Electrical Connections; Gas Connection - Riello RESIDENCE KIS Installer And User Manual

RESIDENCE
3.9 Positioning the wall-mounted boiler and hydraulic
connections (Fig. 10)
The boiler comes as standard with a boiler support plate. The position and dimension of hydraulic
fittings are shown in the detail drawing.
For the assembly, proceed as follows:
- fasten the boiler support plate (F) to the wall and use a spirit level to make sure it is perfectly
horizontal
- mark the 4 holes (ø 6 mm) envisaged for securing the boiler support plate (F)
- make sure that all measurements are exact, then drill the wall using drill tips with the diame-
ters indicated above
- fix the plate with the built-in template (G) to the wall.
- fix the safety valve pipe supplied in the documentation envelope onto the coupling of the
safety valve (S), then connect it to an adequate discharge system.
Make the hydraulic connections:
M heating delivery
AC hot water outlet
G
gas
R heating return line
AF cold water inlet
S safety valve
3.10

Electrical connections

Low voltage connections
Make the low voltage connections as follows:
ƒ use connectors supplied as standard:
ƒ 4-poles ModBus connector for BUS 485 (- A B +)
ƒ 8-poles connector for TBT - TA - OT+ - SE
CE4
- A B +
CE8
TBT
TA
Utilizzare contatto privo di tensione
CE4 (- A B +) Bus 485
CE8 TBT Low temperature limit thermostat
TA Room thermostat (voltage free contact input)
OT+ Open therm
SE Outdoor temperature sensor
bianco white
nero black
ƒ carry out the electrical wiring connections using the desired connector as shown in the de-
tailed drawing
ƒ once the electrical wiring connections have been made, correctly insert the connector into
its counterpart.
b
We recommend using conductors with a section no larger than 0,5 mm2.
b
In the event of TA or TBT connection, remove the related jumpers on the terminal board.
b
If the low voltage electrical connection box is not connected the boiler does not ignite.
CE8
CE4
6
3/4" M
1/2" M
3/4" M
3/4" M
1/2" M
1/2" M
OT+ SE
Voltage free contact input
OTBus remote control connection
When an OTBus remote control is connected to the system, the boiler display shows the fol-
lowing screen:
In particular on the boiler display:
ƒ it is no longer possible to set the boiler OFF/WINTER/SUMMER status (it is set by the OTBus
remote control)
ƒ it is no longer possible to set the domestic hot water setpoint (it is set by the OTBus remote
control)
ƒ the combination of the A+B keys remains active for the setting of the DOMESTIC HOT WA-
TER COMFORT function
ƒ the domestic hot water setpoint is displayed in the INFO menu
ƒ the heating setpoint set on the boiler display is used only if there are heat requests from the
TA and the OTBus remote control does not have a request if the parameter:
ƒ P3.11 = 1
or
ƒ P3.11 = 0 and the jumper on 1-2pin of X 21 is closed.
ƒ to activate the COMBUSTION CHECK function with an OTBus remote control connected,
you must temporarily disable the connection by setting the parameter P8.03 = 0. Remember
to reset this parameter once the function has finished.
We can see that it is not possible, with the OTBus remote control connected, to change the
values of the parameter P4.12 and P4.23 from 0 to 1.
Note: an OTBus remote control cannot be connected if the system already has BE16 in-
terface boards. For the same reason it is not possible to connect BE16 boards if there is
already an OTBus device.
In this case the system gives the following error message: <<OTER>>.
High voltage connections
The connection to the mains supply must be made via a separation device with an omnipolar
opening of at least 3.5 mm (EN 60335/1 - category 3). The appliance works with alternating cur-
rent at 230 Volt/50 Hz, and is in compliance with Standard EN 60335-1. It is obligatory to make
the connection with a safe ground/earth, in compliance with current directives.
b
The installer is responsible for ensuring the appliance is suitably earthed; the manu-
facturer will not be liable for any damage resulting from an incorrect or absent earth
connection
b
It is also advisable to respect the phase-neutral connection (L-N).
b
The earth conductor must be a couple of cm longer than the others.
b
To create the seal of the boiler use a clamp and tighten it on the cable grommet used.
The boiler can operate with a phase-neutral or phase-phase (not floating) power supply.
It is forbidden to use gas and/or water pipes to earth electrical appliances.
Use the power cable supplied to connect the boiler to the mains power supply. If the power cable
has to be replaced, use a HAR H05V2V2-F, 3 x 0.75mm² cable, Ø max external 7 mm.
3.11

Gas connection

The connection of the gas supply must be carried out in compliance with current installation
standards. Before carrying out the connection, check that the type of gas is that for which the
appliance is set up.
3.12 Variable speed circulator
The modulating circulator function is active only in the heating function. In the switching of the
three-way on the domestic hot water, the circulator always operates at maximum speed. The
modulating circulator function applies only to the boiler circulator and not to circulators of any
external devices that are connected (e.g. relaunch circulator).
There are 4 management modes to choose from depending on the situations and the type of
system. Entering the P4 menu, parameter P4.05, it is possible to choose from:
VARIABLE SPEED CIRCULATOR WITH PROPORTIONAL MODE (41 <= P4.05 <= 100)
1
VARIABLE SPEED CIRCULATOR WITH CONSTANT ∆T MODE (2 <= P4.05 <= 40)
2
CIRCULATOR IN FIXED MAXIMUM SPEED MODE (P4.05 = 1)
3
EXCEPTIONAL USE OF A STANDARD CIRCULATOR WHOSE SPEED CANNOT BE RE-
4
GULATED (P4.05= 0)
VARIABLE SPEED CIRCULATOR WITH PROPORTIONAL MODE (41 <= P4.05 <= 100)
1
In this mode the boiler board determines which flow curve to be adopted for the instantaneous
output of the boiler .
VARIABLE SPEED CIRCULATOR WITH CONSTANT ∆T MODE (2 <= P4.05 <= 40)
2
In this mode the installer sets the ∆T value to be kept between delivery and return (e.g.: entering
a value= 10 la the speed of the circulator will change to have a system flow rate with the aim of
keeping the ∆T upstream and downstream heat exchanger of 10°C).
VARIABLE SPEED CIRCULATOR WITH FIXED MAXIMUM SPEED MODE (P4.05 = 1)
3
In this mode the circulator, when activated, always operates at maximum speed.
Used in high pressure drop systems where it is necessary to fully exploit the boiler discharge
head in order to provide sufficient circulation (system flow at maximum speed lower than 600
litres/hour).