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1) P-Q graph for different pump HEX duty
Water FlowRate. Q (L/min)
P
res
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P
(k
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P - Q
12.2.2 Zone Water Pump Control
Purpose:
Water pump install at each zone to circulate the water inside each zone during buffer tank connection selected
“YES” or 2 zone systems.
Content:
AC type water pump install for this zone water pump control. When optional PCB connected, 230V output will
drive this zone pump.
There are three pump can be connected through Optional PCB. (Zone 1 Pump, Zone 2 Pump, & Pool Pump)
* Zone 1 pump [P1] use to circulate zone 1 water circuit & Zone 1 mixing valve [M1] adjust to control the Zone 1
target water temperature.
target water temperature.
* Zone 2 pump [P2] use to circulate zone 2 water circuit & Zone 2 mixing valve [M2] adjust to control the Zone 2
target water temperature.
target water temperature.
* When Pool Function select as Zone 2 circuit, [P2] use to circulate water to heat exchanger which use to transfer
heat to pool water.
heat to pool water.
* Pool pump [P3] circulates the pool water through the heat exchanger to get warm water.
Zone 1 and Zone 2 water pump start condition:
o Zone room request ON
(eg. Zone 1 thermo ON, only zone 1 pump will turn ON)
Zone 1 and Zone 2 water pump stop condition:
o Zone room request OFF
Pool water pump start condition:
o Pool Zone request ON AND
o Pool function is selected
o Pool function is selected
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