Hitachi 3HRNM1Q Instruction Manual

4HRNM1Q
5HRNM1Q
3HRNM1Q
P 0 0 6 9 1 Q
5HYNM1Q
ORIGINAL INSTRUCTIONS
Model
Outdoor Unit
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
- IVX -mini(R410A) -

23WB
43 DB
30 DB
17 WB
15WB
-5 DB
15 DB
-20 WB

SAFETY SUMMARY
GUse 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.
GDo 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.
GDo 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.
GDo not open the service cover or access panel for the indoor or outdoor units without
turning OFF the main power supply.
GRefrigerant 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.
GThe installer and system specialist shall secure safety against refrigerant leakage
according to local regulations or standards.
GUse 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.
GDo not install the outdoor unit where there is a high level of oil mist, flammable gases,
salty air or harmful gases such as sulphur.
GDo not use any sprays such as insecticide, lacquer, hair spray or other flammable
gases within approximately one (1) meter from the system.
GIf circuit breaker or fuse is often activated, stop the system and contact your service
contractor.
GDo 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.
GCheck 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.
GConnect a fuse of specified capacity.
GDo not put any foreign material on the unit or inside the unit.
GMake sure that the outdoor unit is not covered with snow or ice, before operation.
GBefore 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.
GProtect 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.
GFix the cables securely. External forces on the terminals could lead to a fire.

SAFETY SUMMARY
GDo 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.
GSupply electrical power to the system to energize the oil heater for 12 hours before
start-up after a long shutdown.
GDo not step or put any material on the product.
GProvide 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:
GIt is recommended that the room be ventilated every 3 to 4 hours.
GThe 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.
Children should be supervised they do not play with the appliance.
their safety.
supervision or instruction concerning use of the appliance by a person responsible for
or mental capabilities,or lack of experience and knowledge,unless they have been given
The appliance is not to be used by children or person with reduced physical, sensory
G
G
Regarding installation altitude below 1000 meters;
℃
Regarding frequency of supply power within Hz of rated frequency.
±１％
Regarding transport storage temperature within -25 55 .
Operate the heat pump air conditioner within this range.
G
～

CHECKING PRODUCT RECEIVED
GUpon receiving this product, inspect it for any shipping damage.
Claims for damage, either apparent or concealed, should be filed immediately with the shipping
company.
GCheck the model number, electrical characteristics (power supply, voltage and frequency) and
accessories to determine if they are correct.
The standard utilization of the unit shall be explained in these instructions.
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.
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.
!

TABLE OF CONTENTS
1. Safety Summary....................................................................................................................... 1
2. Structure................................................................................................................................... 1
2.1 Outdoor Unit & Refrigerant Cycle .................................................................................... 1
2.2 Necessary Tools and Instrument List for Installation ....................................................... 4
3. Transportation and Handling .................................................................................................... 5
3.1 Transportation ................................................................................................................. 5
3.2 Handling of Outdoor Unit ................................................................................................. 5
4. Outdoor Unit Installation........................................................................................................... 6
4.1 Factory-Supplied Accessories ......................................................................................... 6
4.2 Initial Check ..................................................................................................................... 6
4.3 Service Space ................................................................................................................. 7
4.4 Installation Work .............................................................................................................. 8
5. Refrigerant Piping Work ...................................................................................................... .. 10
5.1 Piping Materials ............................................................................................................
5.2 Refrigerant Piping Work ................................................................................................ 11
5.3 Piping Connection ......................................................................................................... 12
5.4 Air Tight Test.................................................................................................................. 13
5.5 Vacuum Pumping .......................................................................................................... 14
5.6 Caution of the Pressure by Check Joint ........................................................................ 16
5.7 Collecting Refrigerant .................................................................................................... 17
6. Electrical Wiring ...................................................................................................................... 17
6.1 General Check .............................................................................................................. 17
6.2 Electrical Wiring Connection ......................................................................................... 18
7. Test Run ................................................................................................................................. 22
8. Safety and Control Device Setting.......................................................................................... 27
. 10

RAS-3HRNM1Q
1. Safety Summary
2. Structure
Electronic
Four-way

2
RAS-4~5HRNM1Q and RAS-5HYNM1Q
Reversing Valve
Micro-Computer Control Expansion Valve
Accumulator
Electrical Box
Oil Separator
Check Joint for High/Low Pressure
(Cool/Heat)
High Pressure Switch for Protection
Strainer
Solenoid Valve(SVF)
Solenoid Valve(SVA)
Pressure Sensor of High Pressure
Pressure Sensor of Low Pressure

RAS-3HRNM1Q
RAS-4~5HRNM1Q and RAS-5HYNM1Q
Accumulator
63H1
63H2
Gas Line Refrigerant
(φ15.88)
(φ9.53)
Piping Connection
Liquid Line Refrigerant
Piping Connection
Flare Connection
Field Refrigerant Piping
Refrigerant Flow Direction (Heating Operation)
Refrigerant Flow Direction (Cooling Operation)
Four-Way Valve
Check Valve
Stop Valve for Gas Line
Stop Valve for Liquid Line
High Pressure Switch for Protection
SVA Capilary Tube
Distributor
Strainer
Electronic Expansion Valve
Heat Exchanger
Compressor
Part Name
Mark
Check Joint
Solenoid Valve
Pressure Switch for Control