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

ERV+DX coil
1
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

ERV+DX coil
2
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.

ERV+DX coil
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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.

ERV+DX coil
4
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.

ERV+DX coil
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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.

ERV+DX coil
6
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.