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Hitachi HRNME Serie Installations- Und Betriebshandbuch Seite 23

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9 REFRIGERANT CYCLE
EXAMPLE:
No. Part Name
1
Compressor
2
Outdoor Heat Exchanger
3
Accumulator
4
Expansion valve
5
Reversing Valve
6
Solenoid Valve
7
Strainer
8
Distributor
9
Check Joint
10
High Pressure Switch Protection
11
Sensor for Refrigerant Protection
12
Stop Valve for Gas Line
13
Stop Valve for Liquid Line
Refrigerant Flow
Refrigerant Flow
for Cooling
for Heating
10 UNITS INSTALLATION
10.1. OUTDOOR UNITS INSTALLATION
CAUTION:
Transport the products as close to the installation location as
practical before unpacking.
Do not put any material on the products.
Apply four lifting wires on to the outdoor, when lifting it by crane
WARNING:
- Install the outdoor unit with sufficient clearance around it for
operation and maintenance as shown in the next figures.
Install the outdoor unit where good ventilation is available
- Do not install the outdoor unit where is a high level of oil mist,
salty air or sulphurous atmosphere.
- Install the outdoor unit as far as practical (being at least 3 meters)
from electromagnetic wave radiator (such as medical equipment).
- For cleaning, use noninflammable and nontoxic cleaning liquid.
Use of inflammable agent may cause explosion or fire.
- Work with sufficient ventilation, for working in an enclosed space
may cause oxygen deficiency. Toxic gas may be produced when
cleaning agent is heated to high temperature by, e.g., being
exposed to fire.
PMML0197_r0_04-10.indb 23
INSTALLATION AND OPERATION MANUAL
Field Refrigerant
Flare Connection
Flange Connection
Piping
No. Part Name
14
Ambient Thermistor
15
Evaporating Pipe Thermistor
16
Gas Discharge Thermistor
17
Capillary Tube
18
Strainer
19
Branch Pipe (liquid)
20
Branch Pipe (gas)
21
Indoor Heat Exchanger
22
Strainer
23
Expansion valve
24
Distributor
25
Silencer
Brazing Connection
- Cleaning liquid shall be collected after cleaning.
- Pay attention not to clamp cables when attaching the service
cover to avoid electric shock or fire.
CAUTION:
Keep clearance between the units of more than 50mm, and avoid
obstacles that may hamper air intake, when installing more than
one units together.
Install the outdoor unit in the shade or not exposed to direct
sunshine or direct radiation from high temperature heat source.
Do not install the Outdoor Unit in a space where a seasonal wind
directly blows to the Outdoor fan.
Check to ensure that the foundation is flat, level and sufficiently
strong.
Install the unit in a restricted area not accessible by the general
public
Aluminum fins have very sharp edges. Pay attention to the fins to
avoid injury.
23
R410A
4.15 MPa
Airtight Test
Refrigerant:
Pressure:
08/07/2010 9:20:30

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