Daikin RXQ18PY1 [55/355] Drain piping for each model

Daikin RXQ32PY1 [55/355] Drain piping for each model
SiEN34-705 Installation
General Information 49
Piping Diameter
for Grouped
Drain Pipes
! 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
1. Relationship between horizontal pipe diameter and allowable drainage (for extended
ventilation system)
Notes: ! 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.
2. Relationship between riser diameter and allowable drainage (for extended ventilation
system)
Notes: ! 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.
3.2.9 Drain Piping for Each Model
Ceiling Mounted
Cassette Type
(FXCQ-M Double
flow)
Drain Pump Kit
Drain Piping Work
〈〈Rig the drain pipe as shown below and take measures against condensation.
Improperly rigged piping could lead to leaks and eventually wet furniture and
belongings.〉〉
JIS nominal
Vinyl chloride pipe
diameter (mm)
Allowable flow rate (l/hr)
Remarks
Piping gradient 1:50 Piping gradient 1:100
VP20203927
(Reference value) Cannot
be used in grouped piping.
VP25257050
VP30 31 125 88
Can be used in grouped
piping.
VP40 40 247 175
VP50 51 473 334
JIS nominal
Vinyl chloride pipe
diameter (mm)
Allowable flow rate
(l/hr)
Remarks
VP20 20 220
(Reference value) Cannot
be used in grouped piping.
VP25 25 410
VP30 31 730
Can be used in grouped
piping.
VP40 40 1440
VP50 51 2760
VP65 67 5710
VP75 77 8280
Indoor unit Drain pump kit
FXCQ–M Standard (Equipped with indoor unit)

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