15-5.Refrigerant Pipe And Drain Pipe Specifications - Mitsubishi Electric City Multi PWFY-P36NMU-E-BU Data Book

15. INSTALLATION
15-5. Refrigerant pipe and drain pipe specifications
15-5-1. Refrigerant pipe and drain pipe specifications
To avoid dew drops, provide sufficient anti-sweating and insulating work to the refrigerant and drain pipes.
When using commercially available refrigerant pipes, be sure to wind commercially available insulating material (with a
heat-resisting temperature of more than 212 °F (100 °C) and thickness given below) onto both liquid and gas pipes.
Be also sure to wind commercially available insulating material (with a form polyethylene's specific gravity of 0.03 and
thickness given below) onto all pipes which pass through rooms.
1) Select the thickness of insulating material by pipe size.
Model
Gas
Liquid
Drain
Insulating material's thickness
2) If the unit is used on the highest story of a building and under conditions of high temperature and humidity, it is necessary
to use pipe size and insulating material's thickness more than those given in the table above.
3) If there are customer's specifications, simply follow them.
15-5-2. Refrigerant pipe, drain pipe and filling port
▪ PWFY unit
134 (5-9/32)
114 (4-1/2)
184 (7-1/4)
206 (8-1/8)*1
(A) Refrigerant piping (gas)
(B) Refrigerant piping (liquid)
(C) Water inlet
(D) Water outlet
(E) Drain outlet
*1: PWFY-P36, P72NMU-E2-AU
MEES20K028
PWFY-P36NMU-E-BU PWFY-P36NMU-E2-AU
ø15.88 (5/8)
ø9.52 (3/8)
More than 10 mm (13/32 in)
(D)
(A)
(B)
(C)
(E)
Unit: mm (in)
PWFY-P72NMU-E2-AU
ø15.88 (5/8)
ø9.52 (3/8)
ø32 (1-1/4)
AIR TO WATER
Unit: mm (in)
ø19.05 (3/4)
ø9.52 (3/8)
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