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GMV DC Air Handler

 

3.1 Pre-Installation Instruction   

3.1.1 Checking Product Received 

After receiving the product, please check if there is any damage caused by transportation. 

Shipping damage is the responsibility of the carrier. Verify the model No., specifications and 
accessories are correct prior to installation. The distributor or manufacturer will not accept claims 
from dealers for transportation damage or installation of incorrectly shipped units.   

3.1.2 Before Installation   

Carefully read all instructions for the installation prior to installing product. Make sure each step 

or procedure is understood and any special considerations are taken into account before starting 
installation. Assemble all tools, hardware and supplies needed to complete the installation. Some 
items may need to be purchased locally. Make sure everything needed to install the product is on 
hand before starting.   

3.1.3 Codes & Regulations 

This product is designed and manufactured to comply with national codes. It is installer’s 

responsibilities to install the product in accordance with such codes and/or any prevailing local 
codes/regulations. The manufacturer assumes no responsibilities for equipment installed in violation 
of any codes or regulations.   

3.1.4 Replacement Parts   

When reporting shortages or damages, or ordering repair parts, give the complete product No. 

and serial numbers as stamped on the product. Replacement parts for this product are available 
through your contractor or local distributor.   

3.2 Important Safety Instructions 

Recognize Safety Symbols, Words, and Labels 

The following symbols and labels are used throughout this manual to indicate immediate or 

potential hazards. It is the owner’s responsibility to read and comply with all safety information and 
instructions accompanying these symbols. Failure to heed safety information increases the risk of 
serious personal injury or death, property damage and/or product damage. 

  Immediate hazards which will result in property damage, product damage, 

severe personal injury or death.   

  Hazards or unsafe practice could result in property damage, product 

damage, severe personal injury or death.   

  Hazards or unsafe practices which may result in property damage, product 

damage, severe personal injury or death.   

  Before serving or installing this equipment. The electrical power to this unit 

must be in the “off” position. Caution, more than one disconnect may exist. Failure to observe this 
warning may result in an electrical shock that can cause personal injury or death. 

 

Summary of Contents for GMV-ND09A/B-T

Page 1: ...nstructions Commercial Air Conditioners GMV DC Air Handler Models GMV ND09A B T U GMV ND12A B T U GMV ND18A B T U GMV ND24A B T U GMV ND30A B T U GMV ND36A B T U GMV ND42A B T U GMV ND48A B T U GMV ND...

Page 2: ...rvice 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 6 All the ill...

Page 3: ...turer 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 mainta...

Page 4: ...red Controller 10 4 6 Ductwork 10 4 7 Electric Heater 11 5 Wiring Work 13 5 1 Connection of Wire and Patch Board Terminal 13 5 2 Power Cord Connection 14 5 3 Connection of Communication Wire between I...

Page 5: ...kage refrigerant leakage electric shock or fire etc 14 Do not insert fingers or objects into air outlet or air return grille 15 Open the door and window frequently to keep good ventilation for avoidin...

Page 6: ...tion Outdoor Side Condition Dry Bulb Temp Wet Bulb Temp Dry Bulb Temp Wet Bulb Temp Rated Cooling 26 7 80 0 19 4 67 0 35 95 0 23 9 75 0 Rated Heating 21 1 70 0 15 6 60 0 8 3 47 0 6 1 43 0 3 Preparatio...

Page 7: ...responsibilities for equipment installed in violation of any codes or regulations 3 1 4 Replacement Parts When reporting shortages or damages or ordering repair parts give the complete product No and...

Page 8: ...ctric fault occurs The electric grounding circuit may consist of an appropriate sized power cord which connected with the grounding piece located in the unit control box and also connecting to the bui...

Page 9: ...r unit and wired controller Twisted pair line with shielding function must be applied on the communication wire between indoor unit and indoor unit outdoor unit 3 3 1 Select communication line for ind...

Page 10: ...15 GMV ND24A B T U 4 0 15 GMV ND30A B T U 4 0 15 GMV ND36A B T U 5 0 15 GMV ND42A B T U 5 0 15 GMV ND48A B T U 8 7 15 GMV ND54A B T U 8 7 15 GMV ND60A B T U 8 7 15 1 Use copper wire only as unit s po...

Page 11: ...7 295 11 5 8 508 20 GMV ND60A B T U 630 24 3 4 540 21 1 4 1448 57 295 11 5 8 508 20 4 2 Location 4 2 1 Unit Inspection Upon delivery inspect the unit for damage Any damage must be reported immediately...

Page 12: ...nce When installing in an area directly over a finished ceiling such as an attic an emergency drain pan is required directly under the unit See local and state codes for requirements When installing t...

Page 13: ...8 GMV ND60A B T U 3 4 3 8 4 3 2 Piping Preparation 4 3 2 1 Solder Connection All cut ends are to be round burr free and cleaned Failure to follow this practice increases the chances for refrigerant l...

Page 14: ...ng HVAC codes The installation must include a P style trap that is located closely to the evaporator coil Do not over tighten the drain connection in order to prevent possible damage to the evaporator...

Page 15: ...r than those recommended E HEAT mode setting method under off status press ON OFF and Menu button for 5s to turn on or turn off E heat mode After that the wired remote control pop up box shows Setting...

Page 16: ...r kit 2 Check any physical damage do not install damaged heater kit 3 Remove the upper access panel from air handler 4 Remove cover plate from air handler 5 Slide the heater kit in to the slot and sec...

Page 17: ...lations and electrical standards 6 Keep cable away from refrigerant piping compressor and fan motor 7 The communication wires should be separated from power cord and connection wire between indoor uni...

Page 18: ...to the ring tongue terminal and tighten by crimping tool 4 Use the screwdriver for tightening the terminal Unit mm inch Fig 5 1 1 Fig 5 1 2 5 2 Power Cord Connection All indoor units must be unified o...

Page 19: ...box 5 For more reliable communication make sure connect the terminal resistor to the most downstream IDU of the communication bus terminal D1 and D2 as shown in Fig 5 3 2 terminal resistor is provide...

Page 20: ...ted to D1 D2 2 Wired controller is connected to H1 H2 3 One indoor unit can connect two wired controllers that must be set as master one and slave one 4 One wired controller can control 16 indoor unit...

Page 21: ...efaulted static pressure notch for all models at ex factory is 5 7 Routine Maintenance 1 Do turn off the unit and cut off the main power supply when cleaning the air conditioner to avoid electric shoc...

Page 22: ...compatibility Error dH Wired Controller PCB Error L3 Water Full Protection d1 Indoor Unit PCB Error dC Capacity DIP Switch Setting Error L4 Wired Controller Power Supply Error d3 Ambient Temperature S...

Page 23: ...heavy heat load of room e g too many people Door or windows is open Inlet and outlet of IDU are blocked Setting temperature is too high Refrigerant is insufficient e g refrigerant leakage Poor heatin...

Page 24: ......

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