IDEAL imax plus F80 Installation And Servicing page 21

24 EXAMPLES OF HEATING SYSTEMS CONT'D
Installation of Two Boilers in Cascade, with Mixing Header and One or more Radiator Groups
5 7 6
1 2 3 4
5 7 6
1 2 3 4
DHW Storage Tank with DHW Pump Installed on the Secondary Circuit, in Parallel with the Heating Circuit.
5 76
1 2 3 4
Note.
The primary system pump would be off while the DHW pump is running with PARA A second digit set to 'x1'. This would
only give adequate circulation if the DHW pump was connected into the primary circuit, shown to the left of the mixing
header above. However, in the case shown it will be necessary to run the primary system pump with the DHW pump
for correct circulation. To achieve this set PARA A second digit to 'x0'.
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Installation & Servicing
INSTALLATION
non return
Flow
valve
11 12 13
Return
Boiler pump or
storage tank
non return
valve
Flow
11 12 13
Return
Boiler pump
or storage
tank pump
Flow
11 12 13
Return
Filter
Primary
System
Pump
Heating system
pump
Filter
Mixing
Header
16 17 18
DHW
pump
DHW
tank
Mixing header
Heating circuit
ima 5782
Heating
system pump
Heating circuit
ima 5783
non return
valve
21