [Drain hose changing procedures] 1. Remove the drain hose. 2. Remove the drain cap. 3. Insert the drain cap. 4. Connect the drain hose. ¡Remove the drain hose, ¡Remove it with hand or ¡Insert the drain cap which was removed at ¡I n s e r t t h e d r a i n h o s e making it rotate.

• Page 30: Installation Of Outdoor Unit

  5.3 Installation of outdoor unit (1) Installation of outdoor unit Make sure that the unit is stable in installation. Fix the unit to stable base. When installing the unit at a higher place or where it could be toppled by strong winds, secure the unit firmly with foundation bolts, wire, etc.

• Page 31
  (3) Air purge Tighten all flare nuts in the pipings both indoor and outside will so as not to cause leak. Connect service valve, charge hose, manifold valve and vacuum pump as is illustrated below. Open manifold valve handle Lo to its full width, and perform vacuum or evacuation. Continue the vacuum or evacuation operation for 15 minutes or more and check to see that the vacuum gauge reads –…

• Page 32: Test Run

  (3) Explain to the customer on the correct usage of the air conditioner in simple layman’s terms. (4) Make sure that drain flows properly. (5) Standard operation data (220/230/240V) Model SRK20HG SRK28HG SRK40HG Item – –…

• Page 33: Maintenance Data

  MAINTENANCE DATA 6.1 Trouble shooting (1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models] All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it is necessary to understand the function controlled by a microcomputer thoroughly, so as not to mistakenly identify correct operations as mis-operations.

• Page 34
  (2) Self diagnosis display on indoor unit RUN light Outdoor unit LED Trouble Cause ¡ Broken heat exchanger sensor wire, connector Heat exchanger sensor error 1 time flash poor connection ¡ Broken room temperature sensor wire, connector TIMER light Room temperature sensor error 2 time flash poor connection ¡…

• Page 35: Over Heat Of Compressor

  [Compressor faulty, compressor Trouble of outdoor unit wiring disconnected.] Short circuit, Check if the heat Overload operation? exchanger is dirty, stopped up, etc. Is the refrigerant level proper? Adjust the level to the proper level. Is the wiring to the compressor Connect it securely.

• Page 36
  [Wiring error including power cable, defective indoor/ Error of signal transmission outdoor unit PCB] Does error persist after power Trouble by transient cause, not unit trouble. reset? Correct improper wire connection on indoor/ Is there any wrong connection on outdoor unit. indoor/outdoor unit wiring? Is DC 0~Approx.
• Page 37
  (5) Inspection procedures of indoor electrical equipment Is fuse (3.15A) blown? Replace fuse. Is voltage applied between terminals 1~2 on terminal Replace PCB. block? (AC 220/230/240V) Is DC 0~12V detected between terminals 2~3 on terminal Replace PCB. block? Indoor electrical equipment are normal.

• Page 38: Servicing

  6.2 Servicing (1) Evacuation The evacuation is an procedure to purge impurities..noncondensable gas, air, moisture from the refrigerant equipment by using a vacuum pump. Since the refrigerant R22 is very insoluble in water, even a small amount of moisture left in the refrigerant equipment will freeze, causing what is called water clogging.

• Page 39
  WALL MOUNTED TYPE ROOM AIR-CONDITIONER Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax : (03) 6716-5926 No.073(1A) RO…

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