Table Of Contents; Safety Precautions; Before Installation - Mitsubishi Electric PUHZ-RP-HA4 Installation Manual

Contents
1. Safety precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Installation location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Installing the outdoor unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Installing the refrigerant piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Drainage piping work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and Annex IV.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and reused.
This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste.
Please, dispose of this equipment at your local community waste collection/recycling centre.
In the European Union there are separate collection systems for used electrical and electronic product.
Please, help us to conserve the environment we live in!
Caution:
• Do not vent R410A into the Atmosphere:
• R410A is a Fluorinated Greenhouse gas, covered by the Kyoto Protocol, with a Global Warming Potential (GWP)=1975.

1. Safety precautions

► Before installing the unit, make sure you read all the "Safety precautions".
► Please report to or take consent by the supply authority before connec-
tion to the system.
► Equipment complying with IEC/EN 61000-3-12
(PUHZ-RP100/125/140VKA)
► PUHZ-RP200/250Y
"This equipment complies with IEC 61000-3-12 provided that the short-
circuit power S is greater than or equal to S
sc
between the user's supply and the public system. It is the responsibility
of the installer or user of the equipment to ensure, by consulation with
the distribution network operator if necessary, that the equipment is
connected only to a supply with a short-circuit power S
equal to S (*1)"
sc
S (*1)
sc
Model
PUHZ-RP200Y
PUHZ-RP250Y
Warning:
• The unit must not be installed by the user. Ask a dealer or an authorized
technician to install the unit. If the unit is installed incorrectly, water leak-
age, electric shock, or fi re may result.
• For installation work, follow the instructions in the Installation Manual and
use tools and pipe components specifi cally made for use with R410A re-
frigerant. The R410A refrigerant in the HFC system is pressurized 1.6 times
the pressure of usual refrigerants. If pipe components not designed for
R410A refrigerant are used and the unit is not installed correctly, the pipes
may burst and cause damage or injuries. In addition, water leakage, elec-
tric shock, or fi re may result.
• The unit must be installed according to the instructions in order to mini-
mize the risk of damage from earthquakes, typhoons, or strong winds. An
incorrectly installed unit may fall down and cause damage 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 damage or injuries.
• If the air conditioner is installed in a small room, measures must be taken
to prevent the refrigerant concentration in the room from exceeding the
safety limit in the event of refrigerant leakage. Consult a dealer regarding
the appropriate measures to prevent the allowable concentration from be-
ing exceeded. Should the refrigerant leak and cause the concentration limit
to be exceeded, hazards due to lack of oxygen in the room may result.
• 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.

1.1. Before installation

Caution:
• Do not use the unit in an unusual environment. If the air conditioner is
installed in areas exposed to steam, volatile oil (including machine oil), or
sulfuric gas, areas exposed to high salt content such as the seaside, or
areas where the unit will be covered by snow, the performance can be sig-
nifi cantly reduced and the internal parts can be damaged.
• Do not install the unit where combustible gases may leak, be produced,
fl ow, or accumulate. If combustible gas accumulates around the unit, fi re
or explosion may result.
2
6. Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7. Test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8. Initial settings for refrigerant leakage detection function . . . . . . . . . . . . . . . . . . 12
9. Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
10. System control (Fig. 10-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Describes precautions that must be observed to prevent damage to the unit.
After installation work has been completed, explain the "Safety Precautions," use,
(*1) at the interface point
sc
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
greater than or
sc
S (MVA)
sc
1.35
Carefully read the labels affi xed to the main unit.
1.49
• Use C1220 copper phosphorus, for copper and copper alloy seamless
• Use only specifi ed cables for wiring. The connections must be made se-
• The terminal block cover panel of the outdoor unit must be fi rmly attached.
• When installing or moving the air conditioner, use only the specifi ed refrig-
• Use only accessories authorized by Mitsubishi Electric and ask a dealer
• Do not alter the unit. Consult a dealer for repairs. If alterations or repairs
• The user should never attempt to repair the unit or transfer it to another
• After installation has been completed, check for refrigerant leaks. If refrig-
• The outdoor unit produces condensation during the heating operation.
• When installing the unit in a hospital or communications office, be pre-
Warning:
Caution:
: Indicates a part which must be grounded.
Warning:
pipes, to connect the refrigerant pipes. If the pipes are not connected cor-
rectly, the unit will not be properly grounded and electric shock may result.
curely without tension on the terminals. If the cables are connected or
installed incorrectly, overheating or fi re may result.
If the cover panel is mounted incorrectly and dust and moisture enter the
unit, electric shock or fi re may result.
erant (R410A) to charge the refrigerant lines. Do not mix it with any other
refrigerant and do not allow air to remain in the lines. Air enclosed in the
lines can cause pressure peaks resulting in a rupture and other hazards.
or an authorized technician to install them. If accessories are incorrectly
installed, water leakage, electric shock, or fi re may result.
are not performed correctly, water leakage, electric shock, or fi re may re-
sult.
location. If the unit is installed incorrectly, water leakage, electric shock,
or fi re may result. If the air conditioner must be repaired or moved, ask a
dealer or an authorized technician.
erant leaks into the room and comes into contact with the fl ame of a heater
or portable cooking range, poisonous gases will be released.
Make sure to provide drainage around the outdoor unit if such condensa-
tion is likely to cause damage.
pared for noise and electronic interference. Inverters, home appliances,
high-frequency medical equipment, and radio communications equipment
can cause the air conditioner to malfunction or breakdown. The air con-
ditioner may also affect medical equipment, disturbing medical care, and
communications equipment, harming the screen display quality.