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Contents
1. Safety precautions
►
Before installing the unit, make sure you read all the “Safety precau-
tions”.
After installation, perform the test run to ensure normal operation. Then explain
your customer the “Safety Precautions,” use, and maintenance of the unit based
on the information in the Operation Manual. Both the Installation Manual and the
Operation Manual must be given to the user. These manuals must always be kept
by the actual users.
: Indicates a part which must be grounded.
Warning:
Carefully read the labels attached to the unit.
Warning:
Precautions that must be observed to prevent injuries or death.
Caution:
Precautions that must be observed to prevent damages to the unit.
1. Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Installation location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Drainage piping work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Water piping work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6. Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7. Test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8. Special function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Warning:
•
The unit must not be installed by the user. Ask an installer or an autho-
rized technician to install the unit. If the unit is installed improperly, water
leakage, electric shock, or fi re may be caused.
•
The unit must be installed according to the instructions in order to mini-
mize the risk of damages by earthquakes, typhoons, or strong winds. Im-
properly installed unit may fall down and cause damages or injuries.
•
The unit must be securely installed on a structure that can sustain its
weight. If the unit is mounted on an unstable structure, it may fall down
and cause damages or injuries.
•
If the air to water heat pump is installed in an enclosed area, measures
must be taken to prevent the refrigerant concentration in the room in the
event of refrigerant leakage. Consult an installer regarding the appropriate
measures. Should the refrigerant leak and cause the concentration oxygen
in the room may lack.
•
Ventilate the room if refrigerant leaks during operation. If refrigerant comes
into contact with a fl ame, poisonous gases will be released.
•
All electric work must be performed by a qualifi ed technician according to
local regulations and the instructions given in this manual. The units must
be powered by dedicated power lines and the correct voltage and circuit
breakers must be used. Power lines with insuffi cient capacity or incorrect
electrical work may result in electric shock or fi re.
•
Only the specified cables can be used for wiring. Connections must be
made securely without tension on the terminals. If cables are connected or
installed improperly, It may result in overheating or fi re.
•
Terminal block cover panel of the outdoor unit must be fi rmly fi xed. If the
cover panel is mounted improperly, dust and moisture may enter the unit,
and it may cause electric shock or fi re.
•
When installing or moving the air to water heat pump, make sure to use the
specifi ed refrigerant (R410A) to charge the refrigerant lines. Do not either
mix it with any other refrigerant or allow air to remain within the pipes. Air
enclosed in the pipes can cause pressure peaks resulting in a rupture and
other hazards.
•
Make sure to use accessories authorized by Mitsubishi Electric and ask
an installer or an authorized technician to install them. If accessories are
improperly installed, it may cause water leakage, electric shock, or fi re.
•
Do not remodel the unit. Consult an installer for repairs. If alterations or
repairs are not performed correctly, it may cause water leakage, electric
shock, or fi re.
•
The user should never attempt to repair the unit or transfer it to another
location. If the unit is installed improperly, it may cause water leakage,
electric shock, or fi re. If the air to water heat pump needs to be repaired or
moved, ask an installer or an authorized technician.
•
After installation has been completed, make sure that refrigerant does not
leak. If refrigerant leaks into the room and comes into contact with the
fl ame of a heater or portable cooking range, poisonous gases will be re-
leased.
•
Use clean enough water which meets water quality standards. The dete-
rioration of water quality may result in the system breakdown or the water
leakage.
•
Never use anything other than water as a medium. It may cause a fi re or an
explosion.
•
Do not use heated or cooled water that is produced by the air to water
heat pump directly for drinking or cooking. There is a risk to damage your
health. There is also a risk that installing the water heat exchanger may
corrode if the necessary water quality for the air to water heat pump sys-
tem cannot be maintained. If you wish to use the heated or cooled water
from the heat pump for these purposes, take measure such as to the sec-
ond heat exchanger within the water piping system.
1.1. Before installation
Caution:
•
Do not use the unit in an unusual environment. If the air to water heat
pump is installed exposed to steam, volatile oil (including machine oil),
or sulfuric gas, or exposed to briny air, or covered with snow, the perfor-
mance can be signifi cantly reduced and the internal parts can be damaged.
•
Do not install the unit where combustible gases may leak, be produced,
flow, or accumulate. If combustible gas accumulates around the unit, it
may cause fi re or explosion.
•
The outdoor unit produces condensate during the heating operation. Make
sure to provide drainage around the outdoor unit if such condensate is
likely to cause damage.
•
When installing the unit in a hospital or in a building where communication
equipments are installed, you may need to take measures to noise and
electronic interference. Inverters, home appliances, high-frequency medi-
cal equipment, and radio communications equipment can cause the air to
water heat pump to malfunction or to breakdown. At the same time, the
noise and electronic interference from the air to water heat pump unit may
disturb the proper operation of medical equipment, and communications
equipment.
1.2. Before installation (relocation)
Caution:
•
Be fully careful when moving the units. The unit must be carried by at least
2 people, as it weighs 20 kg or more. Do not hold the packaging bands.
Wear protective gloves to unpack and to move it, in order to avoid your
hands be injured by fi ns or other parts.
•
Be sure to safely dispose of the packaging materials. Packaging materials,
such as nails and other metal or wooden parts may cause injuries.
•
The base of the outdoor unit must be periodically checked to ensure not
being loose, cracked or damaged. If such defects are left untreated, the
unit may fall down and cause damage or injuries.
•
Do not wash the air to water heat pump unit. You may receive an electric
shock.
