6
CAUTION
• While following the instructions in this installation manual, in-
stall drain piping in order to ensure proper drainage and insu-
late piping in order to prevent condensation.
Improper drain piping may result in water leakage and property
damage.
• Do not touch the heat exchanger fins.
Improper handling may result in injury.
• Be very careful about product transportation.
• Safely dispose of the packing materials.
Packing materials, such as nails and other metal or wooden parts,
may cause stabs or other injuries.
Tear apart and throw away plastic packaging bags so that children
will not play with them. If children play with the plastic bags which
were not torn apart, they face the risk of suffocation.
• Do not touch the refrigerant pipes during and immediately af-
ter operation.
During and immediately after operation, the refrigerant pipes may
be hot and may be cold, depending on the condition of the refrig-
erant flowing through the refrigerant piping, compressor, and other
refrigerant cycle parts. Your hands may suffer burns or frostbite if
you touch the refrigerant pipes.
• Do not turn off the power immediately after stopping operation.
Always wait at least five minutes before turning off the power. Oth-
erwise, water leakage and trouble may occur.
• Do not use a charging cylinder.
Using a charging cylinder may cause the refrigerant to deteriorate.
• The refrigerant R410A requires strict cautions for keeping the
system clean, dry and tight.
A. Clean and dry
Foreign materials (including mineral oils such as SUNISO oil or
moisture) should be prevented from getting mixed into the sys-
tem.
B. Tight
R410A does not contain any chlorine, does not destroy the
ozone layer, and does not reduce the earth’s protection against
harmful ultraviolet radiation.
R410A can contribute slightly to the greenhouse effect if it is
released. Therefore we should take special attention to check
the tightness of the installation.
Read the chapter “Refrigerant piping” carefully and follow these
procedures correctly.
• Since R410A is a mixed refrigerant, the required additional re-
frigerant must be charged in its liquid state. (If the refrigerant
is charged in a state of gas, its composition changes and the
system will not work properly.)
The indoor unit is for R410A. See the catalog for indoor unit models
which can be connected.
(Normal operation is not possible when connected to other units.)
• Do not allow children to mount on the outdoor unit, or avoid
placing any object on it.
Falling or tumble may result in injury.
• Make sure to provide for adequate measures in order to pre-
vent that the outdoor unit be used as a shelter by small ani-
mals.
Small animals making contact with electrical parts can cause mal-
functions, smoke or fire. Please instruct the customer to keep the
area around the unit clean.
NOTE
• Install the indoor and outdoor units, power supply wires and
transmission wires at least 3.5ft. away from televisions or ra-
dios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5ft. may not be suf-
ficient to eliminate the noise.)
• Dismantling of the unit, treatment of the refrigerant, oil and
eventual other parts, should be done in accordance with the
relevant local and national regulations.
• Do not use the following tools that are used with conventional
refrigerants. (Gauge manifold, charge hose, gas leak detector,
reverse flow check valve, refrigerant charge base, vacuum
gauge, refrigerant recovery equipment.)
If the conventional refrigerant and refrigerator oil are mixed in the
R410A, the refrigerant may deteriorate.
• Never perform piping connection work for the outdoor unit
when it is raining.
〈〈〈〈
Safety Precaution
〉〉〉〉
The PCI Data Station is a class A product. In a domestic environment
this product may cause radio interference in which case the user may
be required to take adequate measures.
1. INTRODUCTION
This installation manual concerns VRV inverters of the Daikin REYQ-M
series. These units are designed for outdoor installation and used for
cooling and heatpump applications.
The REYQ-M units can be combined with Daikin VRV series indoor
units for air conditioning purposes.
The present installation manual describes the procedures for unpack-
ing, installing and connecting the REYQ-M units. Installation of the
indoor units is not described in this manual. Always refer to the installa-
tion manual supplied with these units for their installation.
1-1 Combination
The indoor units can be installed in the following range.
• Always use appropriate indoor units compatible with R410A.
To lean which models of indoor units are compatible with
R410A, refer to the product catalogs.
• Total capacity/quantity of indoor units
〈
Outdoor unit
〉
〈
Total capacity of indoor units
〉 〈
Total quantity of indoor units
〉
REYQ96MTJU......................48 ~ 120
10 units
REYQ192MTJU....................96 ~ 240
20 units
1-2 Standard operation limit
The figures below assume following operating conditions for indoor and
outdoor units:
Equivalent pipe length................................................................ 25ft.
Level difference............................................................................ 0ft.
Cooling
Heating
A
Outdoor temperature (°FDB)
B
Indoor temperature (°FWB)
C
Outdoor temperature (°FWB)
D
Indoor temperature (°FDB)
Range for continuous operation
Range for pull down operation
Range for warming up operation
5
10
30
41
50
60
70
50
60
70
80 90
20
40
D
C
23
30
40
50
60
70
80
90
100
60
57
50
70
77 80 90
B
110
A
40
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