Immergas BCM Operating instructions

Instructions and
recommendations
Installer
Maintenance technician
IE BCM
Boiler controller
*1.042371ENG*
STD.005482/001

1 Generality ............................................................................3
2 Description..................................................................................4
3 Application ..........................................................................7
3.1 Programming the operation parameters ...................................8
3.2 BCM parameters (HSC) - General settings/
settings for use with HSCP..........................................................9
3.3 BCM Parameters (HSC) - General settings /
use settings with HSCP..............................................................12
3.4 Error code....................................................................................13
INDEX
STD.005482/001

3
Generality
1GENERALITY
e BCM unit is capable of acting:
- as a controller of a single boiler, checking the basic services of the
heating system, including the system’s safety devices.
- as an HCM (Heating Cascade Manager) controller, checking the
overall structure of several heat generators.
STD.005482/001

4
Description
5LOCAL CONNECTORS
for boiler/cascade management
N° Pin S.E. Description
A1
Internal boiler connections
7 14 SMG Global ow sensor
6 13 SRG Global return sensor
5 12 DK No water safety pressure switch
4 11 PG min. Min Gas pressure switch
3 10 SL Level sensor
2 9 PF Flue pressure switch
1 8 PF min Minimum ue pressure switch
Y1 Generator cascade connections
1 + Supp. Input 20 ÷ 40 Vdc
2 - GND
3 + eBUS
4 - GND
5 6 SMG Global ow sensor (duplicated).
6HOST CONNECTORS
to manage remote system
N° Pin S.E. Description
Y2
1
Modbus
A (PLC)
2 B (PLC)
3 eBUS + Ext. Cascade regulator
4 eBUS - GND
5
0-10V
C.P.M.
Modulating Pump Controller
6 GND - 0-10 V
7
Analogue input
0 - 10 V (*)
8
Stemp.
ACC Storage tank temperature sensor
9 Cong Programmable digital input:
Enable generator
10 FL Flow switch
11 INAIL Safety devices input (nc)
12 Inputs 9 ÷ 12 common
KEY
N° Description
AMANUAL request button
(Emergency activity) (*)
1
GREEN LED
OFF MANUAL request NOT active
ON MANUAL request active
BRELEASE button
2
RED LED
ON FAULT detected
FLASHING ANTIFREEZE protection activation
OFF Normal functioning
3
GREEN LED
ON CH heating operation or antifreeze protec-
tion active
FLASHING DHW demand operation
OFF Stand-by
4
YELLOW LED
ON BCM communication with local controllers
and remote BCM (cascade)
FLASHING BCM communication with local HSCP or
SHC controllers
OFF No communication with controllers (manual
request A)
(*) Active only if HSCP faulty or input 9 of Y2 (Cong) not enabled.
LED o.
2DESCRIPTION
STD.005482/001

5
123456
Y1
A
LIM. + 24 V
eBUS +
ALIM. - GND
eBUS -
GND
SMG
SMG
981011121314
SL
3
10
8
2
9
1
PF
11
4
2134567
A1
PF
min.
PG
min.
DK
12
5
13
6
SRG
14
7
SMG
INGR ANALOG.
ModbusA
0-10V
GND 0-10V - INGR.
Stemp. ACC
Config.
FL
C.P.M.
Y2
12 11 10 987654321
ModbusB
PLC
eBUS
eBUS +
E8
INAIL
INGR. COM ON/OFF
TA
0
1
2
3
4
5
6
7
8
9
Sw1
Description
(*) ANALOGUE INPUT
It is normally congured for control via EXTERNAL TEMPERATURE
CONTROL (PLC) 0-10 V. (If external HSCP is used, input 0-10 must
be congured).
SW1
Bus addresses 0 - 9 selector.
Normally set at 0 for external BCM (cascade controller).
In internal BCM (with single cascade boiler) it has other
values.
STD.005482/001

6
Y2
12 11 10 9876543
21
SE
Y2
12 11 10 9876543
21
P.
Mod.
C.P.M.
230 V
(-) GND
Y2
12 11 10 9876543
21
Stemp
ACC.
(-) GND
1
2
3
Y3
P. Ca
r.
DHW
P.
CH
230 V
N
L
1
2
3
Y3
COM. COMAND
P. Car. DHW
COMAND
P. CH
1
2
3
4
Y4
P.
Coll.
230 V
N
L
1
2
3
4
Y4
COMAND
P. Coll.
USC
ALLARM SIGNAL
Description
Y4 1
2 P. C o l l . Manifold pump
3 4 ALARM Alarm output
S.E. = WIRING DIAGRAM KEY
(see boiler booklet)
Y3
1COM. Common output
2P.Car.
DHW Storage tank load pump
3 P. CH Central heating pump
STD.005482/001

7
EMERGENCY
Application
Manual Emergency request at temperature SET POINT, by inserting
a resistance at the indicated value.
3APPLICATION
CASCADE MANAGER
• eBUS communication interface with SHC BMM modules
• Management of a cascade with a maximum of 8 boilers
• Global return temperature detection
• Global ow temperature - temperature limit - dierential temperature
detection.
• Six ON / OFF inputs for global protection sensors:
- FL minimum water ow rate
- PG min minimum gas pressure
- DK minimum water pressure
- PF ue gas 1 obstruction
- PF ue gas 2 obstruction
- SL water level sensor of the drain trap
• 0-10 V CPM Live output for modulating control of the manifold
pump.
• CONFIG. TA ON / OFF enabling input for the heat generator.
• Relay output for xed speed pump or for boiler status indication (in
demand or standby).
REMOTE CONTROL
• eBUS communication interface for higher level HCM.
• Modbus communication interface for integration with a building
automation system.
• Voltage input to interface with a commercial temperature controller.
• Relay contact output for the indication of the boiler alarm.
• ON/OFF input to reset alarm.
DHW MANAGEMENT
• Stemp ACC. Temperature sensor for DHW storage tank.
• COMMAND P.Car DHW Relay output for storage tank load pump.
CH MANAGEMENT
• ON / OFF input for CH demand.
• COMMAND P.CH Relay output for the direct ow.
STD.005482/001

8
thermostat
Application
3 - Device management SELECTION
Select with knob ‘‘C’’ and press key ‘‘A’’ in order to access the tech-
nical programming area of each device (you must enter password 0000).
4 - SELECTION
Select the parameter using knob ‘‘C’’.
Press ‘‘A’’ (selec).
5 - MODIFICATION
Rotate knob ‘‘C’’ to edit the value.
Press ‘‘A’’ (save).
3.1 PROGRAMMING THE OPERATION
PARAMETERS
ATTENTION!
Function reserved exclusively to Authorised Service
Centres.
1 - SELECTION
Use knob ‘‘C’’ to select the symbol . Press ‘‘A’’. Wait for scanning.
2 - Device management SELECTION
e display shows the status and the active sections of the system:
( - = inactive / 1 active)
• HCM (BCM cascade controller)
• SHC (multifunction module) optional
• BMM (burner management board)
Select the module using knob ‘‘C’’ and conrm by pressing ‘‘A’’.
STD.005482/001

9
Application
Code Symb. Value Description Factory setting
BCM use setting
with
HSCP
803 Srv Services enabled
19 CH heating + Antifreeze 19
18 Antifreeze
27 DHW + Antifreeze
1 Boiler control (read only)
16 Disabled 16
483 rP °K Temp. Max Dierential
0 Disabled
1 ÷ 500 Maximum Δ temperature (° C x 10) 0 0
34 HY °K Burner Hysteresis
50 ÷ 200 (°C x 10) 5 =
31 HL °C CH#1: Burner Minimum Setpoint
200 ÷ 400 350 =
39 HH °C CH#2: Burner Maximum Setpoint
450 ÷ 850 800 =
799 AC 0/10 V analogue input function:
0 Manual adjustment target temperature
1Outdoor temperature sensor 1
2 0 / 10 V Temperature control target 2
3 0 / 10 V Modulation control
376 DI1 Programmable Input #1
0 CH Service Enabling 0
1 Heat generator enabling 1
2 Reset alarms
322 Po min Pump Post-circulation
1 ÷ 10 5
341 PL V Minimum modulation outlet pump
0 ÷ 100 burner level V x 10 30
313 Pr V Maximum modulation outlet pump
0 ÷ 100 burner level V x 10 100
792 CHP % Central heating: Maximum modulation
0 ÷ 100 100
611 POT °K Gen: Err. Max. Parallel
0/1 ÷ 30 5
612 POL % Gen: Mod. Max. Parallel
0 ÷ 100 0
3.2 BCM PARAMETERS HSC  GENERAL SETTINGS/SETTINGS FOR USE WITH HSCP
STD.005482/001

10
Application
Code Symb. Value Description Factory setting
BCM use setting
with
HSCP
650 dL °C DHW: Minimum Setpoint
250 ÷ 450 350
385 dH °C DHW: Maximum Setpoint
500 ÷ 650 650
360 dt Storage tank adjustment
0 ÷ 15 0
656 drt °K DHW: Temp. Request Dierential
-20 ÷ 20 4
657 drH °K DHW: Request Temp. Hysteresis
1 ÷ 20 8
310 dpT sec. DHW Pump: Post-circulation
5 ÷ 600 60
660 dbT °C DHW: Temp. Boiler Maximum
50 ÷ 85 75
48 ChSet °C CH#1: Setpoint
20 ÷ 85 85
64 ChPO CH#1: Parallel Supply
0 ÷ 1 0
mC % Minimum % of burner modulation
0 ÷ 1000 (*) minimum modulation which determines switching o
burner, only cascade management (*)
600 mB Burners: Min. Inserted
1 ÷ 8 1
346 FL % Minimum Modulation
0 ÷ 100 25
616 BSt sec. Gen: Insertion Time
30 ÷ 900 120
613 BRt sec. Gen: Removal Time
30 ÷ 900 120
336 HS °C/min Temperature Gradient
1 ÷ 30 5
353 HP °K CH PID: Proportional
0 ÷ 50 25
354 HI °K CH PID: Integrative
0 ÷ 50 12
478 Hd °K CH PID: Derivative
0 ÷ 50 0
816 MI ModBus Address
0 ÷ 127 1
STD.005482/001

11
Application
Code Symb. Value Description Factory setting
BCM use setting
with
HSCP
817 MT sec. Timeout Modbus
0 ÷ 240 30
896 TU Unit temperature °C / °F
0 ÷ 1 0
309 St Application Code
0 Burner cascade
1 Single burners 1
368 VA1 Programmable Relay #1
0 Main pump control 0
1 Boiler status
369 VA2 Programmable Relay #2
0activated only if fault prevents
engagement of minimum burner number. 0
1 Activated by each boiler failure
771 PS Water Pressure Sensor
0 Not enabled 0
1 Enabled
768 LG Min. Gas Pressure Sens.
0 Not enabled 0
1 Enabled
793 COC Chimney Obstruction Sens.
0 Not enabled 0
1CO
2CO and COL
622 FS Minimum Flow Sensor
0÷7 Bitmap 0
1 Flow sensor enabled/Global Fault
3 Flow sensor enabled/Local Fault
5Flow sensor enabled/Global Fault
and Flow switch fault check
7Flow sensor enabled/Local Fault
and Flow switch fault check
Soware code (read only)
Soware revision (read only)
STD.005482/001

12
Application
Code Symb. Value Description
Factory setting
BCM use setting
with
HSCP
803 Srv Services enabled
19 CH heating + Antifreeze 19
18 Antifreeze
27 DHW + Antifreeze
1 Boiler control (read only)
16 Disabled 16
799 AC 0/10 V analogue input function:
0 Manual adjustment target temperature
1Outdoor temperature sensor 1
2 0 / 10 V Temperature control target 2
3 0 / 10 V Modulation control
376 DI1 Programmable Input #1
0 CH Service Enabling 0
1 Heat generator enabling 1
2 Reset alarms
3.3 BCM PARAMETERS HSC 
GENERAL SETTINGS /
USE SETTINGS WITH HSCP
e BCM received is factory preset for control via 0-10V in tempera-
ture. (Control via EXTERNAL TEMPERATURE CONTROL 0-10 V).
To enable the 0-10 V request, the contact must be closed between pin 12
and pin 9 with a jumper or with a command coming from the external
temperature control together with 0-10.
Also jumper pin 12 and 11 (ISPESL alarm input) or use it to manage
the system’s safety devices, with the contact open, all the generators are
switched o with alarm triggering.
When using the BCM coupled with HSCP, the fol-
lowing parameters must be modied (parag. 3.1).
Connecting a storage tank probe, Stemp ACC, in automatic mode, the
parameter 803 Srv assumes the value 27 and the system re-congu-
ration is requested on HSCP (actually saving the new conguration).
STD.005482/001

13
thermostat
thermostat
Application
CODE DESCRIPTION
detected on BCM (HSC) REMEDIES
9EXTERNAL PROBE (SE)
Enabled but not connected
Eect: No OTC
RESET: MANUAL / AUTO
13
DHW SENSOR
(S.acc DHW)
DHW sensor failure
Eect: DHW service is not active
RESET: AUTO
Check eciency of the sensor (see Res/Temp table) or its connections.
39 USER PARAMETERS CORRUPTED by
electromagnetic interferences
Eect: none
RESET: AUTO
56 THE HSCP remote control is connected but
not detected.
It is possible to activate the ignition of the burner by means of the BCM manu-
al request button (A)
02
GAS PRESSURE SWITCH
Gas pressure insucient if the parameter
LG = 1
Eect: stop
RESET: AUTO
e ignition procedure is prevented until the gas pressure has reached the
correct values.
57 BMM BOARD NOT DETECTED
Eect: stop
RESET: AUTO
Check electrical connections BMM e-BUS1
29 WATER IN THE COMBUSTION
CHAMBER
Eect: stop
RESET: AUTO
18
MAXIMUM PROTECTION ∆T
FLOWRETURN
Eect: Stop burner, Pump on maximum
speed.
RESET: AUTO
Circulation control, check installation
19
FLOW TEMPERATURE RISE.
It is activated when the ow temperature is
> 95. It is automatically restored when the
temperature is < 80.
Eect: Stop burner, Pump on maximum
speed.
Circulation control
14 RETURN PROBE
Auxiliary (SRG) sensor interrupted Check the wiring; if necessary, replace the auxiliary sensor
It is possible to reset the boiler by pressing “A” from HSCP or RESET
from BCM.
3.4 ERROR CODE
When the boiler detects a fault, the alarm symbol is displayed on the
screen together with the relative error code and description.
STD.005482/001

14
Application
CODE DESCRIPTION
detected on BCM (HSC) REMEDIES
40
MINIMUM WATER FLOW RATE (DK)
e main water ow is not detected by DK
within 20’’ aer activation of the pump.
It is enabled if the parameter
FS = 1, 2 or 3 ..
If FS.1 = 0,
Eect: Burner stop
RESET: AUTO
Circulation control, check
installation
73
NO WATER PRESSURE SWITCH
Fault is controlled only if the parameter FS
2 = 1.
It is detected if the input DK is active for
more than 20“ aer deactivation of the
pump.
Eect: Burner stop
RESET: AUTO
Circulation control, check
installation
08
NO WATER
Insucient water pressure and consequent
triggering of pressure switch of minimum
water pressure (DK).
Eect: Burner stop
RESET: AUTO
17
HEAT EXCHANGER FREEZING
Heat exchanger freezing detection. If the
central heating sensor detects temperature
below 2° C, burner ignition is prevented un-
til the sensor detects temperature above 5°C.
Eect: Burner stop, Pump active for 5 ‘ at
maximum speed to receive heat from the
pump.
RESET: AUTO
58 FLOW SENSOR SGM
Eect: Burner OFF.
RESET: AUTO
Detected only if more than 1 BMM is connected (cascade application).
28
CLOGGED DRAINS
Detected by the CO sensor if enabled by the
parameter COC = 1 or 2.
If COC = 2, the COL sensor is controlled to
detect obstruction of the chimney in low air
ow rate conditions.
It is controlled when only1 burner switches
on.
If the chimney is obstructed, the code is
automatically cancelled aer 10‘.
Eect:
burner o.
RESET: MANUAL
Check Chimneys / Check drain trap.
93
SAFETY PROTECTION: Triggering of
INAIL safety devices, or, if missing, jumper
open (Y2-11/12)
Eect: Burner stop and pump stop
RESET: MANUAL (aer having released individual safety devices).
30 SERVICE PARAMETERS CORRUPTED
by electromagnetic interferences
Eect: Burner ignition inhibited
RESET: MANUAL
38 DEFAULT PARAMETERS CORRUPTED
by electromagnetic interferences
Eect: Burner ignition inhibited
RESET: MANUAL
37 DEFECTIVE PARAMETERS MEMORY
Eect: Burner ignition inhibited RESET: MANUAL
STD.005482/001

15
STD.005482/001

immergas.com
Immergas S.p.A.
42041 Brescello (RE) - Italy
Tel. [phone]
Fax [phone]
Certied company ISO 9001
is instruction booklet is made of ecological paper. Code 1.042371ENG - rev. ST.003740/001 - 10/18 - Inglese per IRLANDA (IE)
STD.005482/001