Table Of Contents; Safety Precautions - Mitsubishi Electric PUHZ-W50 Installation Manual

Contents
1. Safety precautions ..................................................................................... 2
2. Installing the FTC unit ............................................................................... 3
3. System ...................................................................................................... 4
4. Electrical work ........................................................................................... 6
5. Check ...................................................................................................... 13
"FTC" is the abbreviation of "Flow Temperature Controller", which is described as "FTC" in this manual.

1.Safety precautions

Before installing the FTC unit, make sure you read all the "Safety pre-
cautions".
Please report to your supply authority or obtain their consent before
connecting this equipment to the power supply system.
Warning:
Precautions that must be observed to prevent injuries or death.
Caution:
Precautions that must be observed to prevent damages to the unit.
Warning:
• The unit must not be installed by the user. Ask an installer or an authorized
technician to install the unit. If the unit is installed improperly, electric
shock, or fi re may be caused.
• For installation work, follow the instructions in the Installation Manual and
use tools and pipe components specifi cally made for use with refrigerant
specifi ed in the outdoor unit installation manual.
• The unit must be installed according to the instructions in order to mini-
mize the risk of damages by earthquakes, typhoons, or strong winds.
Improperly 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.
• All electric work must be performed by a qualifi ed technician according to
local regulations and the instructions given in this manual. The unit 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 (Environment)
Caution:
• Do not install the FTC unit in outdoor location as it is designed for indoor
installation only. Otherwise electric shock or breakdown may be caused by
water drop, wind or dust.
• Do not use the unit in an unusual environment. If the FTC unit is installed or
exposed to steam, volatile oil (including machine oil), or sulfuric gas, or ex-
posed to briny air, 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, it may
cause fi re or explosion.
1.2. Before installation or relocation
Caution:
• Be fully careful when moving the units. Do not hold the packaging bands.
Wear protective gloves to unpack and to move it, in order to avoid your
hands be injured by parts.
1.3. Before electric work
Caution:
• Be sure to install a circuit breaker. If it is not installed, there may be a risk
to get an electric shock.
• For the power lines, use standard cables of suffi cient capacity. Otherwise,
it may cause a short circuit, overheating, or fi re.
• When installing the power lines, do not apply tension to the cables. The
cables may be cut or overheated resulting in a fi re.
1.4. Before starting the test run
Caution:
• Turn on the main power switch of the outdoor unit more than 12 hours
before starting operation. Starting operation immediately after turning on
the power switch can severely damage the internal parts. Keep the main
power switch turned on during the operation period.
2
6. Remote controller operation .................................................................... 13
7. Initial setting by remote controller ............................................................ 22
8. Defi nition of analog signal by remote controller ...................................... 24
9. Troubleshooting ...................................................................................... 25
Guide to plan local applications .................................................................... 26
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 provided by local application manufacture.
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.
• 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 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.
• 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 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 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 electric shock or
fi re. If the FTC unit needs to be repaired or moved, ask an installer or an
authorized technician.
• When installing the unit in a hospital or in a building where communica-
tions equipment are installed, you may need to take measure to noise and
electronic interference. Inverters, home appliances, high-frequency medical
equipment, and radio communications equipment can cause the FTC unit
to malfunction or to breakdown. At the same time, the noise and electric
interference from the FTC unit may disturb the proper operation of medical
equipment, and communications equipment.
• Be sure to safely dispose of the packaging materials. Packaging materials,
such as nails and other metal or wooden parts may cause injuries.
• Do not wash the FTC unit. You may receive an electric shock.
• Make sure to ground the unit. Do not connect the ground wire to gas or
water pipes, lightning rods, or telephone grounding lines. If the unit is not
properly grounded, there may be a risk to get an electric shock.
• Make sure to use circuit breakers (ground fault interrupter, isolating switch
(+B fuse), and molded case circuit breaker) with the specifi ed capacity. If
the circuit breaker capacity is larger than the specified capacity, break-
down or fi re may result.
• Before starting operation, check that all protective parts are correctly in-
stalled. Make sure not to get injured by touching high voltage parts.
• Do not touch any switch with wet hands. There may be a risk to get an
electric shock.
• After stopping operation, make sure to wait at least 5 minutes before turn-
ing off the main power. Otherwise, it may cause breakdown.