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INSTALLATION INSTRUCTIONS & USER'S MANUAL
Through The Wall Air Conditioner / Heat Pump
Thank you for choosing this YMGI product. Please read the owner's manual carefully before installation and operation and retain
for your records and future reference. If you need a replacement copy, please contact your local agent or visit www.ymgigroup.com
to download a current electronic version.
This product is designed and manufactured to be free from any defects in material and workmanship during normal use and
maintenance. Installation, operation, maintenance and repair must follow all standards and professional practices for regular
cooling and heating equipment, such as NEC, State, or Local Codes and all related documents/manuals provided by YMGI.
Failure to follow and adhere to all codes and documentation can cause damage to equipment, property even personal injury.
Installer: Currently licensed/certified HVAC technicians only. Must Read the manual and all provided documents prior to
installation. Complete and fill out all required information on the warranty registration card.
User: Retain this manual and all supplied documents for your records and future reference.
Servicer: Use this manual for information concerning servicing and maintenance of this product.
Only qualified technicians should install and service this equipment. The installation, startup, operation and servicing of this
equipment can be hazardous and requires a HVAC professional who has been trained, licensed and certified. Installations,
adjustments or any equipment alterations done by an unqualified person could result in serious injury and even death. When
working on the equipment, observe all precautions in the provided documents, on the tags, stickers, and labels that are attached
to or placed on the equipment.
YMGI, Engineered Comfort Products for A Sustainable
TTWA / TTWP
05-12K Btu/h Cooling or Heat Pump
04 Version
NOTICE
SAFETY WARNING
and Efficient Green World!
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Summary of Contents for YMGI TTWA Series
- Page 1 04 Version Thank you for choosing this YMGI product. Please read the owner’s manual carefully before installation and operation and retain for your records and future reference. If you need a replacement copy, please contact your local agent or visit www.ymgigroup.com to download a current electronic version.
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Page 2: Table Of Contents
Auxilary Controls and Dip Switches ....................... 32 Normal Operating Sounds and Conditions ..................... 33 Error Codes ............................34 Trouble Shooting ..........................35 RT Conversion Tables .......................... 36 Wiring Diagrams ............................ 37 User Notes and Installation/Service and Maintenance Notes ..............41 YMGI • Your Modern Green Idea... -
Page 3: Ttwa And Unit Accessories
Optional accessories to complete a particular installation are the following: • • • • • • • • • • • NOTE: Consult sales literature for the appropriate voltage and amperage selections, if applicable. YMGI • Your Modern Green Idea... -
Page 4: Introduction
Refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs), may affect the ozone layer. Not all refrigerants have the same potential impact on the environment. YMGI Group advocates for the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs. - Page 5 Copyright This document and the information contained therein are the sole property of YMGI Group and shall not be used or reproduced in whole or in part, without the written permission of YMGI Group. YMGI Group reserves the right to revise this manual at any time and to make changes to its content without obligation to notify anyone about any modifications, revisions or changes.
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Page 6: Note From Ymgi - Must Read
YMGI Group is the MEDIA AUTHORITY: YMGI Group, located in O'Fallon, MO, is the author of all media produced for its products and is the only party able to give any additional explanation for any data, definitions and or descriptions found within any of its media, including but not limited to YMGI product brochures, manuals, pamphlets, catalogs, and videos. - Page 7 With the information provided above, you will know some things to look for and questions you can ask. If at any time you feel there may be an issue with the installation, please have your technician contact YMGI at (866)833-3138 x 703 with any questions, issues or concerns you may have.
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Page 8: Limited Product Warranty
YMGI Group upon request. Warranty parts may be new or refurbished. All parts are tested and approved before shipping. At no time does YMGI Group warrant labor cost of any type. Warranty will start from the date of successful installation at original installation location, or 90 days as of original shipping date from YMGI Group, whichever comes first. - Page 9 YMGI Technical support the exact part(s) needed to fix the problem(s). 2. YMGI will check the customer's warranty filing. There will be no charge for Parts with a validated and approved warranty. Any Parts that have not been validated and approved or have an invalid warranty filing resulting in an unapproved warranty request, will be charged accordingly.
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Page 10: Limited Product Warranty Registration Card
YMGI • Your Modern Green Idea... -
Page 11: Safety Precautions
If the unit does not operate normally or if you notice any type of burning odor, power off the unit and turn off the main power supply, then immediately contact your YMGI authorized repair service center or HVAC professional. - Page 12 YMGI Group will not be responsible for any personal injury or any property damage caused by improper or incorrect installation, improper service or maintenance or by not following the instructions listed in this manual. DO NOT pull on the power supply cords or refrigeration lines that are connected to the indoor and outdoor units.
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Page 13: System Specifications
Coil length x 16.81” x 9.92” 16.81” x 9.92” 16.81” x 9.92” 16.81” x 9.92” 16.81” x 9.92” 16.81” x 9.92” 16.81” x 9.92” height Number of 18*U 18*U 18*U 18*U 18*U 18*U 18*U circuits YMGI • Your Modern Green Idea... - Page 14 °F 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 Note: Due to product improvements, specifications are subject to change without notice. YMGI • Your Modern Green Idea...
- Page 15 427*252 427*252 427*252 Number of circuits 18*U 18*U 18*U 18*U Indoor air flow (Hi / Med / Lo) Indoor external static pressure (Hi) Indoor sound level (sound pressure level)-Cooling dB(A) 60/52 60/52 60/52 60/52 YMGI • Your Modern Green Idea...
- Page 16 60.8 - 89.6 °C 16~46.1 16~46.1 16~46.1 16~46.1 Ambient temp °F 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 60.8 - 114.98 Note: Due to product improvements, specifications are subject to change without notice. YMGI • Your Modern Green Idea...
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Page 17: Operating Instructions And Lcdi Cords
VOLTAGE MEASUREMENTS Before connecting the unit, measure the supply voltage. Voltage must within the voltage utilization range given in Table 1. Operating Voltage Voltage Utilization Range Unit Voltage Rating Minimum Maximum 230/208 Table 1. YMGI • Your Modern Green Idea... -
Page 18: Installation Instructions
SOURCES MAY BE PRESENT. FAILURE TO DISCONNECT ALL POWER SOURCES MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. HIGH VOLTAGE TO PREVENT ELECTRICAL SHOCK, PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH, DO NOT REMOVE GROUNDING PRONG FROM PLUG. FOLLOW ALL OPERATING INSTRCTIONS. YMGI • Your Modern Green Idea... -
Page 19: Wall Sleeve Assembly
Fasten the wall sleeve (Fig 4). Refer to the Installation Instructions supplied with the wall sleeve for a complete description of the installation procedure. NOTE: Wall sleeve is not shipped with chassis and must be purchased separately. YMGI • Your Modern Green Idea... -
Page 20: Outdoor Grille Installation
The front grille can be removed for more thorough cleaning or to make the model and serial numbers accessible. Open the panel and remove the two grille screws can remove the grille. Pull the grille out from the bottom and lift up from the tabs on the top of the case. YMGI • Your Modern Green Idea... - Page 21 Loosen locking plate screw and rotate tab with tab behind wall case flange (See Fig C) then tighten locking plate screw. 6. If outlet is on the left side of the unit, route power cord as shown in Fig D. YMGI • Your Modern Green Idea...
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Page 22: Vent Control And Air Direction
1. Remove the front grille. 2. Remove the vent card screw. Remove the vent card, turn it over and replace it by locating rear hole in card over locating pin inside air discharge and reattaching screw at front. YMGI • Your Modern Green Idea... - Page 23 2. Check if there are any obstruction before the indoor and outdoor grilles, the obstruction must be removed to ensure there is no obstruction. If air is obstructed and/or deflected back into the unit, the air conditioner's compressor may cycle start/stop rapidly. This could cause damage to the compressor. YMGI • Your Modern Green Idea...
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Page 24: Maintenance And Cleaning
The Cabinet Front and discharge air grille can be cleaned with a water dampened cloth. Under no circumstances should hydrocarbon-based cleaners (e.g. acetone, benzene, naphtha gasoline, etc.) or ammonia based cleaners be used to clean the front or air grilles. Be careful when cleaning the control area. YMGI • Your Modern Green Idea... -
Page 25: Wiring
PERSONS OR ANIMALS WHO ARE UNABLE REACT TO THE FAILURE OF THIS PRODUCT. THE FAILURE OF AN UNATTENDED AIR CONDITIONER MAY RESULT IN EXTREME HEAT IN THE CONDITIONED SPACE CAUSING OVERHEATING OR DEATH OF PERSONS OR ANIMALS. TAKE PROPER PRECAUTIONS TO AVOID UNATTENDED OPERATION. YMGI • Your Modern Green Idea... -
Page 26: Unit Features
The unit can be turned ON/OFF by front desk control switch. This function interface is located on the 24V thermostat connection board. 24V General Thermostat interface (optional) This unit is designed to allow the easy installation of a 24V general thermostat. YMGI • Your Modern Green Idea... -
Page 27: Operating Instructions
OPERATING INSTRUCTIONS YMGI • Your Modern Green Idea... - Page 28 Other display icons: Fan mode Clock (blinks when clock Heating mode set function is turned on) Remote buttons are Fan speed display. Locked Low voltage. Unit is not getting adequate Automatic fan speed. voltage. YMGI • Your Modern Green Idea...
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Page 29: Advanced Settings
R1~R8 will be display every 3 seconds. When display the right range, release the two keys to save the settings. The temperature setting range is between 60°F~90°F as factory default. Heating Temperature Limits(°F) Cooling Temperature Limits(°F) YMGI • Your Modern Green Idea... - Page 30 4. Fan speed button: Pressing fan speed button selects the fan speed in a cycle, as: high ( ), low ), and auto (indicated by the icon flashing). NOTE: under AUTO speed, air condition will select proper fan speed automatically according to ambient temperature. YMGI • Your Modern Green Idea...
- Page 31 5. When remote control will not be used for prolonged periods, remove the batteries to avoid potential corrosion damage to the remote. 6. If the display on remote controller appears fuzzy or the display does not show any icons, please replace batteries. YMGI • Your Modern Green Idea...
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Page 32: Auxilary Controls And Dip Switches
If you forget the default setting, please refer to the wiring diagram, make sure #2,#3,#8 are the same with the diagram. YMGI • Your Modern Green Idea... -
Page 33: Normal Operating Sounds And Conditions
This is due to a built–in delay to protect the compressor. Beep Response The buzzer will beep “Di” (0.1 sec) as response when receiving a command from key pad control or the remote control. YMGI • Your Modern Green Idea... -
Page 34: Error Codes
2. Check the outdoor fan, make sure it is running properly, if not, repair the fan. 3. Check the outdoor coil sensor plug, make sure that it is inserted firmly. Or replace the sensor. YMGI • Your Modern Green Idea... -
Page 35: Troubleshooting
If circuit breaker is tripped or fuse is blown more than once, contact a qualified electrician. If unit is installed where condensation drainage could drip in an undesirable location, an accessory drain kit should be installed and connected to drain system. YMGI • Your Modern Green Idea... -
Page 36: Rt Conversion Tables
4.11 0.89 73.4 5.320 5.377 5.484 2.22 2.78 174.2 0.882 0.908 0.934 4.13 0.87 75.2 5.131 5.185 5.238 2.27 2.73 0.858 0.884 0.910 4.15 0.85 77.0 4.950 5.05 2.31 2.69 3274 Sensor resistance table YMGI • Your Modern Green Idea... -
Page 37: Wiring Diagrams
TTWA Wiring Diagrams TTWA0 Wiring Diagram AC Only YMGI • Your Modern Green Idea... - Page 38 TTWA0 Wiring Diagram AC + Heater YMGI • Your Modern Green Idea...
- Page 39 TTWA0 Wiring Diagram HP YMGI • Your Modern Green Idea...
- Page 40 TTWA0 Wiring Diagram HP + Heater YMGI • Your Modern Green Idea...
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Page 41: User Notes And Installation/Service And Maintenance Notes
USER NOTES AND INSTALLATION/SERVICE/MAINTENANCE NOTES INSTALLATION NOTES Put down any questions, comments, or problems you have experienced as a unit history: Asked Technician Did You Ask YMGI Date Notes for Help? Tech. for Help? YMGI • Your Modern Green Idea... - Page 42 Put down whatever questions you have or problems you have seen as a unit history: Company Name, Technician Name, Job Not Performed Technician Checklist Date Phone & HVAC License # by Technician Completed Fully? YMGI • Your Modern Green Idea...
- Page 43 SERVICE / MAINTENANCE NOTES Company Name, Technician Name, Date Service / Maintenance Phone & HVAC License # YMGI • Your Modern Green Idea...
- Page 44 YMGI is dedicated to designing, manufacturing and distributing the highest quality, energy saving and environmentally friendly air conditioner and heat pump products, while providing the best service and support to all of our customers. Our mission is to help build a sustainable, efficient and green world.
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