5.2 LIMITING BOILER MAXIMUM OUTPUT
The boiler is supplied for operation on maximum heat output of 15kW or 18 kW depending of the model. The output can
be rated below this maximum to match the heat load required. The setting is realized modifying P03 parameter. See "5.1.
INSTALLATIONS PARAMETERS".
WARNING: ON INSTALLATIONS WHERE THE INCOMING POWER SUPPLY IS NOT CAPABLE OF
MAXIMUM LOAD THE BOILER CONTROL MUST BE RE-CONFIGURED TO LIMIT THE OUTPUT BEFORE SWITCHING
ON.
As the output for Domestic Hot Water will also be limited to the same level it is recommended to adjust to the highest
output possible so as to maintain the best hot water performance.
The boiler will not exceed this pre-set maximum but will still modulate in heating mode up to this level, adapting to demand
and ensuring economic operation.
Correct configuration for the selected output can be checked on the boiler display panel following the procedure shown in
"7.4 CHECKING RATED HEAT OUTPUT".
CAUTION: It is essential to confirm the power output with the use of a clamp meter
LIMITATION OF OUTPUT ON MODELS MATTIRA SYSTEM CMX18i
Maximum
MAXIMUM
output
CURRENT
limited to:
L1
18kW
26.0A
15kW
26.0A
12kW
26.0A
9kW
13.0A
6kW
13.0A
3kW
13.0A
CONNECTION THREE-PHASE 3x400V~+N
LIMITATION OF OUTPUT ON MODELS MATTIRA SYSTEM CMX15i
Maximum
MAXIMUM
output
CURRENT
limited to:
L1
15kW
21.7A
13kW
21.7A
12kW
8.7A
11kW
21.7A
10kW
13.0A
9kW
13.0A
8kW
13.0A
7kW
8.7A
6kW
8.7A
5kW
8.7A
4kW
-
3kW
13.0A
2kW
-
CONNECTION THREE-PHASE 3x400V~+N
* The standard configuration of the boiler only allows a maximum of 12kW when connected SINGLE-PHASE 230V~.
MAXIMUM
MAXIMUM
CURRENT
CURRENT
L2
L3
26.0A
26.0A
26.0A
13.0A
13.0A
13.0A
13.0A
13.0A
13.0A
-
-
-
MAXIMUM
MAXIMUM
CURRENT
CURRENT
L2
L3
21.7A
21.7A
21.7A
13.0A
21.7A
21.7A
13.0A
13.0A
8.7A
21.7A
13.0A
13.0A
8.7A
13.0A
13.0A
8.7A
8.7A
8.7A
13.0A
-
8.7A
8.7A
-
-
-
8.7A
Maximum
output
limited to:
18kW*
15kW*
12kW
9kW
6kW
3kW
CONNECTION SINGLE PHASE 230V~
Maximum
output
limited to:
15kW*
13kW*
12kW
11kW
10kW
9kW
8kW
7kW
6kW
5kW
4kW
3kW
2kW
CONNECTION SINGLE PHASE 230V~
33
MAXIMUM
CURRENT
78.3A*
65.2A*
52.2A
39.1A
26.1A
13.0A
MAXIMUM
CURRENT
65.2A*
56.5A*
52.2A
47.8A
43.5A
39.1A
34.8A
30.4A
26.1A
21.7A
17.4A
13.0A
8.7A