92
1) P-Q graph for different pump HEX duty
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.
* 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.
* When Pool Function select as Zone 2 circuit, [P2] use to circulate water to heat exchanger which use to transfer
heat to pool water.
* Pool pump [P3] circulates the pool water through the heat exchanger to get warm water.
0
10
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30
40
50
60
70
80
90
0
10
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Water Flow Rate, Q (L/min)
12kw rated duty 81
16kw rated duty 97
Max duty C5
Min duty 50
40
50
100
110
120
130
140
150
160
P
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ss
u
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(k
p
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P-Q
