Honeywell evohome Installation Manual page 2

Overview
Honeywell is providing two pre-configured
packs: Sundial pack and evotouch
Thermostat.
evohome Sundial pack
This pack is suitable for S plan and Y plan
systems with domestic hot water control.
It comprises the following devices that are
necessary to control heating and domestic
hot water:
• Heating relay BDR91
• Domestic hot water relay BDR91
• Domestic hot water sensor CS92A
All devices are pre-configured with the
evotouch to control heating and domestic
hot water:
evotouch Thermostat
This pack is specific for a Combi boiler
system without domestic hot water control.
It is already pre-configured with the BDR91
boiler relay without domestic hot water
control, see "Application 3: Combi boiler" on
page 5.
However, it can be upgraded later on in the
field to control domestic hot water as S plan
or Y plan system as well.
To change system configuration:
See "Upgrade application 3: Combi boiler
with domestic hot water" on page 6.
2
Non pre-configured devices
With non pre-configured devices such as
HR80UK you can configure the system by
following the instructions of the GUIDED
CONFIGURATION for all mentioned
applications.
Note: The configuration is dependent on the
application you are selecting.
Components
The CS92A hot water sensor is wireless,
comprising of a transceiver unit and a
strap-on sensor with 1.5 m of cable. It
operates on 2 x AA alkaline batteries, giving
a battery life of at least 2 years under typical
operating conditions.
The BDR91 relay module is a wireless relay
module with change over contact 5 A and
transceiver 868 MHz.