Daikin R-410A Installation Manual page 42

Installation
Any presence of air or other foreign substance in the
refrigerant circuit causes an abnormal pressure rise or
rupture, resulting in injury.
Do not reconstruct or change the settings of the pro-
•
tection devices.
If the pressure switch, thermal switch, or other protection
device is shorted and operated forcibly, or parts other
than those specified by Daikin are used, fire or explosion
may result.
Do not touch the switch with wet fingers.
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Touching a switch with wet fingers can cause electric
shock.
Be sure to install an ground leakage breaker.
•
Failure to install an ground leakage breaker may result in
electric shocks, or fire.
Heat exchanger fins are sharp enough to cut.
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To avoid injury wear glove or cover the fins when working
around them.
Do not allow children to play on or around the unit as
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they could be injured.
Refrigerant pipes may be very hot or very cold during
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or immediately after operation.
Touching them could result in burns or frostbite. To avoid
injury give the pipes time to return to normal temperature
or, if you must touch them, be sure to wear proper gloves.
CAUTION
Do not touch the refrigerant pipes during and imme-
•
diately after operation.
During and immediately after operation, the refrigerant
pipes may be hot and may be cold, depending on the con-
dition of the refrigerant flowing through the refrigerant pip-
ing, compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the refrig-
erant pipes.
NOTE
While following the instructions in this installation
•
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent con-
densation.
Improper drain piping may result in water leakage and
property damage.
Be very careful about product transportation.
•
Do not turn off the power immediately after stopping op-
•
eration.
Always wait at least five minutes before turning off the
power. Otherwise, water leakage or other problems can
occur.
Do not use a charging cylinder.
•
Using a charging cylinder may cause the refrigerant to
deteriorate.
Systems using R-410A must be kept clean, dry, and
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tightly installed.
A.Clean and dry:
Foreign materials (including mineral oils such as
SUNISO oil or moisture) should be prevented from get-
ting mixed into the system.
41
B.Tight:
R-410A can contribute slightly to the greenhouse effect
if it is released so be sure to check the tightness of the
installation.
Read the chapter "Refrigerant piping" carefully and fol-
low these procedures correctly.
Since R-410A is a mixed refrigerant, the required ad-
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ditional refrigerant must be charged in its liquid state.
If the refrigerant is charged in a state of gas, its com-
position changes and the system will not work prop-
erly.
The indoor unit uses R-410A and all connected units
require the same to ensure normal operation.
Take precautions to prevent the outdoor unit from be-
•
ing used as a shelter by small animals.
Small animals making contact with electrical parts can
cause malfunctions, smoke, or fire. Advise the customer
to keep the area around the unit clean.
Install the indoor and outdoor units, power supply
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wires and transmission wires at least 3.5 ft. away
from televisions or radios to prevent image interfer-
ence or noise.
Depending on the radio waves, a distance of 3.5 ft. may
not be sufficient to eliminate the noise.
Dismantling of the unit, and treatment of the refriger-
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ant, oil, and other parts should be done in accor-
dance with the relevant local and national
regulations.
Radio interference may result if installed too close to other
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electrical devices.
Do not use the following tools that are used with con-
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ventional refrigerants: Gauge manifold, charge hose,
gas leak detector, reverse flow check valve, refriger-
ant charge base, vacuum gauge, refrigerant recovery
equipment.
If conventional refrigerants or refrigerator oils are mixed
in the R-410A, the refrigerant may deteriorate.
Never perform piping connection work for the out-
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door unit when it is raining.
1. INTRODUCTION
This manual provides installation instructions for Daikin
REYQ-M series VRV inverters designed for outdoor
installation and used for cooling and heatpump applica-
tions.
The REYQ-M units can be combined with Daikin VRV
series indoor units and
these instructions describeunpacking, installing, and
connecting the REYQ-M units. Installation of the indoor
units is not described in this manual. Always refer to the
specific installation manual supplied a unit for its instal-
lation.
EDUS39-605
Installation of Outdoor Units