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3. Description
3.8 Hydraulic specifications
Depending on the flow, the following diagrams represent:
- the manometric heights of the heating circulator pumps (delivered
from the factory for DTGE130-35 or, optionally, for DTG130-45,
DTG130-65,DTG130-90 and DTG130-115)
- loss of load in the boiler.
ALPHA 2 L 25-60 electronic heating pump (Pump class A):
- Delivered as standard for DTGE130-35
A
7
6
5
E
4
3
C
2
D
1
0
0,0
0,5
1,0
A
Rated net head (mWG)
B
3
Flow rate (m
/h)
C
Maximum proportional pressure
D
Minimum proportional pressure
E
Maximum constant pressure
F
Minimum constant pressure
G
Boiler pressure drop
III
Speed III
II
Speed II
I
Speed I
20
F
G
1,5
2,0
2,5
The pump's operating point can be moved on the maximum proportional pressure curve according to the
heating requirement.
If the heating requirement increases, the pressure increases.
The pump's operating point can be moved on the minimum proportional pressure curve according to the
heating requirement.
If the heating requirement increases, the pressure increases.
The pump's operating point can be moved on the maximum constant pressure curve according to the heating
requirement.
The pressure remains constant, regardless of the heating requirement.
The pump's operating point can be moved on the minimum constant pressure curve according to the heating
requirement.
The pressure remains constant, regardless of the heating requirement.
The pump runs at a constant speed and therefore according to a constant curve.
The pump is set to run according to the maximum curve.
The pump can be quickly vented by selecting speed III for a short period.
The pump runs at a constant speed and therefore according to a constant curve.
The pump is set to run according to the average curve.
The pump runs at a constant speed and therefore according to a constant curve.
The pump is set to run according to the minimum curve.
D
C
F
E
POWER
AUTO
ON
1
C003399-B
DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus
For a fixed flow, the manometric height available at the boiler outlet
is obtained by taking the difference between the manometric height
of the circulator pump and the loss of load in the boiler.
- Optional for DTG130-45 (Package HC142).
A
7
6
5
4
3
C
2
1
0
0,0
0,5
3,0
B
Press the 1 button on the pump to modify its performance
E
F
D
G
1,0
1,5
2,0
15/02/2011 - 300014279-001-J
2,5
3,0
B
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