Gree GMV-Pdhm224W/Na-M Beilage

HEAT RECOVERY D.C INVERTER MULTI VRF

Installation and Operating Instruction Manual

This Manual is applicable to following outdoor units:

Basic Model：

GMV-Pdhm224W/Na-M GMV-Pdhm280W/Na-M

GMV-Pdhm335W/Na-M GMV-Pdhm400W/Na-M

GMV-Pdhm450W/Na-M

Combined Model：

GMV-Pdhm504W2/Na-M ～GMV-Pdhm1800W4/Na-M

Please read this Manual carefully before

installation and use.

Thanks for your selection of Gree Air Conditioner Unit. Before use, please read this instruction

manual carefully and keep it properly to ensure correct use of this machine.

Instruction to Users 1

Safety Considerations 3

Selection of Installation Location and Precautions 8

Installation of Outdoor Unit 14

Connection of Indoor and Outdoor Units 25

Communication of the System 44

Notice for Project Installation 64

Installation Guideline for Air

Conditioner Unit

Filling of Refrigerants and Test Run 66

Operating Principle of Muti-split and Heat-recovered Air-Conditioning

Units 68

Types of Indoor Units to Be Integrated 70

Maintenance Measures 71

Reclaim refrigerants 72

Troubleshooting 75

Operating Temperature Range and Rated Work Conditions of the Unit

Performance Parameters of the Unit

Instruction to Users

☆ During using the unit under only-cooling /heating mode, the total capacity of indoor

units which are running simultaneously shouldn’t be more than that of outdoor unit,

or else poor cooling/heating capacity of each indoor unit will be resulted in. Under

principal-cooling /heating mode, the total capacity of indoor units as principal part

which are running simultaneously shouldn’t be more than that of outdoor units，or

else poor cooling /heating capacity of each indoor unit will be resulted in.

☆According to capacity of each indoor unit, an air switch (or fuse) to each indoor unit

and a master switch to all indoor units should be installed. Each air switch, which is

usually shut off, is used for short circuit protection and abnormal overload of

corresponding indoor unit。The master switch is used for unified power supply for

all indoor units or shut-off of power supply.

☆For smooth start of air conditioner unit, the main power switch shall be put to “ON”

position 8 hours before start.

☆Upon receiving STOP signal from each indoor unit, the fan of related indoor unit will

continue to work for 20~70 seconds for purpose of utilizing the remaining cold air

or heats in heat exchanger and also make preparations for next use. This is normal.

☆ During installation, do not mix communication lines with power cables. Be sure to

separate them at minimum spacing over 20cm; otherwise it might result in

communication problem.

☆ If switch between cooling / dry mode and heating mode of indoor unit occurs or if

indoor unit is off under heating mode, brief flowing sound of refrigerants of cooling

and heating mode exchanger may occur ,which is normal.

☆ Install the cooling and heating mode exchanger in the place like corridor where

noise requirement is correspondingly lenient, furthermore, it should be installed in

ceiling with good sound insulation. Avoid installing it in the place like bedroom,

ward or office where low noise is required.

☆An all-pole disconnection switch having a contact separation of at least 3mm in all

poles should be connected in fixed wiring

☆electric supply tolerances: (220-240V)±10%, (50±1)Hz

☆humidity :30-95%

☆installation altitude :max 1000m

☆transport/storage temperature : -25-55°C.

☆Main switch provided by end user: main switch handle should be black or gray and it

can be locked in “OFF” position with padlock

☆The main disconnection device should be explained in user manual and the height

should be recommended as 0.6-1.7m. Over current protection is required (EN

60947-3, EN 60947-2)

Safety Considerations

1．Please read this manual carefully before use and operate correctly as instructed in the manual.

2．You are specially warned to note the two symbols below.

WARNING!: A symbol indicates that improper operation might cause human death or severe

injuries.

CAUTIONS!: A symbol indicates that improper operation might cause human injury or

property damage.

WARNING!

zPlease seek an authorized repair station for installation work. Improper installation might cause water

leakage, electric shock or fire.

zPlease install at a place strong enough to support the weight of air conditioner unit. If not, the air

conditioner unit might fall down and cause human injury or death.

zTo ensure proper drainage, the drainage pipe shall be correctly installed according to installation

instructions. Take proper measures for heat preservation to prevent condensing. Improper installation of

pipes might cause leakage and wet the articles in the room.

Do not use or store flammable, explosive, poisonous or other dangerous substances beside the air

conditioner.

zIn case of trouble (e.g. burnt smell), please immediately cut off the main power of air conditioner unit.

zKeep air flow to avoid shortage of oxygen in the room.

zNever insert your finger or any objects into air outlet and inlet grill.

zPlease take constant care to check if the mounting rack is damaged after long use.

zNever modify the air conditioner. Please contact the dealer or professional installation workers for repair

or relocation of the air conditioner.

Safety Considerations

Cautions!

zCAUTION FOR REFRIGERANT LEAKS

(Point to note connection with refrigerant leaks)

Introduction

The installer and system specialist shall safety against leakage according to local regulations or standards.

The following standards may be applicable if local regulations are not available. The GMV-Pdhm System

like other air conditioning system uses R410A as refrigerants.R410A itself is an entirely safe non-toxic,

non-combustible refrigerants. Nevertheless care must be taken to ensure that air conditioning facilities are

installed in a room which is sufficiently large. This assures that the maximum concentration level of

refrigerant gas is not exceeded, in the unlikely event of major leak in the system and this in accordance

with the local applicable regulations and standards.

Maximum concentration level

The maximum charge of refrigerants and the calculation of the maximum concentration of refrigerants is

directly related to the humanly occupied space in which it could leak.

The unit of measurement of the concentration is 1b/ft³(the weight in 1b of the refrigerant gas in 1 ft³

volume of the occupied space).

Compliance to the local applicable regulations and standards for the maximum allowable concentration

level is required.

1).Direction of the refrigerant flow

2).Room where refrigerants leak has occurred (outflow of the entire refrigerants from the system).

Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant

is heavier than air.

Procedure for checking maximum concentration .Check the maximum concentration level in accordance

with steps 11 to 4 below and take whatever action is necessary to comply.

Safety Considerations

1. Calculate the amount of refrigerants (1b) charged to each system separately.

Amount of refrigerants in a single unit system (amount of refrigerant with which the system is charged

before leaving the factory)

Additional charging amount (amount of refrigerant added locally in accordance with the length or

diameter of the refrigerant piping)

=total amount of refrigerants (1b) in the system.

NOTE

Where a single refrigerant facility is divided into 2 entirely independent refrigerant systems then use

the amount of refrigerants with which each separate system is charged.

2. Calculate the smallest room volume(ft³)

Incase like the following, calculate the volume of (A), (B) as a single room or as the smallest room.

A. Where there are no smaller room divisions

B. Where there is a room division but there is an opening between the rooms sufficiently large to

permit a free flow of air back and forth.

Safety Considerations

1).opening between rooms.

2).partition.

(Where there is an opening without a door or where there are openings above and below the door which

are each equivalent in size to 0.15% or more of the floor area.)

3).Calculate the refrigerant density using the results of the calculations in steps 1 and 2 above.

Total volume of refrigerants in the refrigerant system ≤maximum concentration level(1b/ ft³)

Size (ft³) of smallest room in which there is an indoor unit installed. If the result of the above

calculation exceeds the maximum concentration level then make similar calculations for the second

then third smallest room and so unit the result falls short of the second then third smallest room and

so until result falls short of the maximum concentration.

4).Dealing with the situations where the result exceeds the maximum concentration level and where the

installation of a facility encounters problem then it will be necessary to revise the system. Please consult

your GREE supplier.

zBefore installation, please check the power supply for compliance with the ratings on nameplate. Check

the power safety as well. (it shall be done by professionals)

zBefore use, please check and confirm if the cables, drainage pipes and pipelines are correctly

connected, hence to eliminate the risk of water leakage, refrigerants leakage, electric shock or fire(it

shall be done by professionals)

zMain power must be securely earthed to ensure effective grounding of air conditioner unit and avoid the

risk of electric shock. Please do not connect the earthing cable to coal gas pipe, water pipe, lightning

rod or telephone line.

zOnce started, the air conditioner shall not be stopped at least after 10 minutes or longer; otherwise

service life of the unit will be affected.

Safety Considerations

zDo not let the child to operate the air conditioner unit.

zDo not operate the air conditioner unit with wet hands.

zPlease disconnect the main power before cleaning the air conditioner or replacing the air filter.

zPlease disconnect the main power if the air conditioner unit is out of use for a long period.

zThis appliance is not intended for use by persons (including children) with reduced physical, sensory or

mental capabilities, or lack of experience and knowledge, unless they have been given supervision or

instruction concerning use of the appliance by a person responsible for their safety.

zChildren should be supervised so that they can not play with the appliance.

zPlease do not expose the air conditioner unit directly under corrosive environment with water or

moisture.

zPlease do not put on or place any goods on air conditioner unit.

zAfter electrical installation, the air conditioner unit shall be energized for electrical leakage test. (it shall

be done by professionals)

Selection of Installation Location and Precautions

●Selection of Installation Location for Air Conditioner Unit

The installation of air conditioner unit must be in accordance with national and local safety

codes.

Installation quality will directly affect the normal use of air conditioner unit. The user is

prohibited from installation himself. Please contact your dealer after buying this machine.

Professional installation workers will provide installation and test services according to

installation manual.

Do not power on until all installation work is completed.

●Selection of Installation Location for Indoor Unit

Avoid☆exposing in sunshine.

Ensure the hanger rod, ceiling and building structure have sufficient strength to support the weight of air☆

conditioner unit.

☆Drainage pipe is easy to connect out.

☆Air inlet and outlet is not blocked.

Indoor and outdoor connection pipes are easy to go outdoors.☆

Do not install at a place where flammable or explosive goods exist or flammable or explosive gas might☆

leak.

Do not install at a place☆where there are corrosive gas, severe dust, salty fog, smoke or heavy moisture.

Select Installation Location of Outdoor Unit

Outdoor unit must be installed on a firm and solid support.☆

Outdoor unit shall be installed close to the indoor unit, hence to minimize the length☆and bends of cooling

pipe.

Avoid placing the outdoor unit under window or between two constructions, hence to prevent normal☆

operating noise from entering the room.

Air flow at inlet and outlet shall not be blocked.☆

Install at a well☆-ventilated place, so that the machine can absorb and discharge sufficient air.

Do not install at a place where flammable or explosive goods exist or a place☆where there are severe dust,

salty fog and polluted air.

Do not install induced draught pipe at the inlet and outlet of the outdoor unit. When the air

conditioner unit is generating heats indoors, the condensate water may flow from the base

of outdoor unit. When outdoor air is below 0 (32 ), the condensate water will be frozen.℃℉

Take care that the installation of outdoor unit shall not affect the heat radiation of the unit.

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