For Indoor UnitThis air conditioner uses the refrigerant R410A.External diameter of service port R410A: 5/16"Split System Air Conditioner85264190582000 2011 CV6233187754INSTALLATION INSTRUCTIONSNOTEContentsPageIMPORTANT!Please Read Before Starting .................................. 21. GENERAL .......................................................... 41-1. Tools Required for Installation (not supplied)1-2. Accessories Supplied with Unit1-3. Optional Copper Tubing Kit1-4. Type of Copper Tube and Insulation Material1-5. Additional Materials Required for Installation2. INSTALLATION SITE SELECTION ................... 52-1. Indoor Unit2-2. Embedding the Tubing and Wiring3. HOW TO INSTALL THE INDOOR UNIT ............. 73-1. Preparation for Suspending3-2. Suspending the Indoor Unit3-3. Placing the Unit Inside the Ceiling3-4. Installing the Drain Piping3-5. Checking the Drainage3-6. How to Install the Ceiling Panel3-7. Wiring Instructions3-8. Wiring Instructions for Inter-unit Connections4. HOW TO TEST RUN THE AIR CONDITIONER ... 145. REMOTE CONTROLLER INSTALLATIONPOSITION ......................................................... 155-1. Mounting on a Wall6. ADDRESS SWITCH .......................................... 166-1. Address Setting of the Remote Controller7. CONNECTING A HOME AUTOMATIONDEVICE.............................................................. 178. INSTALLATION CHECK SHEET ...................... 17Model CombinationsCombine indoor and outdoor units only as listedbelow.Model No.Indoor Unit Outdoor UnitCS-MKS9NB4U CU-3KS19NBUCS-MKS12NB4U CU-4KS24NBUCS-KS18NB4UW CU-4KS31NBUPower Source:60 Hz, single-phase, 230 / 208 VACCeiling PanelCZ-18BT1U