27
9 - NOMINAL WATER FLOW CONTROL WITH VARIABLE-
SPEED PUMP
9.1 - Pump flow/pressure curve
BW10 units with variable-speed hydronic module include a
water pump that automatically adjusts the flow to maintain a
constant pressure or constant temperature difference.
No control is required at start-up, but the control mode must be
selected at the unit interface (refer to the BW10 Control
manual).
50
60
70
80
90
100
110
120
130
140
150
160
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
50
70
90
110
130
150
170
190
210
0
1
2
3
4
5
6
7
8
9
50
60
70
80
90
100
110
120
130
140
150
160
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
50
70
90
110
130
150
170
190
210
0
1
2
3
4
5
6
7
8
Condenser
9.2 - Available static system pressure (fixed or variable-speed high-pressure pumps, units with hydronic module)
Evaporator
1
BW10 020
2
BW10 025 to BW10 030
3
BW10 035
4
BW10 040
5
BW10 045
6
BW10 050
7
BW10 060
8
BW10 070
9
BW10 080
10 BW10 090
1
BW10 020
2
BW10 025 to BW10 030
3
BW10 035
4
BW10 040
5
BW10 045
6
BW10 050
7
BW10 060
8
BW10 070
9
BW10 080
10 BW10 090
BW10 020-045
BW10 050-090
BW10 020-045
BW10 050-090
Pr
essur
e head
, kP
a
Water flow rate, l/s
Pr
essur
e head
, kP
a
Water flow rate, l/s
Pr
essur
e head
, kP
a
Water flow rate, l/s
Pr
essur
e head
, kP
a
Water flow rate, l/s
Содержание BW10 020-090
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