Installation Manual

50
Y & S Plan system (2 pipes) (Hydraulic cylinder Flow and Return connections
capped off at the boiler)
• Connect the required permanent live
supply to plug 40 as combination boiler.
• An external independent twin channel
remote timer is used.
• The Vitotronic HC2 integral timer must
be set to constant operation.
• The switched live supply from Y & S
plan electrical configurations (that con-
trols the pump and boiler) is connected
to plug 96 terminal 1.
• The Viessmann low voltage DHW
sensor must not be fitted, this means
the 3 port valve integral to the boiler
will remain open correctly.
• Vitotrol 100 UTA/D external controls are
not compatible.
• Control heating & DHW via external
independent timer.
Heating only system (2 pipes)
• Connect the required permanent live
supply to plug 40 as previous page.
• Connect room thermostat to plug 96 as
combination boiler.
• The Viessmann low voltage DHW
sensor must not be fitted, this means
the 3 port valve integral to the boiler
will remain open correctly.
• Time heating via integral Vitotronic HC2
control.
• A Vitotrol 100 UTA/D can be connected
to plug 96, however the integral
Vitotronic HC2 7 day controller would
require the central heating to be set to
permanently on, please refer to user
guide.
5350 485 GB 08/2007
Vitoden 200-W pages 44 - 4/9/07 7:56 pm Page 7