5
11.2
H
EATING
.............................................................................................................................................84
11.2.1
Controlling behaviour settings ................................................................................................................................. 84
11.2.2
Room thermostat on/off ........................................................................................................................................... 84
11.2.3
Room thermostat OPENTHERM ............................................................................................................................. 85
11.2.4
Outside temperature related flow control ................................................................................................................ 85
11.2.5
0-10 VDC remote flow temperature set point .......................................................................................................... 85
11.2.6
0-10 VDC remote burner input control .................................................................................................................... 86
11.2.7
timer contact function .............................................................................................................................................. 86
11.3
I
NDIRECT HOT WATER
/
CALORIFIER
.......................................................................................................87
11.3.1
pump and 3-way valve control ................................................................................................................................ 87
11.3.2
tank thermostat ....................................................................................................................................................... 87
11.3.3
tank sensor .............................................................................................................................................................. 87
11.3.4
Low/high flow temperature to tank coil .................................................................................................................... 88
11.3.5
Heating and hot water switching time ..................................................................................................................... 89
11.3.6
Heating and hot water switching time at a sudden temperature drop ..................................................................... 89
11.3.7
anti-
Legionnaires’ disease (pasteurisation) function
............................................................................................... 90
11.4
C
ASCADE CONTROL
.............................................................................................................................91
11.4.1
Parameter settings for cascaded boilers ................................................................................................................. 91
11.4.2
Monitor screens ....................................................................................................................................................... 93
11.4.3
Output control and burner sequence ....................................................................................................................... 93
12
COMMISSIONING THE BOILER .............................................................................................................94
12.1
F
IRST
:
FLUSHING THE BOILER WITH WATER
............................................................................................94
12.2
S
ECOND
:
FILLING
&
VENTING THE BOILER AND THE SYSTEM
....................................................................94
12.3
T
HIRD
:
CHECK THE WATER FLOW
..........................................................................................................94
13
STARTING THE BOILER .........................................................................................................................96
13.1
G
ENERAL
............................................................................................................................................96
13.2
F
IRING FOR THE FIRST TIME
..................................................................................................................97
14
ADJUSTING AND SETTING THE BURNERS .........................................................................................98
14.1
I
NTRODUCTION
....................................................................................................................................98
14.1.1
Adjustment tables .................................................................................................................................................... 98
14.1.2
Adjustment values ................................................................................................................................................... 98
14.1.3
Gas valve setting screws: drawing ........................................................................................................................ 100
14.1.4
How to remove and mount the flue plug: .............................................................................................................. 101
14.1.5
Adjustment actions: general scheme .................................................................................................................... 102
14.1.6
Note: CO
2
measuring position ............................................................................................................................... 103
14.2
A
DJUSTING IN CASE OF A NEW BOILER
,
OR AFTER MAINTENANCE
(
CASE
A) ............................................103
14.2.1
General remark ..................................................................................................................................................... 103
14.2.2
Checking and adjusting the bottom burner ........................................................................................................... 104
14.2.3
Checking both burners .......................................................................................................................................... 104
14.3
A
DJUSTING AFTER GAS VALVE REPLACEMENT OR IN CASE OF GAS CONVERSION
(
CASE
B) ......................105
14.3.1
General remarks ................................................................................................................................................... 105
14.3.2
Case B adjustments .............................................................................................................................................. 105
14.3.3
Setting parameter P4BD gas type (display D8) .................................................................................................... 106
15
PUTTING THE BOILER OUT OF OPERATION ....................................................................................107
16
FAULT CODES, BLOCKING CODES ...................................................................................................108
16.1
F
AULT CODES
....................................................................................................................................108
16.2
B
LOCKING CODES
..............................................................................................................................115
16.3
M
AINTENANCE ATTENTION MESSAGE
...................................................................................................119
17
MAINTENANCE ......................................................................................................................................120
17.1
G
ENERAL
..........................................................................................................................................120
17.2
I
NSPECTION
&
MAINTENANCE
..............................................................................................................120
18
USER INSTRUCTIONS ..........................................................................................................................123
19
EXAMPLES OF INSTALLATIONS ........................................................................................................124
