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FLOW-GPM
02468 10 12 14 16 18 20 22
TOTAL HEAD-FEET
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
FLOW-M3/H
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TOTAL HEAD-METERS
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
1 Speed 1
2 Speed 2
3 Speed 3
4 Speed 4
1
4
A
SHADED AREA IS
VARIABLE SPEED
OPERATING RANGE
Minimum Speed
B
Maximum Speed
A
B
Performance Curves for the Taco 00e™ series— VT2218
M
M
Return
Sensor
M
B
C
A
M M M M
Outdoor
Sensor
Boiler
Sensor
Supply
Sensor
Supply
Sensor
Return
Sensor
Boiler
Return Sensor
Supply
Sensor
Boiler Return
Sensor
Mixing
Duct Supply
Sensor
Delta-T
Across a series loop
system using zone valves
Delta-T
Across multi-zone radiant
manifolds with loop actuators
Radiant Injection with boiler protection
Decreases speed to protect boiler from
low return water temperature and
ue gas condensation
Boiler Protection — by-pass loop
Increases speed to protect boiler from
low return water temperature and
ue gas condensation
Heating or Chilled Water Cooling
Fan coil xed water temperature
Set Point Heat
Decreases speed on
temperature rise
Set Point Cool
Increases speed on
temperature rise
B
C
A
B
C
A
iSeries-R
Typical Variable Speed Applications
FLOW-GPM
02468 10 12 14 16 18 20 22
TOTAL HEAD-FEET
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
FLOW-M3/H
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TOTAL HEAD-METERS
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
1 Speed 1
2 Speed 2
3 Speed 3
4 Speed 4
1
2
3
4
1 Speed 1
2 Speed 2
3 Speed 3
4 Speed 4
1
2
3
4
Applications & Performance