Installation Instructions

Single zone
The evohome Controller is the sensor for the whole home which
is controlled to the same time and temperature schedule.
This system also includes wireless connectivity,
which is available for any configuration.
Honeywell S plan 2 two-port valves
There are two zone valves − one for stored hot water
one for central heating. The evohome Controller is the
sensor for the whole home which is controlled to the same
time and temperature schedule. The valves open when
needed. The boiler is operated via a wired junction box.
Pump
DWH Heating
Radiators
DWH Cylinder
BOILER
Junction
Box
BDR91 BDR91
CS92A
V4043 V4043
evohome
Central Controller
BOILER
Radiators
Pump
BDR91
evohome
Central Controller
Figure 1 Single
zone system
Figure 2 Honeywell S plan
Sample evo systems
42 Appendix