Installation
6 720 805 339 (2014/09)
12
3.6
Installing the temperature sensors
The temperature sensors and safety equipment are fitted in different
locations on the cylinder, subject to system.
Fig. 9
Overview of connections
[1]
Lower sensor pocket
[2]
Centre sensor pocket
[3]
Upper sensor pocket
The temperature in the top of the cylinder may be greater than the set
point of the thermostat/sensor due to stratification of the stored hot
water. Positioning the cylinder thermostat or cylinder sensor (with
optional diverter valve kit) in the lower sensor pocket, will only detect
the water temperature in the lower section of the cylinder.
6 720 645 525-05.1O
2
1
3
Solar thermal
system?
yes
yes
no
no
System type
S-plan or Y-plan
with internal three-way valve
S-plan or Y-plan
with internal three-way valve
Upper sensor pocket 1 Solar high limit thermostat
Solar high limit thermostat and
2nd solar sensor
1)
1) 2nd solar sensor is required for some solar installations
–
–
Upper sensor pocket 2
2nd solar sensor
1)
Dual cylinder thermostat
2)
2) Only the temperature limiter will be connected
–
Dual cylinder thermostat
2)
Centre sensor pocket
Dual cylinder thermostat
Cylinder temperature sensor
3)
3) Part of the standard delivery of the internal three-way valve (heating appliance accessory)
Dual cylinder thermostat
Cylinder temperature sensor
3)
Lower sensor pocket
Solar sensor 1
Solar sensor 1
–
–
Table 7
