Refrigerant Piping (Only For Kpi-(502-1002)X4E); Drain Piping - Hitachi KPI-252E4E Installations- Und Betriebshandbuch

REFRIGERANT PIPING (ONLY FOR KPI-(502-1002)X4E)

4 REFRIGERANT PIPING (ONLY FOR KPI-(502-1002)X4E)
4.1 PIPING CONNECTION
Position of piping connection is the following:
4.1.1 Size of piping connection

Piping size
Units: mm (inch)
Model KPI KPI-502X4E
Gas Piping Ø12.70 (1/2")
Liquid Piping Ø 6.35 (1/4")

Thickness of the copper pipes
Units: mm (inch)
Nominal diameters
(1/4)
(3/8)
(1/2)
(5/8)

5 DRAIN PIPING

5.1 GENERAL INFORMATION
- INCORRECT
Incorrect: upward slope
Incorrect: rising part
!
C A U T I O N
• Do not create an upper-slope or rise for the drain piping, since drain
water will flow back to the unit and leakage to the room will occur
when the unit operation is stopped.
• Do not connect the drain pipe with sanitary or sewage piping or any
other drainage piping.
8 PMML0371A rev.1 - 08/2016
4
KPI-802X4E KPI-1002X4E
Ø 15.88 (5/8") Ø 15.88 (5/8")
Ø 6.35 (1/4") Ø 9.53 (3/8")
Outer diameters Thickness
6.35 0.80
9.53 0.80
12.70 0.80
15.88 1.00
4

Flare pipe dimensions
Nominal diameters

Flare nut dimensions
Nominal diameters Outer diameter
- CORRECT
1/25~1/100 Down Slope
Common Drain Piping
• When the common drain piping is connected with other units, the con-
nected position of each KPI unit must be higher than the common
piping. The pipe size of the common drain pipe must be large enough
according to the unit size and number of unit.
4
d
(1/4) 6.35
(3/8) 9.53
(1/2) 12.70
(5/8) 15.88
(1/4) 6.35
(3/8) 9.53
(1/2) 12.70
(5/8) 15.88
Drain Piping connection
A
Ø +0/-0.4
9.1
13.2
16.6
19.7
B
17
22
26
29