Riello Residence Condens IS n, Installer And User Manual

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Residence Condens IS n
10
ENGLISH
11
- turn off the fuel and water taps of the heating and domestic hot
water system.
In this case, the anti-freeze and anti-blocking systems are de-
activated. Drain the heating and domestic water system if there
is any risk of freezing.
4.5 Circulator setting
Circulator residual discharge head
The boiler is equipped with a high efficiency modulating circulator
that is already hydraulically and electrically connected, the available
performance of which are shown in the graph "Constant residual dis-
charge head curve".
The circulator is factory set with discharge head of 6 meters.
The boiler is equipped with an anti-blocking system which starts up
an operation cycle after every 24 hours of stop, with the mode selec-
tor in any position.
The "anti-locking" function is only activated when the boiler is
electrically powered.
It is strictly forbidden to operate the circulator without water.
Where there is the need to use a different curve, the desired level can
be selected on the circulator.
The main characteristics and how to set the desired operation are
described below.
User interface
The user interface comprises a button (A), a red/green bi-colour LED
(B) and four yellow LEDs (C) in line (fig. R).
fig. R
The user interface allows to view the operating performance (oper-
ating status and alarm status) and set the operating mode of the
circulator.
The performance, indicated by LEDs (B) and (C) are always visible
during the normal operation of the circulator, while the settings are
made by pressing button (A) (fig. R).
Indication of the operating status
When the circulator is operating, LED (B) is green (fig. R). The four
yellow LEDs (C) indicate the consumption of electric power (P1) as
shown in the following table
LED status CIRCULATOR status
Consumption in
% of P1 MAX (*)
Green LED on +
1 yellow LED on
Minimum operation 0÷25
Green LED on +
2 yellow LEDs on
Minimum-medium
operation
25÷50
Green LED on +
3 yellow LEDs on
Medium-maximum
operation
50÷75
Green LED on +
4 yellow LEDs on
Maximum operation 100
(*) For the output (P1) absorbed by the circulator, refer to that indicat-
ed in the “Technical Data” table.
Indication of the alarm status
If the circulator has detected one or more alarms the bi-colour LED
(B) is red (fig. R). The four yellow LEDs (C) indicate the type of alarm
as shown in the following table.
LED status
ALARM
description
Status
CIRCULATOR
Possible
REMEDY
Red LED
on +
1 Yellow LED
on (LED 5)
The crankshaft
is blocked
Start attempt
every 1.5
seconds
Wait or unblock
the crankshaft
Red LED
on +
1 yellow LED
on (LED 4)
Low input
voltage
Warning only.
The circulator
continues to
operate
Check the
input voltage
LED status
ALARM
description
Status
CIRCULATOR
Possible
REMEDY
Red LED
on +
1 yellow LED
on (LED 3)
Electrical power
supply failure or
circulator fault
The circulator
has stopped
Check the
electrical supply
or replace the
circulator
If there are multiple alarms, the circulator displays the highest
priority alarm only.
Display of the active settings
With the circulator powered, the active configuration of the circulator
can be viewed (fig. R) by briefly pressing the button (A). The LEDs
indicate the active settings.
No change to the configuration of the circulator can be made at this
stage. Two seconds after of pressing the button (A), the user inter-
face returns to the normal display of the operating status.
Key lock function
The key lock function is designed to prevent an accidental change of
settings or misuse of the circulator.
When the lock function is activated, the prolonged pressing of button
(A) is inhibited. This prevents the user from entering the setting sec-
tion of the circulator operating mode.
The enabling/disabling of the key lock function is made by pressing
button (A) for more than 10 seconds (fig. S). During this step, all
LEDs (C) flashes for 1 second.
fig. S
Variation of the operating mode
Display of operating status
Display of setting
Setting
In normal operation the circulator operates with the factory setting or
the last setting made.
To vary the configuration:
Make sure the key lock function is disabled.
Press button (A) for more than 2 seconds until the LEDs start blink-
ing. Pressing button (A) briefly within a period of no more than 10
seconds, the user interface will display the next settings. The various
settings available will appear in a cyclic sequence
By not pressing button (A) the last setting chosen is stored (fig. R).
Pressing button (A) allows to go back to the "display of the active
settings" and verify that LEDs (B) and (C) indicate, for 2 seconds, the
last setting made
By not pressing button (A) for more than 2 seconds, the user inter-
face will "display the operating status".
The available settings are shown in figure T together with the relative
representation of LEDs (B) and (C).
.