Rotex R2TND012A4AA, Руководство по установке

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4 Installation
Installation manual
16
R2CND0 R2TND012~024A4AA
Wall-mounted condensing boiler
3P469346-4E – 2017.07
Symbols:
Item Description
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 Description
PCB1 — Main PCB
PCB2 X3 Status indicator PCB
PCB3 X9 LAN (var iCAN) adapter
P1 X2-X11 Boiler pump
F1 X1-X11 Fan
GV1 X11 Gas valve
IT1 X1 Ignition transformer
3WV1 X13 Central heating / domestic hot
water diverter valve stepper
motor
WPS1 X4 Water pressure sensor
DHW FS1 X4 Domestic hot water flow sensor
(for models R2CND024A4AA)
IE1 X5 Ionisation input
K1 X2M Solar stop contact
K2 X2M On/OFF room thermostat
HE1 X11 Overheat thermostat
NTC1 X1M Outdoor temperature sensor
NTC2 X4 Flow temperature sensor
NTC3 X4 Return temperature sensor
NTC4 X4 Flue temperature sensor
NTC5 X4 Domestic hot water temperature
sensor
(for models R2CND024A4AA)
NTC5 X1M Domestic hot water storage tank
sensor
(for models R2TND012A4AA,
R2TND018A4AA and
R2TND024A4AA)
NTC6 X1M Solar domestic hot water
temperature sensor
Ext1 X8 BCC (Boiler Chip Card)
Ext2 X10 Personal computer production
interface
Ext3 X1M Opentherm room thermostat
Ext4 X2M External power output
(230 V AC)
Ext5 X2M Reserved, not in use
X1M X4-X11-X12 Low voltage terminal strip
X2M X1-X2 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.
4.8.8 Guidelines for condensate piping
termination
Condensate piping can be connected to a termination in different
ways shown below:
Terminating into an internal soil and vent stack
b a
≥450 mm
a Air breaker
b Internal soil and vent stack
Terminating into an external waste system
a