Wolf COB-2 Operation Instructions Manual page 84

Appendix
Low loss header / plate heat exchanger for hydraulic separation without cylinder or cylinder
behind low loss header
Fig. 12.6 System configuration 11 - Low loss header / plate heat exchanger for hydraulic separation
Input E2
q
Feed/heating circuit pump
w
– Burner starts subject to demand from the header temperature control
– Feed/heating circuit pump enabled as a feed pump
– Header temperature control
– Input E2: Header sensor
– Heating circuit and cylinder heating with MM-2
Cylinder before the low loss header / plate heat exchanger for hydraulic separation
Fig. 12.7 System configuration 11 - Cylinder for hydraulic separation
Input: Cylinder temperature sensor
q
Input E2: Header temperature sensor
w
Cylinder primary pump
e
Feed/heating circuit pump
r
– Burner starts subject to demand from the header temperature control (heating mode) or in case of
cylinder demand.
– Feed/heating circuit pump enabled as a feed pump (heating mode only). Not activated during cylinder
heating.
– Header temperature control (heating mode only)
– Input E2: Header sensor (heating mode only)
– In case of cylinder heating, the reference temperature is provided by the boiler sensor.
– Heating circuits with MM-2
84 | WOLF GmbH
q
w e
Header sensor
e
t
e
q
w
r
Cylinder temperature sensor
t
Cylinder
y
Header temperature sensor
u
y
u
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