high melting point (+ 1083 ° С) and thermal conductivity (400 W / m * K); the minimum content in the chemical composition of impurities potentially hazardous to humans; high anti-corrosion properties of the outer and inner surfaces of pipes, which are provided due to the appearance of a stable oxide film; minimum roughness of internal surfaces; Allowable piping length and difference in height are the maximum piping distance (or height) between the indoor unit and outdoor unit at which installation is possible. Allowable piping length and difference in height vary by model. Case studies What's happening Models 3.6 kW KIT-36PY3ZH5 (S-36PY3E + U-36PZH3E5) 5.0 kW KIT-50PY3ZH5 (S-50PY3E + U-50PZH3E5) 6.0 kW KIT-60PY3ZH5 (S-60PY3E + U-60PZH3E5) 4 way 60x60 cassette - PY3 From 3,6 to 6,0 kW (3 capacity sizes). Chassis dimensions (H x W x D): 243 x 575 x 575 mm. SEER/SCOP class A++*. Built-in drain pump. 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. 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. 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 Pipe diameter (Liquid) Inch (mm) 1/4 (6,35) Pipe diameter (Gas) Inch (mm) 3/8 (9,52) Pipe length range: m: 3 ~ 15 Elevation difference (in/out) (6) m: 15 Pipe length for additional gas: m: 7,5 Additional gas amount: g/m 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. 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 GPTR7.