Panasonic Urban Multi MX1 Series Manual page 24

Installation 1
Piping Diameter for
Grouped Drain
Pipes
1. Relationship between horizontal pipe diameter and allowable drainage (for extended ventilation system)
JIS nominal
Notes:
2. Relationship between riser diameter and allowable drainage (for extended ventilation system)
JIS nominal
Notes:
3.2.5 Drain Piping for Each Model
2-Way Cassette
1. Rig drain piping
Type (CS-LM)
24
Select piping diameter from the below table in accordance with the amount of condensation drained by
all units with a common drain pipe.
Consider 2 l/hr of drainage for every 1 HP. For example, drainage from 3 units running at 2 HP and 2
units running at 3 HP is calculated as follows.
2 (l/hr) × 2 (HP) × 3 (units) + 2 (l/hr) × 3 (HP) × 2 (units) = 24 l/hr
Vinyl chloride pipe
diameter (mm)
VP20 20
VP25 25
VP30 31
VP40 40
VP50 51
Calculations have been made with water area inside the pipe as 10%.
Allowable flow rate figures below the decimal have been discarded.
Use VP30 or larger pipe after the convergence point.
Vinyl chloride pipe
diameter (mm)
VP20 20
VP25 25
VP30 31
VP40 40
VP50 51
VP65 67
VP75 77
Allowed flow rate figures below the decimal have been discarded.
Use VP30 or larger pipe in risers.
Use the same drain pipe for the humidifier as the indoor unit.
The diameter of the drain pipe should be greater than or equal to the diameter of the connecting pipe
(vinyl tube; pipe size: 25mm; outer dimension: 32mm).
Keep the drain pipe short and sloping downwards at a gradient of at least 1/100 to prevent air pockets
from forming.
If the drain hose cannot be sufficiently set on a slope, execute the drain raising piping.
To keep the drain hose from sagging, space hanging wires every 1 to 1.5 m.
Use the attached drain hose and clamp metal.
Insert the drain hose into the drain socket, up to the white tape. Tighten the clamp until the screw head
is less than 4 mm from the hose.
Wrap the attached sealing pad over the clamp and drain hose to insulate.
Allowable flow rate (l/hr)
Piping gradient 1:50 Piping gradient 1:100
39
70
125
247
473
Allowable flow rate
(l/hr)
220
(Reference value) Cannot
be used in grouped piping.
410
730
1440
Can be used in grouped
2760
piping.
5710
8280
PACD011001G2 / PACD011004G3
Remarks
27
(Reference value) Cannot
be used in grouped piping.
50
88
Can be used in grouped
175
piping.
334
Remarks
Urban Multi Inverter "MX1" Series