Guidelines When Connecting The Condensate Piping - Daikin D2C20ND028A5AA Manuel D'installation

Symbols:
Item
Option
Wiring depending on model
Switch box
PCB
X4M Main terminal
Earth wiring
15
Wire number 15
Field supply
1
Several wiring possibilities
Legend:
Part Connector
PCB1 —
PCB2 X3
PCB3 X9
P1 X2-X11
F1 X1-X11
GV1 X11
IT1 X1
3WV1 X13
WPS1 X4
DHW FS1 X4
IE1 X5
K1 X2M
K2 X2M
HE1 X11
NTC1 X1M
NTC2 X4
NTC3 X4
NTC4 X4
NTC5 X4
NTC5 X1M
NTC6 X1M
Ext1 X8
Ext2 X10
Ext3 X1M
Ext4 X2M
Ext5 X2M
X1M X4-X11-X12
X2M X1-X2
D2C20ND028A5AA + D2C24ND035A5AA
Wall-mounted condensing boiler
3P469346-10J – 2018.05
Description
Description
Main PCB
Status indicator PCB
LAN (var iCAN) adapter
Boiler pump
Fan
Gas valve
Ignition transformer
Central heating / domestic hot
water diverter valve stepper
motor
Water pressure sensor
Domestic hot water flow sensor
(for models D2C*)
Ionisation input
Reserved, not in use
On/OFF room thermostat
Overheat thermostat
Outdoor temperature sensor
Flow temperature sensor
Return temperature sensor
Flue temperature sensor
Domestic hot water temperature
sensor
(for models D2C*)
Not in use
Solar domestic hot water
temperature sensor
BCC (Boiler Chip Card)
Personal computer production
interface
Daikin room thermostat
External power output
(230 V AC)
Reserved, not in use
Low voltage terminal strip
High voltage terminal strip
4.8.7 Guidelines when connecting the
condensate piping
DANGER
In order to prevent escape of flue gases and so poisoning,
the condensate trap must be mounted to its place before
commissioning.
Condensate trap must be connected to a drain via an open
connection.
Precautions that should be taken about condensate piping are:
▪ Horizontal pipe runs must fall a minimum of 45 mm/metre.
▪ External piping should be kept as short as possible or thermally
insulated to prevent freezing, depending on the installation winter
climate condition.
▪ Make sure that the condensate disposal system, the piping, and
the fittings are made of acid resistant material like plastics.
WARNING
The condensate trap outlet shall not be modified or
blocked.
CAUTION
The condensate discharge piping diameter must be large
enough so as not to restrain the condensate water flow.
WARNING
If the discharge pipe is located outdoors, take measures
against frost.
4 Installation
Installation manual
15