6 | Installation
64
M1820921_en | Installation instructions Dual fuel boiler SP Dual compact
6.10.1 Board overview
7
1
2
3
4
5
6
8
KM
HY
RL
Item
Designation
Item
Designation
1
Device connection terminal
5
Service interface
2
Main switch
6
Core module
3
Mains connection plug
7
Return mixer module (optional)
4
High-limit thermostat STL
8
Hydraulic module
PM
PE
DG
11
9
10
Item
Designation
Item
Designation
9
Digital module
11
Pellet module
10
Pellet module expansion
