Systems/Applications - Theben RAMSES 856 Installation And Operating Manual

Systems/Applications 1–5
• For the systems or applications 1-4 the OT-Box RAMSES top2
OT is required. The OpenTherm bus links RAMSES 850 top2 OT
with the OT box RAMSES top2 OT.
• System 5 requires 2 OT boxes (centre box and end box),
RAMSES 850 top2 OT with 2-wire connection to 1 box
OT
RAMSES 850 top2 OT with 2-wire connection to 2 boxes
Centre box
OT
which are linked via the OpenTherm bus. RAMSES 850 top2
OT as well as both boxes are linked with one another via the
OpenTherm bus. The centre box must be linked to the 0–10 V
(terminal 15 - 15) input with a wire bridge.
With the RAMSES 856 top2 OT an additional OT box (standard
box 9070712) will be required for this system.
End box
*
Input
0–10 V
OT
9
GB
*
Wire bridge