Hitachi RAS-8FSNM Installation & Maintenance Manual
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Hitachi RAS-8FSNM Installation & Maintenance Manual

Inverter-driven split system heat pump air conditioners
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See also: Instruction Manual
Installation
&
Maintenance
Manual
INVERTER-DRIVEN
SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
- DC INVERTER UTOPIA IVX -
Model:
Outdoor Unit;
RAS-8FSNM
RAS-10FSNM
RAS-12FSNM
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS HEAT-PUMP
AIR CONDITIONERS.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
(Q)
(Q)
(Q)
P00104Q

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Summary of Contents for Hitachi RAS-8FSNM

  • Page 1 & Maintenance Manual INVERTER-DRIVEN SPLIT SYSTEM HEAT PUMP AIR CONDITIONERS - DC INVERTER UTOPIA IVX - Model: Outdoor Unit; RAS-8FSNM RAS-10FSNM RAS-12FSNM IMPORTANT: READ AND UNDERSTAND THIS MANUAL BEFORE USING THIS HEAT-PUMP AIR CONDITIONERS. KEEP THIS MANUAL FOR FUTURE REFERENCE.

  • Page 2: Important Notice

    IMPORTANT NOTICE G HITACHI pursues a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary specifications without notice. G HITACHI cannot anticipate every possible circumstance that might involve a potential hazard. G This heat pump air conditioner is designed for standard air conditioning only. Do not use this heat pump air conditioner for other purposes such as drying clothes, refrigerating foods or for any other cooling or heating process.

  • Page 3: Safety Summary

    SAFETY SUMMARY G Use refrigerant R410A in the refrigerant cycle. Do not charge oxygen, acetylene or other flammable and poisonous gases into the refrigerant cycle when performing a leakage test or an air-tight test. These types of gases are extremely dangerous and can cause an explosion.
  • Page 4 SAFETY SUMMARY G Do not install the indoor unit, outdoor unit, remote control switch and cable within approximately 3 meters from strong electromagnetic wave radiators such as medical equipment. G Supply electrical power to the system to energize the oil heater for 12 hours before start-up after a long shutdown.

  • Page 5: Checking Product Received

    Therefore, the utilization of the unit other than those indicated in these instructions is not recommended. Please contact your local agent, as the occasion arises. Hitachi's liability shall not cover defects arising from the alteration performed by a customer without Hitachi's consent in a written form.

  • Page 6: Table Of Contents

    TABLE OF CONTENTS 1. Safety Summary ........................1 2. Structure ........................... 1 Outdoor Unit & Refrigerant Cycle ..................1 Necessary Tools and Instrument List for Installation ............3 3. Transportation and Handling ....................4 Transportation ......................... 4 Handling of Outdoor Unit ....................4 4.

  • Page 7: Safety Summary

    1. Safety Summary G Do not perform installation work, refrigerant Do not install the indoor unit, outdoor unit, piping work, drain piping and electrical remote control switch and cable within wiring connection without referring to the approximately 3 meters from strong installation manual.
  • Page 8 <Refrigerant Cycle> <Outdoor Unit> Ambient Thermistor Discharge Gas Thermistor Discharge Gas Thermistor Thermistor Compressor Heat Exchanger Sensor for Regrigerant Pressure Oil Separator Accumulator Strainer(3/8) Strainer(1/2) Strainer(3/4) Distributor Reversing Valve Capillary Tube Electronic Expansion Valve Check Valve Solenoid Valve Solenoid Valve Check Joint Stop Valve for Liquid Line Stop Valve for Gas Line...

  • Page 9: Necessary Tools And Instrument List For Installation

    Necessary Tools and Instrument List for Installation Tool Tool Tool Tool Handsaw Copper Pipe Bender Spanner Leveller Phillips Clamper for Solder- Manual Water Pump Charging Cylinder Screwdriver less Terminals Hoist Vacuum Pump Pipe Cutter Gauge Manifold (for Indoor Unit) Refrigerant Gas Brazing Kit Cutter for Wires Ammeter...

  • Page 10: Transportation And Handling

    Base base as shown. Fig. 3.1 Hanging Work for Transportation (kg) Model Unit Gross Weight RAS-8FSNM(Q) RAS-10FSNM(Q) RAS-12FSNM(Q) G Lift the outdoor unit in its factory packaging with 2 wire ropes. Fig. 3.2 Handling of Outdoor Unit G For safety reasons ensure that the outdoor unit is lifted smoothly and does not lean.

  • Page 11: Outdoor Unit Installation

    4. Outdoor Unit Installation Factory-Supplied Accessories • Do not install the outdoor unit in a space where a seasonal wind directly blows to the outdoor Check to ensure that the following accessories heat exchanger or a wind from a building space are packed with the outdoor unit.

  • Page 12: Service Space

    Service Space Install the outdoor unit with a sufficient space around the outdoor unit for operation and maintenance as shown below. (1) Obstacles on Inlet Side (a) Upper Side is Open. (mm) Single Installation Multiple Installation * Around sides * Around sides are open.
  • Page 13 (2) Obstacles on Discharge Side (a) Upper Side is Open. (mm) Single Installation Multiple Installation Min. Front Side Min. 700 Min.100 Min.50 Fit positions " " with unit front side. NOTE: NOTE: Mount the airflow guide and Mount the airflow guide and open both open right end or left end.

  • Page 14: Installation Work

    Installation Work (1) Secure the outdoor unit with the anchor (4) Multi-Row and Multiple Installations bolts. Air Flow Direction Base of Outdoor Unit Special Washer Anchor Bolt Concrete Filled Mortar Fig. 4.5 Installation Space (5) Fig. 4.6 Installation of Anchor Bolts Keep a distance of more than 15mm between other units and do not put obstacles on the right Fix the outdoor unit to the anchor bolts by...
  • Page 15 (4) Fix the outdoor unit firmly so that declining, making noise, and falling down by strong Incorrect wind or earthquake is avoided. Base Width of Outdoor Unit 100mm Fixing Plate (Field-Supplied) Both sides on the unit fixing Outdoor Unit can be possible. is Unstable.

  • Page 16: Refrigerant Piping Work

    Refrigerant Piping Work G Flaring Dimension Perform the flaring work as shown below. Use refrigerant R410A in the refrigerant cycle. (mm) Do not charge oxygen, acetylene or other Diameter -0.4 flammable and poisonous gases into the R410A refrigerant cycle when performing a leakage 6.35 test or an air-tight test.

  • Page 17: Refrigerant Piping Work

    Equivalent Length ≤ 125m Indoor Unit is higher than Outdoor Unit: ≤ 40m q12.7 RAS-12FSNM(Q) 25.4 (*1): The accessory pipe with flange is attached. (*2): Select the liquid piping size of q12.7 when the piping length is more than 70m. only for RAS-8FSNM(Q)

  • Page 19: Piping Connection

    FSNM(Q) FSNM(Q) FSNM(Q) 0.8 1.5 2.5 5.0 10.0 8FSNM(Q) 10FSNM(Q) 12FSNM(Q) Piping Connection Pipes can be connected from 4 directions. Hold down the cover slowly. Rear Side Rear Cover Piping Cover Rear Side Piping Work (Knock-Out Hole) Rear Side Piping Cover Right Side Piping Work Front Side (Knock-Out Hole)
  • Page 20 (1) Confirm that the valve is closed. Right Side Piping Hole (2) Prepare a field-supplied bend pipe for liquid line. Connect it to the liquid valve by flare nut through the square hole of bottom base. For Piping Connection When tightening the flare nut, use two spanners.

  • Page 21: Air Tight Test

    (c) Rear Piping Work (4) Stop Valve After removing rear piping cover, punch Operation of the stop valve should be out the “C” holes along the guide line. performed according to the below. <Gas Valve> Rear Cover NOTE: To avoid damage protect cables and pipes with adequate insulation (Field- Supplied).

  • Page 22: Vacuum Pumping

    (5) Connect the gauge mani-fold using (4) This system is not necessary to charge charging hoses with a nitrogen cylinder to refrigeration less than 30m of the actual the check joints of the liquid line and the piping length. If the total piping length is gas line stop valves.
  • Page 23 φ9.53x5m φ6.35x10m <Example> RAS-12FSNM(Q) <Table 1> No. 0 No. 2 Outdoor Unit Outdoor Unit φ9.53x5m Ref. Charge (kg) RAS-8FSNM(Q) No. 1 No. 3 RAS-10FSNM(Q) φ9.53x5m RAS-12FSNM(Q) NOTE: is outdoor unit ref. charge before shipment. φ12.7x10m φ9.53x5m φ6.35x10m See Example for Model RAS-12FSNM(Q), and fill in the following table.

  • Page 24: Caution Of The Pressure By Check Joint

    Caution of the Pressure by Check Joint When the pressure is measured, use the check joint of gas stop valve ((A) in the figure below) and use the check joint of liquid piping ((B) in the figure below). At that time, connect the pressure gauge according to the following table because of high pressure side and low pressure side changes by operation mode.

  • Page 25: Collecting Refrigerant

    Electrical Wiring Collecting Refrigerant When the refrigerant should be collected into the outdoor unit due to indoor/outdoor unit relocation, collect the refrigerant as follows. G Turn OFF the main power switch to the (1) Attach the manifold gauge to the gas stop indoor unit and the outdoor unit and wait for valve and the liquid stop valve.

  • Page 26: Electrical Wiring Connection

    6.2 Electrical Wiring Connection 6.2. For Outdoor Unit and the outdoor unit coincide correctly. If not, some component will be damaged. The electrical wiring connection for the outdoor unit is shown in Fig. 6. () Use shielded wires (>0.75mm ) for (1) Connect the power supply wires to L1, L2, intermediate wiring to protect electrically L3, and N (for 380-415V), to R, S and T (for...
  • Page 27 Outdoor Unit / Power Supply Line No. 0 System No. 1 System No. 3 System Outdoor Unit Outdoor Unit Outdoor Unit L1 L2 L3 N L1 L2 L3 N L1 L2 L3 N Operating Line (Shielded Twist Pair Cable) DC5V (Non-Pole Transmission H-LINK II System) Distribution Box or Pull Box Distribution Box or Pull Box FUSE...
  • Page 28 3) The wire sizes marked with *2 in the table of this page are selected at the maximum current of the unit according to the wire, MLFC (Flame Retardant Polyflex Wire) manufactured by Hitachi Cable Ltd., Japan. 4) Use a shielded cable for the transmitting circuit and connect it to ground.
  • Page 29 Power Source of Power Source Line Power Source Line Indoor Unit Remote Distribution Box Remote Distribution Box Remote Distribution Box Control Line or Pull Box Control Line or Pull Box Control Line or Pull Box (Field-Supplied) It is need for China and (Field-Supplied) It is need for China and (Field-Supplied)

  • Page 30: Test Run

    Test Run Test run should be performed according to the Table 7.2 on page 26. And use the Table 7.1 on page 25 for recording test run. G Do not operate the system until all the check points have been cleared. (A) Check to ensure that the electrical resistance is more than 1 megohm, by measuring the resistance between...
  • Page 31 Table 7.1 Test Run and Maintenance Record MODEL: SERIAL. No. COMPRESSOR MFG. No. CUSTOMER'S NAME AND ADDRESS: DATE: 1. Is the rotation direction of the indoor coil fan correct? 2. Is the rotation direction of the outdoor coil fan correct? 3.
  • Page 32 Table 7.2 Checking of Wire Connection by Test Run NOTE: "TEST RUN" shall be performed with each refrigerant cycle (each outdoor unit). (1) Turn ON the power source of the units. Setting Temperature (2) Procedure for "TEST RUN" mode of remote control switch. HIGH SET TEMP.
  • Page 33 Table 7.3 Alarm Code Code Category Content of Abnormality Leading Cause Indoor Unit Activation of Protection Device Activation of Float Switch, High Level in Drain Pan Activation of PSH, Pipe Clogging, Excessive Outdoor Unit Activation of Protection Device Refrigerant, Inert Gas Mixing Abnormality between Indoor and Incorrect Wiring, Loose Terminals, Disconnect Wire, Transmission...

  • Page 34: Safety And Control Device Setting

    The other way, when the temperature becomes lower, limitation is cancelled. Model RAS-8FSNM(Q) RAS-10FSNM(Q) RAS-12FSNM(Q) For Compressor Pressure Switch Automatic Reset, Non-Adjustable High Cut-Out -0.05...
  • Page 35 P00104Q 2013.12...

This manual is also suitable for:

Ras-10fsnmRas-12fsnmRas-8fsnmqRas-10fsnmqRas-12fsnmq

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