- 18 -
- 19 -
2-8 Cascade Installation (Only For Model 26)
• This type of installation allows two units to operate together by connecting two units with
a 2-wire cable and some simple programming.
• The units will operate in a range between 25 MJ/h and 400 MJ/h when two units are
connected together.
• Depending on water flow and desired temperature, the system can automatically
operate or stop either or both units.
• Thermann genuine cascade cable can be used to connected the two units.
• The distance between the two units must be in the range of 5 -100 cm.
• Water and gas pipe length should be the same to both units. Otherwise the temperature
of the hot water at the tap can be unstable.
• In case of connecting the remote controller, it must be connected with the MASTER of
the two units. Otherwise the remote controller will not operate correctly.
Remote
Controller
Remote Controller
Connection Terminals
Thermann genuine
cascade cable
Gas Supply
Hot Water Supply Line
Cold Water Supply Line
PCB
(5-100cm)
the MASTER unit
the SLAVE unit
PCB
• In case that three remote controllers are connected,
two (small and large) cable clamps shall be used.
CONTROLLER CABLE
CABLE CLAMP (Small)
REMOTE CONTROLLER
CONNECTION TERMINALS
CABLE CLAMP (Large)
CASCADE CABLE
(Maximum Four Cables)
