Maintenance Of The On-Demand Dhw Block - IBC CX Series Installation And Operating Manual

7.4 Maintenance of the On-Demand DHW block

The On-Demand DHW block is an assembly including the DHW flat-plate heat exchanger, the
bypass valve with actuator, the primary pump, the four water external connection ports, two
temperature sensors, the flow sensor, a boiler circuit drain port (not visible below--located behind
boiler inlet connector), and the strainer / flow restrictor.
Boiler circuit water pressure sensor
Bypass check valve
DHW outlet temperature sensor
DHW flat-plate heat exchanger
Bypass valve actuator (partially obscured)
DCW inlet temperature sensor
Flow Sensor
Flow restrictor / water strainer
Auto air vent (keep cap open)
Boiler pump air purge valve (normally closed)
Figure 46 Combi block service points
Section: Service and maintenance
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