Sime MURELLE EQUIPE 220 BOX ErP Instrucciones Originales página 19

2.11.3 Displaying and setting cascade
parameters
The parameters for Sime Murelle HE
boilers in a cascade can be displayed and
set in the same way as with single boilers
(see "Parameter setting and display" and
"List of parameters").
WARNINGS: For the cascade to function
correctly, the external temperature
sensor (SE) must be installed.
2.11.4 Routing the cascading boilers
CAUTION: Before changing "PAR 15"
(routing the cascade), the boilers in the
cascade must be set to WINTER mode.
On each boiler in the cascade, "PAR 15"
must be set as follows:
- "0" to identify the master boiler
- "1" to identify slave boiler no. 1
- "2" to identify slave boiler no. 2
- "3" to identify slave boiler no. 3
- "4" to identify slave boiler no. 4
- "5" to identify slave boiler no. 5
- "6" to identify slave boiler no. 6
- "7" to identify slave boiler no. 7
NOTE: Avoid labelling the slave boilers
with the same number.
CASCADE parameters for the master boile
Type No. Description
PAR A0 Choosing the cascade strategy
PAR A1 Number of boilers installed
PAR A2 Reset operating hours of boiler in cascade
PAR A3 Next boiler ignition threshold
PAR A4 Last ignited boiler shutdown threshold
PAR A5 Timeout for reaching the ignition threshold (time for PAR A3 check)
PAR A6 Timeout for reaching the shutdown threshold (time for PAR A4 check)
Offset for setpoint required from boilers for heating request (only for PAR A0 =
PAR A7
0 – fixed set)
2.11.5 CASCADE parameters for the
master boiler
After setting PAR 15 on the master boiler,
and where there are more than two boilers
in the cascade, access the CASCADE
parameters on the master boiler (identified
by PAR A plus a number as shown in the
table) and configure parameter PAR A1.
To access the CASCADE parameters:
L M
- press buttons and (~ 2s) at the
same time until the parameter menu
shows
L M
- press buttons and (~ 2s) at the
same time again until "--" appears on
the display
- to access the CASCADE parameters,
enter the following combinations of
Z N L M L
keys:
- to scroll through the parameters press
L M
buttons and
- to change the parameter settings,
Z N
press buttons and
- to exit the menu and go back to the
first screen, press one of the function
buttons, excluding RESET, or wait
approx. 60 seconds without pressing
any buttons.
2.11.6 Fault / malfunction codes
Every boiler in the cascade manages
its own faults as described in "Fault /
malfunction codes".
The faults that generate a lockout in a
specific boiler are reset by pressing the
RESET button on the relevant boiler.
A lockout in the master boiler is reset
either by pressing the RESET button or
from a remote device.
For the master and slave no. 1 boilers,
specific faults can be checked for as
shown in the table:
Type No.
ALL 31
ALL 35
. ALL 36
ALL 70
ALL 71
Range U/M
0 = fixed set
1 = dynamic
set
0......8
- - / 1
45 .....90
10 .....40
10 .....240 Sec
10 .....240 Sec
0......10
ENG
Description
Cascade delivery probe
(SMC) fault
Communication fault
with RS485 boards
Number of boilers
connected in cascade
fault
Cascade stop general
fault
General fault with a
boiler in the cascade
Step Default
- 0
1 2
- - -
% 1 70
% 1 30
1 120
1 180
°C - 0
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