WITA Delta Plus UE 35A / UE 55A
Compared to a conventional pump, using this
energy-saving electronic electronic circulation pump
helps to reduce energy consumption up to 80%.
The "One touch" option allows you to choose from six
different performance curves:
three proportional
pressure curves and three constant speed control
characteristics.
The LED display shows the selected characteristic.
WITA Delta energy-saving electronic pumps are recommended for systems with thermostatic valves, which
open and close automatically due to room temperature changes. When valves close, installation conditions
change, and consequently pumps using a fixed characteristic can be more noisy. Electronic rotation speed
control solutions allow to adjust automatically pump operation parameters to the changing conditions.
Consequently, less energy is used, the pump is more durable and less noisy. You can control pump
performance with a special system, which registers even the slightest temperature changes and enables the
pump to operate in energy efficiency mode at any time. Specially-constructed engine and rotor with
permanent magnet are the core of each high-efficient pump.
Technical data
WITA Delta Plus
max. lifting height:
max. flow:
power consumption P1 (W):
EEI:
operating voltage:
max. operating pressure:
motor protection:
protection type:
ambient temperature:
media temperature:
temperature class:
connections:
installation length:
weight:
control function:
permissible media:
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UE 35A
UE 55A
4.0 m
6.0 m
2.600 l/h
3.200 l/h
3-23
3-38
< 0.20
< 0.20
1 x 230 V 50Hz
10 bar
external protection is not required
IP 42
0°C–40°C
5°C–110°C
TF110 according to CEN 335-2-51
DN 15, DN 20, DN 25, DN 32
110 mm, 130 mm, 180 mm
about 2.4 kg
3 constant speed control characteristics
3 proportional pressure curves
heating water (according to the VDI 2035 requirements)
water/glycol max. 1:1
cataphoretic coated cast iron body
chromium-nickel steel stator and ring
rotor with permanent magnet in stainless steel casing
wear ring manufactured out of engineering polymer
ceramic shaft and bearings
aluminium head casing
selected curve indication
Characteristics
Dimensions
Pump settings
The "One touch" option allows you to choose from six different performance curves. Aside from three
proportional pressure curves there are three constant speed control characteristics. The LED color indicates
the selected characteristic. Green color indicates the lowest characteristic, whereas red color the highest
one. If you press and hold the button during more than two seconds, the device will switch the characteristic.
Proportional pressure curves
When operating the pump adjusts to the settings of proportional pressure. Whereas the differential pressure
is controlled by the pump and it depends on the current of the flow.
Proportional pressure curves are indicated by the blinking LED placed on the pump (the LED's color varies
depending on the selected curve).
Constant rotation speed control characteristics
Speed control characteristics are indicated with a steady LED light (its color varies depending on the
selected characteristic). This type of control allows the pump to maintain constant rotation speed.
Sample curves
Press and hold for 2 s
Proportional pressure curves
Constant speed curves
Available models
WITA Delta Plus UE 35 A
Item
WITA Delta Plus UE 35A-25 180
WITA Delta Plus UE 35A-32 180
WITA Delta Plus UE 35A-20 180
WITA Delta Plus UE 35A-15 130
WITA Delta Plus UE 35A-20 130
WITA Delta Plus UE 35A-25 130
WITA Delta Plus UE 35A-20 SB
WITA Delta Plus UE 35A-25 SB
Pump body
Cast iron
Cast iron
Cast iron
Cast iron
Cast iron
Cast iron
Brass
Brass
Length
180
(mm)
180
180
130
130
130
110
110
DN
25
32
20
15
20
25
20
25
External
1 ½”
thread
2”
1 ¼”
1”
1 ¼”
1 ½”
1 ¼”
1 ½”
H(m)
4
4
4
4
4
4
4
4
Item No.
015550
015551
015552
015553
015554
015555
015556
015557
Pump body
Cast iron
Cast iron
Cast iron
Cast iron
Cast iron
Cast iron
Brass
Brass
Length
180
(mm)
180
180
130
130
130
110
110
DN
25
32
20
15
20
25
20
25
External
1 ½”
thread
2”
1 ¼”
1”
1 ¼”
1 ½”
1 ¼”
1 ½”
H(m)
6
6
6
6
6
6
6
6
Item No.
015560
015561
015562
015563
015564
015565
015566
015567
WITA Delta Plus UE 55 A
Item
WITA Delta Plus UE 55A-25 180
WITA Delta Plus UE 55A-32 180
WITA Delta Plus UE 55A-20 180
WITA Delta Plus UE 55A-15 130
WITA Delta Plus UE 55A-20 130
WITA Delta Plus UE 55A-25 130
WITA Delta Plus UE 55A-20 SB
WITA Delta Plus UE 55A-25 SB