What are the pipe sizes? Asked by james on 06/26/2012 1 Answer. ManualsOnline posted an answer 11 years, 5 months ago. The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here. 1. Check the capacity of the system you wish to replace 2. Select from the Panasonic range the best system to replace it with 3. Follow the procedure detailed in the brochure and technical data Simple Reuse of existing piping (Renewal Design & Installation) Notes on Reuse of Existing Refrigerant Piping Pipe Diameter inch: 3/8: Gas Side mm: ø 19.05: inch: 3/4: Pipe Extension Chargeless Pipe Length m: 7.5: Maximum Pipe Length m: 30: Maximum Elevation Length m: 20: Additional Refrigerant Gas* g/m: 30: Power Supply: Outdoor Specifications Features Brochure Description Reviews CS/CU-Z71XKR Panasonic 7.1kW Z Series Reverse Cycle Split System Air Conditioner R32 | Advance Air Purification System | Nanoe™X 1. Gravure size The copper pipe for this air conditioner mainly uses 2 types: For 1 HP machines (~ 9000 BTU), use copper pipes with an outer diameter of 10 mm. For 1.5 HP machines (~ 12000 BTU), use copper pipes with an outer diameter of 10 mm or 12 mm. For 2 HP machines (~ 18000 BTU), use copper pipes with an outer diameter of 12 mm. Appliance manuals and free pdf instructions. Find the user manual you need for your home appliance products and more at ManualsOnline. I use to have a pdf for easy reference that I cannot find right now but; E9JKR = 1/4-3/8 inch. E12JKR-E21JKR = 1/4-1/2 inch. E24JKR-E28JKR = 1/5-5/8 inch. W7DKR-W9DKR = 1/4-3/8 inch. W12EKR-W18DKR = 1/4-1/2 inch. W24EKR = 1/4-5/8 inch. All ducted up to 14kW = 3/8-5/8 inch. Air Conditioner Pair Coil/Copper Pipe Sizing Chat for Split System. January 13, 2023 by starsparky direct. Please seek professionals for Air Conditioning installation. Please do not DIY. There are 5 common sizes of copper pipes. See tablel: Ø Diameter (in i nches) Ø Diameter (in mm) 1/4''. W i-Fi Function, Supported with Panasonic Comfort Cloud App (Read More) Environmental Friendly R32 Refrigerant. Product Specification. 1.5 HP (Heatpump Model - With Remote Control) Cooling Capacity:11,900 Btu/h. Heating Capacity: 13,600 Btu/h. Grade 1 Energy Label. Warranty. 1 year warranty: Entire unit. Models CU-2Z52VBR PORT A Room 2.5 2.0 or Either unit or 3.5 or 4.2 5.0 or 3.2 to 7.7 kW ø 6.35 Maximum Pipe Maximum Additional Length (Total) Chargeless Length Gas Maximum Height Type Capacity [kW class] 2.0 ø 9.52 20 m 30 m 20 m 54knq14.