Gree GMV-VDR5PH/SA-S User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
ERV+DX coil
Models:
GMV-VDR5PH/SA-S
GMV-VDR8PH/SA-S
GMV-VDR10PH/SA-S

To Users
Thank you for selecting Gree product. Please read this instruction manual
carefully before installing and using the product, so as to master and correctly use
the product. In order to guide you to correctly install and use our product and
achieve expected operating effect, we hereby instruct as below:
(1) This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way and understand
the hazards involved. Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children without supervision.
(2) In order to ensure reliability of product, the product may consume some
power under stand-by status for maintaining normal communication of
system and preheating refrigerant and lubricant. If the product is not to be
used for long, cut off the power supply; Please energize and preheat the
unit in advance before reusing it.
(3) Please properly select the model according to actual using environment,
otherwise it may impact the using convenience.
(4) If the product needs to be installed, moved or maintained, please contact
our designated dealer or local service center for professional support.
Users should not disassemble or maintain the unit by themselves,
otherwise it may cause relative damage, and our company will bear no
responsibilities.
(5) All the illustrations and information in the instruction manual are only for
reference. In order to make the product better, we will continuously
conduct improvement and innovation. If there is adjustment in the product,
please subject to actual product.

Exception Clauses
Manufacturer will bear no responsibilities when personal injury or property loss
is caused by the following reasons:
(1) Damage the product due to improper use or misuse of the product.
(2) Alter, change, maintain or use the product with other equipment without
abiding by the instruction manual of manufacturer.
(3) After verification, the defect of product is directly caused by corrosive gas.
(4) After verification, defects are due to improper operation during
transportation of product.
(5) Operate, repair, maintain the unit without abiding by instruction manual or
related regulations.
(6) After verification, the problem or dispute is caused by the quality
specification or performance of parts and components that produced by
other manufacturers.
(7) The damage is caused by natural calamities, bad using environment or
force majeure.

Contents
1 Safety Notices (Please Be Sure to Abide Them) ·············1
2 Product Introduction···················································5
2.1 Function Introduction ····················································· 5
2.2 Major Structure ····························································· 7
2.3 Outline Dimensions ······················································· 8
2.4 Performance Parameters ················································ 9
2.5 Parameters of Filter and Heat Exchange Core ··················· 10
2.6 List of Accessories ······················································ 11
2.7 Dimension of Connection Pipe ······································· 11
3 Production Installation··············································12
3.1 General Specification ··················································· 12
3.2 Electricity Connecting ·················································· 12
3.3 Wiring Work ······························································· 14
3.4 Installation for Pipeline ················································· 20
3.5 Engineering Design ····················································· 24
4 Inspection, Pilot Run and Daily Setting ·······················29
4.1 Check Before Startup ··················································· 29
4.2 Pilot Run and Debugging Test ········································ 30
4.3 Daily Setting ······························································ 30
5 Daily Error Inquiry and Maintenance···························31
5.1 Error Diagnosis··························································· 31
5.2 Error Code Table ························································· 32
5.3 Maintenance of Key Components ··································· 33

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1 Safety Notices (Please Be Sure to Abide Them)
SPECIAL WARNING:
(1) Do not pierce or burn.
(2) Do not use means to accelerate the defrosting process or to clean, other
than those recommended by the manufacturer.
(3) Be aware that refrigerants may not contain an odor.
PROHIBITED: This sign indicates that the operation must be prohibited.
Improper operation may cause severe damage or death to people.
WARNING: If not abide them strictly, it may cause severe damage to the
unit or the people.
NOTICE: If not abide them strictly, it may cause slight or medium damage
to the unit or the people.
OBSERVED: This sign indicates that the items must be observed.
Improper operation may cause damage to people or property.
WARNING!
This product can’t be installed at corrosive, inflammable or explosive
environment or the place with special requirements, such as kitchen. Otherwise, it
will affect the normal operation or shorten the service life of the unit, or even cause
fire hazard or serious injury. As for above special places, please adopt special air
conditioner with anti-corrosive or anti-explosion function.
Please install the unit
according to the
instructions in this
manual. Read this
manual carefully
before starting up or
chec
king the machine.
Installation should be
performed by the
distributor or qualified
technicians.
Do not
install the
product by
yourself.
Improper
installation
may result
in water
leakage,
electric
shock or fire
hazard

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Before installation,
please check the
power cord if it is in
accordance with the
specifications on the
nameplate.
Make sure
the
power is safe.
The air conditioner
must be properly
grounded through a
power receptacle to
avoid electric shock.
The grounding wire
shouldn't be
connected with a gas
pipe, water pipe,
lightning arrester or a
telephone line.
When installing,
specialized
accessories and parts
must be used;
otherwise water
leakage, electric
shock, fire hazard
may occur.
R410A refrigerant
can produce
poisonous
gas once it
meets fire, so
please
ventilate the
room
immediately if
refrigerant leaks out
during installation.
A damaged power
cord or connecting
wire must be replaced
with a
specialized
electric
cable by a
professional
technician.
If the power cord is to
be connected, please
put back the cover of
electric box after
connecting
the cord to
avoid danger.
Nitrogen must be
charged according to
technical
requirements.
Connect power 8
hours before
operation. Do not
disconnect power if
you want to stop the
unit in a short period
of time, e.g. in one
night. (This is for
protecting the
compressor.)
For units that adopt
wired control, do not
connect power until
the wired controller is
well installed.
Otherwise, the
wired
controller
cannot be
used.
When installation is
finished,
please check
and make sure
the
drain pipe,
pipeline
and electric
wires are
all well
connected so
as to
avoid water
leakage,
refrigerant
leakage,
electric
shock
and fire hazard.

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Never
start or stop the
air conditioner
by
inserting or
removing
the power
cord.
Never put your finger
or any object into the
air outlet or air grille.
Children under the
age of 12 and
persons with reduced
physical,
sensory or
mental
capabilities or
lack
of experience
and
knowledge shall
not
operate this
appliance.
Do not operate the
machine with wet
hands.
Please turn the unit
off and unplug the
unit before cleaning.
Otherwise, it may
cause electric shock
or personal injury.
Do not spray water
on this product or
wash the inside of the
unit with water;
otherwise, it will
cause malfunction or
electric shock.
Do not expose this
product directly to
water or place it in a
damp or corrosive
environment.
Do not repair this
product by yourself.
Incorrect work will
cause electric shocks
or fire. Please
contact
GREE service center
for repairs.
During cooling mode,
indoor
temperature
should
not be set too
low.
Keep the
difference
between
indoor
temp and
outdoor
temp within
5°C.
Do not turn off the
unit until it runs for
at
least 5 minutes.
Otherwise, oil return
of the compressor
will be affected.

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Volatile liquid like
thinner or gasoline
will damage the
appearance of this
product. (Please use
soft dry cloth and wet
cloth with mild
detergent to
clean the
outer case of the
machine.)
For non-
professionals, never
touch the fan volute
or other movable
parts, as it may result
in injury.
When an abnormality
(such
as a bad smell)
occurs, stop the unit
at once and
disconnect power.
Then contact GREE
service center. If the
unit continues to
operate despite
abnormal condition, it
may be damaged
and
cause electric
shocks
or fire.
For safety concern, if
the
unit is not used for
a long time,
please
remove the
power
plug.
Please clean the air
filter regularly. Keep
the air filter clean.
Install
a bird screen or
a
similar device at the
external air vent.
The outdoor air inlet
must be far away from
the exhaust
port of
flammable
gas.
The air inlet must be
located in a place
where backflow of
exhaust air will not
occur.
A service port of
specific size must be
reserved
according
to the
instructions of
installation.
In order to avoid
incomplete
combustion, which
may lead to
intoxication, keep
heating appliances
away
from the air flow
of the unit.

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For pipe fan and
partition wall fan,
mind the air from the
open air duct or
other
appliances
that
produce open
fire
flowing back
into the
indoor side.
Please verify
completely before
using the appliance
in special places (for
example, places
where there are
precision
instruments, food
and art works).
Due to the limitation
of the detection
principle of air quality
detector, in places
where humidifiers or
aroma diffusers are
used, the air quality
detector will inevitably
produce
different
deviations.
This is a
normal
phenomenon.
2 Product Introduction
2.1 Function Introduction
This series of fresh air unit is a ventilation device that can continuously filter fresh
air for 24 hours and replace the installation of indoor air to meet user comfort
requirements. The built-in heat exchange core of the unit can efficiently recover the
exhaust energy during operation and reduce the additional indoor load brought
about fresh air. The inside of the unit is also equipped with an evaporator which has
the function of cooling and heating, further processing the fresh air after heat
exchange. It will not increase AC capacity load additionally during the process of
enjoying fresh air, avoiding indoor temperature fluctuation brought about fresh air,
thus reducing comfort. This series of units also adopts constant air volume
technology and a combination of various operating modes to greatly expand the
applicable location of the unit.
The product accords with Rule (EU) 1253–2014.

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Table 2-1 Function list
Function
Model
Remarks
GMV-VDR5PH/SA-S
GMV-VDR8PH/SA-S
GMV-VDR10PH/SA-S
Operation control √
Linkage control √ Used with multi VRF unit
Fan speed √
Heat exchange operation
mode
√
Bypass operation mode √
Auto operation mode √
Cooling mode √
Heating mode √
Dehumidification mode √
Supply air mode √
Positive pressure mode √
Negative pressure mode √
Air filter √
Filter clean/replacement alarm √
Timer √
Group control √
Free cooling √
Free cooling at night √
Centralized control ○
The function is available when
used with Gree centralized
controller
Remote control ○
The function is available when
used with Gree remote
monitoring system
Remark: √-Standard function, ○-Optional function, ×-Not available.

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2.2 Major Structure
1 Hook 7 Side access panel 13 Fresh air fan
component
2
Access panel bolt
8
Air inlet of fresh air
14
Electrical box
3
Air inlet of discharge
9
Air outlet of discharge
15
Side discharge filter
4
Air outlet of fresh air
10
Evaporator
16
Heat exchanger core
5
Natural outlet
11
Water pump
17
Side fresh air filter
6 Water pump outlet 12 Electronic expansion
valve 18 Discharge fan component

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2.3 Outline Dimensions
Figure 2-1 GMV-VDR5PH/SA-S
Figure 2-2 GMV-VDR10PH/SA-S and GMV-VDR8PH/SA-S
Table 2-2 Outline dimensions
Measuring unit: mm
Model A B C D E F G H I J
GMV-VDR5PH/SA-S 333 130 340 170 727 1700 880 292 498 1762
GMV-VDR8PH/SA-S 498 197 390 210 1033 1800 1185 458 637 1861
GMV-VDR10PH/SA-S

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Measuring unit: mm
Model K L N M O P Q R S
GMV-VDR5PH/SA-S 328 226 196 250 175 200 130 247 185
GMV-VDR8PH/SA-S 482 268 230 268 217 207 159 123 53
GMV-VDR10PH/SA-S
NOTE!
Due to individual differences in production assembly, above figures may vary from
those of the present products. Please refer to the actual dimensions of your product.
2.4 Performance Parameters
Table 2-3 Performance parameters
Model GMV-VDR5PH/
SA-S
GMV-VDR8PH/
SA-S
GMV-VDR10PH/
SA-S
Power supply V 220–240
Rated frequency Hz 50/60
Power input W 270 440 640
Cooling capacity W 8500 12000 14500
Heating capacity W 4000 10600 12000
Fresh air
conditioning
load
Cooling W 3600 6300 8000
Heating W 2000 8040 8400
Fresh air volume m3/h 500 800 1000
External static pressure Pa 150 150 150
Thermal efficiency % 73 74 73
Noise dB 55 59 62
Weight kg 120 158 158
Connection pipe size of duct
type mm 200 250 250
NOTES!
(1) Airflow volume data is the value tested under the condition of rated static
pressure in high fan speed, subject to actual installation condition, there might
be certain deviation.

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(2) The nominal static pressure is the static pressure tested acquiescently when
leaving the factory, other high-level filter might affect unit performance
parameter.
(3) Please use Fresh Air Conditioning Load (Cooling) to do capacity calculation or
selection.
(4) Thermal efficiency is test result that refer to the heating working conditions of
the EU1253 instruction.
(5) The nominal cooling and heating capacity is the combined capacity of the
outdoor and indoor units of the system with the following operating conditions:
—
Cooling Heating
Indoor Air Inlet
Temperature
27℃ DB/ 19.5℃ WB 20℃ DB/ 12℃ WB
Outdoor Air Inlet
Temperature
35℃ DB/ 28℃WB 7℃ DB/ 6℃ WB
2.5 Parameters of Filter and Heat Exchange Core
Table 2-4 Parameters of filter and heat exchange core
Measuring unit: mm
Model GMV-
VDR5PH/SA-S
GMV-
VDR8PH/SA-S
GMV-
VDR10PH/SA-
S
Washable
Recyclable
Suggested
replacement
time
Rough
filter 155×382×28 184×530×35 Yes No
Refer to the
tips of wired
controller
after
cleaning for
3 times
Heat
exchange
core
268×386×382 330×450×522 No No 2 years
Rough filter (standard configuration)
Heat exchange core

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NOTE!
Conduct cleaning and maintenance periodically for the fresh air side of filter and
discharge side of filter.
2.6 List of Accessories
Table 2-5 List of accessories
Measuring Unit: pc
No. Name
GMV-
VDR5PH/ SA-S
GMV-
VDR8PH/ SA-S
GMV-
VDR10PH/ SA-S
Remarks
1
Nut with washer
M10×8
4 4 4
2 Nut M10 4 4 4
3
Washer 10(spring
washer M10×2.6)
4 4 4
4
Washer 10(big
washer
M10×Φ30×2.5)
4 4 4
5 Union nut 2 2 2
6
Insulating sleeve of
gas collecting pipe
1 1 1
7
Insulating sleeve of
liquid inlet pipe
1 1 1
8 Drain pipe sponge 2 2 2
9 Drain hose 1 1 1
10 Drain hose sponge 1 1 1
11 Clamp 1 1 1
12 Wired controller 1 1 1
13 Rubber ring 2 2 2
14 Cable tie 8 8 8
NOTE!
The package base can be used to locate the unit during installation.
2.7 Dimension of Connection Pipe
Model Gas pipe (mm) Liquid pipe (mm)
GMV-VDR5PH/ SA-S
Φ12
Φ6
GMV-VDR8PH/ SA-S Φ16 Φ9.52
GMV-VDR10PH/ SA-S
Φ16
Φ9.52

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3 Production Installation
3.1 General Specification
The user shall entrust professional HVAC engineer to conduct equipment model
selection and engineering design, hire experienced construction company to
complete the construction. The design and construction shall be consistent with
related national stipulations and regulations.
This series of unit shall be used with multi VRF unit. It can be connected to the
system by means of mixed connection. To avoid affecting the performance of indoor
unit, the capacity sum of the connected fresh air unit and normal indoor unit shall
between 50%～100% of the capacity of outdoor unit. Among which, the capacity of
the connected fresh air unit shall not exceed 30% of the capacity of outdoor unit;
otherwise, it will affect user comfort, or even damage the unit.
3.2 Electricity Connecting
3.2.1 Requirements for Electric Installation
(1) Install units according to national wiring codes.
(2) Power cord must be reliably secured to avoid stress on wire terminal.
(3) Please connect wire according to the standard and make sure the unit operate
normally. The connection wire between indoor unit and outdoor unit must apply
the required electric wire and avoid stress on wire terminal, otherwise fire
hazard may be caused.
(4) If the power cord and connection wire are damaged, it shall be replaced by the
professionals with specialized wire.
(5) The wire shall not touch the refrigerant pipe, the fan or other parts.
(6) All electric installation must be performed by qualified personnel in accordance
with local laws, regulations and this manual.
(7) Units must be properly grounded to specialized grounding device in the
building. Please ask professionals to install.
(8) Air switch and circuit breaker that can disconnect power of the whole system
must be installed.
(9) During installation, please install all-pole disconnection device with contact
separation not less than 3mm in the power supply circuit.

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(10) The circuit breaker should have both magnetic trip and thermal trip functions so
as to protect the unit when short circuit or overload occurs.
3.2.2 Requirements for Electric Installation
(1) Reliable grounding must be ensured. The yellow-green wire inside the unit is a
ground wire, so it shall not be used for other purposes nor shall it be cut. Do not
tighten it with tapping screws; otherwise it will cause risk of electric shock.
(2) Power supply must provide reliable grounding terminal. Do not connect the
ground wire to the following:
1. Water pipe; 2. Gas pipe; 3. Drain pipe; 4. Other places that are deemed as
not
reliable by professional personnel.
WARNING!
Before installation and maintenance, please cut off power supply to avoid electric shock.
Please use the wire according to related configuration requirement. Otherwise it may lead to
unit malfunction and hazards such as electric shock and fire hazard.
Special statement
If the users alter the electric control system by themselves without prior consent of our
company, our company will not bear any responsibility for the abnormal results caused by
this.
3.2.3 Requirements for Electric Installation
Dimension of power cord and capacity of air switch:
Table 3-1 Wiring requirement
Model Power
specification
Circuit breaker
capacity (A)
Wire diameter (mm²)
Ground wire Ground wire
GMV-VDR5PH/SA-S
220–240V～
50/60Hz 6 3x1.0 3x1.0
GMV-VDR8PH/SA-S
GMV-VDR10PH/SA-S
NOTES!
(1) Selection of circuit breaker and power cord in the above table is based upon
unit’s maximum power (maximum current).
(2) Specification of power cord is based on the working condition where ambient
temperature is 40℃ and multi-core copper cable (working temperature is 90℃,

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e.g. power cable with YJV cross-linked copper, insulated PE and PVC sheath)
is lying on the surface of slot (IEC 60364-5-52). If working condition is changed,
please adjust the specification according to national standard.
(3) Specification of circuit breaker is based on the working condition where
ambient temperature of circuit breaker is 40℃. If working condition is changed,
please adjust the specification accordingly.
(4) Install cut-off device near the unit. The minimum distance between each stage
of cut-off device should be 3mm.
3.3 Wiring Work
3.3.1 Requirements for Wiring Work
(1) The unit must be grounded securely, or it may cause electric shock.
(2) The capacity of power supply must be sufficient. The sectional area of wires in
the room should comply with relevant selection requirements and be installed
with circuit breaker for branch circuit.
(3) The unit should be powered by independent circuit and specific socket.
(4) Install circuit breaker for branch circuit according to related regulations and
electrical standards.
(5) All wiring must use pressure terminal or single wire. Multi-twisted wire that
connects directly to the wiring board may cause fire hazard.
(6) Keep cable away from fan and other motional parts.
(7) Do not alter the inner wires of unit. Manufacturer does not assume
responsibility
for damage or abnormal operation due to this reason.
(8) If the unit is installed in places with strong electromagnetic interference, it's
recommended to use twin-twisted shield wire. During wire connection, please
pay attention that the metal shield layer of the twin-twisted wire must
be
grounded (outer case) in order to prevent the unit from electromagnetic
interference.
(9) The communication wires should be separated from power cord and
connection
wire between indoor unit and outdoor unit.
3.3.2 Connection of Wires and Wiring Board Terminals
(1) Connection of single branch wires
1) Use a stripper to strip away about 25mm of the insulation layer at the end of

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single branch line so that the single-core wire can be exposed.
2) Remove the wiring screws on the patch board.
3) Shape the tail of wire into ring by needle nose pliers, and keep the gauge
of
ring in accordance with screw.
4) Lead the screw across the circle of the single branch line and fix it on the
wiring board.
(2) Connection of multi-twisted wires
1) Use a wired stripper to strip away about 10mm of the insulation layer at the
end of multi-twisted wire.
2) Remove the screws on wiring board.
3) Use a round terminal fastener or pliers to securely fasten the round
terminal
with each core wire of the multi-core wire.
4) Confirm the position of each core wire on the round terminal and then use
a
screwdriver to tighten the terminal screw.
Unit: mm
Connection of Power Cord:
1) The unit must be installed with circuit breaker independently which is used
for short circuit protection and overload protection. The circuit breaker shall
be closed in normal times.
2) During operation, all outdoor units, fresh air units and outdoor units in the
same system must be kept energized. Otherwise, the system cannot operate
normally.

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Figure 3-1 Diagram for system electric wiring
NOTE!
Max indoor unit quantity n is according to the outdoor unit capacity. For more
details, please refer to the unit capacity configuration.
3.3.3 Selection of Communication Wire
(1) Selection of wired controller communication wire
Figure 3-2 Diagram of wired controller control connection