Electrical Wiring - Riello RESIDENCE HM Series Instructions For The User

MINIMUM DISTANCES FOR CABINET INSTALLATION
- Observe a safe distance between the wall on which the boiler is in-
stalled and hot parts outside it.
5mm
CLOSET INSTALLATION
4.3 Instructions for the condensate discharge
connection
This product is designed to prevent the escape of flue gaseous
through the condensate drainage pipe with which it is equipped; this
is achieved through the use of a special drain-trap located inside the
appliance.
b
All the components of the condensate drainage system must
be correctly serviced as per the manufacturer's indications,
and must not be modified in any way.
The condensate drain outlet system downstream from the appliance
must be made in accordance with the relevant legislation and
regulations in force; this is the responsibility of the installer. The system
must be sized and installed so as to ensure the correct evacuation
of the condensate produced by the appliance and/or collected by the
flue gas evacuation systems. All the system components must be
made to the highest standards, using materials able to withstand the
long-term mechanical, thermal and chemical stress created by the
condensate.
Note: if the condensate drain outlet system is exposed to the risk
of freezing temperatures, always ensure a suitable level of pipe
insulation and consider increasing the diameter of the pipe itself.
The pipe must slope sufficiently to prevent the condensate from
stagnating and guarantee it is correctly drained off. There must be an
examinable disconnection between the condensate drain outlet pipe
of the appliance and the condensate drain outlet system.
4.4 Access to electrical parts
4.5

Electrical wiring

Low voltage connections
Make the low voltage connections as follows:
ƒ use the connectors supplied:
ƒ ModBus 4-pole connector for the BUS 485 signal (- A B +)
ƒ 8-pole connector for TBT - TA - OT+ - SE signals
ModBus connector
CE4
TBT
- A B +
BACK
TOP VIEW
5mm
Removable connector
CE8
TA OT+ SE
use voltage free contact input Utilizzare contatto privo di tensione
CE4 (- A B +) Bus 485
TBT Low temperature thermostat
Room thermostat
TA
(contact without voltage)
CE8
OT+ Open therm
SE Outdoor temperature sensor
ƒ make the electrical connections using the desired connector as
shown in the detail drawing
ƒ after making the connections, insert the connector in its counterpart.
b
It is recommended to use conductors with wire cross-sections
from a minimum of 0.35mm
nect the BUS 485 it is recommended to use the shielded cable
if the signal passes near other electrical conductors or mains
voltage conductors (230V).
b
In case of a TA or TBT connection, remove the relative jumpers
on the terminal board.
TERM.BOLL. or SONDA BOLL. connection
To connect water tank thermostat and water tank probe access the boiler
board card as follows:
- remove the casing (see "4.7 Removing the casing")
- access the boiler board card (see "4.4 Access to electrical parts")
- connect TERM.BOLL. and SONDA BOLL. to M4 as shown in the figure.
1
TERM.BOLL. SONDA 3
o POS BOLL.
M4
11
X14
NOTE: when connecting an OT+ remote control to the system, if
the parameter P803= 1 (SERVICE), the boiler display shows the
following screen:
Please note that, if OT+ remote control connected:
- it is no longer possible to set the boiler OFF/WINTER/SUMMER status
(which can now be set via the OT+ remote control)
- the heating setpoint value calculated by remote control OT+ (I017) is
displayed in the INFO menu
- it is only possible to set the heating setpoint in the boiler if P311=1
or P311 = 0 and jumper closed. The value can be seen in the INFO
menu (I016)
- to activate the COMBUSTION ANALYSIS function, with OT+ remote
control connected, the connection must be temporarily disabled by
setting the parameter P803 = 0 (SERVICE); remember to reset the
value of this parameter after using the function.
Key 2 remains active for resetting the alarm.
Key 3 remains active for displaying the INFO menu and enabling the
SETTINGS menu.
8
to a maximum of 1.5mm
2
T.P.
LIN BUS
1
3
EN
TERM. BOLL. WATER TANK THER-
o POS MOSTAT or POS
SONDA WATER TANK
BOLL. PROBE
viola purple
rosso red
marrone brown
blu blue
nero black
verde green
1
. To con-
2