Hitachi 4FSVN1Q Instruction Manual

4FSVN1Q
5FSVN1Q
6FSVN1Q
5FSYN1Q
6FSYN1Q
Model
Outdoor Unit
ORIGINAL INSTRUCTIONS
P00692Q
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
- SET FREE -mini(R410A) -

I
if operate cool and heat mode at the same time,air conditioner system will be fluctuated for large difference in
temperature for changing operate mode.
This air conditioners only is appliable of cooling or heating mode,do not operate cool and heat mode together,
NOTE:
Install this air conditioners by local regulations or standards.
23WB
46 DB
30 DB
15.5 WB
15WB
-5 DB
15 DB
-20 WB

SAFETY SUMMARY
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. It is recommended that compressed air, nitrogen or
refrigerant be used for these types of tests.
Do not pour water into the indoor or outdoor unit. These products are equipped with
electrical parts. If poured, it will cause a serious electrical shock.
Do not touch or adjust safety devices inside the indoor or outdoor units. If these
devices are touched or readjusted, it may cause a serious accident.
Do not open the service cover or access panel for the indoor or outdoor units without
turning OFF the main power supply.
Refrigerant leakage can cause difficulty with breathing due to insufficient air. Turn OFF
the main switch, extinguish any naked flames and contact your service contractor, if
refrigerant leakage occurs.
The installer and system specialist shall secure safety against refrigerant leakage
according to local regulations or standards.
Use an ELB (Electric Leakage Breaker). In the event of a fault, there is danger of an
electric shock or a fire if it is not used.
Do not install the outdoor unit where there is a high level of oil mist, flammable gases,
salty air or harmful gases such as sulphur.
Do not use any sprays such as insecticide, lacquer, hair spray or other flammable
gases within approximately one (1) meter from the system.
If circuit breaker or fuse is often activated, stop the system and contact your service
contractor.
Do not perform installation work, refrigerant piping work, drain piping and electrical
wiring connection without referring to our installation manual. If the instructions are
not followed, it may result in a water leakage, electric shock or a fire.
Check that the ground wire is securely connected. If the unit is not correctly grounded,
it lead electric shock. Do not connect the ground wiring to gas piping, water piping,
lightning conductor or ground wiring for telephone.
Connect a fuse of specified capacity.
Do not put any foreign material on the unit or inside the unit.
Make sure that the outdoor unit is not covered with snow or ice, before operation.
Before performing any brazing work, check to ensure that there is no flammable
material around.
When using refrigerant be sure to wear leather gloves to prevent cold injuries.
Protect the wires, electrical parts, etc. from rats or other small animals.
If not protected, rats may gnaw at unprotected parts and which may lead to a fire.
Fix the cables securely. External forces on the terminals could lead to a fire.
II

Hitachi s consent in a written form.
Hitachi s liability shall not cover defects arising from the alteration performed by a customer without
III
Therefore, the utilization of the unit other than those indicated in these instructions is not
recommended.
SAFETY SUMMARY
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.
Supply electrical power to the system to energize the oil heater for 12 hours before
start-up after a long shutdown.
Do not step or put any material on the product.
Provide a strong and correct foundation so that;
a. The outdoor unit is not on an incline.
b. Abnormal sound does not occur.
c. The outdoor unit will not fall down due to a strong wind or earthquake.
NOTE:
It is recommended that the room be ventilated every 3 to 4 hours.
The heating capacity of the heat pump unit is decreased according to the outdoor air
temperature. Therefore, it is recommended that auxiliary heating equipment be used in
the field when the unit is installed in a low temperature region.
Please contact your local agent, as the occasion arises.
The standard utilization of the unit shall be explained in these instructions.
accessories to determine if they are correct.
Check the model number, electrical characteristics (power supply, voltage and frequency) and
CHECKING PRODUCT RECEIVED
Upon receiving this product, inspect it for any shipping damage.
Claims for damage, either apparent or concealed, should be filed immediately with the shipping
company.





This product shall not be mixed with general household waste at the end of its life and it
shall be retired according to the appropriated local or national regulations in an environmentally
correct way. Due to refrigerant, oil and other components contained in the Air Conditioner,
its dismantling must be done by a professional installer accordingly to the applicable
regulations.
ATTENTION :
Contact the Hitachi Customer Care for more information.
!
''

5.6 Vacuum Pumping and Charging Refrigerant....................................................................
6.2 Electrical Wiring Connection ...........................................................................................
9
5.2 Refrigerant Piping Work ...................................................................................................
4.3 Service Space .................................................................................................................6
4.4 Installation Work ..............................................................................................................6
4.2 Initial Check .....................................................................................................................5
8. Test Run....................................................................................................................................
7. Outdoor Unit Dip-Switch Setting................................................................................................
3.2 Transportation ..................................................................................................................4
1. Safety Summary.......................................................................................................................
1
2.1 Outdoor Unit & Refrigerant Cycle .....................................................................................
28
9. Safety and Control Device Setting............................................................................................
24
23
20
6.1 General Check ................................................................................................................
6. Electrical Wiring .........................................................................................................................
19
5.9 Collecting Refrigerant .......................................................................................................
18
5.8 Additional Refrigerant Charge.....................................................................
17
5.7 Caution of the Pressure by Check Joint ...........................................................................
15
14
5.5 Air Tight Test.....................................................................................................................
13
5.4 Piping Connection ...........................................................................................................
12
5.3 Multi-Kit................................................................................................................
5. Refrigerant Piping Work ........................................................................................................... 7
5
4.1 Factory-Supplied Accessories .........................................................................................
..........5
2. Structure...................................................................................................................................1
3. Transportation and Handling ................................................................................................
3.1 Combination of Indoor and Outdoor Unit .....................................................................................
....4
7
5.1 Piping Materials ................................................................................................................
4
2.2 Necessary Tools and Instrument List for Installation ........................................................3
IV
TABLE OF CONTENTS
4. Outdoor Unit Installation..................................................................................................
19
19
1

Electrical Box
Reversing Valve
Check Valve
2. Structure
1. Safety Summary
Accumulator
Compressor
Heat Exchanger
Air Outlet
Air Inlet
Vibration Absorbing Rubber
Crankcase Heater
Pressure Sensor
High Pressure Switch
Bypass Solenoid Valve
Stop Valve for Gas Line
Stop Valve for Liquid Line
Electrical Expansion Valve
Strainer
Distributor
Check Joint for High/Low Pressure(Cool/Heat)
Oil Return Cpillary Tube
Strainer
Oil Return Solenoid Valve
Oil Seperator
Fan Motor
Propeller Fan
Strainer
..

Check Joint
Pressure Sensor
Pressure Switch
Solenoid Valve
Distributor
Capilary Tube
Reversing Valve
Heat Exchanger
Compressor
Refrigerant Flow Direction(Heating Operation)
Outdoor Unit
Bypass
Flare Connection
Field Refrigerant Piping
Refrigerant Flow Direction(Cooling Operation)
Discharge Gas Thermistor
Gas Line Refrigerant
Heat Exchanger Thermistor
Ambient Thermistor
Liquid Line Refrigerant
Piping Connection
Piping Connection
NO. Material
NO.
Strainer
Oil Seperator
Strainer
Strainer
Electrical Expansion Valve
Stop Valve for Gas Line
Stop Valve for Liquid Line
Bypass
Return Oil
Bypass&Return Oil
High Pressure Protect
High Pressure
Low Pressure
Remark
Accumulator
Compressor
Heat Exchanger
Capilary Tube
Capilary Tube
Reversing Valve
Distributor
Solenoid Valve
Pressure Switch
Pressure Sensor
Pressure Sensor
Check Joint
Check Valve

2.2 Necessary Tools and Instrument List for Installation

Use tools and measuring instruments only for the new refrigerant which is directly touch to refrigerant.
No. Tool No. Tool No. Tool No. Tool
1 Handsaw 6 Copper Pipe Bender 11 Spanner 16 Leveller
2
Screwdriver 7Manual Water Pump 12 Charging Cylinder 17 Clamper for Solder-
less Terminals
3 Vacuum Pump 8 Pipe Cutter 13 Gauge Manifold 18 Hoist
(for Indoor Unit)
4Refrigerant Gas
Hose 9 Brazing Kit 14 Cutter for Wires 19 Ammeter
5 Megohmmeter 10 Hexagon Wrench 15 Gas Leak Detector 20 Voltage Meter
: Interchangeability is available with current R22 : only for Refrigerant R410A (No Interchangeability with R22)
: Prohibited : only for Refrigerant R407C (No Interchangeability with R22)
R410A R407C
Pipe Cutter
Chamfering Reamer  -
Cutting Pipe
Removing Burrs
Flaring Tool  * The flaring tools for R407C are applicable to R22. Flaring for Tubes
* If using flaring tube, make dimension of tube
larger for R410A.
* In case of material 1/2H, flaring is not available.
Pipe Bender 
* In case of material 1/2H, bending is not available.
Use elbow for bend and braze.
Bending
Expanding Tool 
* In case of material 1/2H, expanding of tube is not
available. Use socket for connecting tube.
Expanding Tubes
*For
q
12.7
,
q
15.88
,
s
p
anner size is u
p
2mm.

*For q6.35, q9.53, q19.05, spanner size is
the same.
Brazing Tool * Perform correct brazing work. Brazing for Tubes
Nitrogen Gas 
* Strict Control against Contamin
(Blow nitrogen during brazing.)
Prevention from
Oxidation during
Brazing
Lubrication Oil
(for Flare Surface)
* Use a synthetic oil which is equivalent to the oil
used in the refrigeration cycle.
Applying Oil to the
Flared Surface
* Synthetic oil absorbs moisture quickly.
* Check refrigerant cylinder color. Refrigerant Charging
Liquid refrigerant charging is required regarding
zeotoropic refrigerant.
Vacuum Pump 

Vacuum Pumping
Adapter for
Vacuum Pump 
Manifold Valve 
* No interchangeability is available due to higher
pressures when compared with R22.
Charging Hose 
Do not use current ones to the different refrigerant.
If used, mineral oil will flow into the cycle and cause
sludges, resulting in clogging or compressor failure.
Connection diameter is different; R410A: UNF1/2,
R407C: UNF7/16.
Charging Cylinder * Use the weight scale. -
Weight Scale  -
Measuring
Instrument for
Refrigerant Charging
Refrigerant Gas
Leakage Detector 
* The current gas leakage detector (R22) is not
applicable due to different detecting method.
Gas Leakage Check
: Interchangeability with R407C.
Vacuum Pumping,
Vacuum Holding,
Refrigerant Charging
and Check of
Pressures


Measuring Instrument and Tool
Interchangeability
with R22 Reason of Non-Interchangeability and Attention
(: Strictly Required)
Torque Wrench
Vacuum
Drying
.
Refrigerant
Charge
Refrigerant
Cylinder
The current ones are applicable. However, it is
required to mount a vacuum pump adapter which
can prevent from reverse flow when a vacuum
pump stops, resulting in no reverse oil flow.
Use
Refrigerant
Pipe
Extrusion
Adjustment Gauge -
Connection of
Flare Nut
Dimensional Control
for Extruded Portion
of Tube after Flaring


3

3. Transportation and Handling
3.1 Combination of Indoor Unit and Outdoor Unit
3.2 Transportation
Max. Matching
Table 3.2 System Matching
Table 3.1 Indoor Unit Model
Below is indoor Unit combined with SET-FREE mini
FSVN1(Q)&FSYN1(Q)
Net Weight
Outdoor Unit Model
Fig.3.2 Transportation for no wooden base
If have no package to move,please protect with cloth
to
to
Min. Single
Operate Capacity
Quantity
Matching
Capacity
Min.Matching
Outdoor Unit Model
Available
Indoor Unit total Capacity must be 50% to 130% for
Outdoor Unit Nominal Capacity
Indoor unit
Capacity
to
to
to
Transport the product as close to the installation
location as practical before unpacking.
Do not put any material on the product.
Apply two lifting wires onto the outdoor unit,
when lifting it by crane.
Lifting Method
When lifting the unit, ensure a balance of
the unit, check safety and lift up smoothly.
(1) Do not remove any packing materials.
(2) Lift the unit under packing condition with
two (2) ropes, as shown in Fig. 3.1.
Fig. 3.1 Lifing Work for Transportation
Put Cloth or Paper
or paper
Do not put any foreign material into the
outdoor unit and check to ensure that none
exists in the outdoor unit before the
installation and test run. Otherwise, a fire or
failure, etc. may occur.
Nominal Capacity (HP)
1.0 1.3 1.5 1.8 2.0 2.3 2.5 3.0 4.0 5.0 6.0
In-the-Ceiling
4-Way Cassette
2-Way Cassette
Wall
Floor
Floor Concealed
Ceiling
Indoor Unit Type
HP HP HP
In-the-Ceiling
Low-height Type
Type
2.0 1.0
1.0
1.0
1.0
1.0
2.5
3.0
2.5
3.0
5.2
6.5
7.2
6.5
7.2
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q