English 2
• Be sure to ground the air conditioner.
Do not ground the unit to a utility pipe, lightning conductor
or telephone ground lead. Imperfect earthing may result in
electric shocks or fire.
A high surge current from lightning or other sources may cause
damage to the air conditioner.
• Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric
shocks or fire.
• While following the instructions in this installation manual, install
drai
n piping to ensure proper drainage and insulate piping to pre-
vent condensation.
Improper drain piping may result in indoor water leakage and
property damage.
• Install the indoor, BS and outdoor units, power cord and connect-
ing wires at least 1 meter away from televisions or radios to pre-
vent picture interference and noise.
(Depending on the incoming signal strength, a distance of 1 meter
may not be sufficient to eliminate noise.)
• Remote controller (wireless kit) transmitting distance can be
shorter than expected in rooms with electronic fluorescent lamps
(inverter or rapid start types).
Install the indoor unit and BS unit as far away from fluorescent
lamps as possible.
• Make sure to provide for adequate measures in order to prevent
that the outdoor unit be used as a shelter by small animals.
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.
• Do not install the air conditioner in the following locations:
1. Where there is a high concentration of mineral oil spray or
vapour (e.g. a kitchen).
Plastic parts will deteriorate, parts may fall off and water leakage
could result.
2. Where corrosive gas, such as sulphurous acid gas, is pro-
duced.
Corroding of copper pipes or soldered parts may result in
refrigerant leakage.
3. Near machinery emitting electromagnetic radiation.
Electromagnetic radiation may disturb the operation of the
control system and result in a malfunction of the unit.
4. Where flammable gas may leak, where there is carbon fiber or
ignitable dust suspensions in the air, or where volatile flamma-
bles such as paint thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.
• The air conditioner is not intended for use in a potentially explo-
sive atmosphere.
1-
2 Special notice of product
[CLASSIFICATION]
This air conditioner comes under the term “appliances not accessible
to the general public”.
[EMC CHARACTERISTICS]
VRVIII System 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.
[REFRIGERANT]
VRVIII System use R410A refrigerant.
• The refrigerant R410A requires that strict precautions be
observed for keeping the system clean, dry and tightly sealed.
Read the chapter “REFRIGERANT PIPING” carefully and follow
these procedures correctly.
A.Clean and dry
Strict measures must be taken to keep impurities (including
fluid, dirt and dust) out of the system.
B.Tightly sealed
R410A contains no chlorine, does not destroy the ozone layer
and so does not reduce the earth’s protection against harmful
ultraviolet radiation. R410A will contribute only slightly to the
greenhouse effect if released into the atmosphere. Therefore,
sealing tightness is particularly important in installation. Care-
fully read the chapter “REFRIGERANT PIPING” and strictly
observe the correct procedures.
• As the design pressure for local connection piping (suction·HP/LP
gas pipe, gas pipe, and liquid pipe) is at least 3.3 MPa, it is pos-
sible to use existing piping (design pressure of at least 3.3 MPa,)
but refer to "6. REFRIGERANT PIPING" and check that existing
piping (including branch piping) is compatible with this unit in
terms of materials and thickness and that it does not appear to be
corroded.
Air tight test (3.3 MPa 24/h) to check the strength of existing pip-
ing and that it has no gas leaks.
If it is not possible to perform a pressure test, replace existing pip-
ing with piping rated at at least 3.3 MPa.
• Check that there has not been compressor malfunction, gas sup-
ply exhaustion, or similar issues that could be attributable to pipe
problems in the past. If there have been any such problems,
check that appropriate repairs were made, and if not, implement
such repairs.
• Existing power supply and transmission wiring is also designed to
be used with existing wiring, but check that specifications match
and that parts (especially terminals) do not appear to have aged,
and implement appropriate procedures (e.g. replacement).
• Since R410A is a mixed refrigerant, the required additional refrig-
erant must be charged in its liquid state. (If the system is charged
with refrigerant in its gaseous state, due to composition change,
the system will not function normally).
• The indoor unit is designed for R410A use. See the catalogue for
indoor unit models that can be connected. (Normal operation is
not possible when connecting units that are originally designed
for other refrigerants.)
• Use BSVQ-P, BSV4Q100P, or BSV6Q100P with the Heat Recov-
ery Series (RQCEQ). (The Heat Recovery Series cannot be con-
nected to older BS units.)
Total maximum refrigerant charge limits
The total maximum refrigerant charge of a VRVIII system must be
below 100kg, this to be in accordance with CE requirement
(EN60335-2-40 standard).
This means that in case the total maximum refrigerant charge of the
system (factory and additional charge) is equal to or more than
100kg you must divide your multiple outdoor system into smaller
independent systems, each containing less than 100kg refrigerant
charge.
For factory charge, refer to the unit name plate.
Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type : R410A
GWP
(1)
value : 1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
the factory refrigerant charge of the product,
the additional refrigerant amount charged onsite and
+ the total refrigerant charge on the refrigerant charge label
supplied with the product.
The filled out label must be adhered in the proximity of the product
charging port (e.g. onto the inside of the service cover).
(2) In case of multiple outdoor systems, only 1 label must be
adhered, mentioning the total factory refrigerant charge of all outdoor
units connected on the refrigerant system.
1
factory refrigerant charge of
the product : see unit name
plate
(2)
2
additional refrigerant amount
charged in the field
3 total refrigerant charge
4
Contains fluorinated green-
house gases covered by the
Kyoto Protocol
5 outdoor unit
6
refrigerant cylinder and man-
ifold for charging
01_EN_3P226891_9.fm Page 2 Tuesday, December 1, 2009 4:38 PM
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