TDMA CONTROL 602-702 Eng Nov.doc
70
Frost Protection Sensor
Solar pump = Normal operation and when collector
temperature <20°C, then solarpump = On. When collector
temperature > 22°C, then solar pump = off
Cooling = Normal operation
DHW Heating = Off
Frost protection sensor and collector
sensor (short circuit)
Or
Frost protection sensor, collector sensor
(short circuit) and store bottom sensor
Solar pump = On but when store top temperature is >90°C,
then solar pump = Off
Cooling = Normal operation
DHW Heating = Off
Frost protection sensor and collector
sensor (interruption)
Or
Frost protection sensor, collector sensor
(interruption) and store bottom sensor
Solar pump = Off
Cooling = Normal operation
DHW Heating = Off
Frost protection sensor and store top
sensor
Or
Frost protection sensor and cylinder
sensor below
Solar pump = Off, but when collector temperature is r <
20°C, then solar pump = On, when collector temperature is >
22°C, then solar pump = Off
Cooling = Off
DHW heating = Off
Frost protection sensor, collector sensor
and store top sensor
Solar pump = Off
Cooling = Off
DHW heating =Off
9.3
Solar Control with Two Store Control
Sensor Failure
Action
Collector Sensor
Solar pump = Off
Cooling= Normal operation
DHW Heating = Normal operation
Store Top Sensor
Solar pump = Off
Cooling = Off
DHW Heating = Off
Store Bottom Sensor
Solar pump = Off
Cooling = Normal operation
DHW Heating = Normal operation
Store Bottom Sensor 2
Solar pump = Normal operation
Cooling = Off, Uswitching to store bottom sensor
DHW Heating = Normal operation
Store bottom sensor2 and Collector
Sensor
Solar pump = Off
Cooling = Off
DHW heating = Normal operation
Store Bottom Sensor 2 and Store
Sensor Top
Solar pump = Off
Cooling = Off
DHW Heating = Off
Store Bottom Sensor 2 and Store
Bottom Sensor
Solar pump = Off
Cooling = Off
DHW heating = Normal operation