Water
Heater
Check blend circuit ow rate.
Flow rate is less than 19 l/m. Reset circuit
ow rate and check for the following:
• Air locks
• Blocked strainers
• Closed valves
• Pump failure
Checkvalves
Check circuit to make sure checkvalves are
correct positioned and operating normally.
(See Recirculation Circuit - Plumbing
Schematic)
Check mixed return temperature.
Minimum recirculation loop temperature
loss = 1°C
Water pressure
Make sure supply pressures are balanced.
Make sure mixed return is owing correctly
to hot water supply inlet. Check for the
following:
• Air locks
• Blocked strainers
• Closed valves
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