Table of Contents
Advertisement
Contents
1. Safety precautions .....................................................................................1
2. Installing the FTC unit ...............................................................................2
3. System ......................................................................................................4
4. Electrical work .........................................................................................10
5. Dip switch setting ....................................................................................25
6. Before test run .........................................................................................30
"FTC (Main)" is the abbreviation of "Flow Temperature Controller [Main]", which is described as "FTC (Main)" in this manual.
"FTC (Sub)" is the abbreviation of "Flow Temperature Controller [Sub]", which is described as "FTC (Sub)" in this manual.
In this manual, "FTC" that is not followed by "(Main)" or "(Sub)" means "FTC (Main and Sub)".
Mitsubishi Electric is not responsible for the failure of locally supplied parts.
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 damage 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 fire may be caused.
• For installation work, follow the instructions in the Installation Manual and
use tools and pipe components specifically made for use with refrigerant
specified in the outdoor unit installation manual.
• The unit must be installed according to the instructions in order to mini-
mize the risk of damage by earthquakes, typhoons, or strong winds.
Improperly installed units 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.
• All electric work must be performed by a qualified 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 insufficient capacity or incorrect
electrical work may result in electric shock or fire.
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, 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
exposed to briny air, 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 fire or explosion.
1.2 Before installation or relocation
Caution:
• Be very careful when moving the units. Do not hold the packaging bands.
Wear protective gloves to unpack and to move the units, in order to avoid
injury to your hands.
1.3 Before electric work
en
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 sufficient capacity. Other-
wise, it may cause a short circuit, overheating, or fire.
• When installing the power lines, do not apply tension to the cables. The
cables may be cut or overheated resulting in a fire.
1
FOR INSTALLER
7. Main remote controller operation ............................................................. 31
8. Troubleshooting ......................................................................................43
9. Multiple outdoor units control ..................................................................47
10. Supplementary information ....................................................................59
Local application factors ................................................................................60
After installation, perform the test run to ensure normal operation. Then explain
to your customer the "Safety Precautions" *1, use, and maintenance of the unit
based on the information in this manual. This manual must be given to the user.
This manual must always be kept by the actual users.
*1 "Safety Precautions" for user is indicated on page 31.
: This 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 fire.
• Terminal block cover panel of the unit must be firmly fixed. If the cover
panel is mounted improperly, dust and moisture may enter the unit, and it
may cause electric shock or fire.
• 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 fire.
• Do not remodel the unit. Consult an installer for repairs. If alterations or
repairs are not performed correctly, it may cause electric shock or fire.
• 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
fire. If the FTC unit needs to be repaired or moved, ask an installer or an
authorized technician.
• During installing a heat pump system, keep water from splashing on the
FTC unit.
• When installing sensors and parts, do not expose the terminals.
• When installing the unit in a hospital or in a building where communica-
tions equipment are installed, you may need to take measures to prevent
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 nearby medical equipment, and communications equipment.
• Be sure to safely dispose of the packaging materials. Packaging materi-
als, 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 specified ca-
pacity. If the circuit breaker capacity is larger than the specified capacity,
breakdown or fire may result.
Hide quick links:
Advertisement
Table of Contents
