Technical information | 4
M1820921_en | Installation instructions Dual fuel boiler SP Dual compact
19
4.2 Components and connections
1
2
3
4
5
6
7
8
9
10
Item
Description
SP Dual compact 15-20
1
Boiler flow connection
1” IT
2
Boiler return connection
1” IT
3
Drainage connection
1/2“ IT
4
Safety heat exchanger connection
1/2“ IT
5
Immersion sleeve sensor connection for thermal discharge valve (installed by the
customer)
1/2“ IT
6
Flue gas pipe connection (external diameter)
129 mm
7
Position for boiler sensor and STL capillary (internal diameter)
16 mm
8
Position for Lambda probe
3/4" IT
9
Position for flue gas temperature sensor
1/2“ IT
10
Pipe union
1)
- Pellet unit outfeed to firewood boiler return
1“
1. Included in delivery
