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Literature Part No: LIT-WMMS-(59)2S-DC IVTR-AM-II-20131130

Subject to Continuous Engineering Improvement without Prior Notice.

YMGI is the Trademark and Property of YMGI Group. Copyright of YMGI Group.

YMGI Group

 POB 1559

O'Fallon, MO 63366, USA

Tel: (866)833-3138  Fax: (866)377-3355

Web Site: www.ymgigroup.com

Email: [email protected]

LITERATURE: LIT-WMMS-(59)2S-DC IVTR-AM-II-20131130

This product is designed and manufactured

 

free from defects in material and workmanship under the normal use and 

maintenance. Installation, operation, maintenance and service shall follow professional practices for regular cooling and 
heating equipment, NEC, State, City or Local Codes and related manuals from us. Otherwise, damage to equipment or 
property even injury to people may occur.

Installer

: Currently licensed HVAC installer only, Read this manual before installation. Sign on the warranty registration card.

User

: Keep this manual for future maintenance and service use.

Servicer

: Use this manual for service reference.

DC INVERTER MULTIPLE ZONE (59) 2S

SYMPHONY CHOIR

OUTDOOR UNIT - 80 & 90CH

INSTALLER'S INSTRUCTION & 

TECHNICIAN'S SERVICE MANUAL

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

EF

EW

EC

EU

Summary of Contents for SYMPHONY CHOIR 80CH

Page 1: ... Installation operation maintenance and service shall follow professional practices for regular cooling and heating equipment NEC State City or Local Codes and related manuals from us Otherwise damage to equipment or property even injury to people may occur Installer Currently licensed HVAC installer only Read this manual before installation Sign on the warranty registration card User Keep this ma...

Page 2: ...ORTANT NOTE YMGI HOLDS FINAL EXPLANATION The quality of the installation plays a key role in whether the units will work well and for an extended period of time The information we provide in our manuals is for the sole purpose of reminding you and your installer It is our ultimate goal to help insure that your YMGI units are installed properly and correctly from the very beginning to the very end ...

Page 3: ...re humidity ranges installation operation maintenance service warranty parts and so on 4 Properly select correct most suitable YMGI product models of units and accessories for your HVAC applications jobs and list them in your proposal quote in writing on your company s quote form or letter head basing upon the information you get from 1 2 and 3 above 5 List your currently valid HVAC license and EP...

Page 4: ... the installation 5 Supply electrical power V Ph Hz measured at wiring terminal block of Indoor unit outdoor unit 7 Wire gauge length and terminal colors between circuit breaker disconnect switch to outdoor unit 9 The size of HVAC circuit breaker fuse or disconnect switch to the outdoor unit 11 What is the refrigerant pipe length between each indoor unit and the outdoor unit Unit A Unit B Unit C U...

Page 5: ... the tools to do these calculations correctly and get your approval before purchasing the air conditioner or heat pump equipment Any problems due to improper installing of the air conditioner heat pump system Installation should be conducted by currently licensed HVAC technician following manufacturer installation instructions all governing safety codes with care and professionalism Any problems d...

Page 6: ...the appointed service center A place which is full of machine oil A region with saline sodic soil near the sea A place where the sulphide fog exists such as the sulphur spring A place where the high frequency facilities exist such as radio equipment electric welder and medical equipment An environment with special conditions 1 When the place of the installation is exposed to strong wind When stron...

Page 7: ...is strength and level so that the unit will not cause any operating vibration or noise after installation 2 In accordance with the foundation drawing in the Fig 6 please drill 4 holes in the installation location A Discharge air side B Bottom view inches C Drain holes 3 Fix the unit securely with the foundation bolts You can get the M10 or M8 foundation bolts nuts and washers from the market 4 Rub...

Page 8: ...RANT PIPES Y type branch pipe must be installed in vertical or horizontal direction In the inlet of the branch pipe keep at least 19 69inch straight pipe 1 Pipe connections should be follow the following rules Outdoor unit shall be installed close to the indoor unit hence to minimize the length and bends of connection pipes The gap of outdoor unit and indoor units should be as small as possible Th...

Page 9: ...e operation 2 As shown in the following figure expel the gas from the refrigerant pipes by the vacuum pump 3 Open the pump and turn on the knobs to evacuate the gas in the liquid and gas pipes 4 When the pressure of the system is less than 0 1Mpa 1bar keep the system for more than one hour under the condition 5 Then turn off the knobs and the pump and if the pressure of the pressure vacuum gauge d...

Page 10: ...sure vacuum gauge 6 7 8 9 Hi knob Lo knob R410A tank Scale When the liquid and gas stop valves have not been opened the system is under the vacuum 1 Refer to the left of the Fig 20 connect the R410A tank to the system 2 Turn on the R410A tank and the Hi knob charge the R410A refrigerant into the system from the liquid side stop valve The Lo knob should be closed completely 3 Turn off the R410A tan...

Page 11: ...ground terminal should be provided and the ground wire cannot be connected to any of the following places a Water pipe b Coal gas pipe c Sewage pipe d Lightning rod e Telephone line f Other unreliable places considered by a professional ELECTRICAL WIRING WORK The ground connection should be reliable and the ground wire should be connected to the dedicated device of the building by the professional...

Page 12: ... or outdoor unit is blocked Remove the obstacles Air inlet or outlet of indoor unit or outdoor unit is blocked Remove the obstacles Temperature setting is improper Adjust the setting of remote controller or wire controller Air speed is set too low Adjust the setting of remote controller or wire controller Improper airflow direction Adjust the setting of remote controller or wire controller Door or...

Page 13: ... board of the outdoor unit Check for more details about the meaning of each error Conditions Causes When restart the unit soon after it is stopped The overload protection switch of the unit let the startup delayed for three minutes As soon as power supply is on The unit will stand by for approximate one minute When the cooling operation starts The hi humidity air indoor is cooled quickly The unit ...

Page 14: ...ing to include a 1 year installation service warranty at no extra charge Check with them to see if that is available If available include that in the contract 14 Verify and confirm the installation is done completely and all the unit functions have been checked and are working properly all the items in the checklist have been checked and marked well in the warranty registration card form prior to ...

Page 15: ...e exceptions Most have resulted in equipment failure due to lack of knowledge and experience A few of the problems result from DIY s lack of knowledge in the following areas Sizing and selecting correct type size and model of cooling and or heating equipment Sizing and installing correct electric circuit breakers and wires Wiring the units correctly and properly Taping the ends connecting to indoo...

Page 16: ...different from what are typical in traditional split type air conditioning and heat pump systems and similar systems made by other manufacturers These are not defects Take some time to learn the functions of your unit We will be happy to assist you with any questions you may have concerning the functions of your new unit 1 Part repair or replacement after trouble shooting This is the most common a...

Page 17: ...ND INSTALLATION SERVICE MAINTENANCE NOTES Notes Asked for Your Technician for Help Did You Ask YMGI Tech for Help INSTALLATION NOTES Original Installation Company Name Technician Name Phone HVAC License Job Not Performed by Technician Technician Checklist Completed Fully SERVICE MAINTENANCE NOTES No Date Contents of Service Maintenance Technician s Company Name Technician Name Phone HVAC License P...

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